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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 | 022c62cb | Paolo Bonzini | #include "exec/address-spaces.h" |
35 | 1de7afc9 | Paolo Bonzini | #include "qemu/event_notifier.h" |
36 | 9c775729 | Kazuya Saito | #include "trace.h" |
37 | 05330448 | aliguori | |
38 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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39 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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40 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
41 | d2f2b8a7 | Stefan Hajnoczi | #endif
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42 | d2f2b8a7 | Stefan Hajnoczi | |
43 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
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44 | 62fe8331 | Christian Borntraeger | #include <valgrind/memcheck.h> |
45 | 62fe8331 | Christian Borntraeger | #endif
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46 | 62fe8331 | Christian Borntraeger | |
47 | 93148aa5 | Stefan Weil | /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */
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48 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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49 | f65ed4c1 | aliguori | |
50 | 05330448 | aliguori | //#define DEBUG_KVM
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51 | 05330448 | aliguori | |
52 | 05330448 | aliguori | #ifdef DEBUG_KVM
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53 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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54 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
55 | 05330448 | aliguori | #else
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56 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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57 | 05330448 | aliguori | do { } while (0) |
58 | 05330448 | aliguori | #endif
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59 | 05330448 | aliguori | |
60 | 04fa27f5 | Jan Kiszka | #define KVM_MSI_HASHTAB_SIZE 256 |
61 | 04fa27f5 | Jan Kiszka | |
62 | 34fc643f | aliguori | typedef struct KVMSlot |
63 | 34fc643f | aliguori | { |
64 | a8170e5e | Avi Kivity | hwaddr start_addr; |
65 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
66 | 9f213ed9 | Avi Kivity | void *ram;
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67 | 34fc643f | aliguori | int slot;
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68 | 34fc643f | aliguori | int flags;
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69 | 34fc643f | aliguori | } KVMSlot; |
70 | 05330448 | aliguori | |
71 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
72 | 5832d1f2 | aliguori | |
73 | 05330448 | aliguori | struct KVMState
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74 | 05330448 | aliguori | { |
75 | 05330448 | aliguori | KVMSlot slots[32];
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76 | 05330448 | aliguori | int fd;
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77 | 05330448 | aliguori | int vmfd;
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78 | f65ed4c1 | aliguori | int coalesced_mmio;
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79 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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80 | 1cae88b9 | Avi Kivity | bool coalesced_flush_in_progress;
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81 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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82 | 4495d6a7 | Jan Kiszka | int migration_log;
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83 | a0fb002c | Jan Kiszka | int vcpu_events;
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84 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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85 | ff44f1a3 | Jan Kiszka | int debugregs;
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86 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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87 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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88 | e22a25c9 | aliguori | #endif
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89 | 8a7c7393 | Jan Kiszka | int pit_state2;
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90 | f1665b21 | Sheng Yang | int xsave, xcrs;
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91 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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92 | 3ab73842 | Jan Kiszka | int intx_set_mask;
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93 | 92e4b519 | David Gibson | /* The man page (and posix) say ioctl numbers are signed int, but
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94 | 92e4b519 | David Gibson | * they're not. Linux, glibc and *BSD all treat ioctl numbers as
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95 | 92e4b519 | David Gibson | * unsigned, and treating them as signed here can break things */
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96 | e333cd69 | Jan Kiszka | unsigned irq_set_ioctl;
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97 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
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98 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing *irq_routes;
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99 | 84b058d7 | Jan Kiszka | int nr_allocated_irq_routes;
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100 | 84b058d7 | Jan Kiszka | uint32_t *used_gsi_bitmap; |
101 | 4e2e4e63 | Jan Kiszka | unsigned int gsi_count; |
102 | 04fa27f5 | Jan Kiszka | QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE]; |
103 | 4a3adebb | Jan Kiszka | bool direct_msi;
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104 | 84b058d7 | Jan Kiszka | #endif
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105 | 05330448 | aliguori | }; |
106 | 05330448 | aliguori | |
107 | 6a7af8cb | Jan Kiszka | KVMState *kvm_state; |
108 | 3d4b2649 | Jan Kiszka | bool kvm_kernel_irqchip;
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109 | 7ae26bd4 | Peter Maydell | bool kvm_async_interrupts_allowed;
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110 | 215e79c0 | Alexander Graf | bool kvm_halt_in_kernel_allowed;
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111 | cc7e0ddf | Peter Maydell | bool kvm_irqfds_allowed;
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112 | 614e41bc | Peter Maydell | bool kvm_msi_via_irqfd_allowed;
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113 | f3e1bed8 | Peter Maydell | bool kvm_gsi_routing_allowed;
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114 | 13eed94e | Igor Mammedov | bool kvm_allowed;
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115 | df9c8b75 | Jordan Justen | bool kvm_readonly_mem_allowed;
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116 | 05330448 | aliguori | |
117 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
118 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
119 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
120 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
121 | 94a8d39a | Jan Kiszka | }; |
122 | 94a8d39a | Jan Kiszka | |
123 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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124 | 05330448 | aliguori | { |
125 | 05330448 | aliguori | int i;
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126 | 05330448 | aliguori | |
127 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
128 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
129 | 05330448 | aliguori | return &s->slots[i];
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130 | a426e122 | Jan Kiszka | } |
131 | 05330448 | aliguori | } |
132 | 05330448 | aliguori | |
133 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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134 | d3f8d37f | aliguori | abort(); |
135 | d3f8d37f | aliguori | } |
136 | d3f8d37f | aliguori | |
137 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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138 | a8170e5e | Avi Kivity | hwaddr start_addr, |
139 | a8170e5e | Avi Kivity | hwaddr end_addr) |
140 | d3f8d37f | aliguori | { |
141 | d3f8d37f | aliguori | int i;
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142 | d3f8d37f | aliguori | |
143 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
144 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
145 | d3f8d37f | aliguori | |
146 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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147 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
148 | d3f8d37f | aliguori | return mem;
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149 | d3f8d37f | aliguori | } |
150 | d3f8d37f | aliguori | } |
151 | d3f8d37f | aliguori | |
152 | 05330448 | aliguori | return NULL; |
153 | 05330448 | aliguori | } |
154 | 05330448 | aliguori | |
155 | 6152e2ae | aliguori | /*
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156 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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157 | 6152e2ae | aliguori | */
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158 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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159 | a8170e5e | Avi Kivity | hwaddr start_addr, |
160 | a8170e5e | Avi Kivity | hwaddr end_addr) |
161 | 05330448 | aliguori | { |
162 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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163 | 05330448 | aliguori | int i;
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164 | 05330448 | aliguori | |
165 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
166 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
167 | 05330448 | aliguori | |
168 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
169 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
170 | 6152e2ae | aliguori | continue;
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171 | 6152e2ae | aliguori | } |
172 | 6152e2ae | aliguori | |
173 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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174 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
175 | 6152e2ae | aliguori | found = mem; |
176 | 6152e2ae | aliguori | } |
177 | 05330448 | aliguori | } |
178 | 05330448 | aliguori | |
179 | 6152e2ae | aliguori | return found;
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180 | 05330448 | aliguori | } |
181 | 05330448 | aliguori | |
182 | 9f213ed9 | Avi Kivity | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
183 | a8170e5e | Avi Kivity | hwaddr *phys_addr) |
184 | 983dfc3b | Huang Ying | { |
185 | 983dfc3b | Huang Ying | int i;
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186 | 983dfc3b | Huang Ying | |
187 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
188 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
189 | 983dfc3b | Huang Ying | |
190 | 9f213ed9 | Avi Kivity | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
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191 | 9f213ed9 | Avi Kivity | *phys_addr = mem->start_addr + (ram - mem->ram); |
192 | 983dfc3b | Huang Ying | return 1; |
193 | 983dfc3b | Huang Ying | } |
194 | 983dfc3b | Huang Ying | } |
195 | 983dfc3b | Huang Ying | |
196 | 983dfc3b | Huang Ying | return 0; |
197 | 983dfc3b | Huang Ying | } |
198 | 983dfc3b | Huang Ying | |
199 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
200 | 5832d1f2 | aliguori | { |
201 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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202 | 5832d1f2 | aliguori | |
203 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
204 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
205 | 9f213ed9 | Avi Kivity | mem.userspace_addr = (unsigned long)slot->ram; |
206 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
207 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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208 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
209 | 4495d6a7 | Jan Kiszka | } |
210 | 651eb0f4 | Xiao Guangrong | |
211 | 651eb0f4 | Xiao Guangrong | if (slot->memory_size && mem.flags & KVM_MEM_READONLY) {
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212 | 235e8982 | Jordan Justen | /* Set the slot size to 0 before setting the slot to the desired
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213 | 235e8982 | Jordan Justen | * value. This is needed based on KVM commit 75d61fbc. */
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214 | 235e8982 | Jordan Justen | mem.memory_size = 0;
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215 | 235e8982 | Jordan Justen | kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
216 | 235e8982 | Jordan Justen | } |
217 | 235e8982 | Jordan Justen | mem.memory_size = slot->memory_size; |
218 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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219 | 5832d1f2 | aliguori | } |
220 | 5832d1f2 | aliguori | |
221 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
222 | 8d2ba1fb | Jan Kiszka | { |
223 | 20d695a9 | Andreas Färber | CPUState *cpu = opaque; |
224 | 8d2ba1fb | Jan Kiszka | |
225 | 20d695a9 | Andreas Färber | kvm_arch_reset_vcpu(cpu); |
226 | 8d2ba1fb | Jan Kiszka | } |
227 | 5832d1f2 | aliguori | |
228 | 504134d2 | Andreas Färber | int kvm_init_vcpu(CPUState *cpu)
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229 | 05330448 | aliguori | { |
230 | 05330448 | aliguori | KVMState *s = kvm_state; |
231 | 05330448 | aliguori | long mmap_size;
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232 | 05330448 | aliguori | int ret;
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233 | 05330448 | aliguori | |
234 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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235 | 05330448 | aliguori | |
236 | b164e48e | Eduardo Habkost | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)kvm_arch_vcpu_id(cpu));
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237 | 05330448 | aliguori | if (ret < 0) { |
238 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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239 | 05330448 | aliguori | goto err;
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240 | 05330448 | aliguori | } |
241 | 05330448 | aliguori | |
242 | 8737c51c | Andreas Färber | cpu->kvm_fd = ret; |
243 | a60f24b5 | Andreas Färber | cpu->kvm_state = s; |
244 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = true;
