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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 | cc7e0ddf | Peter Maydell | bool kvm_irqfds_allowed;
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111 | 614e41bc | Peter Maydell | bool kvm_msi_via_irqfd_allowed;
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112 | f3e1bed8 | Peter Maydell | bool kvm_gsi_routing_allowed;
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113 | 13eed94e | Igor Mammedov | bool kvm_allowed;
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114 | df9c8b75 | Jordan Justen | bool kvm_readonly_mem_allowed;
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115 | 05330448 | aliguori | |
116 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
117 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
118 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
119 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
120 | 94a8d39a | Jan Kiszka | }; |
121 | 94a8d39a | Jan Kiszka | |
122 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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123 | 05330448 | aliguori | { |
124 | 05330448 | aliguori | int i;
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125 | 05330448 | aliguori | |
126 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
127 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
128 | 05330448 | aliguori | return &s->slots[i];
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129 | a426e122 | Jan Kiszka | } |
130 | 05330448 | aliguori | } |
131 | 05330448 | aliguori | |
132 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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133 | d3f8d37f | aliguori | abort(); |
134 | d3f8d37f | aliguori | } |
135 | d3f8d37f | aliguori | |
136 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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137 | a8170e5e | Avi Kivity | hwaddr start_addr, |
138 | a8170e5e | Avi Kivity | hwaddr end_addr) |
139 | d3f8d37f | aliguori | { |
140 | d3f8d37f | aliguori | int i;
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141 | d3f8d37f | aliguori | |
142 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
143 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
144 | d3f8d37f | aliguori | |
145 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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146 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
147 | d3f8d37f | aliguori | return mem;
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148 | d3f8d37f | aliguori | } |
149 | d3f8d37f | aliguori | } |
150 | d3f8d37f | aliguori | |
151 | 05330448 | aliguori | return NULL; |
152 | 05330448 | aliguori | } |
153 | 05330448 | aliguori | |
154 | 6152e2ae | aliguori | /*
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155 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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156 | 6152e2ae | aliguori | */
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157 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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158 | a8170e5e | Avi Kivity | hwaddr start_addr, |
159 | a8170e5e | Avi Kivity | hwaddr end_addr) |
160 | 05330448 | aliguori | { |
161 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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162 | 05330448 | aliguori | int i;
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163 | 05330448 | aliguori | |
164 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
165 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
166 | 05330448 | aliguori | |
167 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
168 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
169 | 6152e2ae | aliguori | continue;
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170 | 6152e2ae | aliguori | } |
171 | 6152e2ae | aliguori | |
172 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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173 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
174 | 6152e2ae | aliguori | found = mem; |
175 | 6152e2ae | aliguori | } |
176 | 05330448 | aliguori | } |
177 | 05330448 | aliguori | |
178 | 6152e2ae | aliguori | return found;
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179 | 05330448 | aliguori | } |
180 | 05330448 | aliguori | |
181 | 9f213ed9 | Avi Kivity | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
182 | a8170e5e | Avi Kivity | hwaddr *phys_addr) |
183 | 983dfc3b | Huang Ying | { |
184 | 983dfc3b | Huang Ying | int i;
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185 | 983dfc3b | Huang Ying | |
186 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
187 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
188 | 983dfc3b | Huang Ying | |
189 | 9f213ed9 | Avi Kivity | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
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190 | 9f213ed9 | Avi Kivity | *phys_addr = mem->start_addr + (ram - mem->ram); |
191 | 983dfc3b | Huang Ying | return 1; |
192 | 983dfc3b | Huang Ying | } |
193 | 983dfc3b | Huang Ying | } |
194 | 983dfc3b | Huang Ying | |
195 | 983dfc3b | Huang Ying | return 0; |
196 | 983dfc3b | Huang Ying | } |
197 | 983dfc3b | Huang Ying | |
198 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
199 | 5832d1f2 | aliguori | { |
200 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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201 | 5832d1f2 | aliguori | |
202 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
203 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
204 | 9f213ed9 | Avi Kivity | mem.userspace_addr = (unsigned long)slot->ram; |
205 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
206 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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207 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
208 | 4495d6a7 | Jan Kiszka | } |
209 | 651eb0f4 | Xiao Guangrong | |
210 | 651eb0f4 | Xiao Guangrong | if (slot->memory_size && mem.flags & KVM_MEM_READONLY) {
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211 | 235e8982 | Jordan Justen | /* Set the slot size to 0 before setting the slot to the desired
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212 | 235e8982 | Jordan Justen | * value. This is needed based on KVM commit 75d61fbc. */
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213 | 235e8982 | Jordan Justen | mem.memory_size = 0;
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214 | 235e8982 | Jordan Justen | kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
215 | 235e8982 | Jordan Justen | } |
216 | 235e8982 | Jordan Justen | mem.memory_size = slot->memory_size; |
217 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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218 | 5832d1f2 | aliguori | } |
219 | 5832d1f2 | aliguori | |
220 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
221 | 8d2ba1fb | Jan Kiszka | { |
222 | 20d695a9 | Andreas Färber | CPUState *cpu = opaque; |
223 | 8d2ba1fb | Jan Kiszka | |
224 | 20d695a9 | Andreas Färber | kvm_arch_reset_vcpu(cpu); |
225 | 8d2ba1fb | Jan Kiszka | } |
226 | 5832d1f2 | aliguori | |
227 | 504134d2 | Andreas Färber | int kvm_init_vcpu(CPUState *cpu)
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228 | 05330448 | aliguori | { |
229 | 05330448 | aliguori | KVMState *s = kvm_state; |
230 | 05330448 | aliguori | long mmap_size;
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231 | 05330448 | aliguori | int ret;
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232 | 05330448 | aliguori | |
233 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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234 | 05330448 | aliguori | |
235 | b164e48e | Eduardo Habkost | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)kvm_arch_vcpu_id(cpu));
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236 | 05330448 | aliguori | if (ret < 0) { |
237 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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238 | 05330448 | aliguori | goto err;
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239 | 05330448 | aliguori | } |
240 | 05330448 | aliguori | |
241 | 8737c51c | Andreas Färber | cpu->kvm_fd = ret; |
242 | a60f24b5 | Andreas Färber | cpu->kvm_state = s; |
243 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = true;
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244 | 05330448 | aliguori | |
245 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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246 | 05330448 | aliguori | if (mmap_size < 0) { |
247 | 748a680b | Jan Kiszka | ret = mmap_size; |
248 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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249 | 05330448 | aliguori | goto err;
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250 | 05330448 | aliguori | } |
251 | 05330448 | aliguori | |
252 | f7575c96 | Andreas Färber | cpu->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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253 | 8737c51c | Andreas Färber | cpu->kvm_fd, 0);
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254 | f7575c96 | Andreas Färber | if (cpu->kvm_run == MAP_FAILED) {
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255 | 05330448 | aliguori | ret = -errno; |
