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1 | 05330448 | aliguori | /*
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2 | 05330448 | aliguori | * QEMU KVM support
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3 | 05330448 | aliguori | *
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4 | 05330448 | aliguori | * Copyright IBM, Corp. 2008
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5 | 5832d1f2 | aliguori | * Red Hat, Inc. 2008
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6 | 05330448 | aliguori | *
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7 | 05330448 | aliguori | * Authors:
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8 | 05330448 | aliguori | * Anthony Liguori <aliguori@us.ibm.com>
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9 | 5832d1f2 | aliguori | * Glauber Costa <gcosta@redhat.com>
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10 | 05330448 | aliguori | *
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11 | 05330448 | aliguori | * This work is licensed under the terms of the GNU GPL, version 2 or later.
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12 | 05330448 | aliguori | * See the COPYING file in the top-level directory.
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13 | 05330448 | aliguori | *
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14 | 05330448 | aliguori | */
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15 | 05330448 | aliguori | |
16 | 05330448 | aliguori | #include <sys/types.h> |
17 | 05330448 | aliguori | #include <sys/ioctl.h> |
18 | 05330448 | aliguori | #include <sys/mman.h> |
19 | 984b5181 | aliguori | #include <stdarg.h> |
20 | 05330448 | aliguori | |
21 | 05330448 | aliguori | #include <linux/kvm.h> |
22 | 05330448 | aliguori | |
23 | 05330448 | aliguori | #include "qemu-common.h" |
24 | 1de7afc9 | Paolo Bonzini | #include "qemu/atomic.h" |
25 | 1de7afc9 | Paolo Bonzini | #include "qemu/option.h" |
26 | 1de7afc9 | Paolo Bonzini | #include "qemu/config-file.h" |
27 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
28 | d33a1810 | Jan Kiszka | #include "hw/hw.h" |
29 | a2cb15b0 | Michael S. Tsirkin | #include "hw/pci/msi.h" |
30 | 022c62cb | Paolo Bonzini | #include "exec/gdbstub.h" |
31 | 9c17d615 | Paolo Bonzini | #include "sysemu/kvm.h" |
32 | 1de7afc9 | Paolo Bonzini | #include "qemu/bswap.h" |
33 | 022c62cb | Paolo Bonzini | #include "exec/memory.h" |
34 | 747afd5b | Juan Quintela | #include "exec/ram_addr.h" |
35 | 022c62cb | Paolo Bonzini | #include "exec/address-spaces.h" |
36 | 1de7afc9 | Paolo Bonzini | #include "qemu/event_notifier.h" |
37 | 9c775729 | Kazuya Saito | #include "trace.h" |
38 | 05330448 | aliguori | |
39 | 135a129a | Aneesh Kumar K.V | #include "hw/boards.h" |
40 | 135a129a | Aneesh Kumar K.V | |
41 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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42 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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43 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
44 | d2f2b8a7 | Stefan Hajnoczi | #endif
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45 | d2f2b8a7 | Stefan Hajnoczi | |
46 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
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47 | 62fe8331 | Christian Borntraeger | #include <valgrind/memcheck.h> |
48 | 62fe8331 | Christian Borntraeger | #endif
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49 | 62fe8331 | Christian Borntraeger | |
50 | 93148aa5 | Stefan Weil | /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */
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51 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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52 | f65ed4c1 | aliguori | |
53 | 05330448 | aliguori | //#define DEBUG_KVM
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54 | 05330448 | aliguori | |
55 | 05330448 | aliguori | #ifdef DEBUG_KVM
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56 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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57 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
58 | 05330448 | aliguori | #else
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59 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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60 | 05330448 | aliguori | do { } while (0) |
61 | 05330448 | aliguori | #endif
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62 | 05330448 | aliguori | |
63 | 04fa27f5 | Jan Kiszka | #define KVM_MSI_HASHTAB_SIZE 256 |
64 | 04fa27f5 | Jan Kiszka | |
65 | 34fc643f | aliguori | typedef struct KVMSlot |
66 | 34fc643f | aliguori | { |
67 | a8170e5e | Avi Kivity | hwaddr start_addr; |
68 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
69 | 9f213ed9 | Avi Kivity | void *ram;
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70 | 34fc643f | aliguori | int slot;
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71 | 34fc643f | aliguori | int flags;
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72 | 34fc643f | aliguori | } KVMSlot; |
73 | 05330448 | aliguori | |
74 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
75 | 5832d1f2 | aliguori | |
76 | 05330448 | aliguori | struct KVMState
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77 | 05330448 | aliguori | { |
78 | fb541ca5 | Alex Williamson | KVMSlot *slots; |
79 | fb541ca5 | Alex Williamson | int nr_slots;
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80 | 05330448 | aliguori | int fd;
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81 | 05330448 | aliguori | int vmfd;
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82 | f65ed4c1 | aliguori | int coalesced_mmio;
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83 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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84 | 1cae88b9 | Avi Kivity | bool coalesced_flush_in_progress;
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85 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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86 | 4495d6a7 | Jan Kiszka | int migration_log;
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87 | a0fb002c | Jan Kiszka | int vcpu_events;
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88 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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89 | ff44f1a3 | Jan Kiszka | int debugregs;
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90 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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91 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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92 | e22a25c9 | aliguori | #endif
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93 | 8a7c7393 | Jan Kiszka | int pit_state2;
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94 | f1665b21 | Sheng Yang | int xsave, xcrs;
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95 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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96 | 3ab73842 | Jan Kiszka | int intx_set_mask;
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97 | 92e4b519 | David Gibson | /* The man page (and posix) say ioctl numbers are signed int, but
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98 | 92e4b519 | David Gibson | * they're not. Linux, glibc and *BSD all treat ioctl numbers as
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99 | 92e4b519 | David Gibson | * unsigned, and treating them as signed here can break things */
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100 | e333cd69 | Jan Kiszka | unsigned irq_set_ioctl;
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101 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
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102 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing *irq_routes;
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103 | 84b058d7 | Jan Kiszka | int nr_allocated_irq_routes;
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104 | 84b058d7 | Jan Kiszka | uint32_t *used_gsi_bitmap; |
105 | 4e2e4e63 | Jan Kiszka | unsigned int gsi_count; |
106 | 04fa27f5 | Jan Kiszka | QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE]; |
107 | 4a3adebb | Jan Kiszka | bool direct_msi;
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108 | 84b058d7 | Jan Kiszka | #endif
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109 | 05330448 | aliguori | }; |
110 | 05330448 | aliguori | |
111 | 6a7af8cb | Jan Kiszka | KVMState *kvm_state; |
112 | 3d4b2649 | Jan Kiszka | bool kvm_kernel_irqchip;
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113 | 7ae26bd4 | Peter Maydell | bool kvm_async_interrupts_allowed;
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114 | 215e79c0 | Alexander Graf | bool kvm_halt_in_kernel_allowed;
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115 | cc7e0ddf | Peter Maydell | bool kvm_irqfds_allowed;
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116 | 614e41bc | Peter Maydell | bool kvm_msi_via_irqfd_allowed;
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117 | f3e1bed8 | Peter Maydell | bool kvm_gsi_routing_allowed;
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118 | 76fe21de | Alexey Kardashevskiy | bool kvm_gsi_direct_mapping;
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119 | 13eed94e | Igor Mammedov | bool kvm_allowed;
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120 | df9c8b75 | Jordan Justen | bool kvm_readonly_mem_allowed;
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121 | 05330448 | aliguori | |
122 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
123 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
124 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
125 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
126 | 94a8d39a | Jan Kiszka | }; |
127 | 94a8d39a | Jan Kiszka | |
128 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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129 | 05330448 | aliguori | { |
130 | 05330448 | aliguori | int i;
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131 | 05330448 | aliguori | |
132 | fb541ca5 | Alex Williamson | for (i = 0; i < s->nr_slots; i++) { |
133 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
134 | 05330448 | aliguori | return &s->slots[i];
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135 | a426e122 | Jan Kiszka | } |
136 | 05330448 | aliguori | } |
137 | 05330448 | aliguori | |
138 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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139 | d3f8d37f | aliguori | abort(); |
140 | d3f8d37f | aliguori | } |
141 | d3f8d37f | aliguori | |
142 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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143 | a8170e5e | Avi Kivity | hwaddr start_addr, |
144 | a8170e5e | Avi Kivity | hwaddr end_addr) |
145 | d3f8d37f | aliguori | { |
146 | d3f8d37f | aliguori | int i;
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147 | d3f8d37f | aliguori | |
148 | fb541ca5 | Alex Williamson | for (i = 0; i < s->nr_slots; i++) { |
149 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
150 | d3f8d37f | aliguori | |
151 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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152 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
153 | d3f8d37f | aliguori | return mem;
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154 | d3f8d37f | aliguori | } |
155 | d3f8d37f | aliguori | } |
156 | d3f8d37f | aliguori | |
157 | 05330448 | aliguori | return NULL; |
158 | 05330448 | aliguori | } |
159 | 05330448 | aliguori | |
160 | 6152e2ae | aliguori | /*
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161 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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162 | 6152e2ae | aliguori | */
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163 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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164 | a8170e5e | Avi Kivity | hwaddr start_addr, |
165 | a8170e5e | Avi Kivity | hwaddr end_addr) |
166 | 05330448 | aliguori | { |
167 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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168 | 05330448 | aliguori | int i;
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169 | 05330448 | aliguori | |
170 | fb541ca5 | Alex Williamson | for (i = 0; i < s->nr_slots; i++) { |
171 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
172 | 05330448 | aliguori | |
173 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
174 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
175 | 6152e2ae | aliguori | continue;
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176 | 6152e2ae | aliguori | } |
177 | 6152e2ae | aliguori | |
178 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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179 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
180 | 6152e2ae | aliguori | found = mem; |
181 | 6152e2ae | aliguori | } |
182 | 05330448 | aliguori | } |
183 | 05330448 | aliguori | |
184 | 6152e2ae | aliguori | return found;
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185 | 05330448 | aliguori | } |
186 | 05330448 | aliguori | |
187 | 9f213ed9 | Avi Kivity | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
188 | a8170e5e | Avi Kivity | hwaddr *phys_addr) |
189 | 983dfc3b | Huang Ying | { |
190 | 983dfc3b | Huang Ying | int i;
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191 | 983dfc3b | Huang Ying | |
192 | fb541ca5 | Alex Williamson | for (i = 0; i < s->nr_slots; i++) { |
193 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
194 | 983dfc3b | Huang Ying | |
195 | 9f213ed9 | Avi Kivity | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
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196 | 9f213ed9 | Avi Kivity | *phys_addr = mem->start_addr + (ram - mem->ram); |
197 | 983dfc3b | Huang Ying | return 1; |
198 | 983dfc3b | Huang Ying | } |
199 | 983dfc3b | Huang Ying | } |
200 | 983dfc3b | Huang Ying | |
201 | 983dfc3b | Huang Ying | return 0; |
202 | 983dfc3b | Huang Ying | } |
203 | 983dfc3b | Huang Ying | |
204 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
205 | 5832d1f2 | aliguori | { |
206 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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207 | 5832d1f2 | aliguori | |
208 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
209 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
210 | 9f213ed9 | Avi Kivity | mem.userspace_addr = (unsigned long)slot->ram; |
211 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
212 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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213 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
214 | 4495d6a7 | Jan Kiszka | } |
215 | 651eb0f4 | Xiao Guangrong | |
216 | 651eb0f4 | Xiao Guangrong | if (slot->memory_size && mem.flags & KVM_MEM_READONLY) {
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217 | 235e8982 | Jordan Justen | /* Set the slot size to 0 before setting the slot to the desired