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245 | 05330448 | aliguori | |
246 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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247 | 05330448 | aliguori | if (mmap_size < 0) { |
248 | 748a680b | Jan Kiszka | ret = mmap_size; |
249 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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250 | 05330448 | aliguori | goto err;
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251 | 05330448 | aliguori | } |
252 | 05330448 | aliguori | |
253 | f7575c96 | Andreas Färber | cpu->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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254 | 8737c51c | Andreas Färber | cpu->kvm_fd, 0);
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255 | f7575c96 | Andreas Färber | if (cpu->kvm_run == MAP_FAILED) {
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256 | 05330448 | aliguori | ret = -errno; |
257 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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258 | 05330448 | aliguori | goto err;
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259 | 05330448 | aliguori | } |
260 | 05330448 | aliguori | |
261 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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262 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
263 | f7575c96 | Andreas Färber | (void *)cpu->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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264 | a426e122 | Jan Kiszka | } |
265 | 62a2744c | Sheng Yang | |
266 | 20d695a9 | Andreas Färber | ret = kvm_arch_init_vcpu(cpu); |
267 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
268 | 20d695a9 | Andreas Färber | qemu_register_reset(kvm_reset_vcpu, cpu); |
269 | 20d695a9 | Andreas Färber | kvm_arch_reset_vcpu(cpu); |
270 | 8d2ba1fb | Jan Kiszka | } |
271 | 05330448 | aliguori | err:
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272 | 05330448 | aliguori | return ret;
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273 | 05330448 | aliguori | } |
274 | 05330448 | aliguori | |
275 | 5832d1f2 | aliguori | /*
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276 | 5832d1f2 | aliguori | * dirty pages logging control
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277 | 5832d1f2 | aliguori | */
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278 | 25254bbc | Michael S. Tsirkin | |
279 | 235e8982 | Jordan Justen | static int kvm_mem_flags(KVMState *s, bool log_dirty, bool readonly) |
280 | 25254bbc | Michael S. Tsirkin | { |
281 | 235e8982 | Jordan Justen | int flags = 0; |
282 | 235e8982 | Jordan Justen | flags = log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0;
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283 | 235e8982 | Jordan Justen | if (readonly && kvm_readonly_mem_allowed) {
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284 | 235e8982 | Jordan Justen | flags |= KVM_MEM_READONLY; |
285 | 235e8982 | Jordan Justen | } |
286 | 235e8982 | Jordan Justen | return flags;
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287 | 25254bbc | Michael S. Tsirkin | } |
288 | 25254bbc | Michael S. Tsirkin | |
289 | 25254bbc | Michael S. Tsirkin | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
290 | 5832d1f2 | aliguori | { |
291 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
292 | 25254bbc | Michael S. Tsirkin | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
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293 | 4495d6a7 | Jan Kiszka | int old_flags;
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294 | 4495d6a7 | Jan Kiszka | |
295 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
296 | 5832d1f2 | aliguori | |
297 | 235e8982 | Jordan Justen | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty, false);
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298 | 5832d1f2 | aliguori | mem->flags = flags; |
299 | 5832d1f2 | aliguori | |
300 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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301 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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302 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
303 | 4495d6a7 | Jan Kiszka | } |
304 | 25254bbc | Michael S. Tsirkin | |
305 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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306 | 25254bbc | Michael S. Tsirkin | return 0; |
307 | 4495d6a7 | Jan Kiszka | } |
308 | 4495d6a7 | Jan Kiszka | |
309 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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310 | 5832d1f2 | aliguori | } |
311 | 5832d1f2 | aliguori | |
312 | a8170e5e | Avi Kivity | static int kvm_dirty_pages_log_change(hwaddr phys_addr, |
313 | 25254bbc | Michael S. Tsirkin | ram_addr_t size, bool log_dirty)
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314 | 25254bbc | Michael S. Tsirkin | { |
315 | 25254bbc | Michael S. Tsirkin | KVMState *s = kvm_state; |
316 | 25254bbc | Michael S. Tsirkin | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
317 | 25254bbc | Michael S. Tsirkin | |
318 | 25254bbc | Michael S. Tsirkin | if (mem == NULL) { |
319 | 25254bbc | Michael S. Tsirkin | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
320 | 25254bbc | Michael S. Tsirkin | TARGET_FMT_plx "\n", __func__, phys_addr,
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321 | a8170e5e | Avi Kivity | (hwaddr)(phys_addr + size - 1));
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322 | 25254bbc | Michael S. Tsirkin | return -EINVAL;
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323 | 25254bbc | Michael S. Tsirkin | } |
324 | 25254bbc | Michael S. Tsirkin | return kvm_slot_dirty_pages_log_change(mem, log_dirty);
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325 | 25254bbc | Michael S. Tsirkin | } |
326 | 25254bbc | Michael S. Tsirkin | |
327 | a01672d3 | Avi Kivity | static void kvm_log_start(MemoryListener *listener, |
328 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
329 | 5832d1f2 | aliguori | { |
330 | a01672d3 | Avi Kivity | int r;
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331 | a01672d3 | Avi Kivity | |
332 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
333 | 052e87b0 | Paolo Bonzini | int128_get64(section->size), true);
|
334 | a01672d3 | Avi Kivity | if (r < 0) { |
335 | a01672d3 | Avi Kivity | abort(); |
336 | a01672d3 | Avi Kivity | } |
337 | 5832d1f2 | aliguori | } |
338 | 5832d1f2 | aliguori | |
339 | a01672d3 | Avi Kivity | static void kvm_log_stop(MemoryListener *listener, |
340 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
341 | 5832d1f2 | aliguori | { |
342 | a01672d3 | Avi Kivity | int r;
|
343 | a01672d3 | Avi Kivity | |
344 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
345 | 052e87b0 | Paolo Bonzini | int128_get64(section->size), false);
|
346 | a01672d3 | Avi Kivity | if (r < 0) { |
347 | a01672d3 | Avi Kivity | abort(); |
348 | a01672d3 | Avi Kivity | } |
349 | 5832d1f2 | aliguori | } |
350 | 5832d1f2 | aliguori | |
351 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
352 | 4495d6a7 | Jan Kiszka | { |
353 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
354 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
355 | 4495d6a7 | Jan Kiszka | int i, err;
|
356 | 4495d6a7 | Jan Kiszka | |
357 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
358 | 4495d6a7 | Jan Kiszka | |
359 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
360 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
361 | 4495d6a7 | Jan Kiszka | |
362 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
|
363 | 70fedd76 | Alex Williamson | continue;
|
364 | 70fedd76 | Alex Williamson | } |
365 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
|
366 | 4495d6a7 | Jan Kiszka | continue;
|
367 | 4495d6a7 | Jan Kiszka | } |
368 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
369 | 4495d6a7 | Jan Kiszka | if (err) {
|
370 | 4495d6a7 | Jan Kiszka | return err;
|
371 | 4495d6a7 | Jan Kiszka | } |
372 | 4495d6a7 | Jan Kiszka | } |
373 | 4495d6a7 | Jan Kiszka | return 0; |
374 | 4495d6a7 | Jan Kiszka | } |
375 | 4495d6a7 | Jan Kiszka | |
376 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
|
377 | ffcde12f | Avi Kivity | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
378 | ffcde12f | Avi Kivity | unsigned long *bitmap) |
379 | 96c1606b | Alexander Graf | { |
380 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
381 | aa90fec7 | Benjamin Herrenschmidt | unsigned long page_number, c; |
382 | a8170e5e | Avi Kivity | hwaddr addr, addr1; |
383 | 052e87b0 | Paolo Bonzini | unsigned int pages = int128_get64(section->size) / getpagesize(); |
384 | 052e87b0 | Paolo Bonzini | unsigned int len = (pages + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
385 | 3145fcb6 | David Gibson | unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE; |
386 | 8369e01c | Marcelo Tosatti | |
387 | 8369e01c | Marcelo Tosatti | /*
|
388 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
|
389 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
|
390 | 8369e01c | Marcelo Tosatti | */
|
391 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
392 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
393 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
394 | 8369e01c | Marcelo Tosatti | do {
|
395 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
|
396 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
397 | 3145fcb6 | David Gibson | page_number = (i * HOST_LONG_BITS + j) * hpratio; |
398 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
399 | ffcde12f | Avi Kivity | addr = section->offset_within_region + addr1; |
400 | 3145fcb6 | David Gibson | memory_region_set_dirty(section->mr, addr, |
401 | 3145fcb6 | David Gibson | TARGET_PAGE_SIZE * hpratio); |
402 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
403 | 8369e01c | Marcelo Tosatti | } |
404 | 8369e01c | Marcelo Tosatti | } |
405 | 8369e01c | Marcelo Tosatti | return 0; |
406 | 96c1606b | Alexander Graf | } |
407 | 96c1606b | Alexander Graf | |
408 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
409 | 8369e01c | Marcelo Tosatti | |
410 | 5832d1f2 | aliguori | /**
|
411 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
412 | fd4aa979 | Blue Swirl | * This function updates qemu's dirty bitmap using
|
413 | fd4aa979 | Blue Swirl | * memory_region_set_dirty(). This means all bits are set
|
414 | fd4aa979 | Blue Swirl | * to dirty.
|
415 | 5832d1f2 | aliguori | *
|
416 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
417 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
418 | 5832d1f2 | aliguori | */
|
419 | ffcde12f | Avi Kivity | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
420 | 5832d1f2 | aliguori | { |
421 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
422 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
423 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
424 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
425 | 151f7749 | Jan Kiszka | int ret = 0; |
426 | a8170e5e | Avi Kivity | hwaddr start_addr = section->offset_within_address_space; |
427 | 052e87b0 | Paolo Bonzini | hwaddr end_addr = start_addr + int128_get64(section->size); |
428 | 5832d1f2 | aliguori | |
429 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
430 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
431 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
432 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
433 | 151f7749 | Jan Kiszka | break;
|
434 | 151f7749 | Jan Kiszka | } |
435 | 5832d1f2 | aliguori | |
436 | 51b0c606 | Michael Tokarev | /* XXX bad kernel interface alert
|
437 | 51b0c606 | Michael Tokarev | * For dirty bitmap, kernel allocates array of size aligned to
|
438 | 51b0c606 | Michael Tokarev | * bits-per-long. But for case when the kernel is 64bits and
|
439 | 51b0c606 | Michael Tokarev | * the userspace is 32bits, userspace can't align to the same
|
440 | 51b0c606 | Michael Tokarev | * bits-per-long, since sizeof(long) is different between kernel
|
441 | 51b0c606 | Michael Tokarev | * and user space. This way, userspace will provide buffer which
|
442 | 51b0c606 | Michael Tokarev | * may be 4 bytes less than the kernel will use, resulting in
|
443 | 51b0c606 | Michael Tokarev | * userspace memory corruption (which is not detectable by valgrind
|
444 | 51b0c606 | Michael Tokarev | * too, in most cases).
|
445 | 51b0c606 | Michael Tokarev | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
|
446 | 51b0c606 | Michael Tokarev | * a hope that sizeof(long) wont become >8 any time soon.
|
447 | 51b0c606 | Michael Tokarev | */
|
448 | 51b0c606 | Michael Tokarev | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
449 | 51b0c606 | Michael Tokarev | /*HOST_LONG_BITS*/ 64) / 8; |
450 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
451 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_malloc(size); |
452 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
453 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
454 | 151f7749 | Jan Kiszka | } |
455 | 151f7749 | Jan Kiszka | allocated_size = size; |
456 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
457 | 5832d1f2 | aliguori | |
458 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
459 | 5832d1f2 | aliguori | |
460 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
461 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
462 | 151f7749 | Jan Kiszka | ret = -1;
|
463 | 151f7749 | Jan Kiszka | break;
|
464 | 151f7749 | Jan Kiszka | } |
465 | 5832d1f2 | aliguori | |
466 | ffcde12f | Avi Kivity | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
467 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
468 | 5832d1f2 | aliguori | } |
469 | 7267c094 | Anthony Liguori | g_free(d.dirty_bitmap); |
470 | 151f7749 | Jan Kiszka | |
471 | 151f7749 | Jan Kiszka | return ret;
|
472 | 5832d1f2 | aliguori | } |
473 | 5832d1f2 | aliguori | |
474 | 95d2994a | Avi Kivity | static void kvm_coalesce_mmio_region(MemoryListener *listener, |
475 | 95d2994a | Avi Kivity | MemoryRegionSection *secion, |
476 | a8170e5e | Avi Kivity | hwaddr start, hwaddr size) |
477 | f65ed4c1 | aliguori | { |
478 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
479 | f65ed4c1 | aliguori | |
480 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
481 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
482 | f65ed4c1 | aliguori | |
483 | f65ed4c1 | aliguori | zone.addr = start; |
484 | f65ed4c1 | aliguori | zone.size = size; |
485 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
486 | f65ed4c1 | aliguori | |
487 | 95d2994a | Avi Kivity | (void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
|
488 | f65ed4c1 | aliguori | } |