256 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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257 | 05330448 | aliguori | goto err;
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258 | 05330448 | aliguori | } |
259 | 05330448 | aliguori | |
260 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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261 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
262 | f7575c96 | Andreas Färber | (void *)cpu->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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263 | a426e122 | Jan Kiszka | } |
264 | 62a2744c | Sheng Yang | |
265 | 20d695a9 | Andreas Färber | ret = kvm_arch_init_vcpu(cpu); |
266 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
267 | 20d695a9 | Andreas Färber | qemu_register_reset(kvm_reset_vcpu, cpu); |
268 | 20d695a9 | Andreas Färber | kvm_arch_reset_vcpu(cpu); |
269 | 8d2ba1fb | Jan Kiszka | } |
270 | 05330448 | aliguori | err:
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271 | 05330448 | aliguori | return ret;
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272 | 05330448 | aliguori | } |
273 | 05330448 | aliguori | |
274 | 5832d1f2 | aliguori | /*
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275 | 5832d1f2 | aliguori | * dirty pages logging control
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276 | 5832d1f2 | aliguori | */
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277 | 25254bbc | Michael S. Tsirkin | |
278 | 235e8982 | Jordan Justen | static int kvm_mem_flags(KVMState *s, bool log_dirty, bool readonly) |
279 | 25254bbc | Michael S. Tsirkin | { |
280 | 235e8982 | Jordan Justen | int flags = 0; |
281 | 235e8982 | Jordan Justen | flags = log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0;
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282 | 235e8982 | Jordan Justen | if (readonly && kvm_readonly_mem_allowed) {
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283 | 235e8982 | Jordan Justen | flags |= KVM_MEM_READONLY; |
284 | 235e8982 | Jordan Justen | } |
285 | 235e8982 | Jordan Justen | return flags;
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286 | 25254bbc | Michael S. Tsirkin | } |
287 | 25254bbc | Michael S. Tsirkin | |
288 | 25254bbc | Michael S. Tsirkin | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
289 | 5832d1f2 | aliguori | { |
290 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
291 | 25254bbc | Michael S. Tsirkin | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
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292 | 4495d6a7 | Jan Kiszka | int old_flags;
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293 | 4495d6a7 | Jan Kiszka | |
294 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
295 | 5832d1f2 | aliguori | |
296 | 235e8982 | Jordan Justen | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty, false);
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297 | 5832d1f2 | aliguori | mem->flags = flags; |
298 | 5832d1f2 | aliguori | |
299 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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300 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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301 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
302 | 4495d6a7 | Jan Kiszka | } |
303 | 25254bbc | Michael S. Tsirkin | |
304 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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305 | 25254bbc | Michael S. Tsirkin | return 0; |
306 | 4495d6a7 | Jan Kiszka | } |
307 | 4495d6a7 | Jan Kiszka | |
308 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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309 | 5832d1f2 | aliguori | } |
310 | 5832d1f2 | aliguori | |
311 | a8170e5e | Avi Kivity | static int kvm_dirty_pages_log_change(hwaddr phys_addr, |
312 | 25254bbc | Michael S. Tsirkin | ram_addr_t size, bool log_dirty)
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313 | 25254bbc | Michael S. Tsirkin | { |
314 | 25254bbc | Michael S. Tsirkin | KVMState *s = kvm_state; |
315 | 25254bbc | Michael S. Tsirkin | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
316 | 25254bbc | Michael S. Tsirkin | |
317 | 25254bbc | Michael S. Tsirkin | if (mem == NULL) { |
318 | 25254bbc | Michael S. Tsirkin | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
319 | 25254bbc | Michael S. Tsirkin | TARGET_FMT_plx "\n", __func__, phys_addr,
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320 | a8170e5e | Avi Kivity | (hwaddr)(phys_addr + size - 1));
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321 | 25254bbc | Michael S. Tsirkin | return -EINVAL;
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322 | 25254bbc | Michael S. Tsirkin | } |
323 | 25254bbc | Michael S. Tsirkin | return kvm_slot_dirty_pages_log_change(mem, log_dirty);
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324 | 25254bbc | Michael S. Tsirkin | } |
325 | 25254bbc | Michael S. Tsirkin | |
326 | a01672d3 | Avi Kivity | static void kvm_log_start(MemoryListener *listener, |
327 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
328 | 5832d1f2 | aliguori | { |
329 | a01672d3 | Avi Kivity | int r;
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330 | a01672d3 | Avi Kivity | |
331 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
332 | a01672d3 | Avi Kivity | section->size, true);
|
333 | a01672d3 | Avi Kivity | if (r < 0) { |
334 | a01672d3 | Avi Kivity | abort(); |
335 | a01672d3 | Avi Kivity | } |
336 | 5832d1f2 | aliguori | } |
337 | 5832d1f2 | aliguori | |
338 | a01672d3 | Avi Kivity | static void kvm_log_stop(MemoryListener *listener, |
339 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
340 | 5832d1f2 | aliguori | { |
341 | a01672d3 | Avi Kivity | int r;
|
342 | a01672d3 | Avi Kivity | |
343 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
344 | a01672d3 | Avi Kivity | section->size, false);
|
345 | a01672d3 | Avi Kivity | if (r < 0) { |
346 | a01672d3 | Avi Kivity | abort(); |
347 | a01672d3 | Avi Kivity | } |
348 | 5832d1f2 | aliguori | } |
349 | 5832d1f2 | aliguori | |
350 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
351 | 4495d6a7 | Jan Kiszka | { |
352 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
353 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
354 | 4495d6a7 | Jan Kiszka | int i, err;
|
355 | 4495d6a7 | Jan Kiszka | |
356 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
357 | 4495d6a7 | Jan Kiszka | |
358 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
359 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
360 | 4495d6a7 | Jan Kiszka | |
361 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
|
362 | 70fedd76 | Alex Williamson | continue;
|
363 | 70fedd76 | Alex Williamson | } |
364 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
|
365 | 4495d6a7 | Jan Kiszka | continue;
|
366 | 4495d6a7 | Jan Kiszka | } |
367 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
368 | 4495d6a7 | Jan Kiszka | if (err) {
|
369 | 4495d6a7 | Jan Kiszka | return err;
|
370 | 4495d6a7 | Jan Kiszka | } |
371 | 4495d6a7 | Jan Kiszka | } |
372 | 4495d6a7 | Jan Kiszka | return 0; |
373 | 4495d6a7 | Jan Kiszka | } |
374 | 4495d6a7 | Jan Kiszka | |
375 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
|
376 | ffcde12f | Avi Kivity | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
377 | ffcde12f | Avi Kivity | unsigned long *bitmap) |
378 | 96c1606b | Alexander Graf | { |
379 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
380 | aa90fec7 | Benjamin Herrenschmidt | unsigned long page_number, c; |
381 | a8170e5e | Avi Kivity | hwaddr addr, addr1; |
382 | 752ced04 | Alexey Kardashevskiy | unsigned int len = ((section->size / getpagesize()) + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
383 | 3145fcb6 | David Gibson | unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE; |
384 | 8369e01c | Marcelo Tosatti | |
385 | 8369e01c | Marcelo Tosatti | /*
|
386 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
|
387 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
|
388 | 8369e01c | Marcelo Tosatti | */
|
389 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
390 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
391 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
392 | 8369e01c | Marcelo Tosatti | do {
|
393 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
|
394 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
395 | 3145fcb6 | David Gibson | page_number = (i * HOST_LONG_BITS + j) * hpratio; |
396 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
397 | ffcde12f | Avi Kivity | addr = section->offset_within_region + addr1; |
398 | 3145fcb6 | David Gibson | memory_region_set_dirty(section->mr, addr, |
399 | 3145fcb6 | David Gibson | TARGET_PAGE_SIZE * hpratio); |
400 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
401 | 8369e01c | Marcelo Tosatti | } |
402 | 8369e01c | Marcelo Tosatti | } |
403 | 8369e01c | Marcelo Tosatti | return 0; |
404 | 96c1606b | Alexander Graf | } |
405 | 96c1606b | Alexander Graf | |
406 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
407 | 8369e01c | Marcelo Tosatti | |
408 | 5832d1f2 | aliguori | /**
|
409 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
410 | fd4aa979 | Blue Swirl | * This function updates qemu's dirty bitmap using
|
411 | fd4aa979 | Blue Swirl | * memory_region_set_dirty(). This means all bits are set
|
412 | fd4aa979 | Blue Swirl | * to dirty.