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218 | 235e8982 | Jordan Justen | * value. This is needed based on KVM commit 75d61fbc. */
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219 | 235e8982 | Jordan Justen | mem.memory_size = 0;
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220 | 235e8982 | Jordan Justen | kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
221 | 235e8982 | Jordan Justen | } |
222 | 235e8982 | Jordan Justen | mem.memory_size = slot->memory_size; |
223 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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224 | 5832d1f2 | aliguori | } |
225 | 5832d1f2 | aliguori | |
226 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
227 | 8d2ba1fb | Jan Kiszka | { |
228 | 20d695a9 | Andreas Färber | CPUState *cpu = opaque; |
229 | 8d2ba1fb | Jan Kiszka | |
230 | 20d695a9 | Andreas Färber | kvm_arch_reset_vcpu(cpu); |
231 | 8d2ba1fb | Jan Kiszka | } |
232 | 5832d1f2 | aliguori | |
233 | 504134d2 | Andreas Färber | int kvm_init_vcpu(CPUState *cpu)
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234 | 05330448 | aliguori | { |
235 | 05330448 | aliguori | KVMState *s = kvm_state; |
236 | 05330448 | aliguori | long mmap_size;
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237 | 05330448 | aliguori | int ret;
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238 | 05330448 | aliguori | |
239 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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240 | 05330448 | aliguori | |
241 | b164e48e | Eduardo Habkost | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)kvm_arch_vcpu_id(cpu));
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242 | 05330448 | aliguori | if (ret < 0) { |
243 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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244 | 05330448 | aliguori | goto err;
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245 | 05330448 | aliguori | } |
246 | 05330448 | aliguori | |
247 | 8737c51c | Andreas Färber | cpu->kvm_fd = ret; |
248 | a60f24b5 | Andreas Färber | cpu->kvm_state = s; |
249 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = true;
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250 | 05330448 | aliguori | |
251 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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252 | 05330448 | aliguori | if (mmap_size < 0) { |
253 | 748a680b | Jan Kiszka | ret = mmap_size; |
254 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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255 | 05330448 | aliguori | goto err;
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256 | 05330448 | aliguori | } |
257 | 05330448 | aliguori | |
258 | f7575c96 | Andreas Färber | cpu->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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259 | 8737c51c | Andreas Färber | cpu->kvm_fd, 0);
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260 | f7575c96 | Andreas Färber | if (cpu->kvm_run == MAP_FAILED) {
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261 | 05330448 | aliguori | ret = -errno; |
262 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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263 | 05330448 | aliguori | goto err;
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264 | 05330448 | aliguori | } |
265 | 05330448 | aliguori | |
266 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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267 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
268 | f7575c96 | Andreas Färber | (void *)cpu->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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269 | a426e122 | Jan Kiszka | } |
270 | 62a2744c | Sheng Yang | |
271 | 20d695a9 | Andreas Färber | ret = kvm_arch_init_vcpu(cpu); |
272 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
273 | 20d695a9 | Andreas Färber | qemu_register_reset(kvm_reset_vcpu, cpu); |
274 | 20d695a9 | Andreas Färber | kvm_arch_reset_vcpu(cpu); |
275 | 8d2ba1fb | Jan Kiszka | } |
276 | 05330448 | aliguori | err:
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277 | 05330448 | aliguori | return ret;
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278 | 05330448 | aliguori | } |
279 | 05330448 | aliguori | |
280 | 5832d1f2 | aliguori | /*
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281 | 5832d1f2 | aliguori | * dirty pages logging control
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282 | 5832d1f2 | aliguori | */
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283 | 25254bbc | Michael S. Tsirkin | |
284 | 235e8982 | Jordan Justen | static int kvm_mem_flags(KVMState *s, bool log_dirty, bool readonly) |
285 | 25254bbc | Michael S. Tsirkin | { |
286 | 235e8982 | Jordan Justen | int flags = 0; |
287 | 235e8982 | Jordan Justen | flags = log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0;
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288 | 235e8982 | Jordan Justen | if (readonly && kvm_readonly_mem_allowed) {
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289 | 235e8982 | Jordan Justen | flags |= KVM_MEM_READONLY; |
290 | 235e8982 | Jordan Justen | } |
291 | 235e8982 | Jordan Justen | return flags;
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292 | 25254bbc | Michael S. Tsirkin | } |
293 | 25254bbc | Michael S. Tsirkin | |
294 | 25254bbc | Michael S. Tsirkin | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
295 | 5832d1f2 | aliguori | { |
296 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
297 | 25254bbc | Michael S. Tsirkin | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
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298 | 4495d6a7 | Jan Kiszka | int old_flags;
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299 | 4495d6a7 | Jan Kiszka | |
300 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
301 | 5832d1f2 | aliguori | |
302 | 235e8982 | Jordan Justen | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty, false);
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303 | 5832d1f2 | aliguori | mem->flags = flags; |
304 | 5832d1f2 | aliguori | |
305 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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306 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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307 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
308 | 4495d6a7 | Jan Kiszka | } |
309 | 25254bbc | Michael S. Tsirkin | |
310 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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311 | 25254bbc | Michael S. Tsirkin | return 0; |
312 | 4495d6a7 | Jan Kiszka | } |
313 | 4495d6a7 | Jan Kiszka | |
314 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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315 | 5832d1f2 | aliguori | } |
316 | 5832d1f2 | aliguori | |
317 | a8170e5e | Avi Kivity | static int kvm_dirty_pages_log_change(hwaddr phys_addr, |
318 | 25254bbc | Michael S. Tsirkin | ram_addr_t size, bool log_dirty)
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319 | 25254bbc | Michael S. Tsirkin | { |
320 | 25254bbc | Michael S. Tsirkin | KVMState *s = kvm_state; |
321 | 25254bbc | Michael S. Tsirkin | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
322 | 25254bbc | Michael S. Tsirkin | |
323 | 25254bbc | Michael S. Tsirkin | if (mem == NULL) { |
324 | 25254bbc | Michael S. Tsirkin | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
325 | 25254bbc | Michael S. Tsirkin | TARGET_FMT_plx "\n", __func__, phys_addr,
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326 | a8170e5e | Avi Kivity | (hwaddr)(phys_addr + size - 1));
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327 | 25254bbc | Michael S. Tsirkin | return -EINVAL;
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328 | 25254bbc | Michael S. Tsirkin | } |
329 | 25254bbc | Michael S. Tsirkin | return kvm_slot_dirty_pages_log_change(mem, log_dirty);
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330 | 25254bbc | Michael S. Tsirkin | } |
331 | 25254bbc | Michael S. Tsirkin | |
332 | a01672d3 | Avi Kivity | static void kvm_log_start(MemoryListener *listener, |
333 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
334 | 5832d1f2 | aliguori | { |
335 | a01672d3 | Avi Kivity | int r;
|
336 | a01672d3 | Avi Kivity | |
337 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
338 | 052e87b0 | Paolo Bonzini | int128_get64(section->size), true);
|
339 | a01672d3 | Avi Kivity | if (r < 0) { |
340 | a01672d3 | Avi Kivity | abort(); |
341 | a01672d3 | Avi Kivity | } |
342 | 5832d1f2 | aliguori | } |
343 | 5832d1f2 | aliguori | |
344 | a01672d3 | Avi Kivity | static void kvm_log_stop(MemoryListener *listener, |
345 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
346 | 5832d1f2 | aliguori | { |
347 | a01672d3 | Avi Kivity | int r;
|
348 | a01672d3 | Avi Kivity | |
349 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
350 | 052e87b0 | Paolo Bonzini | int128_get64(section->size), false);
|
351 | a01672d3 | Avi Kivity | if (r < 0) { |
352 | a01672d3 | Avi Kivity | abort(); |
353 | a01672d3 | Avi Kivity | } |
354 | 5832d1f2 | aliguori | } |
355 | 5832d1f2 | aliguori | |
356 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
357 | 4495d6a7 | Jan Kiszka | { |
358 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
359 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
360 | 4495d6a7 | Jan Kiszka | int i, err;
|
361 | 4495d6a7 | Jan Kiszka | |
362 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
363 | 4495d6a7 | Jan Kiszka | |
364 | fb541ca5 | Alex Williamson | for (i = 0; i < s->nr_slots; i++) { |
365 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
366 | 4495d6a7 | Jan Kiszka | |
367 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
|
368 | 70fedd76 | Alex Williamson | continue;
|
369 | 70fedd76 | Alex Williamson | } |
370 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
|
371 | 4495d6a7 | Jan Kiszka | continue;
|
372 | 4495d6a7 | Jan Kiszka | } |
373 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
374 | 4495d6a7 | Jan Kiszka | if (err) {
|
375 | 4495d6a7 | Jan Kiszka | return err;
|
376 | 4495d6a7 | Jan Kiszka | } |
377 | 4495d6a7 | Jan Kiszka | } |
378 | 4495d6a7 | Jan Kiszka | return 0; |
379 | 4495d6a7 | Jan Kiszka | } |
380 | 4495d6a7 | Jan Kiszka | |
381 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
|
382 | ffcde12f | Avi Kivity | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
383 | ffcde12f | Avi Kivity | unsigned long *bitmap) |
384 | 96c1606b | Alexander Graf | { |
385 | c9dd46fc | Juan Quintela | ram_addr_t start = section->offset_within_region + section->mr->ram_addr; |
386 | 5ff7fb77 | Juan Quintela | ram_addr_t pages = int128_get64(section->size) / getpagesize(); |
387 | 5ff7fb77 | Juan Quintela | |
388 | 5ff7fb77 | Juan Quintela | cpu_physical_memory_set_dirty_lebitmap(bitmap, start, pages); |
389 | 8369e01c | Marcelo Tosatti | return 0; |
390 | 96c1606b | Alexander Graf | } |
391 | 96c1606b | Alexander Graf | |
392 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
393 | 8369e01c | Marcelo Tosatti | |
394 | 5832d1f2 | aliguori | /**
|
395 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
396 | fd4aa979 | Blue Swirl | * This function updates qemu's dirty bitmap using
|
397 | fd4aa979 | Blue Swirl | * memory_region_set_dirty(). This means all bits are set
|
398 | fd4aa979 | Blue Swirl | * to dirty.
|
399 | 5832d1f2 | aliguori | *
|
400 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
401 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
402 | 5832d1f2 | aliguori | */
|
403 | ffcde12f | Avi Kivity | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
404 | 5832d1f2 | aliguori | { |
405 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
406 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
407 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
408 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
409 | 151f7749 | Jan Kiszka | int ret = 0; |
410 | a8170e5e | Avi Kivity | hwaddr start_addr = section->offset_within_address_space; |
411 | 052e87b0 | Paolo Bonzini | hwaddr end_addr = start_addr + int128_get64(section->size); |
412 | 5832d1f2 | aliguori | |
413 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
414 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
415 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
416 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
417 | 151f7749 | Jan Kiszka | break;
|
418 | 151f7749 | Jan Kiszka | } |
419 | 5832d1f2 | aliguori | |
420 | 51b0c606 | Michael Tokarev | /* XXX bad kernel interface alert
|
421 | 51b0c606 | Michael Tokarev | * For dirty bitmap, kernel allocates array of size aligned to
|
422 | 51b0c606 | Michael Tokarev | * bits-per-long. But for case when the kernel is 64bits and
|
423 | 51b0c606 | Michael Tokarev | * the userspace is 32bits, userspace can't align to the same
|
424 | 51b0c606 | Michael Tokarev | * bits-per-long, since sizeof(long) is different between kernel
|
425 | 51b0c606 | Michael Tokarev | * and user space. This way, userspace will provide buffer which
|
426 | 51b0c606 | Michael Tokarev | * may be 4 bytes less than the kernel will use, resulting in
|
427 | 51b0c606 | Michael Tokarev | * userspace memory corruption (which is not detectable by valgrind
|
428 | 51b0c606 | Michael Tokarev | * too, in most cases).
|
429 | 51b0c606 | Michael Tokarev | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
|
430 | 51b0c606 | Michael Tokarev | * a hope that sizeof(long) wont become >8 any time soon.
|
431 | 51b0c606 | Michael Tokarev | */
|
432 | 51b0c606 | Michael Tokarev | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
433 | 51b0c606 | Michael Tokarev | /*HOST_LONG_BITS*/ 64) / 8; |
434 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
435 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_malloc(size); |
436 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
437 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
438 | 151f7749 | Jan Kiszka | } |
439 | 151f7749 | Jan Kiszka | allocated_size = size; |
440 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
441 | 5832d1f2 | aliguori | |
442 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
443 | 5832d1f2 | aliguori | |
444 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
445 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
446 | 151f7749 | Jan Kiszka | ret = -1;
|
447 | 151f7749 | Jan Kiszka | break;
|
448 | 151f7749 | Jan Kiszka | } |
449 | 5832d1f2 | aliguori | |
450 | ffcde12f | Avi Kivity | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
451 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
452 | 5832d1f2 | aliguori | } |
453 | 7267c094 | Anthony Liguori | g_free(d.dirty_bitmap); |
454 | 151f7749 | Jan Kiszka | |
455 | 151f7749 | Jan Kiszka | return ret;
|
456 | 5832d1f2 | aliguori | } |
457 | 5832d1f2 | aliguori | |
458 | 95d2994a | Avi Kivity | static void kvm_coalesce_mmio_region(MemoryListener *listener, |
459 | 95d2994a | Avi Kivity | MemoryRegionSection *secion, |
460 | a8170e5e | Avi Kivity | hwaddr start, hwaddr size) |
461 | f65ed4c1 | aliguori | { |
462 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
463 | f65ed4c1 | aliguori | |
464 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
465 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
466 | f65ed4c1 | aliguori | |