489 | f65ed4c1 | aliguori | } |
490 | f65ed4c1 | aliguori | |
491 | 95d2994a | Avi Kivity | static void kvm_uncoalesce_mmio_region(MemoryListener *listener, |
492 | 95d2994a | Avi Kivity | MemoryRegionSection *secion, |
493 | a8170e5e | Avi Kivity | hwaddr start, hwaddr size) |
494 | f65ed4c1 | aliguori | { |
495 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
496 | f65ed4c1 | aliguori | |
497 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
498 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
499 | f65ed4c1 | aliguori | |
500 | f65ed4c1 | aliguori | zone.addr = start; |
501 | f65ed4c1 | aliguori | zone.size = size; |
502 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
503 | f65ed4c1 | aliguori | |
504 | 95d2994a | Avi Kivity | (void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
|
505 | f65ed4c1 | aliguori | } |
506 | f65ed4c1 | aliguori | } |
507 | f65ed4c1 | aliguori | |
508 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
509 | ad7b8b33 | Anthony Liguori | { |
510 | ad7b8b33 | Anthony Liguori | int ret;
|
511 | ad7b8b33 | Anthony Liguori | |
512 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
513 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
514 | ad7b8b33 | Anthony Liguori | ret = 0;
|
515 | ad7b8b33 | Anthony Liguori | } |
516 | ad7b8b33 | Anthony Liguori | |
517 | ad7b8b33 | Anthony Liguori | return ret;
|
518 | ad7b8b33 | Anthony Liguori | } |
519 | ad7b8b33 | Anthony Liguori | |
520 | 44c3f8f7 | Michael S. Tsirkin | static int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val, |
521 | 41cb62c2 | Michael S. Tsirkin | bool assign, uint32_t size, bool datamatch) |
522 | 500ffd4a | Michael S. Tsirkin | { |
523 | 500ffd4a | Michael S. Tsirkin | int ret;
|
524 | 500ffd4a | Michael S. Tsirkin | struct kvm_ioeventfd iofd;
|
525 | 500ffd4a | Michael S. Tsirkin | |
526 | 41cb62c2 | Michael S. Tsirkin | iofd.datamatch = datamatch ? val : 0;
|
527 | 500ffd4a | Michael S. Tsirkin | iofd.addr = addr; |
528 | 500ffd4a | Michael S. Tsirkin | iofd.len = size; |
529 | 41cb62c2 | Michael S. Tsirkin | iofd.flags = 0;
|
530 | 500ffd4a | Michael S. Tsirkin | iofd.fd = fd; |
531 | 500ffd4a | Michael S. Tsirkin | |
532 | 500ffd4a | Michael S. Tsirkin | if (!kvm_enabled()) {
|
533 | 500ffd4a | Michael S. Tsirkin | return -ENOSYS;
|
534 | 500ffd4a | Michael S. Tsirkin | } |
535 | 500ffd4a | Michael S. Tsirkin | |
536 | 41cb62c2 | Michael S. Tsirkin | if (datamatch) {
|
537 | 41cb62c2 | Michael S. Tsirkin | iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; |
538 | 41cb62c2 | Michael S. Tsirkin | } |
539 | 500ffd4a | Michael S. Tsirkin | if (!assign) {
|
540 | 500ffd4a | Michael S. Tsirkin | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
541 | 500ffd4a | Michael S. Tsirkin | } |
542 | 500ffd4a | Michael S. Tsirkin | |
543 | 500ffd4a | Michael S. Tsirkin | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
544 | 500ffd4a | Michael S. Tsirkin | |
545 | 500ffd4a | Michael S. Tsirkin | if (ret < 0) { |
546 | 500ffd4a | Michael S. Tsirkin | return -errno;
|
547 | 500ffd4a | Michael S. Tsirkin | } |
548 | 500ffd4a | Michael S. Tsirkin | |
549 | 500ffd4a | Michael S. Tsirkin | return 0; |
550 | 500ffd4a | Michael S. Tsirkin | } |
551 | 500ffd4a | Michael S. Tsirkin | |
552 | 44c3f8f7 | Michael S. Tsirkin | static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val, |
553 | 41cb62c2 | Michael S. Tsirkin | bool assign, uint32_t size, bool datamatch) |
554 | 500ffd4a | Michael S. Tsirkin | { |
555 | 500ffd4a | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
556 | 41cb62c2 | Michael S. Tsirkin | .datamatch = datamatch ? val : 0,
|
557 | 500ffd4a | Michael S. Tsirkin | .addr = addr, |
558 | 41cb62c2 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_PIO, |
559 | 44c3f8f7 | Michael S. Tsirkin | .len = size, |
560 | 500ffd4a | Michael S. Tsirkin | .fd = fd, |
561 | 500ffd4a | Michael S. Tsirkin | }; |
562 | 500ffd4a | Michael S. Tsirkin | int r;
|
563 | 500ffd4a | Michael S. Tsirkin | if (!kvm_enabled()) {
|
564 | 500ffd4a | Michael S. Tsirkin | return -ENOSYS;
|
565 | 500ffd4a | Michael S. Tsirkin | } |
566 | 41cb62c2 | Michael S. Tsirkin | if (datamatch) {
|
567 | 41cb62c2 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; |
568 | 41cb62c2 | Michael S. Tsirkin | } |
569 | 500ffd4a | Michael S. Tsirkin | if (!assign) {
|
570 | 500ffd4a | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
571 | 500ffd4a | Michael S. Tsirkin | } |
572 | 500ffd4a | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
573 | 500ffd4a | Michael S. Tsirkin | if (r < 0) { |
574 | 500ffd4a | Michael S. Tsirkin | return r;
|
575 | 500ffd4a | Michael S. Tsirkin | } |
576 | 500ffd4a | Michael S. Tsirkin | return 0; |
577 | 500ffd4a | Michael S. Tsirkin | } |
578 | 500ffd4a | Michael S. Tsirkin | |
579 | 500ffd4a | Michael S. Tsirkin | |
580 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
581 | d2f2b8a7 | Stefan Hajnoczi | { |
582 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
583 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
584 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
585 | d0dcac83 | Stefan Hajnoczi | *
|
586 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
587 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
588 | d2f2b8a7 | Stefan Hajnoczi | */
|
589 | 12d4536f | Anthony Liguori | #if defined(CONFIG_EVENTFD)
|
590 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
591 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
592 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
593 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
594 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
595 | d2f2b8a7 | Stefan Hajnoczi | break;
|
596 | d2f2b8a7 | Stefan Hajnoczi | } |
597 | 41cb62c2 | Michael S. Tsirkin | ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true); |
598 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
599 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
600 | d2f2b8a7 | Stefan Hajnoczi | break;
|
601 | d2f2b8a7 | Stefan Hajnoczi | } |
602 | d2f2b8a7 | Stefan Hajnoczi | } |
603 | d2f2b8a7 | Stefan Hajnoczi | |
604 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
605 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
606 | d2f2b8a7 | Stefan Hajnoczi | |
607 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
608 | 41cb62c2 | Michael S. Tsirkin | kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true); |
609 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
610 | d2f2b8a7 | Stefan Hajnoczi | } |
611 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
612 | d2f2b8a7 | Stefan Hajnoczi | #else
|
613 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
614 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
615 | d2f2b8a7 | Stefan Hajnoczi | } |
616 | d2f2b8a7 | Stefan Hajnoczi | |
617 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
618 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
619 | 94a8d39a | Jan Kiszka | { |
620 | 94a8d39a | Jan Kiszka | while (list->name) {
|
621 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
622 | 94a8d39a | Jan Kiszka | return list;
|
623 | 94a8d39a | Jan Kiszka | } |
624 | 94a8d39a | Jan Kiszka | list++; |
625 | 94a8d39a | Jan Kiszka | } |
626 | 94a8d39a | Jan Kiszka | return NULL; |
627 | 94a8d39a | Jan Kiszka | } |
628 | 94a8d39a | Jan Kiszka | |
629 | a01672d3 | Avi Kivity | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
630 | 46dbef6a | Michael S. Tsirkin | { |
631 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
632 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
633 | 46dbef6a | Michael S. Tsirkin | int err;
|
634 | a01672d3 | Avi Kivity | MemoryRegion *mr = section->mr; |
635 | a01672d3 | Avi Kivity | bool log_dirty = memory_region_is_logging(mr);
|
636 | 235e8982 | Jordan Justen | bool writeable = !mr->readonly && !mr->rom_device;
|
637 | 235e8982 | Jordan Justen | bool readonly_flag = mr->readonly || memory_region_is_romd(mr);
|
638 | a8170e5e | Avi Kivity | hwaddr start_addr = section->offset_within_address_space; |
639 | 052e87b0 | Paolo Bonzini | ram_addr_t size = int128_get64(section->size); |
640 | 9f213ed9 | Avi Kivity | void *ram = NULL; |
641 | 8f6f962b | Avi Kivity | unsigned delta;
|
642 | 46dbef6a | Michael S. Tsirkin | |
643 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
644 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
645 | 8f6f962b | Avi Kivity | delta = TARGET_PAGE_ALIGN(size) - size; |
646 | 8f6f962b | Avi Kivity | if (delta > size) {
|
647 | 8f6f962b | Avi Kivity | return;
|
648 | 8f6f962b | Avi Kivity | } |
649 | 8f6f962b | Avi Kivity | start_addr += delta; |
650 | 8f6f962b | Avi Kivity | size -= delta; |
651 | 8f6f962b | Avi Kivity | size &= TARGET_PAGE_MASK; |
652 | 8f6f962b | Avi Kivity | if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
|
653 | 8f6f962b | Avi Kivity | return;
|
654 | 8f6f962b | Avi Kivity | } |
655 | 46dbef6a | Michael S. Tsirkin | |
656 | a01672d3 | Avi Kivity | if (!memory_region_is_ram(mr)) {
|
657 | 235e8982 | Jordan Justen | if (writeable || !kvm_readonly_mem_allowed) {
|
658 | 235e8982 | Jordan Justen | return;
|
659 | 235e8982 | Jordan Justen | } else if (!mr->romd_mode) { |
660 | 235e8982 | Jordan Justen | /* If the memory device is not in romd_mode, then we actually want
|
661 | 235e8982 | Jordan Justen | * to remove the kvm memory slot so all accesses will trap. */
|
662 | 235e8982 | Jordan Justen | add = false;
|
663 | 235e8982 | Jordan Justen | } |
664 | 9f213ed9 | Avi Kivity | } |
665 | 9f213ed9 | Avi Kivity | |
666 | 8f6f962b | Avi Kivity | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
667 | a01672d3 | Avi Kivity | |
668 | 46dbef6a | Michael S. Tsirkin | while (1) { |
669 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
670 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
671 | 46dbef6a | Michael S. Tsirkin | break;
|
672 | 46dbef6a | Michael S. Tsirkin | } |
673 | 46dbef6a | Michael S. Tsirkin | |
674 | a01672d3 | Avi Kivity | if (add && start_addr >= mem->start_addr &&
|
675 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
676 | 9f213ed9 | Avi Kivity | (ram - start_addr == mem->ram - mem->start_addr)) { |
677 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
678 | 25254bbc | Michael S. Tsirkin | * identical parameters - update flags and done. */
|
679 | 25254bbc | Michael S. Tsirkin | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
680 | 46dbef6a | Michael S. Tsirkin | return;
|
681 | 46dbef6a | Michael S. Tsirkin | } |
682 | 46dbef6a | Michael S. Tsirkin | |
683 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
684 | 46dbef6a | Michael S. Tsirkin | |
685 | 3fbffb62 | Avi Kivity | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
|
686 | 3fbffb62 | Avi Kivity | kvm_physical_sync_dirty_bitmap(section); |
687 | 3fbffb62 | Avi Kivity | } |
688 | 3fbffb62 | Avi Kivity | |
689 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
690 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
691 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
692 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
693 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
694 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
695 | 46dbef6a | Michael S. Tsirkin | abort(); |
696 | 46dbef6a | Michael S. Tsirkin | } |
697 | 46dbef6a | Michael S. Tsirkin | |
698 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
699 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
700 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
701 | 46dbef6a | Michael S. Tsirkin | *
|
702 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
703 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
704 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
705 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
706 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
707 | a01672d3 | Avi Kivity | old.start_addr == start_addr && old.memory_size < size && add) { |
708 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
709 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
710 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
711 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
712 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
713 | 46dbef6a | Michael S. Tsirkin | |
714 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
715 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
716 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
717 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
718 | 46dbef6a | Michael S. Tsirkin | abort(); |
719 | 46dbef6a | Michael S. Tsirkin | } |
720 | 46dbef6a | Michael S. Tsirkin | |
721 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
722 | 9f213ed9 | Avi Kivity | ram += old.memory_size; |
723 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
724 | 46dbef6a | Michael S. Tsirkin | continue;
|
725 | 46dbef6a | Michael S. Tsirkin | } |
726 | 46dbef6a | Michael S. Tsirkin | |
727 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
728 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
729 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
730 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
731 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
732 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
733 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
734 | 46dbef6a | Michael S. Tsirkin | |
735 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
736 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
737 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
738 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
739 | d4d6868f | Alexander Graf | #ifdef TARGET_PPC
|
740 | d4d6868f | Alexander Graf | fprintf(stderr, "%s: This is probably because your kernel's " \
|
741 | d4d6868f | Alexander Graf | "PAGE_SIZE is too big. Please try to use 4k " \
|
742 | d4d6868f | Alexander Graf | "PAGE_SIZE!\n", __func__);
|
743 | d4d6868f | Alexander Graf | #endif
|
744 | 46dbef6a | Michael S. Tsirkin | abort(); |
745 | 46dbef6a | Michael S. Tsirkin | } |
746 | 46dbef6a | Michael S. Tsirkin | } |
747 | 46dbef6a | Michael S. Tsirkin | |
748 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
749 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
750 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
751 | 46dbef6a | Michael S. Tsirkin | |
752 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
753 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
754 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
755 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
756 | 9f213ed9 | Avi Kivity | mem->ram = old.ram + size_delta; |
757 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
758 | 46dbef6a | Michael S. Tsirkin | |
759 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
760 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