|
413 | 5832d1f2 | aliguori | *
|
414 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
415 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
416 | 5832d1f2 | aliguori | */
|
417 | ffcde12f | Avi Kivity | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
418 | 5832d1f2 | aliguori | { |
419 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
420 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
421 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
422 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
423 | 151f7749 | Jan Kiszka | int ret = 0; |
424 | a8170e5e | Avi Kivity | hwaddr start_addr = section->offset_within_address_space; |
425 | a8170e5e | Avi Kivity | hwaddr end_addr = start_addr + section->size; |
426 | 5832d1f2 | aliguori | |
427 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
428 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
429 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
430 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
431 | 151f7749 | Jan Kiszka | break;
|
432 | 151f7749 | Jan Kiszka | } |
433 | 5832d1f2 | aliguori | |
434 | 51b0c606 | Michael Tokarev | /* XXX bad kernel interface alert
|
435 | 51b0c606 | Michael Tokarev | * For dirty bitmap, kernel allocates array of size aligned to
|
436 | 51b0c606 | Michael Tokarev | * bits-per-long. But for case when the kernel is 64bits and
|
437 | 51b0c606 | Michael Tokarev | * the userspace is 32bits, userspace can't align to the same
|
438 | 51b0c606 | Michael Tokarev | * bits-per-long, since sizeof(long) is different between kernel
|
439 | 51b0c606 | Michael Tokarev | * and user space. This way, userspace will provide buffer which
|
440 | 51b0c606 | Michael Tokarev | * may be 4 bytes less than the kernel will use, resulting in
|
441 | 51b0c606 | Michael Tokarev | * userspace memory corruption (which is not detectable by valgrind
|
442 | 51b0c606 | Michael Tokarev | * too, in most cases).
|
443 | 51b0c606 | Michael Tokarev | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
|
444 | 51b0c606 | Michael Tokarev | * a hope that sizeof(long) wont become >8 any time soon.
|
445 | 51b0c606 | Michael Tokarev | */
|
446 | 51b0c606 | Michael Tokarev | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
447 | 51b0c606 | Michael Tokarev | /*HOST_LONG_BITS*/ 64) / 8; |
448 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
449 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_malloc(size); |
450 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
451 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
452 | 151f7749 | Jan Kiszka | } |
453 | 151f7749 | Jan Kiszka | allocated_size = size; |
454 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
455 | 5832d1f2 | aliguori | |
456 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
457 | 5832d1f2 | aliguori | |
458 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
459 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
460 | 151f7749 | Jan Kiszka | ret = -1;
|
461 | 151f7749 | Jan Kiszka | break;
|
462 | 151f7749 | Jan Kiszka | } |
463 | 5832d1f2 | aliguori | |
464 | ffcde12f | Avi Kivity | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
465 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
466 | 5832d1f2 | aliguori | } |
467 | 7267c094 | Anthony Liguori | g_free(d.dirty_bitmap); |
468 | 151f7749 | Jan Kiszka | |
469 | 151f7749 | Jan Kiszka | return ret;
|
470 | 5832d1f2 | aliguori | } |
471 | 5832d1f2 | aliguori | |
472 | 95d2994a | Avi Kivity | static void kvm_coalesce_mmio_region(MemoryListener *listener, |
473 | 95d2994a | Avi Kivity | MemoryRegionSection *secion, |
474 | a8170e5e | Avi Kivity | hwaddr start, hwaddr size) |
475 | f65ed4c1 | aliguori | { |
476 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
477 | f65ed4c1 | aliguori | |
478 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
479 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
480 | f65ed4c1 | aliguori | |
481 | f65ed4c1 | aliguori | zone.addr = start; |
482 | f65ed4c1 | aliguori | zone.size = size; |
483 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
484 | f65ed4c1 | aliguori | |
485 | 95d2994a | Avi Kivity | (void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
|
486 | f65ed4c1 | aliguori | } |
487 | f65ed4c1 | aliguori | } |
488 | f65ed4c1 | aliguori | |
489 | 95d2994a | Avi Kivity | static void kvm_uncoalesce_mmio_region(MemoryListener *listener, |
490 | 95d2994a | Avi Kivity | MemoryRegionSection *secion, |
491 | a8170e5e | Avi Kivity | hwaddr start, hwaddr size) |
492 | f65ed4c1 | aliguori | { |
493 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
494 | f65ed4c1 | aliguori | |
495 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
496 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
497 | f65ed4c1 | aliguori | |
498 | f65ed4c1 | aliguori | zone.addr = start; |
499 | f65ed4c1 | aliguori | zone.size = size; |
500 | 7e680753 | Michael S. Tsirkin | zone.pad = 0;
|
501 | f65ed4c1 | aliguori | |
502 | 95d2994a | Avi Kivity | (void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
|
503 | f65ed4c1 | aliguori | } |
504 | f65ed4c1 | aliguori | } |
505 | f65ed4c1 | aliguori | |
506 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
507 | ad7b8b33 | Anthony Liguori | { |
508 | ad7b8b33 | Anthony Liguori | int ret;
|
509 | ad7b8b33 | Anthony Liguori | |
510 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
511 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
512 | ad7b8b33 | Anthony Liguori | ret = 0;
|
513 | ad7b8b33 | Anthony Liguori | } |
514 | ad7b8b33 | Anthony Liguori | |
515 | ad7b8b33 | Anthony Liguori | return ret;
|
516 | ad7b8b33 | Anthony Liguori | } |
517 | ad7b8b33 | Anthony Liguori | |
518 | 44c3f8f7 | Michael S. Tsirkin | static int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val, |
519 | 41cb62c2 | Michael S. Tsirkin | bool assign, uint32_t size, bool datamatch) |
520 | 500ffd4a | Michael S. Tsirkin | { |
521 | 500ffd4a | Michael S. Tsirkin | int ret;
|
522 | 500ffd4a | Michael S. Tsirkin | struct kvm_ioeventfd iofd;
|
523 | 500ffd4a | Michael S. Tsirkin | |
524 | 41cb62c2 | Michael S. Tsirkin | iofd.datamatch = datamatch ? val : 0;
|
525 | 500ffd4a | Michael S. Tsirkin | iofd.addr = addr; |
526 | 500ffd4a | Michael S. Tsirkin | iofd.len = size; |