467 | f65ed4c1 | aliguori | zone.addr = start; |
468 | f65ed4c1 | aliguori | zone.size = size; |
469 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
470 | f65ed4c1 | aliguori | |
471 | 95d2994a | Avi Kivity | (void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
|
472 | f65ed4c1 | aliguori | } |
473 | f65ed4c1 | aliguori | } |
474 | f65ed4c1 | aliguori | |
475 | 95d2994a | Avi Kivity | static void kvm_uncoalesce_mmio_region(MemoryListener *listener, |
476 | 95d2994a | Avi Kivity | MemoryRegionSection *secion, |
477 | a8170e5e | Avi Kivity | hwaddr start, hwaddr size) |
478 | f65ed4c1 | aliguori | { |
479 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
480 | f65ed4c1 | aliguori | |
481 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
482 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
483 | f65ed4c1 | aliguori | |
484 | f65ed4c1 | aliguori | zone.addr = start; |
485 | f65ed4c1 | aliguori | zone.size = size; |
486 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
487 | f65ed4c1 | aliguori | |
488 | 95d2994a | Avi Kivity | (void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
|
489 | f65ed4c1 | aliguori | } |
490 | f65ed4c1 | aliguori | } |
491 | f65ed4c1 | aliguori | |
492 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
493 | ad7b8b33 | Anthony Liguori | { |
494 | ad7b8b33 | Anthony Liguori | int ret;
|
495 | ad7b8b33 | Anthony Liguori | |
496 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
497 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
498 | ad7b8b33 | Anthony Liguori | ret = 0;
|
499 | ad7b8b33 | Anthony Liguori | } |
500 | ad7b8b33 | Anthony Liguori | |
501 | ad7b8b33 | Anthony Liguori | return ret;
|
502 | ad7b8b33 | Anthony Liguori | } |
503 | ad7b8b33 | Anthony Liguori | |
504 | 584f2be7 | Alexey Kardashevskiy | static int kvm_set_ioeventfd_mmio(int fd, hwaddr addr, uint32_t val, |
505 | 41cb62c2 | Michael S. Tsirkin | bool assign, uint32_t size, bool datamatch) |
506 | 500ffd4a | Michael S. Tsirkin | { |
507 | 500ffd4a | Michael S. Tsirkin | int ret;
|
508 | 500ffd4a | Michael S. Tsirkin | struct kvm_ioeventfd iofd;
|
509 | 500ffd4a | Michael S. Tsirkin | |
510 | 41cb62c2 | Michael S. Tsirkin | iofd.datamatch = datamatch ? val : 0;
|
511 | 500ffd4a | Michael S. Tsirkin | iofd.addr = addr; |
512 | 500ffd4a | Michael S. Tsirkin | iofd.len = size; |
513 | 41cb62c2 | Michael S. Tsirkin | iofd.flags = 0;
|
514 | 500ffd4a | Michael S. Tsirkin | iofd.fd = fd; |
515 | 500ffd4a | Michael S. Tsirkin | |
516 | 500ffd4a | Michael S. Tsirkin | if (!kvm_enabled()) {
|
517 | 500ffd4a | Michael S. Tsirkin | return -ENOSYS;
|
518 | 500ffd4a | Michael S. Tsirkin | } |
519 | 500ffd4a | Michael S. Tsirkin | |
520 | 41cb62c2 | Michael S. Tsirkin | if (datamatch) {
|
521 | 41cb62c2 | Michael S. Tsirkin | iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; |
522 | 41cb62c2 | Michael S. Tsirkin | } |
523 | 500ffd4a | Michael S. Tsirkin | if (!assign) {
|
524 | 500ffd4a | Michael S. Tsirkin | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
525 | 500ffd4a | Michael S. Tsirkin | } |
526 | 500ffd4a | Michael S. Tsirkin | |
527 | 500ffd4a | Michael S. Tsirkin | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
528 | 500ffd4a | Michael S. Tsirkin | |
529 | 500ffd4a | Michael S. Tsirkin | if (ret < 0) { |
530 | 500ffd4a | Michael S. Tsirkin | return -errno;
|
531 | 500ffd4a | Michael S. Tsirkin | } |
532 | 500ffd4a | Michael S. Tsirkin | |
533 | 500ffd4a | Michael S. Tsirkin | return 0; |
534 | 500ffd4a | Michael S. Tsirkin | } |
535 | 500ffd4a | Michael S. Tsirkin | |
536 | 44c3f8f7 | Michael S. Tsirkin | static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val, |
537 | 41cb62c2 | Michael S. Tsirkin | bool assign, uint32_t size, bool datamatch) |
538 | 500ffd4a | Michael S. Tsirkin | { |
539 | 500ffd4a | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
540 | 41cb62c2 | Michael S. Tsirkin | .datamatch = datamatch ? val : 0,
|
541 | 500ffd4a | Michael S. Tsirkin | .addr = addr, |
542 | 41cb62c2 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_PIO, |
543 | 44c3f8f7 | Michael S. Tsirkin | .len = size, |
544 | 500ffd4a | Michael S. Tsirkin | .fd = fd, |
545 | 500ffd4a | Michael S. Tsirkin | }; |
546 | 500ffd4a | Michael S. Tsirkin | int r;
|
547 | 500ffd4a | Michael S. Tsirkin | if (!kvm_enabled()) {
|
548 | 500ffd4a | Michael S. Tsirkin | return -ENOSYS;
|
549 | 500ffd4a | Michael S. Tsirkin | } |
550 | 41cb62c2 | Michael S. Tsirkin | if (datamatch) {
|
551 | 41cb62c2 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; |
552 | 41cb62c2 | Michael S. Tsirkin | } |
553 | 500ffd4a | Michael S. Tsirkin | if (!assign) {
|
554 | 500ffd4a | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
555 | 500ffd4a | Michael S. Tsirkin | } |
556 | 500ffd4a | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
557 | 500ffd4a | Michael S. Tsirkin | if (r < 0) { |
558 | 500ffd4a | Michael S. Tsirkin | return r;
|
559 | 500ffd4a | Michael S. Tsirkin | } |
560 | 500ffd4a | Michael S. Tsirkin | return 0; |
561 | 500ffd4a | Michael S. Tsirkin | } |
562 | 500ffd4a | Michael S. Tsirkin | |
563 | 500ffd4a | Michael S. Tsirkin | |
564 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
565 | d2f2b8a7 | Stefan Hajnoczi | { |
566 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
567 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
568 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
569 | d0dcac83 | Stefan Hajnoczi | *
|
570 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
571 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
572 | d2f2b8a7 | Stefan Hajnoczi | */
|
573 | 12d4536f | Anthony Liguori | #if defined(CONFIG_EVENTFD)
|
574 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
575 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
576 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
577 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
578 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
579 | d2f2b8a7 | Stefan Hajnoczi | break;
|
580 | d2f2b8a7 | Stefan Hajnoczi | } |
581 | 41cb62c2 | Michael S. Tsirkin | ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true); |
582 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
583 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
584 | d2f2b8a7 | Stefan Hajnoczi | break;
|
585 | d2f2b8a7 | Stefan Hajnoczi | } |
586 | d2f2b8a7 | Stefan Hajnoczi | } |
587 | d2f2b8a7 | Stefan Hajnoczi | |
588 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
589 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
590 | d2f2b8a7 | Stefan Hajnoczi | |
591 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
592 | 41cb62c2 | Michael S. Tsirkin | kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true); |
593 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
594 | d2f2b8a7 | Stefan Hajnoczi | } |
595 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
596 | d2f2b8a7 | Stefan Hajnoczi | #else
|
597 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
598 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
599 | d2f2b8a7 | Stefan Hajnoczi | } |
600 | d2f2b8a7 | Stefan Hajnoczi | |
601 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
602 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
603 | 94a8d39a | Jan Kiszka | { |
604 | 94a8d39a | Jan Kiszka | while (list->name) {
|
605 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
606 | 94a8d39a | Jan Kiszka | return list;
|
607 | 94a8d39a | Jan Kiszka | } |
608 | 94a8d39a | Jan Kiszka | list++; |
609 | 94a8d39a | Jan Kiszka | } |
610 | 94a8d39a | Jan Kiszka | return NULL; |
611 | 94a8d39a | Jan Kiszka | } |
612 | 94a8d39a | Jan Kiszka | |
613 | a01672d3 | Avi Kivity | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
614 | 46dbef6a | Michael S. Tsirkin | { |
615 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
616 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
617 | 46dbef6a | Michael S. Tsirkin | int err;
|
618 | a01672d3 | Avi Kivity | MemoryRegion *mr = section->mr; |
619 | a01672d3 | Avi Kivity | bool log_dirty = memory_region_is_logging(mr);
|
620 | 235e8982 | Jordan Justen | bool writeable = !mr->readonly && !mr->rom_device;
|
621 | 235e8982 | Jordan Justen | bool readonly_flag = mr->readonly || memory_region_is_romd(mr);
|
622 | a8170e5e | Avi Kivity | hwaddr start_addr = section->offset_within_address_space; |
623 | 052e87b0 | Paolo Bonzini | ram_addr_t size = int128_get64(section->size); |
624 | 9f213ed9 | Avi Kivity | void *ram = NULL; |
625 | 8f6f962b | Avi Kivity | unsigned delta;
|
626 | 46dbef6a | Michael S. Tsirkin | |
627 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
628 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
629 | 8f6f962b | Avi Kivity | delta = TARGET_PAGE_ALIGN(size) - size; |
630 | 8f6f962b | Avi Kivity | if (delta > size) {
|
631 | 8f6f962b | Avi Kivity | return;
|
632 | 8f6f962b | Avi Kivity | } |
633 | 8f6f962b | Avi Kivity | start_addr += delta; |
634 | 8f6f962b | Avi Kivity | size -= delta; |
635 | 8f6f962b | Avi Kivity | size &= TARGET_PAGE_MASK; |
636 | 8f6f962b | Avi Kivity | if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
|
637 | 8f6f962b | Avi Kivity | return;
|
638 | 8f6f962b | Avi Kivity | } |
639 | 46dbef6a | Michael S. Tsirkin | |
640 | a01672d3 | Avi Kivity | if (!memory_region_is_ram(mr)) {
|
641 | 235e8982 | Jordan Justen | if (writeable || !kvm_readonly_mem_allowed) {
|
642 | 235e8982 | Jordan Justen | return;
|
643 | 235e8982 | Jordan Justen | } else if (!mr->romd_mode) { |
644 | 235e8982 | Jordan Justen | /* If the memory device is not in romd_mode, then we actually want
|
645 | 235e8982 | Jordan Justen | * to remove the kvm memory slot so all accesses will trap. */
|
646 | 235e8982 | Jordan Justen | add = false;
|
647 | 235e8982 | Jordan Justen | } |
648 | 9f213ed9 | Avi Kivity | } |
649 | 9f213ed9 | Avi Kivity | |
650 | 8f6f962b | Avi Kivity | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
651 | a01672d3 | Avi Kivity | |
652 | 46dbef6a | Michael S. Tsirkin | while (1) { |
653 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
654 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
655 | 46dbef6a | Michael S. Tsirkin | break;
|
656 | 46dbef6a | Michael S. Tsirkin | } |
657 | 46dbef6a | Michael S. Tsirkin | |
658 | a01672d3 | Avi Kivity | if (add && start_addr >= mem->start_addr &&
|
659 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
660 | 9f213ed9 | Avi Kivity | (ram - start_addr == mem->ram - mem->start_addr)) { |
661 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
662 | 25254bbc | Michael S. Tsirkin | * identical parameters - update flags and done. */
|
663 | 25254bbc | Michael S. Tsirkin | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
664 | 46dbef6a | Michael S. Tsirkin | return;
|
665 | 46dbef6a | Michael S. Tsirkin | } |
666 | 46dbef6a | Michael S. Tsirkin | |
667 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
668 | 46dbef6a | Michael S. Tsirkin | |
669 | 3fbffb62 | Avi Kivity | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
|
670 | 3fbffb62 | Avi Kivity | kvm_physical_sync_dirty_bitmap(section); |
671 | 3fbffb62 | Avi Kivity | } |
672 | 3fbffb62 | Avi Kivity | |
673 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
674 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
675 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
676 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
677 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
678 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
679 | 46dbef6a | Michael S. Tsirkin | abort(); |
680 | 46dbef6a | Michael S. Tsirkin | } |
681 | 46dbef6a | Michael S. Tsirkin | |
682 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
683 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
684 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
685 | 46dbef6a | Michael S. Tsirkin | *
|
686 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
687 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
688 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
689 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
690 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
691 | a01672d3 | Avi Kivity | old.start_addr == start_addr && old.memory_size < size && add) { |
692 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
693 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
694 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
695 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
696 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
697 | 46dbef6a | Michael S. Tsirkin | |
698 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
699 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
700 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
701 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
702 | 46dbef6a | Michael S. Tsirkin | abort(); |
703 | 46dbef6a | Michael S. Tsirkin | } |
704 | 46dbef6a | Michael S. Tsirkin | |
705 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
706 | 9f213ed9 | Avi Kivity | ram += old.memory_size; |
707 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
708 | 46dbef6a | Michael S. Tsirkin | continue;
|
709 | 46dbef6a | Michael S. Tsirkin | } |
710 | 46dbef6a | Michael S. Tsirkin | |
711 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
712 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
713 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
714 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
715 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
716 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
717 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
718 | 46dbef6a | Michael S. Tsirkin | |
719 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
720 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
721 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
722 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
723 | d4d6868f | Alexander Graf | #ifdef TARGET_PPC
|
724 | d4d6868f | Alexander Graf | fprintf(stderr, "%s: This is probably because your kernel's " \
|
725 | d4d6868f | Alexander Graf | "PAGE_SIZE is too big. Please try to use 4k " \
|
726 | d4d6868f | Alexander Graf | "PAGE_SIZE!\n", __func__);
|
727 | d4d6868f | Alexander Graf | #endif
|
728 | 46dbef6a | Michael S. Tsirkin | abort(); |
729 | 46dbef6a | Michael S. Tsirkin | } |
730 | 46dbef6a | Michael S. Tsirkin | } |
731 | 46dbef6a | Michael S. Tsirkin | |
732 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
733 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
734 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
735 | 46dbef6a | Michael S. Tsirkin | |
736 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
737 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
738 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
739 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
740 | 9f213ed9 | Avi Kivity | mem->ram = old.ram + size_delta; |
741 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
742 | 46dbef6a | Michael S. Tsirkin | |
743 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
744 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
745 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
746 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
747 | 46dbef6a | Michael S. Tsirkin | abort(); |
748 | 46dbef6a | Michael S. Tsirkin | } |
749 | 46dbef6a | Michael S. Tsirkin | } |