761 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
762 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
763 | 46dbef6a | Michael S. Tsirkin | abort(); |
764 | 46dbef6a | Michael S. Tsirkin | } |
765 | 46dbef6a | Michael S. Tsirkin | } |
766 | 46dbef6a | Michael S. Tsirkin | } |
767 | 46dbef6a | Michael S. Tsirkin | |
768 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
769 | a426e122 | Jan Kiszka | if (!size) {
|
770 | 46dbef6a | Michael S. Tsirkin | return;
|
771 | a426e122 | Jan Kiszka | } |
772 | a01672d3 | Avi Kivity | if (!add) {
|
773 | 46dbef6a | Michael S. Tsirkin | return;
|
774 | a426e122 | Jan Kiszka | } |
775 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
776 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
777 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
778 | 9f213ed9 | Avi Kivity | mem->ram = ram; |
779 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
780 | 46dbef6a | Michael S. Tsirkin | |
781 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
782 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
783 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
784 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
785 | 46dbef6a | Michael S. Tsirkin | abort(); |
786 | 46dbef6a | Michael S. Tsirkin | } |
787 | 46dbef6a | Michael S. Tsirkin | } |
788 | 46dbef6a | Michael S. Tsirkin | |
789 | a01672d3 | Avi Kivity | static void kvm_region_add(MemoryListener *listener, |
790 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
791 | a01672d3 | Avi Kivity | { |
792 | dfde4e6e | Paolo Bonzini | memory_region_ref(section->mr); |
793 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, true);
|
794 | a01672d3 | Avi Kivity | } |
795 | a01672d3 | Avi Kivity | |
796 | a01672d3 | Avi Kivity | static void kvm_region_del(MemoryListener *listener, |
797 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
798 | a01672d3 | Avi Kivity | { |
799 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, false);
|
800 | dfde4e6e | Paolo Bonzini | memory_region_unref(section->mr); |
801 | a01672d3 | Avi Kivity | } |
802 | a01672d3 | Avi Kivity | |
803 | a01672d3 | Avi Kivity | static void kvm_log_sync(MemoryListener *listener, |
804 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
805 | 7b8f3b78 | Michael S. Tsirkin | { |
806 | a01672d3 | Avi Kivity | int r;
|
807 | a01672d3 | Avi Kivity | |
808 | ffcde12f | Avi Kivity | r = kvm_physical_sync_dirty_bitmap(section); |
809 | a01672d3 | Avi Kivity | if (r < 0) { |
810 | a01672d3 | Avi Kivity | abort(); |
811 | a01672d3 | Avi Kivity | } |
812 | 7b8f3b78 | Michael S. Tsirkin | } |
813 | 7b8f3b78 | Michael S. Tsirkin | |
814 | a01672d3 | Avi Kivity | static void kvm_log_global_start(struct MemoryListener *listener) |
815 | 7b8f3b78 | Michael S. Tsirkin | { |
816 | a01672d3 | Avi Kivity | int r;
|
817 | a01672d3 | Avi Kivity | |
818 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(1);
|
819 | a01672d3 | Avi Kivity | assert(r >= 0);
|
820 | 7b8f3b78 | Michael S. Tsirkin | } |
821 | 7b8f3b78 | Michael S. Tsirkin | |
822 | a01672d3 | Avi Kivity | static void kvm_log_global_stop(struct MemoryListener *listener) |
823 | 7b8f3b78 | Michael S. Tsirkin | { |
824 | a01672d3 | Avi Kivity | int r;
|
825 | a01672d3 | Avi Kivity | |
826 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(0);
|
827 | a01672d3 | Avi Kivity | assert(r >= 0);
|
828 | 7b8f3b78 | Michael S. Tsirkin | } |
829 | 7b8f3b78 | Michael S. Tsirkin | |
830 | d22b096e | Avi Kivity | static void kvm_mem_ioeventfd_add(MemoryListener *listener, |
831 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
832 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
833 | d22b096e | Avi Kivity | EventNotifier *e) |
834 | d22b096e | Avi Kivity | { |
835 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
836 | 80a1ea37 | Avi Kivity | int r;
|
837 | 80a1ea37 | Avi Kivity | |
838 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
839 | 052e87b0 | Paolo Bonzini | data, true, int128_get64(section->size),
|
840 | 052e87b0 | Paolo Bonzini | match_data); |
841 | 80a1ea37 | Avi Kivity | if (r < 0) { |
842 | fa4ba923 | Amos Kong | fprintf(stderr, "%s: error adding ioeventfd: %s\n",
|
843 | fa4ba923 | Amos Kong | __func__, strerror(-r)); |
844 | 80a1ea37 | Avi Kivity | abort(); |
845 | 80a1ea37 | Avi Kivity | } |
846 | 80a1ea37 | Avi Kivity | } |
847 | 80a1ea37 | Avi Kivity | |
848 | d22b096e | Avi Kivity | static void kvm_mem_ioeventfd_del(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 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
857 | 052e87b0 | Paolo Bonzini | data, false, int128_get64(section->size),
|
858 | 052e87b0 | Paolo Bonzini | match_data); |
859 | 80a1ea37 | Avi Kivity | if (r < 0) { |
860 | 80a1ea37 | Avi Kivity | abort(); |
861 | 80a1ea37 | Avi Kivity | } |
862 | 80a1ea37 | Avi Kivity | } |
863 | 80a1ea37 | Avi Kivity | |
864 | d22b096e | Avi Kivity | static void kvm_io_ioeventfd_add(MemoryListener *listener, |
865 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
866 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
867 | d22b096e | Avi Kivity | EventNotifier *e) |
868 | 80a1ea37 | Avi Kivity | { |
869 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
870 | 80a1ea37 | Avi Kivity | int r;
|
871 | 80a1ea37 | Avi Kivity | |
872 | 44c3f8f7 | Michael S. Tsirkin | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
873 | 052e87b0 | Paolo Bonzini | data, true, int128_get64(section->size),
|
874 | 052e87b0 | Paolo Bonzini | match_data); |
875 | 80a1ea37 | Avi Kivity | if (r < 0) { |
876 | fa4ba923 | Amos Kong | fprintf(stderr, "%s: error adding ioeventfd: %s\n",
|
877 | fa4ba923 | Amos Kong | __func__, strerror(-r)); |
878 | 80a1ea37 | Avi Kivity | abort(); |
879 | 80a1ea37 | Avi Kivity | } |
880 | 80a1ea37 | Avi Kivity | } |
881 | 80a1ea37 | Avi Kivity | |
882 | d22b096e | Avi Kivity | static void kvm_io_ioeventfd_del(MemoryListener *listener, |
883 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
884 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
885 | d22b096e | Avi Kivity | EventNotifier *e) |
886 | 80a1ea37 | Avi Kivity | |
887 | 80a1ea37 | Avi Kivity | { |
888 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
889 | 80a1ea37 | Avi Kivity | int r;
|
890 | 80a1ea37 | Avi Kivity | |
891 | 44c3f8f7 | Michael S. Tsirkin | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
892 | 052e87b0 | Paolo Bonzini | data, false, int128_get64(section->size),
|
893 | 052e87b0 | Paolo Bonzini | match_data); |
894 | 80a1ea37 | Avi Kivity | if (r < 0) { |
895 | 80a1ea37 | Avi Kivity | abort(); |
896 | 80a1ea37 | Avi Kivity | } |
897 | 80a1ea37 | Avi Kivity | } |
898 | 80a1ea37 | Avi Kivity | |
899 | a01672d3 | Avi Kivity | static MemoryListener kvm_memory_listener = {
|
900 | a01672d3 | Avi Kivity | .region_add = kvm_region_add, |
901 | a01672d3 | Avi Kivity | .region_del = kvm_region_del, |
902 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
903 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
904 | a01672d3 | Avi Kivity | .log_sync = kvm_log_sync, |
905 | a01672d3 | Avi Kivity | .log_global_start = kvm_log_global_start, |
906 | a01672d3 | Avi Kivity | .log_global_stop = kvm_log_global_stop, |
907 | d22b096e | Avi Kivity | .eventfd_add = kvm_mem_ioeventfd_add, |
908 | d22b096e | Avi Kivity | .eventfd_del = kvm_mem_ioeventfd_del, |
909 | 95d2994a | Avi Kivity | .coalesced_mmio_add = kvm_coalesce_mmio_region, |
910 | 95d2994a | Avi Kivity | .coalesced_mmio_del = kvm_uncoalesce_mmio_region, |
911 | d22b096e | Avi Kivity | .priority = 10,
|
912 | d22b096e | Avi Kivity | }; |
913 | d22b096e | Avi Kivity | |
914 | d22b096e | Avi Kivity | static MemoryListener kvm_io_listener = {
|
915 | d22b096e | Avi Kivity | .eventfd_add = kvm_io_ioeventfd_add, |
916 | d22b096e | Avi Kivity | .eventfd_del = kvm_io_ioeventfd_del, |
917 | 72e22d2f | Avi Kivity | .priority = 10,
|
918 | 7b8f3b78 | Michael S. Tsirkin | }; |
919 | 7b8f3b78 | Michael S. Tsirkin | |
920 | c3affe56 | Andreas Färber | static void kvm_handle_interrupt(CPUState *cpu, int mask) |
921 | aa7f74d1 | Jan Kiszka | { |
922 | 259186a7 | Andreas Färber | cpu->interrupt_request |= mask; |
923 | aa7f74d1 | Jan Kiszka | |
924 | 60e82579 | Andreas Färber | if (!qemu_cpu_is_self(cpu)) {
|
925 | c08d7424 | Andreas Färber | qemu_cpu_kick(cpu); |
926 | aa7f74d1 | Jan Kiszka | } |
927 | aa7f74d1 | Jan Kiszka | } |
928 | aa7f74d1 | Jan Kiszka | |
929 | 3889c3fa | Peter Maydell | int kvm_set_irq(KVMState *s, int irq, int level) |
930 | 84b058d7 | Jan Kiszka | { |
931 | 84b058d7 | Jan Kiszka | struct kvm_irq_level event;
|
932 | 84b058d7 | Jan Kiszka | int ret;
|
933 | 84b058d7 | Jan Kiszka | |
934 | 7ae26bd4 | Peter Maydell | assert(kvm_async_interrupts_enabled()); |
935 | 84b058d7 | Jan Kiszka | |
936 | 84b058d7 | Jan Kiszka | event.level = level; |
937 | 84b058d7 | Jan Kiszka | event.irq = irq; |
938 | e333cd69 | Jan Kiszka | ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event); |
939 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
940 | 3889c3fa | Peter Maydell | perror("kvm_set_irq");
|
941 | 84b058d7 | Jan Kiszka | abort(); |
942 | 84b058d7 | Jan Kiszka | } |
943 | 84b058d7 | Jan Kiszka | |
944 | e333cd69 | Jan Kiszka | return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
945 | 84b058d7 | Jan Kiszka | } |
946 | 84b058d7 | Jan Kiszka | |
947 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
948 | d3d3bef0 | Jan Kiszka | typedef struct KVMMSIRoute { |
949 | d3d3bef0 | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
950 | d3d3bef0 | Jan Kiszka | QTAILQ_ENTRY(KVMMSIRoute) entry; |
951 | d3d3bef0 | Jan Kiszka | } KVMMSIRoute; |
952 | d3d3bef0 | Jan Kiszka | |
953 | 84b058d7 | Jan Kiszka | static void set_gsi(KVMState *s, unsigned int gsi) |
954 | 84b058d7 | Jan Kiszka | { |
955 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
956 | 84b058d7 | Jan Kiszka | } |
957 | 84b058d7 | Jan Kiszka | |
958 | 04fa27f5 | Jan Kiszka | static void clear_gsi(KVMState *s, unsigned int gsi) |
959 | 04fa27f5 | Jan Kiszka | { |
960 | 04fa27f5 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32)); |
961 | 04fa27f5 | Jan Kiszka | } |
962 | 04fa27f5 | Jan Kiszka | |
963 | 7b774593 | Alexander Graf | void kvm_init_irq_routing(KVMState *s)
|
964 | 84b058d7 | Jan Kiszka | { |
965 | 04fa27f5 | Jan Kiszka | int gsi_count, i;
|
966 | 84b058d7 | Jan Kiszka | |
967 | 84b058d7 | Jan Kiszka | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
968 | 84b058d7 | Jan Kiszka | if (gsi_count > 0) { |
969 | 84b058d7 | Jan Kiszka | unsigned int gsi_bits, i; |
970 | 84b058d7 | Jan Kiszka | |
971 | 84b058d7 | Jan Kiszka | /* Round up so we can search ints using ffs */
|
972 | bc8c6788 | Jason Baron | gsi_bits = ALIGN(gsi_count, 32);
|
973 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
|
974 | 4e2e4e63 | Jan Kiszka | s->gsi_count = gsi_count; |
975 | 84b058d7 | Jan Kiszka | |
976 | 84b058d7 | Jan Kiszka | /* Mark any over-allocated bits as already in use */
|
977 | 84b058d7 | Jan Kiszka | for (i = gsi_count; i < gsi_bits; i++) {
|
978 | 84b058d7 | Jan Kiszka | set_gsi(s, i); |
979 | 84b058d7 | Jan Kiszka | } |
980 | 84b058d7 | Jan Kiszka | } |
981 | 84b058d7 | Jan Kiszka | |
982 | 84b058d7 | Jan Kiszka | s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
|
983 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = 0;
|
984 | 84b058d7 | Jan Kiszka | |
985 | 4a3adebb | Jan Kiszka | if (!s->direct_msi) {
|
986 | 4a3adebb | Jan Kiszka | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { |
987 | 4a3adebb | Jan Kiszka | QTAILQ_INIT(&s->msi_hashtab[i]); |
988 | 4a3adebb | Jan Kiszka | } |
989 | 04fa27f5 | Jan Kiszka | } |
990 | 04fa27f5 | Jan Kiszka | |
991 | 84b058d7 | Jan Kiszka | kvm_arch_init_irq_routing(s); |
992 | 84b058d7 | Jan Kiszka | } |
993 | 84b058d7 | Jan Kiszka | |
994 | cb925cf9 | Alexander Graf | void kvm_irqchip_commit_routes(KVMState *s)
|
995 | e7b20308 | Jan Kiszka | { |
996 | e7b20308 | Jan Kiszka | int ret;
|
997 | e7b20308 | Jan Kiszka | |
998 | e7b20308 | Jan Kiszka | s->irq_routes->flags = 0;
|
999 | e7b20308 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); |
1000 | e7b20308 | Jan Kiszka | assert(ret == 0);
|
1001 | e7b20308 | Jan Kiszka | } |
1002 | e7b20308 | Jan Kiszka | |
1003 | 84b058d7 | Jan Kiszka | static void kvm_add_routing_entry(KVMState *s, |
1004 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *entry)
|
1005 | 84b058d7 | Jan Kiszka | { |
1006 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *new;
|
1007 | 84b058d7 | Jan Kiszka | int n, size;
|
1008 | 84b058d7 | Jan Kiszka | |
1009 | 84b058d7 | Jan Kiszka | if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
|
1010 | 84b058d7 | Jan Kiszka | n = s->nr_allocated_irq_routes * 2;
|
1011 | 84b058d7 | Jan Kiszka | if (n < 64) { |
1012 | 84b058d7 | Jan Kiszka | n = 64;
|
1013 | 84b058d7 | Jan Kiszka | } |
1014 | 84b058d7 | Jan Kiszka | size = sizeof(struct kvm_irq_routing); |
1015 | 84b058d7 | Jan Kiszka | size += n * sizeof(*new);
|
1016 | 84b058d7 | Jan Kiszka | s->irq_routes = g_realloc(s->irq_routes, size); |
1017 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = n; |
1018 | 84b058d7 | Jan Kiszka | } |
1019 | 84b058d7 | Jan Kiszka | n = s->irq_routes->nr++; |
1020 | 84b058d7 | Jan Kiszka | new = &s->irq_routes->entries[n]; |
1021 | 0fbc2074 | Michael S. Tsirkin | |
1022 | 0fbc2074 | Michael S. Tsirkin | *new = *entry; |
1023 | 84b058d7 | Jan Kiszka | |
1024 | 84b058d7 | Jan Kiszka | set_gsi(s, entry->gsi); |
1025 | 84b058d7 | Jan Kiszka | } |
1026 | 84b058d7 | Jan Kiszka | |
1027 | cc57407e | Jan Kiszka | static int kvm_update_routing_entry(KVMState *s, |
1028 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *new_entry)
|
1029 | cc57407e | Jan Kiszka | { |
1030 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *entry;
|
1031 | cc57407e | Jan Kiszka | int n;
|
1032 | cc57407e | Jan Kiszka | |
1033 | cc57407e | Jan Kiszka | for (n = 0; n < s->irq_routes->nr; n++) { |
1034 | cc57407e | Jan Kiszka | entry = &s->irq_routes->entries[n]; |
1035 | cc57407e | Jan Kiszka | if (entry->gsi != new_entry->gsi) {
|
1036 | cc57407e | Jan Kiszka | continue;
|
1037 | cc57407e | Jan Kiszka | } |
1038 | cc57407e | Jan Kiszka | |
1039 | 40509f7f | Michael S. Tsirkin | if(!memcmp(entry, new_entry, sizeof *entry)) { |
1040 | 40509f7f | Michael S. Tsirkin | return 0; |
1041 | 40509f7f | Michael S. Tsirkin | } |
1042 | 40509f7f | Michael S. Tsirkin | |
1043 | 0fbc2074 | Michael S. Tsirkin | *entry = *new_entry; |
1044 | cc57407e | Jan Kiszka | |
1045 | cc57407e | Jan Kiszka | kvm_irqchip_commit_routes(s); |
1046 | cc57407e | Jan Kiszka | |
1047 | cc57407e | Jan Kiszka | return 0; |
1048 | cc57407e | Jan Kiszka | } |
1049 | cc57407e | Jan Kiszka | |
1050 | cc57407e | Jan Kiszka | return -ESRCH;
|
1051 | cc57407e | Jan Kiszka | } |