527 | 41cb62c2 | Michael S. Tsirkin | iofd.flags = 0;
|
528 | 500ffd4a | Michael S. Tsirkin | iofd.fd = fd; |
529 | 500ffd4a | Michael S. Tsirkin | |
530 | 500ffd4a | Michael S. Tsirkin | if (!kvm_enabled()) {
|
531 | 500ffd4a | Michael S. Tsirkin | return -ENOSYS;
|
532 | 500ffd4a | Michael S. Tsirkin | } |
533 | 500ffd4a | Michael S. Tsirkin | |
534 | 41cb62c2 | Michael S. Tsirkin | if (datamatch) {
|
535 | 41cb62c2 | Michael S. Tsirkin | iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; |
536 | 41cb62c2 | Michael S. Tsirkin | } |
537 | 500ffd4a | Michael S. Tsirkin | if (!assign) {
|
538 | 500ffd4a | Michael S. Tsirkin | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
539 | 500ffd4a | Michael S. Tsirkin | } |
540 | 500ffd4a | Michael S. Tsirkin | |
541 | 500ffd4a | Michael S. Tsirkin | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
542 | 500ffd4a | Michael S. Tsirkin | |
543 | 500ffd4a | Michael S. Tsirkin | if (ret < 0) { |
544 | 500ffd4a | Michael S. Tsirkin | return -errno;
|
545 | 500ffd4a | Michael S. Tsirkin | } |
546 | 500ffd4a | Michael S. Tsirkin | |
547 | 500ffd4a | Michael S. Tsirkin | return 0; |
548 | 500ffd4a | Michael S. Tsirkin | } |
549 | 500ffd4a | Michael S. Tsirkin | |
550 | 44c3f8f7 | Michael S. Tsirkin | static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val, |
551 | 41cb62c2 | Michael S. Tsirkin | bool assign, uint32_t size, bool datamatch) |
552 | 500ffd4a | Michael S. Tsirkin | { |
553 | 500ffd4a | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
554 | 41cb62c2 | Michael S. Tsirkin | .datamatch = datamatch ? val : 0,
|
555 | 500ffd4a | Michael S. Tsirkin | .addr = addr, |
556 | 41cb62c2 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_PIO, |
557 | 44c3f8f7 | Michael S. Tsirkin | .len = size, |
558 | 500ffd4a | Michael S. Tsirkin | .fd = fd, |
559 | 500ffd4a | Michael S. Tsirkin | }; |
560 | 500ffd4a | Michael S. Tsirkin | int r;
|
561 | 500ffd4a | Michael S. Tsirkin | if (!kvm_enabled()) {
|
562 | 500ffd4a | Michael S. Tsirkin | return -ENOSYS;
|
563 | 500ffd4a | Michael S. Tsirkin | } |
564 | 41cb62c2 | Michael S. Tsirkin | if (datamatch) {
|
565 | 41cb62c2 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; |
566 | 41cb62c2 | Michael S. Tsirkin | } |
567 | 500ffd4a | Michael S. Tsirkin | if (!assign) {
|
568 | 500ffd4a | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
569 | 500ffd4a | Michael S. Tsirkin | } |
570 | 500ffd4a | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
571 | 500ffd4a | Michael S. Tsirkin | if (r < 0) { |
572 | 500ffd4a | Michael S. Tsirkin | return r;
|
573 | 500ffd4a | Michael S. Tsirkin | } |
574 | 500ffd4a | Michael S. Tsirkin | return 0; |
575 | 500ffd4a | Michael S. Tsirkin | } |
576 | 500ffd4a | Michael S. Tsirkin | |
577 | 500ffd4a | Michael S. Tsirkin | |
578 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
579 | d2f2b8a7 | Stefan Hajnoczi | { |
580 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
581 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
582 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
583 | d0dcac83 | Stefan Hajnoczi | *
|
584 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
585 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
586 | d2f2b8a7 | Stefan Hajnoczi | */
|
587 | 12d4536f | Anthony Liguori | #if defined(CONFIG_EVENTFD)
|
588 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
589 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
590 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
591 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
592 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
593 | d2f2b8a7 | Stefan Hajnoczi | break;
|
594 | d2f2b8a7 | Stefan Hajnoczi | } |
595 | 41cb62c2 | Michael S. Tsirkin | ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true); |
596 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
597 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
598 | d2f2b8a7 | Stefan Hajnoczi | break;
|
599 | d2f2b8a7 | Stefan Hajnoczi | } |
600 | d2f2b8a7 | Stefan Hajnoczi | } |
601 | d2f2b8a7 | Stefan Hajnoczi | |
602 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
603 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
604 | d2f2b8a7 | Stefan Hajnoczi | |
605 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
606 | 41cb62c2 | Michael S. Tsirkin | kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true); |
607 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
608 | d2f2b8a7 | Stefan Hajnoczi | } |
609 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
610 | d2f2b8a7 | Stefan Hajnoczi | #else
|
611 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
612 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
613 | d2f2b8a7 | Stefan Hajnoczi | } |
614 | d2f2b8a7 | Stefan Hajnoczi | |
615 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
616 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
617 | 94a8d39a | Jan Kiszka | { |
618 | 94a8d39a | Jan Kiszka | while (list->name) {
|
619 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
620 | 94a8d39a | Jan Kiszka | return list;
|
621 | 94a8d39a | Jan Kiszka | } |
622 | 94a8d39a | Jan Kiszka | list++; |
623 | 94a8d39a | Jan Kiszka | } |
624 | 94a8d39a | Jan Kiszka | return NULL; |
625 | 94a8d39a | Jan Kiszka | } |
626 | 94a8d39a | Jan Kiszka | |
627 | a01672d3 | Avi Kivity | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
628 | 46dbef6a | Michael S. Tsirkin | { |
629 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
630 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
631 | 46dbef6a | Michael S. Tsirkin | int err;
|
632 | a01672d3 | Avi Kivity | MemoryRegion *mr = section->mr; |
633 | a01672d3 | Avi Kivity | bool log_dirty = memory_region_is_logging(mr);
|
634 | 235e8982 | Jordan Justen | bool writeable = !mr->readonly && !mr->rom_device;
|
635 | 235e8982 | Jordan Justen | bool readonly_flag = mr->readonly || memory_region_is_romd(mr);
|
636 | a8170e5e | Avi Kivity | hwaddr start_addr = section->offset_within_address_space; |
637 | a01672d3 | Avi Kivity | ram_addr_t size = section->size; |
638 | 9f213ed9 | Avi Kivity | void *ram = NULL; |
639 | 8f6f962b | Avi Kivity | unsigned delta;
|
640 | 46dbef6a | Michael S. Tsirkin | |