750 | 46dbef6a | Michael S. Tsirkin | } |
751 | 46dbef6a | Michael S. Tsirkin | |
752 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
753 | a426e122 | Jan Kiszka | if (!size) {
|
754 | 46dbef6a | Michael S. Tsirkin | return;
|
755 | a426e122 | Jan Kiszka | } |
756 | a01672d3 | Avi Kivity | if (!add) {
|
757 | 46dbef6a | Michael S. Tsirkin | return;
|
758 | a426e122 | Jan Kiszka | } |
759 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
760 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
761 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
762 | 9f213ed9 | Avi Kivity | mem->ram = ram; |
763 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
764 | 46dbef6a | Michael S. Tsirkin | |
765 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
766 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
767 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
768 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
769 | 46dbef6a | Michael S. Tsirkin | abort(); |
770 | 46dbef6a | Michael S. Tsirkin | } |
771 | 46dbef6a | Michael S. Tsirkin | } |
772 | 46dbef6a | Michael S. Tsirkin | |
773 | a01672d3 | Avi Kivity | static void kvm_region_add(MemoryListener *listener, |
774 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
775 | a01672d3 | Avi Kivity | { |
776 | dfde4e6e | Paolo Bonzini | memory_region_ref(section->mr); |
777 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, true);
|
778 | a01672d3 | Avi Kivity | } |
779 | a01672d3 | Avi Kivity | |
780 | a01672d3 | Avi Kivity | static void kvm_region_del(MemoryListener *listener, |
781 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
782 | a01672d3 | Avi Kivity | { |
783 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, false);
|
784 | dfde4e6e | Paolo Bonzini | memory_region_unref(section->mr); |
785 | a01672d3 | Avi Kivity | } |
786 | a01672d3 | Avi Kivity | |
787 | a01672d3 | Avi Kivity | static void kvm_log_sync(MemoryListener *listener, |
788 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
789 | 7b8f3b78 | Michael S. Tsirkin | { |
790 | a01672d3 | Avi Kivity | int r;
|
791 | a01672d3 | Avi Kivity | |
792 | ffcde12f | Avi Kivity | r = kvm_physical_sync_dirty_bitmap(section); |
793 | a01672d3 | Avi Kivity | if (r < 0) { |
794 | a01672d3 | Avi Kivity | abort(); |
795 | a01672d3 | Avi Kivity | } |
796 | 7b8f3b78 | Michael S. Tsirkin | } |
797 | 7b8f3b78 | Michael S. Tsirkin | |
798 | a01672d3 | Avi Kivity | static void kvm_log_global_start(struct MemoryListener *listener) |
799 | 7b8f3b78 | Michael S. Tsirkin | { |
800 | a01672d3 | Avi Kivity | int r;
|
801 | a01672d3 | Avi Kivity | |
802 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(1);
|
803 | a01672d3 | Avi Kivity | assert(r >= 0);
|
804 | 7b8f3b78 | Michael S. Tsirkin | } |
805 | 7b8f3b78 | Michael S. Tsirkin | |
806 | a01672d3 | Avi Kivity | static void kvm_log_global_stop(struct MemoryListener *listener) |
807 | 7b8f3b78 | Michael S. Tsirkin | { |
808 | a01672d3 | Avi Kivity | int r;
|
809 | a01672d3 | Avi Kivity | |
810 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(0);
|
811 | a01672d3 | Avi Kivity | assert(r >= 0);
|
812 | 7b8f3b78 | Michael S. Tsirkin | } |
813 | 7b8f3b78 | Michael S. Tsirkin | |
814 | d22b096e | Avi Kivity | static void kvm_mem_ioeventfd_add(MemoryListener *listener, |
815 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
816 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
817 | d22b096e | Avi Kivity | EventNotifier *e) |
818 | d22b096e | Avi Kivity | { |
819 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
820 | 80a1ea37 | Avi Kivity | int r;
|
821 | 80a1ea37 | Avi Kivity | |
822 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
823 | 052e87b0 | Paolo Bonzini | data, true, int128_get64(section->size),
|
824 | 052e87b0 | Paolo Bonzini | match_data); |
825 | 80a1ea37 | Avi Kivity | if (r < 0) { |
826 | fa4ba923 | Amos Kong | fprintf(stderr, "%s: error adding ioeventfd: %s\n",
|
827 | fa4ba923 | Amos Kong | __func__, strerror(-r)); |
828 | 80a1ea37 | Avi Kivity | abort(); |
829 | 80a1ea37 | Avi Kivity | } |
830 | 80a1ea37 | Avi Kivity | } |
831 | 80a1ea37 | Avi Kivity | |
832 | d22b096e | Avi Kivity | static void kvm_mem_ioeventfd_del(MemoryListener *listener, |
833 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
834 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
835 | d22b096e | Avi Kivity | EventNotifier *e) |
836 | 80a1ea37 | Avi Kivity | { |
837 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
838 | 80a1ea37 | Avi Kivity | int r;
|
839 | 80a1ea37 | Avi Kivity | |
840 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
841 | 052e87b0 | Paolo Bonzini | data, false, int128_get64(section->size),
|
842 | 052e87b0 | Paolo Bonzini | match_data); |
843 | 80a1ea37 | Avi Kivity | if (r < 0) { |
844 | 80a1ea37 | Avi Kivity | abort(); |
845 | 80a1ea37 | Avi Kivity | } |
846 | 80a1ea37 | Avi Kivity | } |
847 | 80a1ea37 | Avi Kivity | |
848 | d22b096e | Avi Kivity | static void kvm_io_ioeventfd_add(MemoryListener *listener, |
849 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
850 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
851 | d22b096e | Avi Kivity | EventNotifier *e) |
852 | 80a1ea37 | Avi Kivity | { |
853 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
854 | 80a1ea37 | Avi Kivity | int r;
|
855 | 80a1ea37 | Avi Kivity | |
856 | 44c3f8f7 | Michael S. Tsirkin | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
857 | 052e87b0 | Paolo Bonzini | data, true, int128_get64(section->size),
|
858 | 052e87b0 | Paolo Bonzini | match_data); |
859 | 80a1ea37 | Avi Kivity | if (r < 0) { |
860 | fa4ba923 | Amos Kong | fprintf(stderr, "%s: error adding ioeventfd: %s\n",
|
861 | fa4ba923 | Amos Kong | __func__, strerror(-r)); |
862 | 80a1ea37 | Avi Kivity | abort(); |
863 | 80a1ea37 | Avi Kivity | } |
864 | 80a1ea37 | Avi Kivity | } |
865 | 80a1ea37 | Avi Kivity | |
866 | d22b096e | Avi Kivity | static void kvm_io_ioeventfd_del(MemoryListener *listener, |
867 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
868 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
869 | d22b096e | Avi Kivity | EventNotifier *e) |
870 | 80a1ea37 | Avi Kivity | |
871 | 80a1ea37 | Avi Kivity | { |
872 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
873 | 80a1ea37 | Avi Kivity | int r;
|
874 | 80a1ea37 | Avi Kivity | |
875 | 44c3f8f7 | Michael S. Tsirkin | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
876 | 052e87b0 | Paolo Bonzini | data, false, int128_get64(section->size),
|
877 | 052e87b0 | Paolo Bonzini | match_data); |
878 | 80a1ea37 | Avi Kivity | if (r < 0) { |
879 | 80a1ea37 | Avi Kivity | abort(); |
880 | 80a1ea37 | Avi Kivity | } |
881 | 80a1ea37 | Avi Kivity | } |
882 | 80a1ea37 | Avi Kivity | |
883 | a01672d3 | Avi Kivity | static MemoryListener kvm_memory_listener = {
|
884 | a01672d3 | Avi Kivity | .region_add = kvm_region_add, |
885 | a01672d3 | Avi Kivity | .region_del = kvm_region_del, |
886 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
887 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
888 | a01672d3 | Avi Kivity | .log_sync = kvm_log_sync, |
889 | a01672d3 | Avi Kivity | .log_global_start = kvm_log_global_start, |
890 | a01672d3 | Avi Kivity | .log_global_stop = kvm_log_global_stop, |
891 | d22b096e | Avi Kivity | .eventfd_add = kvm_mem_ioeventfd_add, |
892 | d22b096e | Avi Kivity | .eventfd_del = kvm_mem_ioeventfd_del, |
893 | 95d2994a | Avi Kivity | .coalesced_mmio_add = kvm_coalesce_mmio_region, |
894 | 95d2994a | Avi Kivity | .coalesced_mmio_del = kvm_uncoalesce_mmio_region, |
895 | d22b096e | Avi Kivity | .priority = 10,
|
896 | d22b096e | Avi Kivity | }; |
897 | d22b096e | Avi Kivity | |
898 | d22b096e | Avi Kivity | static MemoryListener kvm_io_listener = {
|
899 | d22b096e | Avi Kivity | .eventfd_add = kvm_io_ioeventfd_add, |
900 | d22b096e | Avi Kivity | .eventfd_del = kvm_io_ioeventfd_del, |
901 | 72e22d2f | Avi Kivity | .priority = 10,
|
902 | 7b8f3b78 | Michael S. Tsirkin | }; |
903 | 7b8f3b78 | Michael S. Tsirkin | |
904 | c3affe56 | Andreas Färber | static void kvm_handle_interrupt(CPUState *cpu, int mask) |
905 | aa7f74d1 | Jan Kiszka | { |
906 | 259186a7 | Andreas Färber | cpu->interrupt_request |= mask; |
907 | aa7f74d1 | Jan Kiszka | |
908 | 60e82579 | Andreas Färber | if (!qemu_cpu_is_self(cpu)) {
|
909 | c08d7424 | Andreas Färber | qemu_cpu_kick(cpu); |
910 | aa7f74d1 | Jan Kiszka | } |
911 | aa7f74d1 | Jan Kiszka | } |
912 | aa7f74d1 | Jan Kiszka | |
913 | 3889c3fa | Peter Maydell | int kvm_set_irq(KVMState *s, int irq, int level) |
914 | 84b058d7 | Jan Kiszka | { |
915 | 84b058d7 | Jan Kiszka | struct kvm_irq_level event;
|
916 | 84b058d7 | Jan Kiszka | int ret;
|
917 | 84b058d7 | Jan Kiszka | |
918 | 7ae26bd4 | Peter Maydell | assert(kvm_async_interrupts_enabled()); |
919 | 84b058d7 | Jan Kiszka | |
920 | 84b058d7 | Jan Kiszka | event.level = level; |
921 | 84b058d7 | Jan Kiszka | event.irq = irq; |
922 | e333cd69 | Jan Kiszka | ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event); |
923 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
924 | 3889c3fa | Peter Maydell | perror("kvm_set_irq");
|
925 | 84b058d7 | Jan Kiszka | abort(); |
926 | 84b058d7 | Jan Kiszka | } |
927 | 84b058d7 | Jan Kiszka | |
928 | e333cd69 | Jan Kiszka | return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
929 | 84b058d7 | Jan Kiszka | } |
930 | 84b058d7 | Jan Kiszka | |
931 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
932 | d3d3bef0 | Jan Kiszka | typedef struct KVMMSIRoute { |
933 | d3d3bef0 | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
934 | d3d3bef0 | Jan Kiszka | QTAILQ_ENTRY(KVMMSIRoute) entry; |
935 | d3d3bef0 | Jan Kiszka | } KVMMSIRoute; |
936 | d3d3bef0 | Jan Kiszka | |
937 | 84b058d7 | Jan Kiszka | static void set_gsi(KVMState *s, unsigned int gsi) |
938 | 84b058d7 | Jan Kiszka | { |
939 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
940 | 84b058d7 | Jan Kiszka | } |
941 | 84b058d7 | Jan Kiszka | |
942 | 04fa27f5 | Jan Kiszka | static void clear_gsi(KVMState *s, unsigned int gsi) |
943 | 04fa27f5 | Jan Kiszka | { |
944 | 04fa27f5 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32)); |
945 | 04fa27f5 | Jan Kiszka | } |
946 | 04fa27f5 | Jan Kiszka | |
947 | 7b774593 | Alexander Graf | void kvm_init_irq_routing(KVMState *s)
|
948 | 84b058d7 | Jan Kiszka | { |
949 | 04fa27f5 | Jan Kiszka | int gsi_count, i;
|
950 | 84b058d7 | Jan Kiszka | |
951 | 84b058d7 | Jan Kiszka | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
952 | 84b058d7 | Jan Kiszka | if (gsi_count > 0) { |
953 | 84b058d7 | Jan Kiszka | unsigned int gsi_bits, i; |
954 | 84b058d7 | Jan Kiszka | |
955 | 84b058d7 | Jan Kiszka | /* Round up so we can search ints using ffs */
|
956 | bc8c6788 | Jason Baron | gsi_bits = ALIGN(gsi_count, 32);
|
957 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
|
958 | 4e2e4e63 | Jan Kiszka | s->gsi_count = gsi_count; |
959 | 84b058d7 | Jan Kiszka | |
960 | 84b058d7 | Jan Kiszka | /* Mark any over-allocated bits as already in use */
|
961 | 84b058d7 | Jan Kiszka | for (i = gsi_count; i < gsi_bits; i++) {
|
962 | 84b058d7 | Jan Kiszka | set_gsi(s, i); |
963 | 84b058d7 | Jan Kiszka | } |
964 | 84b058d7 | Jan Kiszka | } |
965 | 84b058d7 | Jan Kiszka | |
966 | 84b058d7 | Jan Kiszka | s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
|
967 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = 0;
|
968 | 84b058d7 | Jan Kiszka | |
969 | 4a3adebb | Jan Kiszka | if (!s->direct_msi) {
|
970 | 4a3adebb | Jan Kiszka | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { |
971 | 4a3adebb | Jan Kiszka | QTAILQ_INIT(&s->msi_hashtab[i]); |
972 | 4a3adebb | Jan Kiszka | } |
973 | 04fa27f5 | Jan Kiszka | } |
974 | 04fa27f5 | Jan Kiszka | |
975 | 84b058d7 | Jan Kiszka | kvm_arch_init_irq_routing(s); |
976 | 84b058d7 | Jan Kiszka | } |
977 | 84b058d7 | Jan Kiszka | |
978 | cb925cf9 | Alexander Graf | void kvm_irqchip_commit_routes(KVMState *s)
|
979 | e7b20308 | Jan Kiszka | { |
980 | e7b20308 | Jan Kiszka | int ret;
|
981 | e7b20308 | Jan Kiszka | |
982 | e7b20308 | Jan Kiszka | s->irq_routes->flags = 0;
|
983 | e7b20308 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); |
984 | e7b20308 | Jan Kiszka | assert(ret == 0);
|
985 | e7b20308 | Jan Kiszka | } |
986 | e7b20308 | Jan Kiszka | |
987 | 84b058d7 | Jan Kiszka | static void kvm_add_routing_entry(KVMState *s, |
988 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *entry)
|
989 | 84b058d7 | Jan Kiszka | { |
990 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *new;
|
991 | 84b058d7 | Jan Kiszka | int n, size;
|
992 | 84b058d7 | Jan Kiszka | |
993 | 84b058d7 | Jan Kiszka | if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
|
994 | 84b058d7 | Jan Kiszka | n = s->nr_allocated_irq_routes * 2;
|
995 | 84b058d7 | Jan Kiszka | if (n < 64) { |
996 | 84b058d7 | Jan Kiszka | n = 64;
|
997 | 84b058d7 | Jan Kiszka | } |
998 | 84b058d7 | Jan Kiszka | size = sizeof(struct kvm_irq_routing); |
999 | 84b058d7 | Jan Kiszka | size += n * sizeof(*new);
|
1000 | 84b058d7 | Jan Kiszka | s->irq_routes = g_realloc(s->irq_routes, size); |
1001 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = n; |
1002 | 84b058d7 | Jan Kiszka | } |
1003 | 84b058d7 | Jan Kiszka | n = s->irq_routes->nr++; |
1004 | 84b058d7 | Jan Kiszka | new = &s->irq_routes->entries[n]; |
1005 | 0fbc2074 | Michael S. Tsirkin | |
1006 | 0fbc2074 | Michael S. Tsirkin | *new = *entry; |
1007 | 84b058d7 | Jan Kiszka | |
1008 | 84b058d7 | Jan Kiszka | set_gsi(s, entry->gsi); |
1009 | 84b058d7 | Jan Kiszka | } |
1010 | 84b058d7 | Jan Kiszka | |
1011 | cc57407e | Jan Kiszka | static int kvm_update_routing_entry(KVMState *s, |
1012 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *new_entry)
|
1013 | cc57407e | Jan Kiszka | { |
1014 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *entry;
|
1015 | cc57407e | Jan Kiszka | int n;
|
1016 | cc57407e | Jan Kiszka | |
1017 | cc57407e | Jan Kiszka | for (n = 0; n < s->irq_routes->nr; n++) { |
1018 | cc57407e | Jan Kiszka | entry = &s->irq_routes->entries[n]; |
1019 | cc57407e | Jan Kiszka | if (entry->gsi != new_entry->gsi) {
|
1020 | cc57407e | Jan Kiszka | continue;
|
1021 | cc57407e | Jan Kiszka | } |
1022 | cc57407e | Jan Kiszka | |
1023 | 40509f7f | Michael S. Tsirkin | if(!memcmp(entry, new_entry, sizeof *entry)) { |
1024 | 40509f7f | Michael S. Tsirkin | return 0; |
1025 | 40509f7f | Michael S. Tsirkin | } |
1026 | 40509f7f | Michael S. Tsirkin | |
1027 | 0fbc2074 | Michael S. Tsirkin | *entry = *new_entry; |
1028 | cc57407e | Jan Kiszka | |
1029 | cc57407e | Jan Kiszka | kvm_irqchip_commit_routes(s); |
1030 | cc57407e | Jan Kiszka | |
1031 | cc57407e | Jan Kiszka | return 0; |
1032 | cc57407e | Jan Kiszka | } |
1033 | cc57407e | Jan Kiszka | |
1034 | cc57407e | Jan Kiszka | return -ESRCH;
|
1035 | cc57407e | Jan Kiszka | } |
1036 | cc57407e | Jan Kiszka | |
1037 | 1df186df | Jan Kiszka | void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin) |
1038 | 84b058d7 | Jan Kiszka | { |
1039 | 0fbc2074 | Michael S. Tsirkin | struct kvm_irq_routing_entry e = {};
|
1040 | 84b058d7 | Jan Kiszka | |
1041 | 4e2e4e63 | Jan Kiszka | assert(pin < s->gsi_count); |
1042 | 4e2e4e63 | Jan Kiszka | |
1043 | 84b058d7 | Jan Kiszka | e.gsi = irq; |
1044 | 84b058d7 | Jan Kiszka | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
1045 | 84b058d7 | Jan Kiszka | e.flags = 0;
|
1046 | 84b058d7 | Jan Kiszka | e.u.irqchip.irqchip = irqchip; |