1052 | cc57407e | Jan Kiszka | |
1053 | 1df186df | Jan Kiszka | void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin) |
1054 | 84b058d7 | Jan Kiszka | { |
1055 | 0fbc2074 | Michael S. Tsirkin | struct kvm_irq_routing_entry e = {};
|
1056 | 84b058d7 | Jan Kiszka | |
1057 | 4e2e4e63 | Jan Kiszka | assert(pin < s->gsi_count); |
1058 | 4e2e4e63 | Jan Kiszka | |
1059 | 84b058d7 | Jan Kiszka | e.gsi = irq; |
1060 | 84b058d7 | Jan Kiszka | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
1061 | 84b058d7 | Jan Kiszka | e.flags = 0;
|
1062 | 84b058d7 | Jan Kiszka | e.u.irqchip.irqchip = irqchip; |
1063 | 84b058d7 | Jan Kiszka | e.u.irqchip.pin = pin; |
1064 | 84b058d7 | Jan Kiszka | kvm_add_routing_entry(s, &e); |
1065 | 84b058d7 | Jan Kiszka | } |
1066 | 84b058d7 | Jan Kiszka | |
1067 | 1e2aa8be | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1068 | 04fa27f5 | Jan Kiszka | { |
1069 | 04fa27f5 | Jan Kiszka | struct kvm_irq_routing_entry *e;
|
1070 | 04fa27f5 | Jan Kiszka | int i;
|
1071 | 04fa27f5 | Jan Kiszka | |
1072 | 04fa27f5 | Jan Kiszka | for (i = 0; i < s->irq_routes->nr; i++) { |
1073 | 04fa27f5 | Jan Kiszka | e = &s->irq_routes->entries[i]; |
1074 | 04fa27f5 | Jan Kiszka | if (e->gsi == virq) {
|
1075 | 04fa27f5 | Jan Kiszka | s->irq_routes->nr--; |
1076 | 04fa27f5 | Jan Kiszka | *e = s->irq_routes->entries[s->irq_routes->nr]; |
1077 | 04fa27f5 | Jan Kiszka | } |
1078 | 04fa27f5 | Jan Kiszka | } |
1079 | 04fa27f5 | Jan Kiszka | clear_gsi(s, virq); |
1080 | 04fa27f5 | Jan Kiszka | } |
1081 | 04fa27f5 | Jan Kiszka | |
1082 | 04fa27f5 | Jan Kiszka | static unsigned int kvm_hash_msi(uint32_t data) |
1083 | 04fa27f5 | Jan Kiszka | { |
1084 | 04fa27f5 | Jan Kiszka | /* This is optimized for IA32 MSI layout. However, no other arch shall
|
1085 | 04fa27f5 | Jan Kiszka | * repeat the mistake of not providing a direct MSI injection API. */
|
1086 | 04fa27f5 | Jan Kiszka | return data & 0xff; |
1087 | 04fa27f5 | Jan Kiszka | } |
1088 | 04fa27f5 | Jan Kiszka | |
1089 | 04fa27f5 | Jan Kiszka | static void kvm_flush_dynamic_msi_routes(KVMState *s) |
1090 | 04fa27f5 | Jan Kiszka | { |
1091 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route, *next; |
1092 | 04fa27f5 | Jan Kiszka | unsigned int hash; |
1093 | 04fa27f5 | Jan Kiszka | |
1094 | 04fa27f5 | Jan Kiszka | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { |
1095 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { |
1096 | 04fa27f5 | Jan Kiszka | kvm_irqchip_release_virq(s, route->kroute.gsi); |
1097 | 04fa27f5 | Jan Kiszka | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); |
1098 | 04fa27f5 | Jan Kiszka | g_free(route); |
1099 | 04fa27f5 | Jan Kiszka | } |
1100 | 04fa27f5 | Jan Kiszka | } |
1101 | 04fa27f5 | Jan Kiszka | } |
1102 | 04fa27f5 | Jan Kiszka | |
1103 | 04fa27f5 | Jan Kiszka | static int kvm_irqchip_get_virq(KVMState *s) |
1104 | 04fa27f5 | Jan Kiszka | { |
1105 | 04fa27f5 | Jan Kiszka | uint32_t *word = s->used_gsi_bitmap; |
1106 | 04fa27f5 | Jan Kiszka | int max_words = ALIGN(s->gsi_count, 32) / 32; |
1107 | 04fa27f5 | Jan Kiszka | int i, bit;
|
1108 | 04fa27f5 | Jan Kiszka | bool retry = true; |
1109 | 04fa27f5 | Jan Kiszka | |
1110 | 04fa27f5 | Jan Kiszka | again:
|
1111 | 04fa27f5 | Jan Kiszka | /* Return the lowest unused GSI in the bitmap */
|
1112 | 04fa27f5 | Jan Kiszka | for (i = 0; i < max_words; i++) { |
1113 | 04fa27f5 | Jan Kiszka | bit = ffs(~word[i]); |
1114 | 04fa27f5 | Jan Kiszka | if (!bit) {
|
1115 | 04fa27f5 | Jan Kiszka | continue;
|
1116 | 04fa27f5 | Jan Kiszka | } |
1117 | 04fa27f5 | Jan Kiszka | |
1118 | 04fa27f5 | Jan Kiszka | return bit - 1 + i * 32; |
1119 | 04fa27f5 | Jan Kiszka | } |
1120 | 4a3adebb | Jan Kiszka | if (!s->direct_msi && retry) {
|
1121 | 04fa27f5 | Jan Kiszka | retry = false;
|
1122 | 04fa27f5 | Jan Kiszka | kvm_flush_dynamic_msi_routes(s); |
1123 | 04fa27f5 | Jan Kiszka | goto again;
|
1124 | 04fa27f5 | Jan Kiszka | } |
1125 | 04fa27f5 | Jan Kiszka | return -ENOSPC;
|
1126 | 04fa27f5 | Jan Kiszka | |
1127 | 04fa27f5 | Jan Kiszka | } |
1128 | 04fa27f5 | Jan Kiszka | |
1129 | 04fa27f5 | Jan Kiszka | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg)
|
1130 | 04fa27f5 | Jan Kiszka | { |
1131 | 04fa27f5 | Jan Kiszka | unsigned int hash = kvm_hash_msi(msg.data); |
1132 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1133 | 04fa27f5 | Jan Kiszka | |
1134 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { |
1135 | 04fa27f5 | Jan Kiszka | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address &&
|
1136 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi == (msg.address >> 32) &&
|
1137 | d07cc1f1 | Alexander Graf | route->kroute.u.msi.data == le32_to_cpu(msg.data)) { |
1138 | 04fa27f5 | Jan Kiszka | return route;
|
1139 | 04fa27f5 | Jan Kiszka | } |
1140 | 04fa27f5 | Jan Kiszka | } |
1141 | 04fa27f5 | Jan Kiszka | return NULL; |
1142 | 04fa27f5 | Jan Kiszka | } |
1143 | 04fa27f5 | Jan Kiszka | |
1144 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1145 | 04fa27f5 | Jan Kiszka | { |
1146 | 4a3adebb | Jan Kiszka | struct kvm_msi msi;
|
1147 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1148 | 04fa27f5 | Jan Kiszka | |
1149 | 4a3adebb | Jan Kiszka | if (s->direct_msi) {
|
1150 | 4a3adebb | Jan Kiszka | msi.address_lo = (uint32_t)msg.address; |
1151 | 4a3adebb | Jan Kiszka | msi.address_hi = msg.address >> 32;
|
1152 | d07cc1f1 | Alexander Graf | msi.data = le32_to_cpu(msg.data); |
1153 | 4a3adebb | Jan Kiszka | msi.flags = 0;
|
1154 | 4a3adebb | Jan Kiszka | memset(msi.pad, 0, sizeof(msi.pad)); |
1155 | 4a3adebb | Jan Kiszka | |
1156 | 4a3adebb | Jan Kiszka | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi);
|
1157 | 4a3adebb | Jan Kiszka | } |
1158 | 4a3adebb | Jan Kiszka | |
1159 | 04fa27f5 | Jan Kiszka | route = kvm_lookup_msi_route(s, msg); |
1160 | 04fa27f5 | Jan Kiszka | if (!route) {
|
1161 | e7b20308 | Jan Kiszka | int virq;
|
1162 | 04fa27f5 | Jan Kiszka | |
1163 | 04fa27f5 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1164 | 04fa27f5 | Jan Kiszka | if (virq < 0) { |
1165 | 04fa27f5 | Jan Kiszka | return virq;
|
1166 | 04fa27f5 | Jan Kiszka | } |
1167 | 04fa27f5 | Jan Kiszka | |
1168 | 0fbc2074 | Michael S. Tsirkin | route = g_malloc0(sizeof(KVMMSIRoute));
|
1169 | 04fa27f5 | Jan Kiszka | route->kroute.gsi = virq; |
1170 | 04fa27f5 | Jan Kiszka | route->kroute.type = KVM_IRQ_ROUTING_MSI; |
1171 | 04fa27f5 | Jan Kiszka | route->kroute.flags = 0;
|
1172 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_lo = (uint32_t)msg.address; |
1173 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi = msg.address >> 32;
|
1174 | d07cc1f1 | Alexander Graf | route->kroute.u.msi.data = le32_to_cpu(msg.data); |
1175 | 04fa27f5 | Jan Kiszka | |
1176 | 04fa27f5 | Jan Kiszka | kvm_add_routing_entry(s, &route->kroute); |
1177 | cb925cf9 | Alexander Graf | kvm_irqchip_commit_routes(s); |
1178 | 04fa27f5 | Jan Kiszka | |
1179 | 04fa27f5 | Jan Kiszka | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, |
1180 | 04fa27f5 | Jan Kiszka | entry); |
1181 | 04fa27f5 | Jan Kiszka | } |
1182 | 04fa27f5 | Jan Kiszka | |
1183 | 04fa27f5 | Jan Kiszka | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); |
1184 | 04fa27f5 | Jan Kiszka | |
1185 | 3889c3fa | Peter Maydell | return kvm_set_irq(s, route->kroute.gsi, 1); |
1186 | 04fa27f5 | Jan Kiszka | } |
1187 | 04fa27f5 | Jan Kiszka | |
1188 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1189 | 92b4e489 | Jan Kiszka | { |
1190 | 0fbc2074 | Michael S. Tsirkin | struct kvm_irq_routing_entry kroute = {};
|
1191 | 92b4e489 | Jan Kiszka | int virq;
|
1192 | 92b4e489 | Jan Kiszka | |
1193 | f3e1bed8 | Peter Maydell | if (!kvm_gsi_routing_enabled()) {
|
1194 | 92b4e489 | Jan Kiszka | return -ENOSYS;
|
1195 | 92b4e489 | Jan Kiszka | } |
1196 | 92b4e489 | Jan Kiszka | |
1197 | 92b4e489 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1198 | 92b4e489 | Jan Kiszka | if (virq < 0) { |
1199 | 92b4e489 | Jan Kiszka | return virq;
|
1200 | 92b4e489 | Jan Kiszka | } |
1201 | 92b4e489 | Jan Kiszka | |
1202 | 92b4e489 | Jan Kiszka | kroute.gsi = virq; |
1203 | 92b4e489 | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1204 | 92b4e489 | Jan Kiszka | kroute.flags = 0;
|
1205 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1206 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1207 | d07cc1f1 | Alexander Graf | kroute.u.msi.data = le32_to_cpu(msg.data); |
1208 | 92b4e489 | Jan Kiszka | |
1209 | 92b4e489 | Jan Kiszka | kvm_add_routing_entry(s, &kroute); |
1210 | cb925cf9 | Alexander Graf | kvm_irqchip_commit_routes(s); |
1211 | 92b4e489 | Jan Kiszka | |
1212 | 92b4e489 | Jan Kiszka | return virq;
|
1213 | 92b4e489 | Jan Kiszka | } |
1214 | 92b4e489 | Jan Kiszka | |
1215 | cc57407e | Jan Kiszka | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1216 | cc57407e | Jan Kiszka | { |
1217 | 0fbc2074 | Michael S. Tsirkin | struct kvm_irq_routing_entry kroute = {};
|
1218 | cc57407e | Jan Kiszka | |
1219 | cc57407e | Jan Kiszka | if (!kvm_irqchip_in_kernel()) {
|
1220 | cc57407e | Jan Kiszka | return -ENOSYS;
|
1221 | cc57407e | Jan Kiszka | } |
1222 | cc57407e | Jan Kiszka | |
1223 | cc57407e | Jan Kiszka | kroute.gsi = virq; |
1224 | cc57407e | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1225 | cc57407e | Jan Kiszka | kroute.flags = 0;
|
1226 | cc57407e | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1227 | cc57407e | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1228 | d07cc1f1 | Alexander Graf | kroute.u.msi.data = le32_to_cpu(msg.data); |
1229 | cc57407e | Jan Kiszka | |
1230 | cc57407e | Jan Kiszka | return kvm_update_routing_entry(s, &kroute);
|
1231 | cc57407e | Jan Kiszka | } |
1232 | cc57407e | Jan Kiszka | |
1233 | ca916d37 | Vincenzo Maffione | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int rfd, int virq, |
1234 | ca916d37 | Vincenzo Maffione | bool assign)
|
1235 | 39853bbc | Jan Kiszka | { |
1236 | 39853bbc | Jan Kiszka | struct kvm_irqfd irqfd = {
|
1237 | 39853bbc | Jan Kiszka | .fd = fd, |
1238 | 39853bbc | Jan Kiszka | .gsi = virq, |
1239 | 39853bbc | Jan Kiszka | .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN,
|
1240 | 39853bbc | Jan Kiszka | }; |
1241 | 39853bbc | Jan Kiszka | |
1242 | ca916d37 | Vincenzo Maffione | if (rfd != -1) { |
1243 | ca916d37 | Vincenzo Maffione | irqfd.flags |= KVM_IRQFD_FLAG_RESAMPLE; |
1244 | ca916d37 | Vincenzo Maffione | irqfd.resamplefd = rfd; |
1245 | ca916d37 | Vincenzo Maffione | } |
1246 | ca916d37 | Vincenzo Maffione | |
1247 | cc7e0ddf | Peter Maydell | if (!kvm_irqfds_enabled()) {
|
1248 | 39853bbc | Jan Kiszka | return -ENOSYS;
|
1249 | 39853bbc | Jan Kiszka | } |
1250 | 39853bbc | Jan Kiszka | |
1251 | 39853bbc | Jan Kiszka | return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd);
|
1252 | 39853bbc | Jan Kiszka | } |
1253 | 39853bbc | Jan Kiszka | |
1254 | 84b058d7 | Jan Kiszka | #else /* !KVM_CAP_IRQ_ROUTING */ |
1255 | 84b058d7 | Jan Kiszka | |
1256 | 7b774593 | Alexander Graf | void kvm_init_irq_routing(KVMState *s)
|
1257 | 84b058d7 | Jan Kiszka | { |
1258 | 84b058d7 | Jan Kiszka | } |
1259 | 04fa27f5 | Jan Kiszka | |
1260 | d3d3bef0 | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1261 | d3d3bef0 | Jan Kiszka | { |
1262 | d3d3bef0 | Jan Kiszka | } |
1263 | d3d3bef0 | Jan Kiszka | |
1264 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1265 | 04fa27f5 | Jan Kiszka | { |
1266 | 04fa27f5 | Jan Kiszka | abort(); |
1267 | 04fa27f5 | Jan Kiszka | } |
1268 | 92b4e489 | Jan Kiszka | |
1269 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1270 | 92b4e489 | Jan Kiszka | { |
1271 | df410675 | Alex Williamson | return -ENOSYS;
|
1272 | 92b4e489 | Jan Kiszka | } |
1273 | 39853bbc | Jan Kiszka | |
1274 | 39853bbc | Jan Kiszka | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1275 | 39853bbc | Jan Kiszka | { |
1276 | 39853bbc | Jan Kiszka | abort(); |
1277 | 39853bbc | Jan Kiszka | } |
1278 | dabe3143 | Michael S. Tsirkin | |
1279 | dabe3143 | Michael S. Tsirkin | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1280 | dabe3143 | Michael S. Tsirkin | { |
1281 | dabe3143 | Michael S. Tsirkin | return -ENOSYS;
|
1282 | dabe3143 | Michael S. Tsirkin | } |
1283 | 84b058d7 | Jan Kiszka | #endif /* !KVM_CAP_IRQ_ROUTING */ |
1284 | 84b058d7 | Jan Kiszka | |
1285 | ca916d37 | Vincenzo Maffione | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n,
|
1286 | ca916d37 | Vincenzo Maffione | EventNotifier *rn, int virq)
|
1287 | 39853bbc | Jan Kiszka | { |
1288 | ca916d37 | Vincenzo Maffione | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n),
|
1289 | ca916d37 | Vincenzo Maffione | rn ? event_notifier_get_fd(rn) : -1, virq, true); |
1290 | 39853bbc | Jan Kiszka | } |
1291 | 39853bbc | Jan Kiszka | |
1292 | b131c74a | Jan Kiszka | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
1293 | 15b2bd18 | Paolo Bonzini | { |
1294 | ca916d37 | Vincenzo Maffione | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), -1, virq, |
1295 | ca916d37 | Vincenzo Maffione | false);
|
1296 | 15b2bd18 | Paolo Bonzini | } |
1297 | 15b2bd18 | Paolo Bonzini | |
1298 | 84b058d7 | Jan Kiszka | static int kvm_irqchip_create(KVMState *s) |
1299 | 84b058d7 | Jan Kiszka | { |
1300 | 84b058d7 | Jan Kiszka | int ret;
|
1301 | 84b058d7 | Jan Kiszka | |
1302 | 36ad0e94 | Markus Armbruster | if (!qemu_opt_get_bool(qemu_get_machine_opts(), "kernel_irqchip", true) || |
1303 | 84b058d7 | Jan Kiszka | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
1304 | 84b058d7 | Jan Kiszka | return 0; |
1305 | 84b058d7 | Jan Kiszka | } |
1306 | 84b058d7 | Jan Kiszka | |
1307 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
1308 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1309 | 84b058d7 | Jan Kiszka | fprintf(stderr, "Create kernel irqchip failed\n");
|
1310 | 84b058d7 | Jan Kiszka | return ret;
|
1311 | 84b058d7 | Jan Kiszka | } |
1312 | 84b058d7 | Jan Kiszka | |
1313 | 3d4b2649 | Jan Kiszka | kvm_kernel_irqchip = true;
|
1314 | 7ae26bd4 | Peter Maydell | /* If we have an in-kernel IRQ chip then we must have asynchronous
|
1315 | 7ae26bd4 | Peter Maydell | * interrupt delivery (though the reverse is not necessarily true)
|
1316 | 7ae26bd4 | Peter Maydell | */
|
1317 | 7ae26bd4 | Peter Maydell | kvm_async_interrupts_allowed = true;
|
1318 | 215e79c0 | Alexander Graf | kvm_halt_in_kernel_allowed = true;
|
1319 | 84b058d7 | Jan Kiszka | |
1320 | 84b058d7 | Jan Kiszka | kvm_init_irq_routing(s); |
1321 | 84b058d7 | Jan Kiszka | |
1322 | 84b058d7 | Jan Kiszka | return 0; |
1323 | 84b058d7 | Jan Kiszka | } |
1324 | 84b058d7 | Jan Kiszka | |
1325 | 670436ce | Andrew Jones | /* Find number of supported CPUs using the recommended
|
1326 | 670436ce | Andrew Jones | * procedure from the kernel API documentation to cope with
|
1327 | 670436ce | Andrew Jones | * older kernels that may be missing capabilities.