641 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
642 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
643 | 8f6f962b | Avi Kivity | delta = TARGET_PAGE_ALIGN(size) - size; |
644 | 8f6f962b | Avi Kivity | if (delta > size) {
|
645 | 8f6f962b | Avi Kivity | return;
|
646 | 8f6f962b | Avi Kivity | } |
647 | 8f6f962b | Avi Kivity | start_addr += delta; |
648 | 8f6f962b | Avi Kivity | size -= delta; |
649 | 8f6f962b | Avi Kivity | size &= TARGET_PAGE_MASK; |
650 | 8f6f962b | Avi Kivity | if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
|
651 | 8f6f962b | Avi Kivity | return;
|
652 | 8f6f962b | Avi Kivity | } |
653 | 46dbef6a | Michael S. Tsirkin | |
654 | a01672d3 | Avi Kivity | if (!memory_region_is_ram(mr)) {
|
655 | 235e8982 | Jordan Justen | if (writeable || !kvm_readonly_mem_allowed) {
|
656 | 235e8982 | Jordan Justen | return;
|
657 | 235e8982 | Jordan Justen | } else if (!mr->romd_mode) { |
658 | 235e8982 | Jordan Justen | /* If the memory device is not in romd_mode, then we actually want
|
659 | 235e8982 | Jordan Justen | * to remove the kvm memory slot so all accesses will trap. */
|
660 | 235e8982 | Jordan Justen | add = false;
|
661 | 235e8982 | Jordan Justen | } |
662 | 9f213ed9 | Avi Kivity | } |
663 | 9f213ed9 | Avi Kivity | |
664 | 8f6f962b | Avi Kivity | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
665 | a01672d3 | Avi Kivity | |
666 | 46dbef6a | Michael S. Tsirkin | while (1) { |
667 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
668 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
669 | 46dbef6a | Michael S. Tsirkin | break;
|
670 | 46dbef6a | Michael S. Tsirkin | } |
671 | 46dbef6a | Michael S. Tsirkin | |
672 | a01672d3 | Avi Kivity | if (add && start_addr >= mem->start_addr &&
|
673 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
674 | 9f213ed9 | Avi Kivity | (ram - start_addr == mem->ram - mem->start_addr)) { |
675 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
676 | 25254bbc | Michael S. Tsirkin | * identical parameters - update flags and done. */
|
677 | 25254bbc | Michael S. Tsirkin | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
678 | 46dbef6a | Michael S. Tsirkin | return;
|
679 | 46dbef6a | Michael S. Tsirkin | } |
680 | 46dbef6a | Michael S. Tsirkin | |
681 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
682 | 46dbef6a | Michael S. Tsirkin | |
683 | 3fbffb62 | Avi Kivity | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
|
684 | 3fbffb62 | Avi Kivity | kvm_physical_sync_dirty_bitmap(section); |
685 | 3fbffb62 | Avi Kivity | } |
686 | 3fbffb62 | Avi Kivity | |
687 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
688 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
689 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
690 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
691 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
692 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
693 | 46dbef6a | Michael S. Tsirkin | abort(); |
694 | 46dbef6a | Michael S. Tsirkin | } |
695 | 46dbef6a | Michael S. Tsirkin | |
696 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
697 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
698 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
699 | 46dbef6a | Michael S. Tsirkin | *
|
700 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
701 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
702 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
703 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
704 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
705 | a01672d3 | Avi Kivity | old.start_addr == start_addr && old.memory_size < size && add) { |
706 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
707 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
708 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
709 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
710 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
711 | 46dbef6a | Michael S. Tsirkin | |
712 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
713 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
714 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
715 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
716 | 46dbef6a | Michael S. Tsirkin | abort(); |
717 | 46dbef6a | Michael S. Tsirkin | } |
718 | 46dbef6a | Michael S. Tsirkin | |
719 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
720 | 9f213ed9 | Avi Kivity | ram += old.memory_size; |
721 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
722 | 46dbef6a | Michael S. Tsirkin | continue;
|
723 | 46dbef6a | Michael S. Tsirkin | } |
724 | 46dbef6a | Michael S. Tsirkin | |
725 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
726 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
727 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
728 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
729 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
730 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
731 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
732 | 46dbef6a | Michael S. Tsirkin | |
733 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
734 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
735 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
736 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
737 | d4d6868f | Alexander Graf | #ifdef TARGET_PPC
|
738 | d4d6868f | Alexander Graf | fprintf(stderr, "%s: This is probably because your kernel's " \
|
739 | d4d6868f | Alexander Graf | "PAGE_SIZE is too big. Please try to use 4k " \
|
740 | d4d6868f | Alexander Graf | "PAGE_SIZE!\n", __func__);
|
741 | d4d6868f | Alexander Graf | #endif
|
742 | 46dbef6a | Michael S. Tsirkin | abort(); |
743 | 46dbef6a | Michael S. Tsirkin | } |
744 | 46dbef6a | Michael S. Tsirkin | } |
745 | 46dbef6a | Michael S. Tsirkin | |
746 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
747 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
748 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
749 | 46dbef6a | Michael S. Tsirkin | |
750 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
751 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
752 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