1047 | 84b058d7 | Jan Kiszka | e.u.irqchip.pin = pin; |
1048 | 84b058d7 | Jan Kiszka | kvm_add_routing_entry(s, &e); |
1049 | 84b058d7 | Jan Kiszka | } |
1050 | 84b058d7 | Jan Kiszka | |
1051 | 1e2aa8be | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1052 | 04fa27f5 | Jan Kiszka | { |
1053 | 04fa27f5 | Jan Kiszka | struct kvm_irq_routing_entry *e;
|
1054 | 04fa27f5 | Jan Kiszka | int i;
|
1055 | 04fa27f5 | Jan Kiszka | |
1056 | 76fe21de | Alexey Kardashevskiy | if (kvm_gsi_direct_mapping()) {
|
1057 | 76fe21de | Alexey Kardashevskiy | return;
|
1058 | 76fe21de | Alexey Kardashevskiy | } |
1059 | 76fe21de | Alexey Kardashevskiy | |
1060 | 04fa27f5 | Jan Kiszka | for (i = 0; i < s->irq_routes->nr; i++) { |
1061 | 04fa27f5 | Jan Kiszka | e = &s->irq_routes->entries[i]; |
1062 | 04fa27f5 | Jan Kiszka | if (e->gsi == virq) {
|
1063 | 04fa27f5 | Jan Kiszka | s->irq_routes->nr--; |
1064 | 04fa27f5 | Jan Kiszka | *e = s->irq_routes->entries[s->irq_routes->nr]; |
1065 | 04fa27f5 | Jan Kiszka | } |
1066 | 04fa27f5 | Jan Kiszka | } |
1067 | 04fa27f5 | Jan Kiszka | clear_gsi(s, virq); |
1068 | 04fa27f5 | Jan Kiszka | } |
1069 | 04fa27f5 | Jan Kiszka | |
1070 | 04fa27f5 | Jan Kiszka | static unsigned int kvm_hash_msi(uint32_t data) |
1071 | 04fa27f5 | Jan Kiszka | { |
1072 | 04fa27f5 | Jan Kiszka | /* This is optimized for IA32 MSI layout. However, no other arch shall
|
1073 | 04fa27f5 | Jan Kiszka | * repeat the mistake of not providing a direct MSI injection API. */
|
1074 | 04fa27f5 | Jan Kiszka | return data & 0xff; |
1075 | 04fa27f5 | Jan Kiszka | } |
1076 | 04fa27f5 | Jan Kiszka | |
1077 | 04fa27f5 | Jan Kiszka | static void kvm_flush_dynamic_msi_routes(KVMState *s) |
1078 | 04fa27f5 | Jan Kiszka | { |
1079 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route, *next; |
1080 | 04fa27f5 | Jan Kiszka | unsigned int hash; |
1081 | 04fa27f5 | Jan Kiszka | |
1082 | 04fa27f5 | Jan Kiszka | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { |
1083 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { |
1084 | 04fa27f5 | Jan Kiszka | kvm_irqchip_release_virq(s, route->kroute.gsi); |
1085 | 04fa27f5 | Jan Kiszka | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); |
1086 | 04fa27f5 | Jan Kiszka | g_free(route); |
1087 | 04fa27f5 | Jan Kiszka | } |
1088 | 04fa27f5 | Jan Kiszka | } |
1089 | 04fa27f5 | Jan Kiszka | } |
1090 | 04fa27f5 | Jan Kiszka | |
1091 | 04fa27f5 | Jan Kiszka | static int kvm_irqchip_get_virq(KVMState *s) |
1092 | 04fa27f5 | Jan Kiszka | { |
1093 | 04fa27f5 | Jan Kiszka | uint32_t *word = s->used_gsi_bitmap; |
1094 | 04fa27f5 | Jan Kiszka | int max_words = ALIGN(s->gsi_count, 32) / 32; |
1095 | 04fa27f5 | Jan Kiszka | int i, bit;
|
1096 | 04fa27f5 | Jan Kiszka | bool retry = true; |
1097 | 04fa27f5 | Jan Kiszka | |
1098 | 04fa27f5 | Jan Kiszka | again:
|
1099 | 04fa27f5 | Jan Kiszka | /* Return the lowest unused GSI in the bitmap */
|
1100 | 04fa27f5 | Jan Kiszka | for (i = 0; i < max_words; i++) { |
1101 | 04fa27f5 | Jan Kiszka | bit = ffs(~word[i]); |
1102 | 04fa27f5 | Jan Kiszka | if (!bit) {
|
1103 | 04fa27f5 | Jan Kiszka | continue;
|
1104 | 04fa27f5 | Jan Kiszka | } |
1105 | 04fa27f5 | Jan Kiszka | |
1106 | 04fa27f5 | Jan Kiszka | return bit - 1 + i * 32; |
1107 | 04fa27f5 | Jan Kiszka | } |
1108 | 4a3adebb | Jan Kiszka | if (!s->direct_msi && retry) {
|
1109 | 04fa27f5 | Jan Kiszka | retry = false;
|
1110 | 04fa27f5 | Jan Kiszka | kvm_flush_dynamic_msi_routes(s); |
1111 | 04fa27f5 | Jan Kiszka | goto again;
|
1112 | 04fa27f5 | Jan Kiszka | } |
1113 | 04fa27f5 | Jan Kiszka | return -ENOSPC;
|
1114 | 04fa27f5 | Jan Kiszka | |
1115 | 04fa27f5 | Jan Kiszka | } |
1116 | 04fa27f5 | Jan Kiszka | |
1117 | 04fa27f5 | Jan Kiszka | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg)
|
1118 | 04fa27f5 | Jan Kiszka | { |
1119 | 04fa27f5 | Jan Kiszka | unsigned int hash = kvm_hash_msi(msg.data); |
1120 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1121 | 04fa27f5 | Jan Kiszka | |
1122 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { |
1123 | 04fa27f5 | Jan Kiszka | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address &&
|
1124 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi == (msg.address >> 32) &&
|
1125 | d07cc1f1 | Alexander Graf | route->kroute.u.msi.data == le32_to_cpu(msg.data)) { |
1126 | 04fa27f5 | Jan Kiszka | return route;
|
1127 | 04fa27f5 | Jan Kiszka | } |
1128 | 04fa27f5 | Jan Kiszka | } |
1129 | 04fa27f5 | Jan Kiszka | return NULL; |
1130 | 04fa27f5 | Jan Kiszka | } |
1131 | 04fa27f5 | Jan Kiszka | |
1132 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1133 | 04fa27f5 | Jan Kiszka | { |
1134 | 4a3adebb | Jan Kiszka | struct kvm_msi msi;
|
1135 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1136 | 04fa27f5 | Jan Kiszka | |
1137 | 4a3adebb | Jan Kiszka | if (s->direct_msi) {
|
1138 | 4a3adebb | Jan Kiszka | msi.address_lo = (uint32_t)msg.address; |
1139 | 4a3adebb | Jan Kiszka | msi.address_hi = msg.address >> 32;
|
1140 | d07cc1f1 | Alexander Graf | msi.data = le32_to_cpu(msg.data); |
1141 | 4a3adebb | Jan Kiszka | msi.flags = 0;
|
1142 | 4a3adebb | Jan Kiszka | memset(msi.pad, 0, sizeof(msi.pad)); |
1143 | 4a3adebb | Jan Kiszka | |
1144 | 4a3adebb | Jan Kiszka | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi);
|
1145 | 4a3adebb | Jan Kiszka | } |
1146 | 4a3adebb | Jan Kiszka | |
1147 | 04fa27f5 | Jan Kiszka | route = kvm_lookup_msi_route(s, msg); |
1148 | 04fa27f5 | Jan Kiszka | if (!route) {
|
1149 | e7b20308 | Jan Kiszka | int virq;
|
1150 | 04fa27f5 | Jan Kiszka | |
1151 | 04fa27f5 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1152 | 04fa27f5 | Jan Kiszka | if (virq < 0) { |
1153 | 04fa27f5 | Jan Kiszka | return virq;
|
1154 | 04fa27f5 | Jan Kiszka | } |
1155 | 04fa27f5 | Jan Kiszka | |
1156 | 0fbc2074 | Michael S. Tsirkin | route = g_malloc0(sizeof(KVMMSIRoute));
|
1157 | 04fa27f5 | Jan Kiszka | route->kroute.gsi = virq; |
1158 | 04fa27f5 | Jan Kiszka | route->kroute.type = KVM_IRQ_ROUTING_MSI; |
1159 | 04fa27f5 | Jan Kiszka | route->kroute.flags = 0;
|
1160 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_lo = (uint32_t)msg.address; |
1161 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi = msg.address >> 32;
|
1162 | d07cc1f1 | Alexander Graf | route->kroute.u.msi.data = le32_to_cpu(msg.data); |
1163 | 04fa27f5 | Jan Kiszka | |
1164 | 04fa27f5 | Jan Kiszka | kvm_add_routing_entry(s, &route->kroute); |
1165 | cb925cf9 | Alexander Graf | kvm_irqchip_commit_routes(s); |
1166 | 04fa27f5 | Jan Kiszka | |
1167 | 04fa27f5 | Jan Kiszka | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, |
1168 | 04fa27f5 | Jan Kiszka | entry); |
1169 | 04fa27f5 | Jan Kiszka | } |
1170 | 04fa27f5 | Jan Kiszka | |
1171 | 04fa27f5 | Jan Kiszka | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); |
1172 | 04fa27f5 | Jan Kiszka | |
1173 | 3889c3fa | Peter Maydell | return kvm_set_irq(s, route->kroute.gsi, 1); |
1174 | 04fa27f5 | Jan Kiszka | } |
1175 | 04fa27f5 | Jan Kiszka | |
1176 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1177 | 92b4e489 | Jan Kiszka | { |
1178 | 0fbc2074 | Michael S. Tsirkin | struct kvm_irq_routing_entry kroute = {};
|
1179 | 92b4e489 | Jan Kiszka | int virq;
|
1180 | 92b4e489 | Jan Kiszka | |
1181 | 76fe21de | Alexey Kardashevskiy | if (kvm_gsi_direct_mapping()) {
|
1182 | 76fe21de | Alexey Kardashevskiy | return msg.data & 0xffff; |
1183 | 76fe21de | Alexey Kardashevskiy | } |
1184 | 76fe21de | Alexey Kardashevskiy | |
1185 | f3e1bed8 | Peter Maydell | if (!kvm_gsi_routing_enabled()) {
|
1186 | 92b4e489 | Jan Kiszka | return -ENOSYS;
|
1187 | 92b4e489 | Jan Kiszka | } |
1188 | 92b4e489 | Jan Kiszka | |
1189 | 92b4e489 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1190 | 92b4e489 | Jan Kiszka | if (virq < 0) { |
1191 | 92b4e489 | Jan Kiszka | return virq;
|
1192 | 92b4e489 | Jan Kiszka | } |
1193 | 92b4e489 | Jan Kiszka | |
1194 | 92b4e489 | Jan Kiszka | kroute.gsi = virq; |
1195 | 92b4e489 | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1196 | 92b4e489 | Jan Kiszka | kroute.flags = 0;
|
1197 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1198 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1199 | d07cc1f1 | Alexander Graf | kroute.u.msi.data = le32_to_cpu(msg.data); |
1200 | 92b4e489 | Jan Kiszka | |
1201 | 92b4e489 | Jan Kiszka | kvm_add_routing_entry(s, &kroute); |
1202 | cb925cf9 | Alexander Graf | kvm_irqchip_commit_routes(s); |
1203 | 92b4e489 | Jan Kiszka | |
1204 | 92b4e489 | Jan Kiszka | return virq;
|
1205 | 92b4e489 | Jan Kiszka | } |
1206 | 92b4e489 | Jan Kiszka | |
1207 | cc57407e | Jan Kiszka | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1208 | cc57407e | Jan Kiszka | { |
1209 | 0fbc2074 | Michael S. Tsirkin | struct kvm_irq_routing_entry kroute = {};
|
1210 | cc57407e | Jan Kiszka | |
1211 | 76fe21de | Alexey Kardashevskiy | if (kvm_gsi_direct_mapping()) {
|
1212 | 76fe21de | Alexey Kardashevskiy | return 0; |
1213 | 76fe21de | Alexey Kardashevskiy | } |
1214 | 76fe21de | Alexey Kardashevskiy | |
1215 | cc57407e | Jan Kiszka | if (!kvm_irqchip_in_kernel()) {
|
1216 | cc57407e | Jan Kiszka | return -ENOSYS;
|
1217 | cc57407e | Jan Kiszka | } |
1218 | cc57407e | Jan Kiszka | |
1219 | cc57407e | Jan Kiszka | kroute.gsi = virq; |
1220 | cc57407e | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1221 | cc57407e | Jan Kiszka | kroute.flags = 0;
|
1222 | cc57407e | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1223 | cc57407e | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1224 | d07cc1f1 | Alexander Graf | kroute.u.msi.data = le32_to_cpu(msg.data); |
1225 | cc57407e | Jan Kiszka | |
1226 | cc57407e | Jan Kiszka | return kvm_update_routing_entry(s, &kroute);
|
1227 | cc57407e | Jan Kiszka | } |
1228 | cc57407e | Jan Kiszka | |
1229 | ca916d37 | Vincenzo Maffione | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int rfd, int virq, |
1230 | ca916d37 | Vincenzo Maffione | bool assign)
|
1231 | 39853bbc | Jan Kiszka | { |
1232 | 39853bbc | Jan Kiszka | struct kvm_irqfd irqfd = {
|
1233 | 39853bbc | Jan Kiszka | .fd = fd, |
1234 | 39853bbc | Jan Kiszka | .gsi = virq, |
1235 | 39853bbc | Jan Kiszka | .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN,
|
1236 | 39853bbc | Jan Kiszka | }; |
1237 | 39853bbc | Jan Kiszka | |
1238 | ca916d37 | Vincenzo Maffione | if (rfd != -1) { |
1239 | ca916d37 | Vincenzo Maffione | irqfd.flags |= KVM_IRQFD_FLAG_RESAMPLE; |
1240 | ca916d37 | Vincenzo Maffione | irqfd.resamplefd = rfd; |
1241 | ca916d37 | Vincenzo Maffione | } |
1242 | ca916d37 | Vincenzo Maffione | |
1243 | cc7e0ddf | Peter Maydell | if (!kvm_irqfds_enabled()) {
|
1244 | 39853bbc | Jan Kiszka | return -ENOSYS;
|
1245 | 39853bbc | Jan Kiszka | } |
1246 | 39853bbc | Jan Kiszka | |
1247 | 39853bbc | Jan Kiszka | return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd);
|
1248 | 39853bbc | Jan Kiszka | } |
1249 | 39853bbc | Jan Kiszka | |
1250 | 84b058d7 | Jan Kiszka | #else /* !KVM_CAP_IRQ_ROUTING */ |
1251 | 84b058d7 | Jan Kiszka | |
1252 | 7b774593 | Alexander Graf | void kvm_init_irq_routing(KVMState *s)
|
1253 | 84b058d7 | Jan Kiszka | { |
1254 | 84b058d7 | Jan Kiszka | } |
1255 | 04fa27f5 | Jan Kiszka | |
1256 | d3d3bef0 | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1257 | d3d3bef0 | Jan Kiszka | { |
1258 | d3d3bef0 | Jan Kiszka | } |
1259 | d3d3bef0 | Jan Kiszka | |
1260 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1261 | 04fa27f5 | Jan Kiszka | { |
1262 | 04fa27f5 | Jan Kiszka | abort(); |
1263 | 04fa27f5 | Jan Kiszka | } |
1264 | 92b4e489 | Jan Kiszka | |
1265 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1266 | 92b4e489 | Jan Kiszka | { |
1267 | df410675 | Alex Williamson | return -ENOSYS;
|
1268 | 92b4e489 | Jan Kiszka | } |
1269 | 39853bbc | Jan Kiszka | |
1270 | 39853bbc | Jan Kiszka | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1271 | 39853bbc | Jan Kiszka | { |
1272 | 39853bbc | Jan Kiszka | abort(); |
1273 | 39853bbc | Jan Kiszka | } |
1274 | dabe3143 | Michael S. Tsirkin | |
1275 | dabe3143 | Michael S. Tsirkin | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1276 | dabe3143 | Michael S. Tsirkin | { |
1277 | dabe3143 | Michael S. Tsirkin | return -ENOSYS;
|
1278 | dabe3143 | Michael S. Tsirkin | } |
1279 | 84b058d7 | Jan Kiszka | #endif /* !KVM_CAP_IRQ_ROUTING */ |
1280 | 84b058d7 | Jan Kiszka | |
1281 | ca916d37 | Vincenzo Maffione | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n,
|
1282 | ca916d37 | Vincenzo Maffione | EventNotifier *rn, int virq)
|
1283 | 39853bbc | Jan Kiszka | { |
1284 | ca916d37 | Vincenzo Maffione | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n),
|
1285 | ca916d37 | Vincenzo Maffione | rn ? event_notifier_get_fd(rn) : -1, virq, true); |
1286 | 39853bbc | Jan Kiszka | } |
1287 | 39853bbc | Jan Kiszka | |
1288 | b131c74a | Jan Kiszka | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
1289 | 15b2bd18 | Paolo Bonzini | { |
1290 | ca916d37 | Vincenzo Maffione | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), -1, virq, |
1291 | ca916d37 | Vincenzo Maffione | false);
|
1292 | 15b2bd18 | Paolo Bonzini | } |
1293 | 15b2bd18 | Paolo Bonzini | |
1294 | 84b058d7 | Jan Kiszka | static int kvm_irqchip_create(KVMState *s) |
1295 | 84b058d7 | Jan Kiszka | { |
1296 | 84b058d7 | Jan Kiszka | int ret;
|
1297 | 84b058d7 | Jan Kiszka | |
1298 | 36ad0e94 | Markus Armbruster | if (!qemu_opt_get_bool(qemu_get_machine_opts(), "kernel_irqchip", true) || |
1299 | 84b058d7 | Jan Kiszka | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
1300 | 84b058d7 | Jan Kiszka | return 0; |
1301 | 84b058d7 | Jan Kiszka | } |
1302 | 84b058d7 | Jan Kiszka | |
1303 | d6032e06 | Christoffer Dall | /* First probe and see if there's a arch-specific hook to create the
|
1304 | d6032e06 | Christoffer Dall | * in-kernel irqchip for us */
|
1305 | d6032e06 | Christoffer Dall | ret = kvm_arch_irqchip_create(s); |
1306 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1307 | 84b058d7 | Jan Kiszka | return ret;
|
1308 | d6032e06 | Christoffer Dall | } else if (ret == 0) { |
1309 | d6032e06 | Christoffer Dall | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
1310 | d6032e06 | Christoffer Dall | if (ret < 0) { |
1311 | d6032e06 | Christoffer Dall | fprintf(stderr, "Create kernel irqchip failed\n");
|
1312 | d6032e06 | Christoffer Dall | return ret;
|
1313 | d6032e06 | Christoffer Dall | } |
1314 | 84b058d7 | Jan Kiszka | } |
1315 | 84b058d7 | Jan Kiszka | |
1316 | 3d4b2649 | Jan Kiszka | kvm_kernel_irqchip = true;
|
1317 | 7ae26bd4 | Peter Maydell | /* If we have an in-kernel IRQ chip then we must have asynchronous
|
1318 | 7ae26bd4 | Peter Maydell | * interrupt delivery (though the reverse is not necessarily true)
|
1319 | 7ae26bd4 | Peter Maydell | */
|
1320 | 7ae26bd4 | Peter Maydell | kvm_async_interrupts_allowed = true;
|
1321 | 215e79c0 | Alexander Graf | kvm_halt_in_kernel_allowed = true;
|
1322 | 84b058d7 | Jan Kiszka | |
1323 | 84b058d7 | Jan Kiszka | kvm_init_irq_routing(s); |
1324 | 84b058d7 | Jan Kiszka | |
1325 | 84b058d7 | Jan Kiszka | return 0; |
1326 | 84b058d7 | Jan Kiszka | } |
1327 | 84b058d7 | Jan Kiszka | |
1328 | 670436ce | Andrew Jones | /* Find number of supported CPUs using the recommended
|
1329 | 670436ce | Andrew Jones | * procedure from the kernel API documentation to cope with
|
1330 | 670436ce | Andrew Jones | * older kernels that may be missing capabilities.