|
1328 | 670436ce | Andrew Jones | */
|
1329 | 670436ce | Andrew Jones | static int kvm_recommended_vcpus(KVMState *s) |
1330 | 3ed444e9 | Dunrong Huang | { |
1331 | 670436ce | Andrew Jones | int ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS);
|
1332 | 670436ce | Andrew Jones | return (ret) ? ret : 4; |
1333 | 670436ce | Andrew Jones | } |
1334 | 3ed444e9 | Dunrong Huang | |
1335 | 670436ce | Andrew Jones | static int kvm_max_vcpus(KVMState *s) |
1336 | 670436ce | Andrew Jones | { |
1337 | 670436ce | Andrew Jones | int ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS);
|
1338 | 670436ce | Andrew Jones | return (ret) ? ret : kvm_recommended_vcpus(s);
|
1339 | 3ed444e9 | Dunrong Huang | } |
1340 | 3ed444e9 | Dunrong Huang | |
1341 | cad1e282 | Jan Kiszka | int kvm_init(void) |
1342 | 05330448 | aliguori | { |
1343 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
1344 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
1345 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
1346 | 670436ce | Andrew Jones | struct {
|
1347 | 670436ce | Andrew Jones | const char *name; |
1348 | 670436ce | Andrew Jones | int num;
|
1349 | 670436ce | Andrew Jones | } num_cpus[] = { |
1350 | 670436ce | Andrew Jones | { "SMP", smp_cpus },
|
1351 | 670436ce | Andrew Jones | { "hotpluggable", max_cpus },
|
1352 | 670436ce | Andrew Jones | { NULL, }
|
1353 | 670436ce | Andrew Jones | }, *nc = num_cpus; |
1354 | 670436ce | Andrew Jones | int soft_vcpus_limit, hard_vcpus_limit;
|
1355 | 05330448 | aliguori | KVMState *s; |
1356 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
1357 | 05330448 | aliguori | int ret;
|
1358 | 05330448 | aliguori | int i;
|
1359 | 05330448 | aliguori | |
1360 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(KVMState));
|
1361 | 05330448 | aliguori | |
1362 | 3145fcb6 | David Gibson | /*
|
1363 | 3145fcb6 | David Gibson | * On systems where the kernel can support different base page
|
1364 | 3145fcb6 | David Gibson | * sizes, host page size may be different from TARGET_PAGE_SIZE,
|
1365 | 3145fcb6 | David Gibson | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum
|
1366 | 3145fcb6 | David Gibson | * page size for the system though.
|
1367 | 3145fcb6 | David Gibson | */
|
1368 | 3145fcb6 | David Gibson | assert(TARGET_PAGE_SIZE <= getpagesize()); |
1369 | 3145fcb6 | David Gibson | |
1370 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1371 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
1372 | e22a25c9 | aliguori | #endif
|
1373 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
1374 | 05330448 | aliguori | s->slots[i].slot = i; |
1375 | a426e122 | Jan Kiszka | } |
1376 | 05330448 | aliguori | s->vmfd = -1;
|
1377 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
1378 | 05330448 | aliguori | if (s->fd == -1) { |
1379 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
1380 | 05330448 | aliguori | ret = -errno; |
1381 | 05330448 | aliguori | goto err;
|
1382 | 05330448 | aliguori | } |
1383 | 05330448 | aliguori | |
1384 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
1385 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
1386 | a426e122 | Jan Kiszka | if (ret > 0) { |
1387 | 05330448 | aliguori | ret = -EINVAL; |
1388 | a426e122 | Jan Kiszka | } |
1389 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
1390 | 05330448 | aliguori | goto err;
|
1391 | 05330448 | aliguori | } |
1392 | 05330448 | aliguori | |
1393 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
1394 | 05330448 | aliguori | ret = -EINVAL; |
1395 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
1396 | 05330448 | aliguori | goto err;
|
1397 | 05330448 | aliguori | } |
1398 | 05330448 | aliguori | |
1399 | 670436ce | Andrew Jones | /* check the vcpu limits */
|
1400 | 670436ce | Andrew Jones | soft_vcpus_limit = kvm_recommended_vcpus(s); |
1401 | 670436ce | Andrew Jones | hard_vcpus_limit = kvm_max_vcpus(s); |
1402 | 3ed444e9 | Dunrong Huang | |
1403 | 670436ce | Andrew Jones | while (nc->name) {
|
1404 | 670436ce | Andrew Jones | if (nc->num > soft_vcpus_limit) {
|
1405 | 670436ce | Andrew Jones | fprintf(stderr, |
1406 | 670436ce | Andrew Jones | "Warning: Number of %s cpus requested (%d) exceeds "
|
1407 | 670436ce | Andrew Jones | "the recommended cpus supported by KVM (%d)\n",
|
1408 | 670436ce | Andrew Jones | nc->name, nc->num, soft_vcpus_limit); |
1409 | 670436ce | Andrew Jones | |
1410 | 670436ce | Andrew Jones | if (nc->num > hard_vcpus_limit) {
|
1411 | 670436ce | Andrew Jones | ret = -EINVAL; |
1412 | 670436ce | Andrew Jones | fprintf(stderr, "Number of %s cpus requested (%d) exceeds "
|
1413 | 670436ce | Andrew Jones | "the maximum cpus supported by KVM (%d)\n",
|
1414 | 670436ce | Andrew Jones | nc->name, nc->num, hard_vcpus_limit); |
1415 | 670436ce | Andrew Jones | goto err;
|
1416 | 670436ce | Andrew Jones | } |
1417 | 670436ce | Andrew Jones | } |
1418 | 670436ce | Andrew Jones | nc++; |
1419 | 7dc52526 | Marcelo Tosatti | } |
1420 | 7dc52526 | Marcelo Tosatti | |
1421 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
1422 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
1423 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
1424 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
1425 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
1426 | 0104dcac | Alexander Graf | #endif
|
1427 | db9eae1c | Xu He Jie | ret = s->vmfd; |
1428 | 05330448 | aliguori | goto err;
|
1429 | 0104dcac | Alexander Graf | } |
1430 | 05330448 | aliguori | |
1431 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1432 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
1433 | 94a8d39a | Jan Kiszka | missing_cap = |
1434 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
1435 | 05330448 | aliguori | } |
1436 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
1437 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
1438 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
1439 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
1440 | d85dc283 | aliguori | goto err;
|
1441 | d85dc283 | aliguori | } |
1442 | d85dc283 | aliguori | |
1443 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
1444 | f65ed4c1 | aliguori | |
1445 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
1446 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
1447 | e69917e2 | Jan Kiszka | if (ret > 0) { |
1448 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
1449 | e69917e2 | Jan Kiszka | } |
1450 | e69917e2 | Jan Kiszka | |
1451 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1452 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
1453 | a0fb002c | Jan Kiszka | #endif
|
1454 | a0fb002c | Jan Kiszka | |
1455 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
1456 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
1457 | b0b1d690 | Jan Kiszka | |
1458 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1459 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
1460 | ff44f1a3 | Jan Kiszka | #endif
|
1461 | ff44f1a3 | Jan Kiszka | |
1462 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
1463 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
1464 | f1665b21 | Sheng Yang | #endif
|
1465 | f1665b21 | Sheng Yang | |
1466 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
1467 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
1468 | f1665b21 | Sheng Yang | #endif
|
1469 | f1665b21 | Sheng Yang | |
1470 | 8a7c7393 | Jan Kiszka | #ifdef KVM_CAP_PIT_STATE2
|
1471 | 8a7c7393 | Jan Kiszka | s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); |
1472 | 8a7c7393 | Jan Kiszka | #endif
|
1473 | 8a7c7393 | Jan Kiszka | |
1474 | d3d3bef0 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
1475 | 4a3adebb | Jan Kiszka | s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0);
|
1476 | d3d3bef0 | Jan Kiszka | #endif
|
1477 | 4a3adebb | Jan Kiszka | |
1478 | 3ab73842 | Jan Kiszka | s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3); |
1479 | 3ab73842 | Jan Kiszka | |
1480 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE; |
1481 | 8732fbd2 | Peter Maydell | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
|
1482 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; |
1483 | 8732fbd2 | Peter Maydell | } |
1484 | 8732fbd2 | Peter Maydell | |
1485 | df9c8b75 | Jordan Justen | #ifdef KVM_CAP_READONLY_MEM
|
1486 | df9c8b75 | Jordan Justen | kvm_readonly_mem_allowed = |
1487 | df9c8b75 | Jordan Justen | (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
|
1488 | df9c8b75 | Jordan Justen | #endif
|
1489 | df9c8b75 | Jordan Justen | |
1490 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
1491 | a426e122 | Jan Kiszka | if (ret < 0) { |
1492 | 05330448 | aliguori | goto err;
|
1493 | a426e122 | Jan Kiszka | } |
1494 | 05330448 | aliguori | |
1495 | 84b058d7 | Jan Kiszka | ret = kvm_irqchip_create(s); |
1496 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1497 | 84b058d7 | Jan Kiszka | goto err;
|
1498 | 84b058d7 | Jan Kiszka | } |
1499 | 84b058d7 | Jan Kiszka | |
1500 | 05330448 | aliguori | kvm_state = s; |
1501 | f6790af6 | Avi Kivity | memory_listener_register(&kvm_memory_listener, &address_space_memory); |
1502 | f6790af6 | Avi Kivity | memory_listener_register(&kvm_io_listener, &address_space_io); |
1503 | 05330448 | aliguori | |
1504 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1505 | d2f2b8a7 | Stefan Hajnoczi | |
1506 | aa7f74d1 | Jan Kiszka | cpu_interrupt_handler = kvm_handle_interrupt; |
1507 | aa7f74d1 | Jan Kiszka | |
1508 | 05330448 | aliguori | return 0; |
1509 | 05330448 | aliguori | |
1510 | 05330448 | aliguori | err:
|
1511 | 6d1cc321 | Stefan Weil | if (s->vmfd >= 0) { |
1512 | 6d1cc321 | Stefan Weil | close(s->vmfd); |
1513 | 6d1cc321 | Stefan Weil | } |
1514 | 6d1cc321 | Stefan Weil | if (s->fd != -1) { |
1515 | 6d1cc321 | Stefan Weil | close(s->fd); |
1516 | 05330448 | aliguori | } |
1517 | 7267c094 | Anthony Liguori | g_free(s); |
1518 | 05330448 | aliguori | |
1519 | 05330448 | aliguori | return ret;
|
1520 | 05330448 | aliguori | } |
1521 | 05330448 | aliguori | |
1522 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1523 | b30e93e9 | Jan Kiszka | uint32_t count) |
1524 | 05330448 | aliguori | { |
1525 | 05330448 | aliguori | int i;
|
1526 | 05330448 | aliguori | uint8_t *ptr = data; |
1527 | 05330448 | aliguori | |
1528 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
1529 | 354678c5 | Jan Kiszka | address_space_rw(&address_space_io, port, ptr, size, |
1530 | 354678c5 | Jan Kiszka | direction == KVM_EXIT_IO_OUT); |
1531 | 05330448 | aliguori | ptr += size; |
1532 | 05330448 | aliguori | } |
1533 | 05330448 | aliguori | } |
1534 | 05330448 | aliguori | |
1535 | 5326ab55 | Andreas Färber | static int kvm_handle_internal_error(CPUState *cpu, struct kvm_run *run) |
1536 | 7c80eef8 | Marcelo Tosatti | { |
1537 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
1538 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
1539 | 7c80eef8 | Marcelo Tosatti | int i;
|
1540 | 7c80eef8 | Marcelo Tosatti | |
1541 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
1542 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
1543 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
1544 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
1545 | 7c80eef8 | Marcelo Tosatti | } |
1546 | bb44e0d1 | Jan Kiszka | } else {
|
1547 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
1548 | 7c80eef8 | Marcelo Tosatti | } |
1549 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
1550 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
1551 | 20d695a9 | Andreas Färber | if (!kvm_arch_stop_on_emulation_error(cpu)) {
|
1552 | 878096ee | Andreas Färber | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
1553 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
1554 | a426e122 | Jan Kiszka | } |
1555 | 7c80eef8 | Marcelo Tosatti | } |
1556 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
1557 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
1558 | 7c80eef8 | Marcelo Tosatti | */
|
1559 | 73aaec4a | Jan Kiszka | return -1; |
1560 | 7c80eef8 | Marcelo Tosatti | } |
1561 | 7c80eef8 | Marcelo Tosatti | |
1562 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
1563 | f65ed4c1 | aliguori | { |
1564 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
1565 | 1cae88b9 | Avi Kivity | |