753 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
754 | 9f213ed9 | Avi Kivity | mem->ram = old.ram + size_delta; |
755 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
756 | 46dbef6a | Michael S. Tsirkin | |
757 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
758 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
759 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
760 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
761 | 46dbef6a | Michael S. Tsirkin | abort(); |
762 | 46dbef6a | Michael S. Tsirkin | } |
763 | 46dbef6a | Michael S. Tsirkin | } |
764 | 46dbef6a | Michael S. Tsirkin | } |
765 | 46dbef6a | Michael S. Tsirkin | |
766 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
767 | a426e122 | Jan Kiszka | if (!size) {
|
768 | 46dbef6a | Michael S. Tsirkin | return;
|
769 | a426e122 | Jan Kiszka | } |
770 | a01672d3 | Avi Kivity | if (!add) {
|
771 | 46dbef6a | Michael S. Tsirkin | return;
|
772 | a426e122 | Jan Kiszka | } |
773 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
774 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
775 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
776 | 9f213ed9 | Avi Kivity | mem->ram = ram; |
777 | 235e8982 | Jordan Justen | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
778 | 46dbef6a | Michael S. Tsirkin | |
779 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
780 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
781 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
782 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
783 | 46dbef6a | Michael S. Tsirkin | abort(); |
784 | 46dbef6a | Michael S. Tsirkin | } |
785 | 46dbef6a | Michael S. Tsirkin | } |
786 | 46dbef6a | Michael S. Tsirkin | |
787 | a01672d3 | Avi Kivity | static void kvm_region_add(MemoryListener *listener, |
788 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
789 | a01672d3 | Avi Kivity | { |
790 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, true);
|
791 | a01672d3 | Avi Kivity | } |
792 | a01672d3 | Avi Kivity | |
793 | a01672d3 | Avi Kivity | static void kvm_region_del(MemoryListener *listener, |
794 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
795 | a01672d3 | Avi Kivity | { |
796 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, false);
|
797 | a01672d3 | Avi Kivity | } |
798 | a01672d3 | Avi Kivity | |
799 | a01672d3 | Avi Kivity | static void kvm_log_sync(MemoryListener *listener, |
800 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
801 | 7b8f3b78 | Michael S. Tsirkin | { |
802 | a01672d3 | Avi Kivity | int r;
|
803 | a01672d3 | Avi Kivity | |
804 | ffcde12f | Avi Kivity | r = kvm_physical_sync_dirty_bitmap(section); |
805 | a01672d3 | Avi Kivity | if (r < 0) { |
806 | a01672d3 | Avi Kivity | abort(); |
807 | a01672d3 | Avi Kivity | } |
808 | 7b8f3b78 | Michael S. Tsirkin | } |
809 | 7b8f3b78 | Michael S. Tsirkin | |
810 | a01672d3 | Avi Kivity | static void kvm_log_global_start(struct MemoryListener *listener) |
811 | 7b8f3b78 | Michael S. Tsirkin | { |
812 | a01672d3 | Avi Kivity | int r;
|
813 | a01672d3 | Avi Kivity | |
814 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(1);
|
815 | a01672d3 | Avi Kivity | assert(r >= 0);
|
816 | 7b8f3b78 | Michael S. Tsirkin | } |
817 | 7b8f3b78 | Michael S. Tsirkin | |
818 | a01672d3 | Avi Kivity | static void kvm_log_global_stop(struct MemoryListener *listener) |
819 | 7b8f3b78 | Michael S. Tsirkin | { |
820 | a01672d3 | Avi Kivity | int r;
|
821 | a01672d3 | Avi Kivity | |
822 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(0);
|
823 | a01672d3 | Avi Kivity | assert(r >= 0);
|
824 | 7b8f3b78 | Michael S. Tsirkin | } |
825 | 7b8f3b78 | Michael S. Tsirkin | |
826 | d22b096e | Avi Kivity | static void kvm_mem_ioeventfd_add(MemoryListener *listener, |
827 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
828 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
829 | d22b096e | Avi Kivity | EventNotifier *e) |
830 | d22b096e | Avi Kivity | { |
831 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
832 | 80a1ea37 | Avi Kivity | int r;
|
833 | 80a1ea37 | Avi Kivity | |
834 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
835 | 41cb62c2 | Michael S. Tsirkin | data, true, section->size, match_data);
|
836 | 80a1ea37 | Avi Kivity | if (r < 0) { |
837 | 80a1ea37 | Avi Kivity | abort(); |
838 | 80a1ea37 | Avi Kivity | } |
839 | 80a1ea37 | Avi Kivity | } |
840 | 80a1ea37 | Avi Kivity | |
841 | d22b096e | Avi Kivity | static void kvm_mem_ioeventfd_del(MemoryListener *listener, |
842 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
843 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
844 | d22b096e | Avi Kivity | EventNotifier *e) |
845 | 80a1ea37 | Avi Kivity | { |
846 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
847 | 80a1ea37 | Avi Kivity | int r;
|
848 | 80a1ea37 | Avi Kivity | |
849 | 4b8f1c88 | Michael S. Tsirkin | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
850 | 41cb62c2 | Michael S. Tsirkin | data, false, section->size, match_data);
|
851 | 80a1ea37 | Avi Kivity | if (r < 0) { |
852 | 80a1ea37 | Avi Kivity | abort(); |
853 | 80a1ea37 | Avi Kivity | } |
854 | 80a1ea37 | Avi Kivity | } |
855 | 80a1ea37 | Avi Kivity | |
856 | d22b096e | Avi Kivity | static void kvm_io_ioeventfd_add(MemoryListener *listener, |
857 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
858 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
859 | d22b096e | Avi Kivity | EventNotifier *e) |
860 | 80a1ea37 | Avi Kivity | { |
861 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
862 | 80a1ea37 | Avi Kivity | int r;
|
863 | 80a1ea37 | Avi Kivity | |
864 | 44c3f8f7 | Michael S. Tsirkin | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
865 | 41cb62c2 | Michael S. Tsirkin | data, true, section->size, match_data);
|
866 | 80a1ea37 | Avi Kivity | if (r < 0) { |
867 | 80a1ea37 | Avi Kivity | abort(); |
868 | 80a1ea37 | Avi Kivity | } |
869 | 80a1ea37 | Avi Kivity | } |
870 | 80a1ea37 | Avi Kivity | |
871 | d22b096e | Avi Kivity | static void kvm_io_ioeventfd_del(MemoryListener *listener, |
872 | d22b096e | Avi Kivity | MemoryRegionSection *section, |
873 | d22b096e | Avi Kivity | bool match_data, uint64_t data,
|
874 | d22b096e | Avi Kivity | EventNotifier *e) |