|
1331 | 670436ce | Andrew Jones | */
|
1332 | 670436ce | Andrew Jones | static int kvm_recommended_vcpus(KVMState *s) |
1333 | 3ed444e9 | Dunrong Huang | { |
1334 | 670436ce | Andrew Jones | int ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS);
|
1335 | 670436ce | Andrew Jones | return (ret) ? ret : 4; |
1336 | 670436ce | Andrew Jones | } |
1337 | 3ed444e9 | Dunrong Huang | |
1338 | 670436ce | Andrew Jones | static int kvm_max_vcpus(KVMState *s) |
1339 | 670436ce | Andrew Jones | { |
1340 | 670436ce | Andrew Jones | int ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS);
|
1341 | 670436ce | Andrew Jones | return (ret) ? ret : kvm_recommended_vcpus(s);
|
1342 | 3ed444e9 | Dunrong Huang | } |
1343 | 3ed444e9 | Dunrong Huang | |
1344 | 135a129a | Aneesh Kumar K.V | int kvm_init(QEMUMachine *machine)
|
1345 | 05330448 | aliguori | { |
1346 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
1347 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
1348 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
1349 | 670436ce | Andrew Jones | struct {
|
1350 | 670436ce | Andrew Jones | const char *name; |
1351 | 670436ce | Andrew Jones | int num;
|
1352 | 670436ce | Andrew Jones | } num_cpus[] = { |
1353 | 670436ce | Andrew Jones | { "SMP", smp_cpus },
|
1354 | 670436ce | Andrew Jones | { "hotpluggable", max_cpus },
|
1355 | 670436ce | Andrew Jones | { NULL, }
|
1356 | 670436ce | Andrew Jones | }, *nc = num_cpus; |
1357 | 670436ce | Andrew Jones | int soft_vcpus_limit, hard_vcpus_limit;
|
1358 | 05330448 | aliguori | KVMState *s; |
1359 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
1360 | 05330448 | aliguori | int ret;
|
1361 | 135a129a | Aneesh Kumar K.V | int i, type = 0; |
1362 | 135a129a | Aneesh Kumar K.V | const char *kvm_type; |
1363 | 05330448 | aliguori | |
1364 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(KVMState));
|
1365 | 05330448 | aliguori | |
1366 | 3145fcb6 | David Gibson | /*
|
1367 | 3145fcb6 | David Gibson | * On systems where the kernel can support different base page
|
1368 | 3145fcb6 | David Gibson | * sizes, host page size may be different from TARGET_PAGE_SIZE,
|
1369 | 3145fcb6 | David Gibson | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum
|
1370 | 3145fcb6 | David Gibson | * page size for the system though.
|
1371 | 3145fcb6 | David Gibson | */
|
1372 | 3145fcb6 | David Gibson | assert(TARGET_PAGE_SIZE <= getpagesize()); |
1373 | 47c16ed5 | Alexey Kardashevskiy | page_size_init(); |
1374 | 3145fcb6 | David Gibson | |
1375 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1376 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
1377 | e22a25c9 | aliguori | #endif
|
1378 | 05330448 | aliguori | s->vmfd = -1;
|
1379 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
1380 | 05330448 | aliguori | if (s->fd == -1) { |
1381 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
1382 | 05330448 | aliguori | ret = -errno; |
1383 | 05330448 | aliguori | goto err;
|
1384 | 05330448 | aliguori | } |
1385 | 05330448 | aliguori | |
1386 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
1387 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
1388 | a426e122 | Jan Kiszka | if (ret > 0) { |
1389 | 05330448 | aliguori | ret = -EINVAL; |
1390 | a426e122 | Jan Kiszka | } |
1391 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
1392 | 05330448 | aliguori | goto err;
|
1393 | 05330448 | aliguori | } |
1394 | 05330448 | aliguori | |
1395 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
1396 | 05330448 | aliguori | ret = -EINVAL; |
1397 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
1398 | 05330448 | aliguori | goto err;
|
1399 | 05330448 | aliguori | } |
1400 | 05330448 | aliguori | |
1401 | fb541ca5 | Alex Williamson | s->nr_slots = kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS); |
1402 | fb541ca5 | Alex Williamson | |
1403 | fb541ca5 | Alex Williamson | /* If unspecified, use the default value */
|
1404 | fb541ca5 | Alex Williamson | if (!s->nr_slots) {
|
1405 | fb541ca5 | Alex Williamson | s->nr_slots = 32;
|
1406 | fb541ca5 | Alex Williamson | } |
1407 | fb541ca5 | Alex Williamson | |
1408 | fb541ca5 | Alex Williamson | s->slots = g_malloc0(s->nr_slots * sizeof(KVMSlot));
|
1409 | fb541ca5 | Alex Williamson | |
1410 | fb541ca5 | Alex Williamson | for (i = 0; i < s->nr_slots; i++) { |
1411 | fb541ca5 | Alex Williamson | s->slots[i].slot = i; |
1412 | fb541ca5 | Alex Williamson | } |
1413 | fb541ca5 | Alex Williamson | |
1414 | 670436ce | Andrew Jones | /* check the vcpu limits */
|
1415 | 670436ce | Andrew Jones | soft_vcpus_limit = kvm_recommended_vcpus(s); |
1416 | 670436ce | Andrew Jones | hard_vcpus_limit = kvm_max_vcpus(s); |
1417 | 3ed444e9 | Dunrong Huang | |
1418 | 670436ce | Andrew Jones | while (nc->name) {
|
1419 | 670436ce | Andrew Jones | if (nc->num > soft_vcpus_limit) {
|
1420 | 670436ce | Andrew Jones | fprintf(stderr, |
1421 | 670436ce | Andrew Jones | "Warning: Number of %s cpus requested (%d) exceeds "
|
1422 | 670436ce | Andrew Jones | "the recommended cpus supported by KVM (%d)\n",
|
1423 | 670436ce | Andrew Jones | nc->name, nc->num, soft_vcpus_limit); |
1424 | 670436ce | Andrew Jones | |
1425 | 670436ce | Andrew Jones | if (nc->num > hard_vcpus_limit) {
|
1426 | 670436ce | Andrew Jones | ret = -EINVAL; |
1427 | 670436ce | Andrew Jones | fprintf(stderr, "Number of %s cpus requested (%d) exceeds "
|
1428 | 670436ce | Andrew Jones | "the maximum cpus supported by KVM (%d)\n",
|
1429 | 670436ce | Andrew Jones | nc->name, nc->num, hard_vcpus_limit); |
1430 | 670436ce | Andrew Jones | goto err;
|
1431 | 670436ce | Andrew Jones | } |
1432 | 670436ce | Andrew Jones | } |
1433 | 670436ce | Andrew Jones | nc++; |
1434 | 7dc52526 | Marcelo Tosatti | } |
1435 | 7dc52526 | Marcelo Tosatti | |
1436 | 135a129a | Aneesh Kumar K.V | kvm_type = qemu_opt_get(qemu_get_machine_opts(), "kvm-type");
|
1437 | 135a129a | Aneesh Kumar K.V | if (machine->kvm_type) {
|
1438 | 135a129a | Aneesh Kumar K.V | type = machine->kvm_type(kvm_type); |
1439 | 135a129a | Aneesh Kumar K.V | } else if (kvm_type) { |
1440 | 135a129a | Aneesh Kumar K.V | fprintf(stderr, "Invalid argument kvm-type=%s\n", kvm_type);
|
1441 | 135a129a | Aneesh Kumar K.V | goto err;
|
1442 | 135a129a | Aneesh Kumar K.V | } |
1443 | 135a129a | Aneesh Kumar K.V | |
1444 | 94ccff13 | thomas knych | do {
|
1445 | 135a129a | Aneesh Kumar K.V | ret = kvm_ioctl(s, KVM_CREATE_VM, type); |
1446 | 94ccff13 | thomas knych | } while (ret == -EINTR);
|
1447 | 94ccff13 | thomas knych | |
1448 | 94ccff13 | thomas knych | if (ret < 0) { |
1449 | 521f438e | Alexander Graf | fprintf(stderr, "ioctl(KVM_CREATE_VM) failed: %d %s\n", -ret,
|
1450 | 94ccff13 | thomas knych | strerror(-ret)); |
1451 | 94ccff13 | thomas knych | |
1452 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
1453 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
1454 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
1455 | 0104dcac | Alexander Graf | #endif
|
1456 | 05330448 | aliguori | goto err;
|
1457 | 0104dcac | Alexander Graf | } |
1458 | 05330448 | aliguori | |
1459 | 94ccff13 | thomas knych | s->vmfd = ret; |
1460 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1461 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
1462 | 94a8d39a | Jan Kiszka | missing_cap = |
1463 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
1464 | 05330448 | aliguori | } |
1465 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
1466 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
1467 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
1468 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
1469 | d85dc283 | aliguori | goto err;
|
1470 | d85dc283 | aliguori | } |
1471 | d85dc283 | aliguori | |
1472 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
1473 | f65ed4c1 | aliguori | |
1474 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
1475 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
1476 | e69917e2 | Jan Kiszka | if (ret > 0) { |
1477 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
1478 | e69917e2 | Jan Kiszka | } |
1479 | e69917e2 | Jan Kiszka | |
1480 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1481 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
1482 | a0fb002c | Jan Kiszka | #endif
|
1483 | a0fb002c | Jan Kiszka | |
1484 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
1485 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
1486 | b0b1d690 | Jan Kiszka | |
1487 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1488 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
1489 | ff44f1a3 | Jan Kiszka | #endif
|
1490 | ff44f1a3 | Jan Kiszka | |
1491 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
1492 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
1493 | f1665b21 | Sheng Yang | #endif
|
1494 | f1665b21 | Sheng Yang | |
1495 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
1496 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
1497 | f1665b21 | Sheng Yang | #endif
|
1498 | f1665b21 | Sheng Yang | |
1499 | 8a7c7393 | Jan Kiszka | #ifdef KVM_CAP_PIT_STATE2
|
1500 | 8a7c7393 | Jan Kiszka | s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); |
1501 | 8a7c7393 | Jan Kiszka | #endif
|
1502 | 8a7c7393 | Jan Kiszka | |
1503 | d3d3bef0 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
1504 | 4a3adebb | Jan Kiszka | s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0);
|
1505 | d3d3bef0 | Jan Kiszka | #endif
|
1506 | 4a3adebb | Jan Kiszka | |
1507 | 3ab73842 | Jan Kiszka | s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3); |
1508 | 3ab73842 | Jan Kiszka | |
1509 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE; |
1510 | 8732fbd2 | Peter Maydell | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
|
1511 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; |
1512 | 8732fbd2 | Peter Maydell | } |
1513 | 8732fbd2 | Peter Maydell | |
1514 | df9c8b75 | Jordan Justen | #ifdef KVM_CAP_READONLY_MEM
|
1515 | df9c8b75 | Jordan Justen | kvm_readonly_mem_allowed = |
1516 | df9c8b75 | Jordan Justen | (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
|
1517 | df9c8b75 | Jordan Justen | #endif
|
1518 | df9c8b75 | Jordan Justen | |
1519 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
1520 | a426e122 | Jan Kiszka | if (ret < 0) { |
1521 | 05330448 | aliguori | goto err;
|
1522 | a426e122 | Jan Kiszka | } |
1523 | 05330448 | aliguori | |
1524 | 84b058d7 | Jan Kiszka | ret = kvm_irqchip_create(s); |
1525 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1526 | 84b058d7 | Jan Kiszka | goto err;
|
1527 | 84b058d7 | Jan Kiszka | } |
1528 | 84b058d7 | Jan Kiszka | |
1529 | 05330448 | aliguori | kvm_state = s; |
1530 | f6790af6 | Avi Kivity | memory_listener_register(&kvm_memory_listener, &address_space_memory); |
1531 | f6790af6 | Avi Kivity | memory_listener_register(&kvm_io_listener, &address_space_io); |
1532 | 05330448 | aliguori | |
1533 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1534 | d2f2b8a7 | Stefan Hajnoczi | |
1535 | aa7f74d1 | Jan Kiszka | cpu_interrupt_handler = kvm_handle_interrupt; |
1536 | aa7f74d1 | Jan Kiszka | |
1537 | 05330448 | aliguori | return 0; |
1538 | 05330448 | aliguori | |
1539 | 05330448 | aliguori | err:
|
1540 | 6d1cc321 | Stefan Weil | if (s->vmfd >= 0) { |
1541 | 6d1cc321 | Stefan Weil | close(s->vmfd); |
1542 | 6d1cc321 | Stefan Weil | } |
1543 | 6d1cc321 | Stefan Weil | if (s->fd != -1) { |
1544 | 6d1cc321 | Stefan Weil | close(s->fd); |
1545 | 05330448 | aliguori | } |
1546 | fb541ca5 | Alex Williamson | g_free(s->slots); |
1547 | 7267c094 | Anthony Liguori | g_free(s); |
1548 | 05330448 | aliguori | |
1549 | 05330448 | aliguori | return ret;
|
1550 | 05330448 | aliguori | } |
1551 | 05330448 | aliguori | |
1552 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1553 | b30e93e9 | Jan Kiszka | uint32_t count) |
1554 | 05330448 | aliguori | { |
1555 | 05330448 | aliguori | int i;
|
1556 | 05330448 | aliguori | uint8_t *ptr = data; |
1557 | 05330448 | aliguori | |
1558 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
1559 | 354678c5 | Jan Kiszka | address_space_rw(&address_space_io, port, ptr, size, |
1560 | 354678c5 | Jan Kiszka | direction == KVM_EXIT_IO_OUT); |
1561 | 05330448 | aliguori | ptr += size; |
1562 | 05330448 | aliguori | } |
1563 | 05330448 | aliguori | } |
1564 | 05330448 | aliguori | |
1565 | 5326ab55 | Andreas Färber | static int kvm_handle_internal_error(CPUState *cpu, struct kvm_run *run) |
1566 | 7c80eef8 | Marcelo Tosatti | { |
1567 | 977c7b6d | Radim Krčmář | fprintf(stderr, "KVM internal error. Suberror: %d\n",
|
1568 | 977c7b6d | Radim Krčmář | run->internal.suberror); |
1569 | 977c7b6d | Radim Krčmář | |
1570 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
1571 | 7c80eef8 | Marcelo Tosatti | int i;
|
1572 | 7c80eef8 | Marcelo Tosatti | |
1573 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
1574 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
1575 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
1576 | 7c80eef8 | Marcelo Tosatti | } |
1577 | 7c80eef8 | Marcelo Tosatti | } |
1578 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
1579 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
1580 | 20d695a9 | Andreas Färber | if (!kvm_arch_stop_on_emulation_error(cpu)) {
|
1581 | 878096ee | Andreas Färber | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