1566 | 1cae88b9 | Avi Kivity | if (s->coalesced_flush_in_progress) {
|
1567 | 1cae88b9 | Avi Kivity | return;
|
1568 | 1cae88b9 | Avi Kivity | } |
1569 | 1cae88b9 | Avi Kivity | |
1570 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = true;
|
1571 | 1cae88b9 | Avi Kivity | |
1572 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
1573 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
1574 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
1575 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
1576 | f65ed4c1 | aliguori | |
1577 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
1578 | f65ed4c1 | aliguori | |
1579 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
1580 | 85199474 | Marcelo Tosatti | smp_wmb(); |
1581 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
1582 | f65ed4c1 | aliguori | } |
1583 | f65ed4c1 | aliguori | } |
1584 | 1cae88b9 | Avi Kivity | |
1585 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = false;
|
1586 | f65ed4c1 | aliguori | } |
1587 | f65ed4c1 | aliguori | |
1588 | 20d695a9 | Andreas Färber | static void do_kvm_cpu_synchronize_state(void *arg) |
1589 | 4c0960c0 | Avi Kivity | { |
1590 | 20d695a9 | Andreas Färber | CPUState *cpu = arg; |
1591 | 2705d56a | Jan Kiszka | |
1592 | 20d695a9 | Andreas Färber | if (!cpu->kvm_vcpu_dirty) {
|
1593 | 20d695a9 | Andreas Färber | kvm_arch_get_registers(cpu); |
1594 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = true;
|
1595 | 4c0960c0 | Avi Kivity | } |
1596 | 4c0960c0 | Avi Kivity | } |
1597 | 4c0960c0 | Avi Kivity | |
1598 | dd1750d7 | Andreas Färber | void kvm_cpu_synchronize_state(CPUState *cpu)
|
1599 | 2705d56a | Jan Kiszka | { |
1600 | 20d695a9 | Andreas Färber | if (!cpu->kvm_vcpu_dirty) {
|
1601 | 20d695a9 | Andreas Färber | run_on_cpu(cpu, do_kvm_cpu_synchronize_state, cpu); |
1602 | a426e122 | Jan Kiszka | } |
1603 | 2705d56a | Jan Kiszka | } |
1604 | 2705d56a | Jan Kiszka | |
1605 | 3f24a58f | Igor Mammedov | void kvm_cpu_synchronize_post_reset(CPUState *cpu)
|
1606 | ea375f9a | Jan Kiszka | { |
1607 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE); |
1608 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1609 | ea375f9a | Jan Kiszka | } |
1610 | ea375f9a | Jan Kiszka | |
1611 | 3f24a58f | Igor Mammedov | void kvm_cpu_synchronize_post_init(CPUState *cpu)
|
1612 | ea375f9a | Jan Kiszka | { |
1613 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE); |
1614 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1615 | ea375f9a | Jan Kiszka | } |
1616 | ea375f9a | Jan Kiszka | |
1617 | 1458c363 | Andreas Färber | int kvm_cpu_exec(CPUState *cpu)
|
1618 | 05330448 | aliguori | { |
1619 | f7575c96 | Andreas Färber | struct kvm_run *run = cpu->kvm_run;
|
1620 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
1621 | 05330448 | aliguori | |
1622 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
1623 | 05330448 | aliguori | |
1624 | 20d695a9 | Andreas Färber | if (kvm_arch_process_async_events(cpu)) {
|
1625 | fcd7d003 | Andreas Färber | cpu->exit_request = 0;
|
1626 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
1627 | 9ccfac9e | Jan Kiszka | } |
1628 | 0af691d7 | Marcelo Tosatti | |
1629 | 9ccfac9e | Jan Kiszka | do {
|
1630 | 20d695a9 | Andreas Färber | if (cpu->kvm_vcpu_dirty) {
|
1631 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE); |
1632 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1633 | 4c0960c0 | Avi Kivity | } |
1634 | 4c0960c0 | Avi Kivity | |
1635 | 20d695a9 | Andreas Färber | kvm_arch_pre_run(cpu, run); |
1636 | fcd7d003 | Andreas Färber | if (cpu->exit_request) {
|
1637 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
1638 | 9ccfac9e | Jan Kiszka | /*
|
1639 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
1640 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
1641 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
1642 | 9ccfac9e | Jan Kiszka | */
|
1643 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
1644 | 9ccfac9e | Jan Kiszka | } |
1645 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
1646 | 9ccfac9e | Jan Kiszka | |
1647 | 1bc22652 | Andreas Färber | run_ret = kvm_vcpu_ioctl(cpu, KVM_RUN, 0);
|
1648 | 9ccfac9e | Jan Kiszka | |
1649 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
1650 | 20d695a9 | Andreas Färber | kvm_arch_post_run(cpu, run); |
1651 | 05330448 | aliguori | |
1652 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
1653 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
1654 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
1655 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1656 | dc77d341 | Jan Kiszka | break;
|
1657 | dc77d341 | Jan Kiszka | } |
1658 | 7b011fbc | Michael Ellerman | fprintf(stderr, "error: kvm run failed %s\n",
|
1659 | 7b011fbc | Michael Ellerman | strerror(-run_ret)); |
1660 | 05330448 | aliguori | abort(); |
1661 | 05330448 | aliguori | } |
1662 | 05330448 | aliguori | |
1663 | b76ac80a | Kazuya Saito | trace_kvm_run_exit(cpu->cpu_index, run->exit_reason); |
1664 | 05330448 | aliguori | switch (run->exit_reason) {
|
1665 | 05330448 | aliguori | case KVM_EXIT_IO:
|
1666 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
1667 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
1668 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
1669 | b30e93e9 | Jan Kiszka | run->io.direction, |
1670 | b30e93e9 | Jan Kiszka | run->io.size, |
1671 | b30e93e9 | Jan Kiszka | run->io.count); |
1672 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1673 | 05330448 | aliguori | break;
|
1674 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
1675 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
1676 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
1677 | 05330448 | aliguori | run->mmio.data, |
1678 | 05330448 | aliguori | run->mmio.len, |
1679 | 05330448 | aliguori | run->mmio.is_write); |
1680 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1681 | 05330448 | aliguori | break;
|
1682 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
1683 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
1684 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1685 | 05330448 | aliguori | break;
|
1686 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
1687 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
1688 | 05330448 | aliguori | qemu_system_reset_request(); |
1689 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1690 | 05330448 | aliguori | break;
|
1691 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
1692 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1693 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
1694 | 73aaec4a | Jan Kiszka | ret = -1;
|
1695 | 05330448 | aliguori | break;
|
1696 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
1697 | 5326ab55 | Andreas Färber | ret = kvm_handle_internal_error(cpu, run); |
1698 | 7c80eef8 | Marcelo Tosatti | break;
|
1699 | 05330448 | aliguori | default:
|
1700 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
1701 | 20d695a9 | Andreas Färber | ret = kvm_arch_handle_exit(cpu, run); |
1702 | 05330448 | aliguori | break;
|
1703 | 05330448 | aliguori | } |
1704 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
1705 | 05330448 | aliguori | |
1706 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
1707 | 878096ee | Andreas Färber | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
1708 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_INTERNAL_ERROR); |
1709 | becfc390 | aliguori | } |
1710 | becfc390 | aliguori | |
1711 | fcd7d003 | Andreas Färber | cpu->exit_request = 0;
|
1712 | 05330448 | aliguori | return ret;
|
1713 | 05330448 | aliguori | } |
1714 | 05330448 | aliguori | |
1715 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1716 | 05330448 | aliguori | { |
1717 | 05330448 | aliguori | int ret;
|
1718 | 984b5181 | aliguori | void *arg;
|
1719 | 984b5181 | aliguori | va_list ap; |
1720 | 05330448 | aliguori | |
1721 | 984b5181 | aliguori | va_start(ap, type); |
1722 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1723 | 984b5181 | aliguori | va_end(ap); |
1724 | 984b5181 | aliguori | |
1725 | 9c775729 | Kazuya Saito | trace_kvm_ioctl(type, arg); |
1726 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1727 | a426e122 | Jan Kiszka | if (ret == -1) { |
1728 | 05330448 | aliguori | ret = -errno; |
1729 | a426e122 | Jan Kiszka | } |
1730 | 05330448 | aliguori | return ret;
|
1731 | 05330448 | aliguori | } |
1732 | 05330448 | aliguori | |
1733 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1734 | 05330448 | aliguori | { |
1735 | 05330448 | aliguori | int ret;
|
1736 | 984b5181 | aliguori | void *arg;
|
1737 | 984b5181 | aliguori | va_list ap; |
1738 | 984b5181 | aliguori | |
1739 | 984b5181 | aliguori | va_start(ap, type); |
1740 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1741 | 984b5181 | aliguori | va_end(ap); |
1742 | 05330448 | aliguori | |
1743 | 9c775729 | Kazuya Saito | trace_kvm_vm_ioctl(type, arg); |
1744 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1745 | a426e122 | Jan Kiszka | if (ret == -1) { |
1746 | 05330448 | aliguori | ret = -errno; |
1747 | a426e122 | Jan Kiszka | } |
1748 | 05330448 | aliguori | return ret;
|
1749 | 05330448 | aliguori | } |
1750 | 05330448 | aliguori | |
1751 | 1bc22652 | Andreas Färber | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...) |
1752 | 05330448 | aliguori | { |
1753 | 05330448 | aliguori | int ret;
|
1754 | 984b5181 | aliguori | void *arg;
|
1755 | 984b5181 | aliguori | va_list ap; |
1756 | 984b5181 | aliguori | |
1757 | 984b5181 | aliguori | va_start(ap, type); |
1758 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1759 | 984b5181 | aliguori | va_end(ap); |
1760 | 05330448 | aliguori | |
1761 | 9c775729 | Kazuya Saito | trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg); |
1762 | 8737c51c | Andreas Färber | ret = ioctl(cpu->kvm_fd, type, arg); |
1763 | a426e122 | Jan Kiszka | if (ret == -1) { |
1764 | 05330448 | aliguori | ret = -errno; |
1765 | a426e122 | Jan Kiszka | } |
1766 | 05330448 | aliguori | return ret;
|
1767 | 05330448 | aliguori | } |
1768 | bd322087 | aliguori | |
1769 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1770 | bd322087 | aliguori | { |
1771 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1772 | bd322087 | aliguori | } |
1773 | e22a25c9 | aliguori | |
1774 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1775 | a0fb002c | Jan Kiszka | { |
1776 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1777 | a0fb002c | Jan Kiszka | } |
1778 | a0fb002c | Jan Kiszka | |
1779 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1780 | b0b1d690 | Jan Kiszka | { |
1781 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1782 | b0b1d690 | Jan Kiszka | } |
1783 | b0b1d690 | Jan Kiszka | |
1784 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1785 | ff44f1a3 | Jan Kiszka | { |
1786 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1787 | ff44f1a3 | Jan Kiszka | } |
1788 | ff44f1a3 | Jan Kiszka | |
1789 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1790 | f1665b21 | Sheng Yang | { |
1791 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1792 | f1665b21 | Sheng Yang | } |
1793 | f1665b21 | Sheng Yang | |
1794 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1795 | f1665b21 | Sheng Yang | { |
1796 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1797 | f1665b21 | Sheng Yang | } |
1798 | f1665b21 | Sheng Yang | |
1799 | 8a7c7393 | Jan Kiszka | int kvm_has_pit_state2(void) |
1800 | 8a7c7393 | Jan Kiszka | { |
1801 | 8a7c7393 | Jan Kiszka | return kvm_state->pit_state2;
|
1802 | 8a7c7393 | Jan Kiszka | } |
1803 | 8a7c7393 | Jan Kiszka | |
1804 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1805 | d2f2b8a7 | Stefan Hajnoczi | { |
1806 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1807 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1808 | d2f2b8a7 | Stefan Hajnoczi | } |
1809 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1810 | d2f2b8a7 | Stefan Hajnoczi | } |
1811 | d2f2b8a7 | Stefan Hajnoczi | |
1812 | 84b058d7 | Jan Kiszka | int kvm_has_gsi_routing(void) |
1813 | 84b058d7 | Jan Kiszka | { |
1814 | a9c5eb0d | Alexander Graf | #ifdef KVM_CAP_IRQ_ROUTING
|
1815 | 84b058d7 | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
|
1816 | a9c5eb0d | Alexander Graf | #else
|