875 | 80a1ea37 | Avi Kivity | |
876 | 80a1ea37 | Avi Kivity | { |
877 | d22b096e | Avi Kivity | int fd = event_notifier_get_fd(e);
|
878 | 80a1ea37 | Avi Kivity | int r;
|
879 | 80a1ea37 | Avi Kivity | |
880 | 44c3f8f7 | Michael S. Tsirkin | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
881 | 41cb62c2 | Michael S. Tsirkin | data, false, section->size, match_data);
|
882 | 80a1ea37 | Avi Kivity | if (r < 0) { |
883 | 80a1ea37 | Avi Kivity | abort(); |
884 | 80a1ea37 | Avi Kivity | } |
885 | 80a1ea37 | Avi Kivity | } |
886 | 80a1ea37 | Avi Kivity | |
887 | a01672d3 | Avi Kivity | static MemoryListener kvm_memory_listener = {
|
888 | a01672d3 | Avi Kivity | .region_add = kvm_region_add, |
889 | a01672d3 | Avi Kivity | .region_del = kvm_region_del, |
890 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
891 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
892 | a01672d3 | Avi Kivity | .log_sync = kvm_log_sync, |
893 | a01672d3 | Avi Kivity | .log_global_start = kvm_log_global_start, |
894 | a01672d3 | Avi Kivity | .log_global_stop = kvm_log_global_stop, |
895 | d22b096e | Avi Kivity | .eventfd_add = kvm_mem_ioeventfd_add, |
896 | d22b096e | Avi Kivity | .eventfd_del = kvm_mem_ioeventfd_del, |
897 | 95d2994a | Avi Kivity | .coalesced_mmio_add = kvm_coalesce_mmio_region, |
898 | 95d2994a | Avi Kivity | .coalesced_mmio_del = kvm_uncoalesce_mmio_region, |
899 | d22b096e | Avi Kivity | .priority = 10,
|
900 | d22b096e | Avi Kivity | }; |
901 | d22b096e | Avi Kivity | |
902 | d22b096e | Avi Kivity | static MemoryListener kvm_io_listener = {
|
903 | d22b096e | Avi Kivity | .eventfd_add = kvm_io_ioeventfd_add, |
904 | d22b096e | Avi Kivity | .eventfd_del = kvm_io_ioeventfd_del, |
905 | 72e22d2f | Avi Kivity | .priority = 10,
|
906 | 7b8f3b78 | Michael S. Tsirkin | }; |
907 | 7b8f3b78 | Michael S. Tsirkin | |
908 | c3affe56 | Andreas Färber | static void kvm_handle_interrupt(CPUState *cpu, int mask) |
909 | aa7f74d1 | Jan Kiszka | { |
910 | 259186a7 | Andreas Färber | cpu->interrupt_request |= mask; |
911 | aa7f74d1 | Jan Kiszka | |
912 | 60e82579 | Andreas Färber | if (!qemu_cpu_is_self(cpu)) {
|
913 | c08d7424 | Andreas Färber | qemu_cpu_kick(cpu); |
914 | aa7f74d1 | Jan Kiszka | } |
915 | aa7f74d1 | Jan Kiszka | } |
916 | aa7f74d1 | Jan Kiszka | |
917 | 3889c3fa | Peter Maydell | int kvm_set_irq(KVMState *s, int irq, int level) |
918 | 84b058d7 | Jan Kiszka | { |
919 | 84b058d7 | Jan Kiszka | struct kvm_irq_level event;
|
920 | 84b058d7 | Jan Kiszka | int ret;
|
921 | 84b058d7 | Jan Kiszka | |
922 | 7ae26bd4 | Peter Maydell | assert(kvm_async_interrupts_enabled()); |
923 | 84b058d7 | Jan Kiszka | |
924 | 84b058d7 | Jan Kiszka | event.level = level; |
925 | 84b058d7 | Jan Kiszka | event.irq = irq; |
926 | e333cd69 | Jan Kiszka | ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event); |
927 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
928 | 3889c3fa | Peter Maydell | perror("kvm_set_irq");
|
929 | 84b058d7 | Jan Kiszka | abort(); |
930 | 84b058d7 | Jan Kiszka | } |
931 | 84b058d7 | Jan Kiszka | |
932 | e333cd69 | Jan Kiszka | return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
933 | 84b058d7 | Jan Kiszka | } |
934 | 84b058d7 | Jan Kiszka | |
935 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
936 | d3d3bef0 | Jan Kiszka | typedef struct KVMMSIRoute { |
937 | d3d3bef0 | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
938 | d3d3bef0 | Jan Kiszka | QTAILQ_ENTRY(KVMMSIRoute) entry; |
939 | d3d3bef0 | Jan Kiszka | } KVMMSIRoute; |
940 | d3d3bef0 | Jan Kiszka | |
941 | 84b058d7 | Jan Kiszka | static void set_gsi(KVMState *s, unsigned int gsi) |
942 | 84b058d7 | Jan Kiszka | { |
943 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
944 | 84b058d7 | Jan Kiszka | } |
945 | 84b058d7 | Jan Kiszka | |
946 | 04fa27f5 | Jan Kiszka | static void clear_gsi(KVMState *s, unsigned int gsi) |
947 | 04fa27f5 | Jan Kiszka | { |
948 | 04fa27f5 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32)); |
949 | 04fa27f5 | Jan Kiszka | } |
950 | 04fa27f5 | Jan Kiszka | |
951 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
952 | 84b058d7 | Jan Kiszka | { |
953 | 04fa27f5 | Jan Kiszka | int gsi_count, i;
|
954 | 84b058d7 | Jan Kiszka | |
955 | 84b058d7 | Jan Kiszka | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
956 | 84b058d7 | Jan Kiszka | if (gsi_count > 0) { |
957 | 84b058d7 | Jan Kiszka | unsigned int gsi_bits, i; |
958 | 84b058d7 | Jan Kiszka | |
959 | 84b058d7 | Jan Kiszka | /* Round up so we can search ints using ffs */
|
960 | bc8c6788 | Jason Baron | gsi_bits = ALIGN(gsi_count, 32);
|
961 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
|
962 | 4e2e4e63 | Jan Kiszka | s->gsi_count = gsi_count; |
963 | 84b058d7 | Jan Kiszka | |
964 | 84b058d7 | Jan Kiszka | /* Mark any over-allocated bits as already in use */
|
965 | 84b058d7 | Jan Kiszka | for (i = gsi_count; i < gsi_bits; i++) {
|
966 | 84b058d7 | Jan Kiszka | set_gsi(s, i); |
967 | 84b058d7 | Jan Kiszka | } |
968 | 84b058d7 | Jan Kiszka | } |
969 | 84b058d7 | Jan Kiszka | |
970 | 84b058d7 | Jan Kiszka | s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
|
971 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = 0;
|
972 | 84b058d7 | Jan Kiszka | |
973 | 4a3adebb | Jan Kiszka | if (!s->direct_msi) {
|
974 | 4a3adebb | Jan Kiszka | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { |
975 | 4a3adebb | Jan Kiszka | QTAILQ_INIT(&s->msi_hashtab[i]); |
976 | 4a3adebb | Jan Kiszka | } |
977 | 04fa27f5 | Jan Kiszka | } |
978 | 04fa27f5 | Jan Kiszka | |
979 | 84b058d7 | Jan Kiszka | kvm_arch_init_irq_routing(s); |
980 | 84b058d7 | Jan Kiszka | } |
981 | 84b058d7 | Jan Kiszka | |
982 | e7b20308 | Jan Kiszka | static void kvm_irqchip_commit_routes(KVMState *s) |
983 | e7b20308 | Jan Kiszka | { |
984 | e7b20308 | Jan Kiszka | int ret;
|
985 | e7b20308 | Jan Kiszka | |
986 | e7b20308 | Jan Kiszka | s->irq_routes->flags = 0;
|
987 | e7b20308 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); |
988 | e7b20308 | Jan Kiszka | assert(ret == 0);
|
989 | e7b20308 | Jan Kiszka | } |
990 | e7b20308 | Jan Kiszka | |
991 | 84b058d7 | Jan Kiszka | static void kvm_add_routing_entry(KVMState *s, |
992 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *entry)