1582 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
1583 | a426e122 | Jan Kiszka | } |
1584 | 7c80eef8 | Marcelo Tosatti | } |
1585 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
1586 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
1587 | 7c80eef8 | Marcelo Tosatti | */
|
1588 | 73aaec4a | Jan Kiszka | return -1; |
1589 | 7c80eef8 | Marcelo Tosatti | } |
1590 | 7c80eef8 | Marcelo Tosatti | |
1591 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
1592 | f65ed4c1 | aliguori | { |
1593 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
1594 | 1cae88b9 | Avi Kivity | |
1595 | 1cae88b9 | Avi Kivity | if (s->coalesced_flush_in_progress) {
|
1596 | 1cae88b9 | Avi Kivity | return;
|
1597 | 1cae88b9 | Avi Kivity | } |
1598 | 1cae88b9 | Avi Kivity | |
1599 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = true;
|
1600 | 1cae88b9 | Avi Kivity | |
1601 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
1602 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
1603 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
1604 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
1605 | f65ed4c1 | aliguori | |
1606 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
1607 | f65ed4c1 | aliguori | |
1608 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
1609 | 85199474 | Marcelo Tosatti | smp_wmb(); |
1610 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
1611 | f65ed4c1 | aliguori | } |
1612 | f65ed4c1 | aliguori | } |
1613 | 1cae88b9 | Avi Kivity | |
1614 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = false;
|
1615 | f65ed4c1 | aliguori | } |
1616 | f65ed4c1 | aliguori | |
1617 | 20d695a9 | Andreas Färber | static void do_kvm_cpu_synchronize_state(void *arg) |
1618 | 4c0960c0 | Avi Kivity | { |
1619 | 20d695a9 | Andreas Färber | CPUState *cpu = arg; |
1620 | 2705d56a | Jan Kiszka | |
1621 | 20d695a9 | Andreas Färber | if (!cpu->kvm_vcpu_dirty) {
|
1622 | 20d695a9 | Andreas Färber | kvm_arch_get_registers(cpu); |
1623 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = true;
|
1624 | 4c0960c0 | Avi Kivity | } |
1625 | 4c0960c0 | Avi Kivity | } |
1626 | 4c0960c0 | Avi Kivity | |
1627 | dd1750d7 | Andreas Färber | void kvm_cpu_synchronize_state(CPUState *cpu)
|
1628 | 2705d56a | Jan Kiszka | { |
1629 | 20d695a9 | Andreas Färber | if (!cpu->kvm_vcpu_dirty) {
|
1630 | 20d695a9 | Andreas Färber | run_on_cpu(cpu, do_kvm_cpu_synchronize_state, cpu); |
1631 | a426e122 | Jan Kiszka | } |
1632 | 2705d56a | Jan Kiszka | } |
1633 | 2705d56a | Jan Kiszka | |
1634 | 3f24a58f | Igor Mammedov | void kvm_cpu_synchronize_post_reset(CPUState *cpu)
|
1635 | ea375f9a | Jan Kiszka | { |
1636 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE); |
1637 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1638 | ea375f9a | Jan Kiszka | } |
1639 | ea375f9a | Jan Kiszka | |
1640 | 3f24a58f | Igor Mammedov | void kvm_cpu_synchronize_post_init(CPUState *cpu)
|
1641 | ea375f9a | Jan Kiszka | { |
1642 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE); |
1643 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1644 | ea375f9a | Jan Kiszka | } |
1645 | ea375f9a | Jan Kiszka | |
1646 | 1458c363 | Andreas Färber | int kvm_cpu_exec(CPUState *cpu)
|
1647 | 05330448 | aliguori | { |
1648 | f7575c96 | Andreas Färber | struct kvm_run *run = cpu->kvm_run;
|
1649 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
1650 | 05330448 | aliguori | |
1651 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
1652 | 05330448 | aliguori | |
1653 | 20d695a9 | Andreas Färber | if (kvm_arch_process_async_events(cpu)) {
|
1654 | fcd7d003 | Andreas Färber | cpu->exit_request = 0;
|
1655 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
1656 | 9ccfac9e | Jan Kiszka | } |
1657 | 0af691d7 | Marcelo Tosatti | |
1658 | 9ccfac9e | Jan Kiszka | do {
|
1659 | 20d695a9 | Andreas Färber | if (cpu->kvm_vcpu_dirty) {
|
1660 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE); |
1661 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1662 | 4c0960c0 | Avi Kivity | } |
1663 | 4c0960c0 | Avi Kivity | |
1664 | 20d695a9 | Andreas Färber | kvm_arch_pre_run(cpu, run); |
1665 | fcd7d003 | Andreas Färber | if (cpu->exit_request) {
|
1666 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
1667 | 9ccfac9e | Jan Kiszka | /*
|
1668 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
1669 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
1670 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
1671 | 9ccfac9e | Jan Kiszka | */
|
1672 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
1673 | 9ccfac9e | Jan Kiszka | } |
1674 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
1675 | 9ccfac9e | Jan Kiszka | |
1676 | 1bc22652 | Andreas Färber | run_ret = kvm_vcpu_ioctl(cpu, KVM_RUN, 0);
|
1677 | 9ccfac9e | Jan Kiszka | |
1678 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
1679 | 20d695a9 | Andreas Färber | kvm_arch_post_run(cpu, run); |
1680 | 05330448 | aliguori | |
1681 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
1682 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
1683 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
1684 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1685 | dc77d341 | Jan Kiszka | break;
|
1686 | dc77d341 | Jan Kiszka | } |
1687 | 7b011fbc | Michael Ellerman | fprintf(stderr, "error: kvm run failed %s\n",
|
1688 | 7b011fbc | Michael Ellerman | strerror(-run_ret)); |
1689 | 05330448 | aliguori | abort(); |
1690 | 05330448 | aliguori | } |
1691 | 05330448 | aliguori | |
1692 | b76ac80a | Kazuya Saito | trace_kvm_run_exit(cpu->cpu_index, run->exit_reason); |
1693 | 05330448 | aliguori | switch (run->exit_reason) {
|
1694 | 05330448 | aliguori | case KVM_EXIT_IO:
|
1695 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
1696 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
1697 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
1698 | b30e93e9 | Jan Kiszka | run->io.direction, |
1699 | b30e93e9 | Jan Kiszka | run->io.size, |
1700 | b30e93e9 | Jan Kiszka | run->io.count); |
1701 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1702 | 05330448 | aliguori | break;
|
1703 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
1704 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
1705 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
1706 | 05330448 | aliguori | run->mmio.data, |
1707 | 05330448 | aliguori | run->mmio.len, |
1708 | 05330448 | aliguori | run->mmio.is_write); |
1709 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1710 | 05330448 | aliguori | break;
|
1711 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
1712 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
1713 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1714 | 05330448 | aliguori | break;
|
1715 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
1716 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
1717 | 05330448 | aliguori | qemu_system_reset_request(); |
1718 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1719 | 05330448 | aliguori | break;
|
1720 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
1721 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1722 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
1723 | 73aaec4a | Jan Kiszka | ret = -1;
|
1724 | 05330448 | aliguori | break;
|
1725 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
1726 | 5326ab55 | Andreas Färber | ret = kvm_handle_internal_error(cpu, run); |
1727 | 7c80eef8 | Marcelo Tosatti | break;
|
1728 | 05330448 | aliguori | default:
|
1729 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
1730 | 20d695a9 | Andreas Färber | ret = kvm_arch_handle_exit(cpu, run); |
1731 | 05330448 | aliguori | break;
|
1732 | 05330448 | aliguori | } |
1733 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
1734 | 05330448 | aliguori | |
1735 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
1736 | 878096ee | Andreas Färber | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
1737 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_INTERNAL_ERROR); |
1738 | becfc390 | aliguori | } |
1739 | becfc390 | aliguori | |
1740 | fcd7d003 | Andreas Färber | cpu->exit_request = 0;
|
1741 | 05330448 | aliguori | return ret;
|
1742 | 05330448 | aliguori | } |
1743 | 05330448 | aliguori | |
1744 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1745 | 05330448 | aliguori | { |
1746 | 05330448 | aliguori | int ret;
|
1747 | 984b5181 | aliguori | void *arg;
|
1748 | 984b5181 | aliguori | va_list ap; |
1749 | 05330448 | aliguori | |
1750 | 984b5181 | aliguori | va_start(ap, type); |
1751 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1752 | 984b5181 | aliguori | va_end(ap); |
1753 | 984b5181 | aliguori | |
1754 | 9c775729 | Kazuya Saito | trace_kvm_ioctl(type, arg); |
1755 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1756 | a426e122 | Jan Kiszka | if (ret == -1) { |
1757 | 05330448 | aliguori | ret = -errno; |
1758 | a426e122 | Jan Kiszka | } |
1759 | 05330448 | aliguori | return ret;
|
1760 | 05330448 | aliguori | } |
1761 | 05330448 | aliguori | |
1762 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1763 | 05330448 | aliguori | { |
1764 | 05330448 | aliguori | int ret;
|
1765 | 984b5181 | aliguori | void *arg;
|
1766 | 984b5181 | aliguori | va_list ap; |
1767 | 984b5181 | aliguori | |
1768 | 984b5181 | aliguori | va_start(ap, type); |
1769 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1770 | 984b5181 | aliguori | va_end(ap); |
1771 | 05330448 | aliguori | |
1772 | 9c775729 | Kazuya Saito | trace_kvm_vm_ioctl(type, arg); |
1773 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1774 | a426e122 | Jan Kiszka | if (ret == -1) { |
1775 | 05330448 | aliguori | ret = -errno; |
1776 | a426e122 | Jan Kiszka | } |
1777 | 05330448 | aliguori | return ret;
|
1778 | 05330448 | aliguori | } |
1779 | 05330448 | aliguori | |
1780 | 1bc22652 | Andreas Färber | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...) |
1781 | 05330448 | aliguori | { |
1782 | 05330448 | aliguori | int ret;
|
1783 | 984b5181 | aliguori | void *arg;
|
1784 | 984b5181 | aliguori | va_list ap; |
1785 | 984b5181 | aliguori | |
1786 | 984b5181 | aliguori | va_start(ap, type); |
1787 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1788 | 984b5181 | aliguori | va_end(ap); |
1789 | 05330448 | aliguori | |
1790 | 9c775729 | Kazuya Saito | trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg); |
1791 | 8737c51c | Andreas Färber | ret = ioctl(cpu->kvm_fd, type, arg); |
1792 | a426e122 | Jan Kiszka | if (ret == -1) { |
1793 | 05330448 | aliguori | ret = -errno; |
1794 | a426e122 | Jan Kiszka | } |
1795 | 05330448 | aliguori | return ret;
|
1796 | 05330448 | aliguori | } |
1797 | bd322087 | aliguori | |
1798 | 0a6a7cca | Christoffer Dall | int kvm_device_ioctl(int fd, int type, ...) |
1799 | 0a6a7cca | Christoffer Dall | { |
1800 | 0a6a7cca | Christoffer Dall | int ret;
|
1801 | 0a6a7cca | Christoffer Dall | void *arg;
|
1802 | 0a6a7cca | Christoffer Dall | va_list ap; |
1803 | 0a6a7cca | Christoffer Dall | |
1804 | 0a6a7cca | Christoffer Dall | va_start(ap, type); |
1805 | 0a6a7cca | Christoffer Dall | arg = va_arg(ap, void *);
|
1806 | 0a6a7cca | Christoffer Dall | va_end(ap); |
1807 | 0a6a7cca | Christoffer Dall | |
1808 | 0a6a7cca | Christoffer Dall | trace_kvm_device_ioctl(fd, type, arg); |
1809 | 0a6a7cca | Christoffer Dall | ret = ioctl(fd, type, arg); |
1810 | 0a6a7cca | Christoffer Dall | if (ret == -1) { |
1811 | 0a6a7cca | Christoffer Dall | ret = -errno; |
1812 | 0a6a7cca | Christoffer Dall | } |
1813 | 0a6a7cca | Christoffer Dall | return ret;
|
1814 | 0a6a7cca | Christoffer Dall | } |
1815 | 0a6a7cca | Christoffer Dall | |
1816 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1817 | bd322087 | aliguori | { |
1818 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1819 | bd322087 | aliguori | } |
1820 | e22a25c9 | aliguori | |
1821 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1822 | a0fb002c | Jan Kiszka | { |
1823 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1824 | a0fb002c | Jan Kiszka | } |
1825 | a0fb002c | Jan Kiszka | |
1826 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1827 | b0b1d690 | Jan Kiszka | { |
1828 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1829 | b0b1d690 | Jan Kiszka | } |
1830 | b0b1d690 | Jan Kiszka | |
1831 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1832 | ff44f1a3 | Jan Kiszka | { |
1833 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1834 | ff44f1a3 | Jan Kiszka | } |
1835 | ff44f1a3 | Jan Kiszka | |
1836 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1837 | f1665b21 | Sheng Yang | { |
1838 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1839 | f1665b21 | Sheng Yang | } |
1840 | f1665b21 | Sheng Yang | |
1841 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1842 | f1665b21 | Sheng Yang | { |
1843 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1844 | f1665b21 | Sheng Yang | } |
1845 | f1665b21 | Sheng Yang | |
1846 | 8a7c7393 | Jan Kiszka | int kvm_has_pit_state2(void) |
1847 | 8a7c7393 | Jan Kiszka | { |
1848 | 8a7c7393 | Jan Kiszka | return kvm_state->pit_state2;
|
1849 | 8a7c7393 | Jan Kiszka | } |
1850 | 8a7c7393 | Jan Kiszka | |
1851 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1852 | d2f2b8a7 | Stefan Hajnoczi | { |