1817 | a9c5eb0d | Alexander Graf | return false; |
1818 | a9c5eb0d | Alexander Graf | #endif
|
1819 | 84b058d7 | Jan Kiszka | } |
1820 | 84b058d7 | Jan Kiszka | |
1821 | 3ab73842 | Jan Kiszka | int kvm_has_intx_set_mask(void) |
1822 | 3ab73842 | Jan Kiszka | { |
1823 | 3ab73842 | Jan Kiszka | return kvm_state->intx_set_mask;
|
1824 | 3ab73842 | Jan Kiszka | } |
1825 | 3ab73842 | Jan Kiszka | |
1826 | 6eebf958 | Paolo Bonzini | void *kvm_ram_alloc(ram_addr_t size)
|
1827 | fdec9918 | Christian Borntraeger | { |
1828 | fdec9918 | Christian Borntraeger | #ifdef TARGET_S390X
|
1829 | fdec9918 | Christian Borntraeger | void *mem;
|
1830 | fdec9918 | Christian Borntraeger | |
1831 | 6eebf958 | Paolo Bonzini | mem = kvm_arch_ram_alloc(size); |
1832 | fdec9918 | Christian Borntraeger | if (mem) {
|
1833 | fdec9918 | Christian Borntraeger | return mem;
|
1834 | fdec9918 | Christian Borntraeger | } |
1835 | fdec9918 | Christian Borntraeger | #endif
|
1836 | 6eebf958 | Paolo Bonzini | return qemu_anon_ram_alloc(size);
|
1837 | fdec9918 | Christian Borntraeger | } |
1838 | fdec9918 | Christian Borntraeger | |
1839 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1840 | 6f0437e8 | Jan Kiszka | { |
1841 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
|
1842 | 62fe8331 | Christian Borntraeger | VALGRIND_MAKE_MEM_DEFINED(start, size); |
1843 | 62fe8331 | Christian Borntraeger | #endif
|
1844 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1845 | e78815a5 | Andreas Färber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1846 | 6f0437e8 | Jan Kiszka | |
1847 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1848 | e78815a5 | Andreas Färber | perror("qemu_madvise");
|
1849 | e78815a5 | Andreas Färber | fprintf(stderr, |
1850 | e78815a5 | Andreas Färber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1851 | 6f0437e8 | Jan Kiszka | exit(1);
|
1852 | 6f0437e8 | Jan Kiszka | } |
1853 | 6f0437e8 | Jan Kiszka | } |
1854 | 6f0437e8 | Jan Kiszka | } |
1855 | 6f0437e8 | Jan Kiszka | |
1856 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1857 | a60f24b5 | Andreas Färber | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu,
|
1858 | e22a25c9 | aliguori | target_ulong pc) |
1859 | e22a25c9 | aliguori | { |
1860 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1861 | e22a25c9 | aliguori | |
1862 | a60f24b5 | Andreas Färber | QTAILQ_FOREACH(bp, &cpu->kvm_state->kvm_sw_breakpoints, entry) { |
1863 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1864 | e22a25c9 | aliguori | return bp;
|
1865 | a426e122 | Jan Kiszka | } |
1866 | e22a25c9 | aliguori | } |
1867 | e22a25c9 | aliguori | return NULL; |
1868 | e22a25c9 | aliguori | } |
1869 | e22a25c9 | aliguori | |
1870 | a60f24b5 | Andreas Färber | int kvm_sw_breakpoints_active(CPUState *cpu)
|
1871 | e22a25c9 | aliguori | { |
1872 | a60f24b5 | Andreas Färber | return !QTAILQ_EMPTY(&cpu->kvm_state->kvm_sw_breakpoints);
|
1873 | e22a25c9 | aliguori | } |
1874 | e22a25c9 | aliguori | |
1875 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1876 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1877 | a60f24b5 | Andreas Färber | CPUState *cpu; |
1878 | 452e4751 | Glauber Costa | int err;
|
1879 | 452e4751 | Glauber Costa | }; |
1880 | 452e4751 | Glauber Costa | |
1881 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1882 | 452e4751 | Glauber Costa | { |
1883 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1884 | b3807725 | Jan Kiszka | |
1885 | a60f24b5 | Andreas Färber | dbg_data->err = kvm_vcpu_ioctl(dbg_data->cpu, KVM_SET_GUEST_DEBUG, |
1886 | a60f24b5 | Andreas Färber | &dbg_data->dbg); |
1887 | 452e4751 | Glauber Costa | } |
1888 | 452e4751 | Glauber Costa | |
1889 | 38e478ec | Stefan Weil | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
1890 | e22a25c9 | aliguori | { |
1891 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1892 | e22a25c9 | aliguori | |
1893 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1894 | e22a25c9 | aliguori | |
1895 | ed2803da | Andreas Färber | if (cpu->singlestep_enabled) {
|
1896 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1897 | b0b1d690 | Jan Kiszka | } |
1898 | 20d695a9 | Andreas Färber | kvm_arch_update_guest_debug(cpu, &data.dbg); |
1899 | a60f24b5 | Andreas Färber | data.cpu = cpu; |
1900 | e22a25c9 | aliguori | |
1901 | f100f0b3 | Andreas Färber | run_on_cpu(cpu, kvm_invoke_set_guest_debug, &data); |
1902 | 452e4751 | Glauber Costa | return data.err;
|
1903 | e22a25c9 | aliguori | } |
1904 | e22a25c9 | aliguori | |
1905 | 62278814 | Andreas Färber | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
|
1906 | e22a25c9 | aliguori | target_ulong len, int type)
|
1907 | e22a25c9 | aliguori | { |
1908 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1909 | e22a25c9 | aliguori | int err;
|
1910 | e22a25c9 | aliguori | |
1911 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1912 | 80b7cd73 | Andreas Färber | bp = kvm_find_sw_breakpoint(cpu, addr); |
1913 | e22a25c9 | aliguori | if (bp) {
|
1914 | e22a25c9 | aliguori | bp->use_count++; |
1915 | e22a25c9 | aliguori | return 0; |
1916 | e22a25c9 | aliguori | } |
1917 | e22a25c9 | aliguori | |
1918 | 7267c094 | Anthony Liguori | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
1919 | a426e122 | Jan Kiszka | if (!bp) {
|
1920 | e22a25c9 | aliguori | return -ENOMEM;
|
1921 | a426e122 | Jan Kiszka | } |
1922 | e22a25c9 | aliguori | |
1923 | e22a25c9 | aliguori | bp->pc = addr; |
1924 | e22a25c9 | aliguori | bp->use_count = 1;
|
1925 | 80b7cd73 | Andreas Färber | err = kvm_arch_insert_sw_breakpoint(cpu, bp); |
1926 | e22a25c9 | aliguori | if (err) {
|
1927 | 7267c094 | Anthony Liguori | g_free(bp); |
1928 | e22a25c9 | aliguori | return err;
|
1929 | e22a25c9 | aliguori | } |
1930 | e22a25c9 | aliguori | |
1931 | 80b7cd73 | Andreas Färber | QTAILQ_INSERT_HEAD(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
1932 | e22a25c9 | aliguori | } else {
|
1933 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1934 | a426e122 | Jan Kiszka | if (err) {
|
1935 | e22a25c9 | aliguori | return err;
|
1936 | a426e122 | Jan Kiszka | } |
1937 | e22a25c9 | aliguori | } |
1938 | e22a25c9 | aliguori | |
1939 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1940 | 38e478ec | Stefan Weil | err = kvm_update_guest_debug(cpu, 0);
|
1941 | a426e122 | Jan Kiszka | if (err) {
|
1942 | e22a25c9 | aliguori | return err;
|
1943 | a426e122 | Jan Kiszka | } |
1944 | e22a25c9 | aliguori | } |
1945 | e22a25c9 | aliguori | return 0; |
1946 | e22a25c9 | aliguori | } |
1947 | e22a25c9 | aliguori | |
1948 | 62278814 | Andreas Färber | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
|
1949 | e22a25c9 | aliguori | target_ulong len, int type)
|
1950 | e22a25c9 | aliguori | { |
1951 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1952 | e22a25c9 | aliguori | int err;
|
1953 | e22a25c9 | aliguori | |
1954 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1955 | 80b7cd73 | Andreas Färber | bp = kvm_find_sw_breakpoint(cpu, addr); |
1956 | a426e122 | Jan Kiszka | if (!bp) {
|
1957 | e22a25c9 | aliguori | return -ENOENT;
|
1958 | a426e122 | Jan Kiszka | } |
1959 | e22a25c9 | aliguori | |
1960 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1961 | e22a25c9 | aliguori | bp->use_count--; |
1962 | e22a25c9 | aliguori | return 0; |
1963 | e22a25c9 | aliguori | } |
1964 | e22a25c9 | aliguori | |
1965 | 80b7cd73 | Andreas Färber | err = kvm_arch_remove_sw_breakpoint(cpu, bp); |
1966 | a426e122 | Jan Kiszka | if (err) {
|
1967 | e22a25c9 | aliguori | return err;
|
1968 | a426e122 | Jan Kiszka | } |
1969 | e22a25c9 | aliguori | |
1970 | 80b7cd73 | Andreas Färber | QTAILQ_REMOVE(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
1971 | 7267c094 | Anthony Liguori | g_free(bp); |
1972 | e22a25c9 | aliguori | } else {
|
1973 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1974 | a426e122 | Jan Kiszka | if (err) {
|
1975 | e22a25c9 | aliguori | return err;
|
1976 | a426e122 | Jan Kiszka | } |
1977 | e22a25c9 | aliguori | } |
1978 | e22a25c9 | aliguori | |
1979 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1980 | 38e478ec | Stefan Weil | err = kvm_update_guest_debug(cpu, 0);
|
1981 | a426e122 | Jan Kiszka | if (err) {
|
1982 | e22a25c9 | aliguori | return err;
|
1983 | a426e122 | Jan Kiszka | } |
1984 | e22a25c9 | aliguori | } |
1985 | e22a25c9 | aliguori | return 0; |
1986 | e22a25c9 | aliguori | } |
1987 | e22a25c9 | aliguori | |
1988 | 1d5791f4 | Andreas Färber | void kvm_remove_all_breakpoints(CPUState *cpu)
|
1989 | e22a25c9 | aliguori | { |
1990 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1991 | 80b7cd73 | Andreas Färber | KVMState *s = cpu->kvm_state; |
1992 | e22a25c9 | aliguori | |
1993 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1994 | 80b7cd73 | Andreas Färber | if (kvm_arch_remove_sw_breakpoint(cpu, bp) != 0) { |
1995 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1996 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1997 | 20d695a9 | Andreas Färber | if (kvm_arch_remove_sw_breakpoint(cpu, bp) == 0) { |
1998 | e22a25c9 | aliguori | break;
|
1999 | a426e122 | Jan Kiszka | } |
2000 | e22a25c9 | aliguori | } |
2001 | e22a25c9 | aliguori | } |
2002 | 78021d6d | Jan Kiszka | QTAILQ_REMOVE(&s->kvm_sw_breakpoints, bp, entry); |
2003 | 78021d6d | Jan Kiszka | g_free(bp); |
2004 | e22a25c9 | aliguori | } |
2005 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
2006 | e22a25c9 | aliguori | |
2007 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
2008 | 38e478ec | Stefan Weil | kvm_update_guest_debug(cpu, 0);
|
2009 | a426e122 | Jan Kiszka | } |
2010 | e22a25c9 | aliguori | } |
2011 | e22a25c9 | aliguori | |
2012 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
2013 | e22a25c9 | aliguori | |
2014 | 38e478ec | Stefan Weil | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
2015 | e22a25c9 | aliguori | { |
2016 | e22a25c9 | aliguori | return -EINVAL;
|
2017 | e22a25c9 | aliguori | } |
2018 | e22a25c9 | aliguori | |
2019 | 62278814 | Andreas Färber | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
|
2020 | e22a25c9 | aliguori | target_ulong len, int type)
|
2021 | e22a25c9 | aliguori | { |
2022 | e22a25c9 | aliguori | return -EINVAL;
|
2023 | e22a25c9 | aliguori | } |
2024 | e22a25c9 | aliguori | |
2025 | 62278814 | Andreas Färber | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
|
2026 | e22a25c9 | aliguori | target_ulong len, int type)
|
2027 | e22a25c9 | aliguori | { |
2028 | e22a25c9 | aliguori | return -EINVAL;
|
2029 | e22a25c9 | aliguori | } |
2030 | e22a25c9 | aliguori | |
2031 | 1d5791f4 | Andreas Färber | void kvm_remove_all_breakpoints(CPUState *cpu)
|
2032 | e22a25c9 | aliguori | { |
2033 | e22a25c9 | aliguori | } |
2034 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
2035 | cc84de95 | Marcelo Tosatti | |
2036 | 491d6e80 | Andreas Färber | int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset) |
2037 | cc84de95 | Marcelo Tosatti | { |
2038 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
2039 | cc84de95 | Marcelo Tosatti | int r;
|
2040 | cc84de95 | Marcelo Tosatti | |
2041 | a426e122 | Jan Kiszka | if (!sigset) {
|
2042 | 1bc22652 | Andreas Färber | return kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, NULL); |
2043 | a426e122 | Jan Kiszka | } |
2044 | cc84de95 | Marcelo Tosatti | |
2045 | 7267c094 | Anthony Liguori | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
2046 | cc84de95 | Marcelo Tosatti | |
2047 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
2048 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
2049 | 1bc22652 | Andreas Färber | r = kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, sigmask); |
2050 | 7267c094 | Anthony Liguori | g_free(sigmask); |
2051 | cc84de95 | Marcelo Tosatti | |
2052 | cc84de95 | Marcelo Tosatti | return r;
|
2053 | cc84de95 | Marcelo Tosatti | } |
2054 | 290adf38 | Andreas Färber | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
2055 | a1b87fe0 | Jan Kiszka | { |
2056 | 20d695a9 | Andreas Färber | return kvm_arch_on_sigbus_vcpu(cpu, code, addr);
|
2057 | a1b87fe0 | Jan Kiszka | } |
2058 | a1b87fe0 | Jan Kiszka | |
2059 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
2060 | a1b87fe0 | Jan Kiszka | { |
2061 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
2062 | a1b87fe0 | Jan Kiszka | } |