1853 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1854 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1855 | d2f2b8a7 | Stefan Hajnoczi | } |
1856 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1857 | d2f2b8a7 | Stefan Hajnoczi | } |
1858 | d2f2b8a7 | Stefan Hajnoczi | |
1859 | 84b058d7 | Jan Kiszka | int kvm_has_gsi_routing(void) |
1860 | 84b058d7 | Jan Kiszka | { |
1861 | a9c5eb0d | Alexander Graf | #ifdef KVM_CAP_IRQ_ROUTING
|
1862 | 84b058d7 | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
|
1863 | a9c5eb0d | Alexander Graf | #else
|
1864 | a9c5eb0d | Alexander Graf | return false; |
1865 | a9c5eb0d | Alexander Graf | #endif
|
1866 | 84b058d7 | Jan Kiszka | } |
1867 | 84b058d7 | Jan Kiszka | |
1868 | 3ab73842 | Jan Kiszka | int kvm_has_intx_set_mask(void) |
1869 | 3ab73842 | Jan Kiszka | { |
1870 | 3ab73842 | Jan Kiszka | return kvm_state->intx_set_mask;
|
1871 | 3ab73842 | Jan Kiszka | } |
1872 | 3ab73842 | Jan Kiszka | |
1873 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1874 | 6f0437e8 | Jan Kiszka | { |
1875 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
|
1876 | 62fe8331 | Christian Borntraeger | VALGRIND_MAKE_MEM_DEFINED(start, size); |
1877 | 62fe8331 | Christian Borntraeger | #endif
|
1878 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1879 | e78815a5 | Andreas Färber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1880 | 6f0437e8 | Jan Kiszka | |
1881 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1882 | e78815a5 | Andreas Färber | perror("qemu_madvise");
|
1883 | e78815a5 | Andreas Färber | fprintf(stderr, |
1884 | e78815a5 | Andreas Färber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1885 | 6f0437e8 | Jan Kiszka | exit(1);
|
1886 | 6f0437e8 | Jan Kiszka | } |
1887 | 6f0437e8 | Jan Kiszka | } |
1888 | 6f0437e8 | Jan Kiszka | } |
1889 | 6f0437e8 | Jan Kiszka | |
1890 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1891 | a60f24b5 | Andreas Färber | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu,
|
1892 | e22a25c9 | aliguori | target_ulong pc) |
1893 | e22a25c9 | aliguori | { |
1894 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1895 | e22a25c9 | aliguori | |
1896 | a60f24b5 | Andreas Färber | QTAILQ_FOREACH(bp, &cpu->kvm_state->kvm_sw_breakpoints, entry) { |
1897 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1898 | e22a25c9 | aliguori | return bp;
|
1899 | a426e122 | Jan Kiszka | } |
1900 | e22a25c9 | aliguori | } |
1901 | e22a25c9 | aliguori | return NULL; |
1902 | e22a25c9 | aliguori | } |
1903 | e22a25c9 | aliguori | |
1904 | a60f24b5 | Andreas Färber | int kvm_sw_breakpoints_active(CPUState *cpu)
|
1905 | e22a25c9 | aliguori | { |
1906 | a60f24b5 | Andreas Färber | return !QTAILQ_EMPTY(&cpu->kvm_state->kvm_sw_breakpoints);
|
1907 | e22a25c9 | aliguori | } |
1908 | e22a25c9 | aliguori | |
1909 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1910 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1911 | a60f24b5 | Andreas Färber | CPUState *cpu; |
1912 | 452e4751 | Glauber Costa | int err;
|
1913 | 452e4751 | Glauber Costa | }; |
1914 | 452e4751 | Glauber Costa | |
1915 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1916 | 452e4751 | Glauber Costa | { |
1917 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1918 | b3807725 | Jan Kiszka | |
1919 | a60f24b5 | Andreas Färber | dbg_data->err = kvm_vcpu_ioctl(dbg_data->cpu, KVM_SET_GUEST_DEBUG, |
1920 | a60f24b5 | Andreas Färber | &dbg_data->dbg); |
1921 | 452e4751 | Glauber Costa | } |
1922 | 452e4751 | Glauber Costa | |
1923 | 38e478ec | Stefan Weil | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
1924 | e22a25c9 | aliguori | { |
1925 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1926 | e22a25c9 | aliguori | |
1927 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1928 | e22a25c9 | aliguori | |
1929 | ed2803da | Andreas Färber | if (cpu->singlestep_enabled) {
|
1930 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1931 | b0b1d690 | Jan Kiszka | } |
1932 | 20d695a9 | Andreas Färber | kvm_arch_update_guest_debug(cpu, &data.dbg); |
1933 | a60f24b5 | Andreas Färber | data.cpu = cpu; |
1934 | e22a25c9 | aliguori | |
1935 | f100f0b3 | Andreas Färber | run_on_cpu(cpu, kvm_invoke_set_guest_debug, &data); |
1936 | 452e4751 | Glauber Costa | return data.err;
|
1937 | e22a25c9 | aliguori | } |
1938 | e22a25c9 | aliguori | |
1939 | 62278814 | Andreas Färber | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
|
1940 | e22a25c9 | aliguori | target_ulong len, int type)
|
1941 | e22a25c9 | aliguori | { |
1942 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1943 | e22a25c9 | aliguori | int err;
|
1944 | e22a25c9 | aliguori | |
1945 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1946 | 80b7cd73 | Andreas Färber | bp = kvm_find_sw_breakpoint(cpu, addr); |
1947 | e22a25c9 | aliguori | if (bp) {
|
1948 | e22a25c9 | aliguori | bp->use_count++; |
1949 | e22a25c9 | aliguori | return 0; |
1950 | e22a25c9 | aliguori | } |
1951 | e22a25c9 | aliguori | |
1952 | 7267c094 | Anthony Liguori | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
1953 | a426e122 | Jan Kiszka | if (!bp) {
|
1954 | e22a25c9 | aliguori | return -ENOMEM;
|
1955 | a426e122 | Jan Kiszka | } |
1956 | e22a25c9 | aliguori | |
1957 | e22a25c9 | aliguori | bp->pc = addr; |
1958 | e22a25c9 | aliguori | bp->use_count = 1;
|
1959 | 80b7cd73 | Andreas Färber | err = kvm_arch_insert_sw_breakpoint(cpu, bp); |
1960 | e22a25c9 | aliguori | if (err) {
|
1961 | 7267c094 | Anthony Liguori | g_free(bp); |
1962 | e22a25c9 | aliguori | return err;
|
1963 | e22a25c9 | aliguori | } |
1964 | e22a25c9 | aliguori | |
1965 | 80b7cd73 | Andreas Färber | QTAILQ_INSERT_HEAD(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
1966 | e22a25c9 | aliguori | } else {
|
1967 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1968 | a426e122 | Jan Kiszka | if (err) {
|
1969 | e22a25c9 | aliguori | return err;
|
1970 | a426e122 | Jan Kiszka | } |
1971 | e22a25c9 | aliguori | } |
1972 | e22a25c9 | aliguori | |
1973 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1974 | 38e478ec | Stefan Weil | err = kvm_update_guest_debug(cpu, 0);
|
1975 | a426e122 | Jan Kiszka | if (err) {
|
1976 | e22a25c9 | aliguori | return err;
|
1977 | a426e122 | Jan Kiszka | } |
1978 | e22a25c9 | aliguori | } |
1979 | e22a25c9 | aliguori | return 0; |
1980 | e22a25c9 | aliguori | } |
1981 | e22a25c9 | aliguori | |
1982 | 62278814 | Andreas Färber | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
|
1983 | e22a25c9 | aliguori | target_ulong len, int type)
|
1984 | e22a25c9 | aliguori | { |
1985 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1986 | e22a25c9 | aliguori | int err;
|
1987 | e22a25c9 | aliguori | |
1988 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1989 | 80b7cd73 | Andreas Färber | bp = kvm_find_sw_breakpoint(cpu, addr); |
1990 | a426e122 | Jan Kiszka | if (!bp) {
|
1991 | e22a25c9 | aliguori | return -ENOENT;
|
1992 | a426e122 | Jan Kiszka | } |
1993 | e22a25c9 | aliguori | |
1994 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1995 | e22a25c9 | aliguori | bp->use_count--; |
1996 | e22a25c9 | aliguori | return 0; |
1997 | e22a25c9 | aliguori | } |
1998 | e22a25c9 | aliguori | |
1999 | 80b7cd73 | Andreas Färber | err = kvm_arch_remove_sw_breakpoint(cpu, bp); |
2000 | a426e122 | Jan Kiszka | if (err) {
|
2001 | e22a25c9 | aliguori | return err;
|
2002 | a426e122 | Jan Kiszka | } |
2003 | e22a25c9 | aliguori | |
2004 | 80b7cd73 | Andreas Färber | QTAILQ_REMOVE(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
2005 | 7267c094 | Anthony Liguori | g_free(bp); |
2006 | e22a25c9 | aliguori | } else {
|
2007 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
2008 | a426e122 | Jan Kiszka | if (err) {
|
2009 | e22a25c9 | aliguori | return err;
|
2010 | a426e122 | Jan Kiszka | } |
2011 | e22a25c9 | aliguori | } |
2012 | e22a25c9 | aliguori | |
2013 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
2014 | 38e478ec | Stefan Weil | err = kvm_update_guest_debug(cpu, 0);
|
2015 | a426e122 | Jan Kiszka | if (err) {
|
2016 | e22a25c9 | aliguori | return err;
|
2017 | a426e122 | Jan Kiszka | } |
2018 | e22a25c9 | aliguori | } |
2019 | e22a25c9 | aliguori | return 0; |
2020 | e22a25c9 | aliguori | } |
2021 | e22a25c9 | aliguori | |
2022 | 1d5791f4 | Andreas Färber | void kvm_remove_all_breakpoints(CPUState *cpu)
|
2023 | e22a25c9 | aliguori | { |
2024 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
2025 | 80b7cd73 | Andreas Färber | KVMState *s = cpu->kvm_state; |
2026 | e22a25c9 | aliguori | |
2027 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
2028 | 80b7cd73 | Andreas Färber | if (kvm_arch_remove_sw_breakpoint(cpu, bp) != 0) { |
2029 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
2030 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
2031 | 20d695a9 | Andreas Färber | if (kvm_arch_remove_sw_breakpoint(cpu, bp) == 0) { |
2032 | e22a25c9 | aliguori | break;
|
2033 | a426e122 | Jan Kiszka | } |
2034 | e22a25c9 | aliguori | } |
2035 | e22a25c9 | aliguori | } |
2036 | 78021d6d | Jan Kiszka | QTAILQ_REMOVE(&s->kvm_sw_breakpoints, bp, entry); |
2037 | 78021d6d | Jan Kiszka | g_free(bp); |
2038 | e22a25c9 | aliguori | } |
2039 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
2040 | e22a25c9 | aliguori | |
2041 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
2042 | 38e478ec | Stefan Weil | kvm_update_guest_debug(cpu, 0);
|
2043 | a426e122 | Jan Kiszka | } |
2044 | e22a25c9 | aliguori | } |
2045 | e22a25c9 | aliguori | |
2046 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
2047 | e22a25c9 | aliguori | |
2048 | 38e478ec | Stefan Weil | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
2049 | e22a25c9 | aliguori | { |
2050 | e22a25c9 | aliguori | return -EINVAL;
|
2051 | e22a25c9 | aliguori | } |
2052 | e22a25c9 | aliguori | |
2053 | 62278814 | Andreas Färber | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
|
2054 | e22a25c9 | aliguori | target_ulong len, int type)
|
2055 | e22a25c9 | aliguori | { |
2056 | e22a25c9 | aliguori | return -EINVAL;
|
2057 | e22a25c9 | aliguori | } |
2058 | e22a25c9 | aliguori | |
2059 | 62278814 | Andreas Färber | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
|
2060 | e22a25c9 | aliguori | target_ulong len, int type)
|
2061 | e22a25c9 | aliguori | { |
2062 | e22a25c9 | aliguori | return -EINVAL;
|
2063 | e22a25c9 | aliguori | } |
2064 | e22a25c9 | aliguori | |
2065 | 1d5791f4 | Andreas Färber | void kvm_remove_all_breakpoints(CPUState *cpu)
|
2066 | e22a25c9 | aliguori | { |
2067 | e22a25c9 | aliguori | } |
2068 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
2069 | cc84de95 | Marcelo Tosatti | |
2070 | 491d6e80 | Andreas Färber | int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset) |
2071 | cc84de95 | Marcelo Tosatti | { |
2072 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
2073 | cc84de95 | Marcelo Tosatti | int r;
|
2074 | cc84de95 | Marcelo Tosatti | |
2075 | a426e122 | Jan Kiszka | if (!sigset) {
|
2076 | 1bc22652 | Andreas Färber | return kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, NULL); |
2077 | a426e122 | Jan Kiszka | } |
2078 | cc84de95 | Marcelo Tosatti | |
2079 | 7267c094 | Anthony Liguori | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
2080 | cc84de95 | Marcelo Tosatti | |
2081 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
2082 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
2083 | 1bc22652 | Andreas Färber | r = kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, sigmask); |
2084 | 7267c094 | Anthony Liguori | g_free(sigmask); |
2085 | cc84de95 | Marcelo Tosatti | |
2086 | cc84de95 | Marcelo Tosatti | return r;
|
2087 | cc84de95 | Marcelo Tosatti | } |
2088 | 290adf38 | Andreas Färber | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
2089 | a1b87fe0 | Jan Kiszka | { |
2090 | 20d695a9 | Andreas Färber | return kvm_arch_on_sigbus_vcpu(cpu, code, addr);
|
2091 | a1b87fe0 | Jan Kiszka | } |
2092 | a1b87fe0 | Jan Kiszka | |
2093 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
2094 | a1b87fe0 | Jan Kiszka | { |
2095 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
2096 | a1b87fe0 | Jan Kiszka | } |
2097 | 0a6a7cca | Christoffer Dall | |
2098 | 0a6a7cca | Christoffer Dall | int kvm_create_device(KVMState *s, uint64_t type, bool test) |
2099 | 0a6a7cca | Christoffer Dall | { |
2100 | 0a6a7cca | Christoffer Dall | int ret;
|
2101 | 0a6a7cca | Christoffer Dall | struct kvm_create_device create_dev;
|
2102 | 0a6a7cca | Christoffer Dall | |
2103 | 0a6a7cca | Christoffer Dall | create_dev.type = type; |
2104 | 0a6a7cca | Christoffer Dall | create_dev.fd = -1;
|
2105 | 0a6a7cca | Christoffer Dall | create_dev.flags = test ? KVM_CREATE_DEVICE_TEST : 0;
|
2106 | 0a6a7cca | Christoffer Dall | |
2107 | 0a6a7cca | Christoffer Dall | if (!kvm_check_extension(s, KVM_CAP_DEVICE_CTRL)) {
|
2108 | 0a6a7cca | Christoffer Dall | return -ENOTSUP;
|
2109 | 0a6a7cca | Christoffer Dall | } |
2110 | 0a6a7cca | Christoffer Dall | |
2111 | 0a6a7cca | Christoffer Dall | ret = kvm_vm_ioctl(s, KVM_CREATE_DEVICE, &create_dev); |
2112 | 0a6a7cca | Christoffer Dall | if (ret) {
|
2113 | 0a6a7cca | Christoffer Dall | return ret;
|
2114 | 0a6a7cca | Christoffer Dall | } |
2115 | 0a6a7cca | Christoffer Dall | |
2116 | 0a6a7cca | Christoffer Dall | return test ? 0 : create_dev.fd; |
2117 | 0a6a7cca | Christoffer Dall | } |