|
993 | 84b058d7 | Jan Kiszka | { |
994 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *new;
|
995 | 84b058d7 | Jan Kiszka | int n, size;
|
996 | 84b058d7 | Jan Kiszka | |
997 | 84b058d7 | Jan Kiszka | if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
|
998 | 84b058d7 | Jan Kiszka | n = s->nr_allocated_irq_routes * 2;
|
999 | 84b058d7 | Jan Kiszka | if (n < 64) { |
1000 | 84b058d7 | Jan Kiszka | n = 64;
|
1001 | 84b058d7 | Jan Kiszka | } |
1002 | 84b058d7 | Jan Kiszka | size = sizeof(struct kvm_irq_routing); |
1003 | 84b058d7 | Jan Kiszka | size += n * sizeof(*new);
|
1004 | 84b058d7 | Jan Kiszka | s->irq_routes = g_realloc(s->irq_routes, size); |
1005 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = n; |
1006 | 84b058d7 | Jan Kiszka | } |
1007 | 84b058d7 | Jan Kiszka | n = s->irq_routes->nr++; |
1008 | 84b058d7 | Jan Kiszka | new = &s->irq_routes->entries[n]; |
1009 | 84b058d7 | Jan Kiszka | memset(new, 0, sizeof(*new)); |
1010 | 84b058d7 | Jan Kiszka | new->gsi = entry->gsi; |
1011 | 84b058d7 | Jan Kiszka | new->type = entry->type; |
1012 | 84b058d7 | Jan Kiszka | new->flags = entry->flags; |
1013 | 84b058d7 | Jan Kiszka | new->u = entry->u; |
1014 | 84b058d7 | Jan Kiszka | |
1015 | 84b058d7 | Jan Kiszka | set_gsi(s, entry->gsi); |
1016 | e7b20308 | Jan Kiszka | |
1017 | e7b20308 | Jan Kiszka | kvm_irqchip_commit_routes(s); |
1018 | 84b058d7 | Jan Kiszka | } |
1019 | 84b058d7 | Jan Kiszka | |
1020 | cc57407e | Jan Kiszka | static int kvm_update_routing_entry(KVMState *s, |
1021 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *new_entry)
|
1022 | cc57407e | Jan Kiszka | { |
1023 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry *entry;
|
1024 | cc57407e | Jan Kiszka | int n;
|
1025 | cc57407e | Jan Kiszka | |
1026 | cc57407e | Jan Kiszka | for (n = 0; n < s->irq_routes->nr; n++) { |
1027 | cc57407e | Jan Kiszka | entry = &s->irq_routes->entries[n]; |
1028 | cc57407e | Jan Kiszka | if (entry->gsi != new_entry->gsi) {
|
1029 | cc57407e | Jan Kiszka | continue;
|
1030 | cc57407e | Jan Kiszka | } |
1031 | cc57407e | Jan Kiszka | |
1032 | cc57407e | Jan Kiszka | entry->type = new_entry->type; |
1033 | cc57407e | Jan Kiszka | entry->flags = new_entry->flags; |
1034 | cc57407e | Jan Kiszka | entry->u = new_entry->u; |
1035 | cc57407e | Jan Kiszka | |
1036 | cc57407e | Jan Kiszka | kvm_irqchip_commit_routes(s); |
1037 | cc57407e | Jan Kiszka | |
1038 | cc57407e | Jan Kiszka | return 0; |
1039 | cc57407e | Jan Kiszka | } |
1040 | cc57407e | Jan Kiszka | |
1041 | cc57407e | Jan Kiszka | return -ESRCH;
|
1042 | cc57407e | Jan Kiszka | } |
1043 | cc57407e | Jan Kiszka | |
1044 | 1df186df | Jan Kiszka | void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin) |
1045 | 84b058d7 | Jan Kiszka | { |
1046 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry e;
|
1047 | 84b058d7 | Jan Kiszka | |
1048 | 4e2e4e63 | Jan Kiszka | assert(pin < s->gsi_count); |
1049 | 4e2e4e63 | Jan Kiszka | |
1050 | 84b058d7 | Jan Kiszka | e.gsi = irq; |
1051 | 84b058d7 | Jan Kiszka | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
1052 | 84b058d7 | Jan Kiszka | e.flags = 0;
|
1053 | 84b058d7 | Jan Kiszka | e.u.irqchip.irqchip = irqchip; |
1054 | 84b058d7 | Jan Kiszka | e.u.irqchip.pin = pin; |
1055 | 84b058d7 | Jan Kiszka | kvm_add_routing_entry(s, &e); |
1056 | 84b058d7 | Jan Kiszka | } |
1057 | 84b058d7 | Jan Kiszka | |
1058 | 1e2aa8be | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1059 | 04fa27f5 | Jan Kiszka | { |
1060 | 04fa27f5 | Jan Kiszka | struct kvm_irq_routing_entry *e;
|
1061 | 04fa27f5 | Jan Kiszka | int i;
|
1062 | 04fa27f5 | Jan Kiszka | |
1063 | 04fa27f5 | Jan Kiszka | for (i = 0; i < s->irq_routes->nr; i++) { |
1064 | 04fa27f5 | Jan Kiszka | e = &s->irq_routes->entries[i]; |
1065 | 04fa27f5 | Jan Kiszka | if (e->gsi == virq) {
|
1066 | 04fa27f5 | Jan Kiszka | s->irq_routes->nr--; |
1067 | 04fa27f5 | Jan Kiszka | *e = s->irq_routes->entries[s->irq_routes->nr]; |
1068 | 04fa27f5 | Jan Kiszka | } |
1069 | 04fa27f5 | Jan Kiszka | } |
1070 | 04fa27f5 | Jan Kiszka | clear_gsi(s, virq); |
1071 | 04fa27f5 | Jan Kiszka | } |
1072 | 04fa27f5 | Jan Kiszka | |
1073 | 04fa27f5 | Jan Kiszka | static unsigned int kvm_hash_msi(uint32_t data) |
1074 | 04fa27f5 | Jan Kiszka | { |
1075 | 04fa27f5 | Jan Kiszka | /* This is optimized for IA32 MSI layout. However, no other arch shall
|
1076 | 04fa27f5 | Jan Kiszka | * repeat the mistake of not providing a direct MSI injection API. */
|
1077 | 04fa27f5 | Jan Kiszka | return data & 0xff; |
1078 | 04fa27f5 | Jan Kiszka | } |
1079 | 04fa27f5 | Jan Kiszka | |
1080 | 04fa27f5 | Jan Kiszka | static void kvm_flush_dynamic_msi_routes(KVMState *s) |
1081 | 04fa27f5 | Jan Kiszka | { |
1082 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route, *next; |
1083 | 04fa27f5 | Jan Kiszka | unsigned int hash; |
1084 | 04fa27f5 | Jan Kiszka | |
1085 | 04fa27f5 | Jan Kiszka | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { |
1086 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { |
1087 | 04fa27f5 | Jan Kiszka | kvm_irqchip_release_virq(s, route->kroute.gsi); |
1088 | 04fa27f5 | Jan Kiszka | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); |
1089 | 04fa27f5 | Jan Kiszka | g_free(route); |
1090 | 04fa27f5 | Jan Kiszka | } |
1091 | 04fa27f5 | Jan Kiszka | } |
1092 | 04fa27f5 | Jan Kiszka | } |
1093 | 04fa27f5 | Jan Kiszka | |
1094 | 04fa27f5 | Jan Kiszka | static int kvm_irqchip_get_virq(KVMState *s) |
1095 | 04fa27f5 | Jan Kiszka | { |
1096 | 04fa27f5 | Jan Kiszka | uint32_t *word = s->used_gsi_bitmap; |
1097 | 04fa27f5 | Jan Kiszka | int max_words = ALIGN(s->gsi_count, 32) / 32; |
1098 | 04fa27f5 | Jan Kiszka | int i, bit;
|
1099 | 04fa27f5 | Jan Kiszka | bool retry = true; |
1100 | 04fa27f5 | Jan Kiszka | |
1101 | 04fa27f5 | Jan Kiszka | again:
|
1102 | 04fa27f5 | Jan Kiszka | /* Return the lowest unused GSI in the bitmap */
|
1103 | 04fa27f5 | Jan Kiszka | for (i = 0; i < max_words; i++) { |
1104 | 04fa27f5 | Jan Kiszka | bit = ffs(~word[i]); |
1105 | 04fa27f5 | Jan Kiszka | if (!bit) {
|
1106 | 04fa27f5 | Jan Kiszka | continue;
|
1107 | 04fa27f5 | Jan Kiszka | } |
1108 | 04fa27f5 | Jan Kiszka | |
1109 | 04fa27f5 | Jan Kiszka | return bit - 1 + i * 32; |
1110 | 04fa27f5 | Jan Kiszka | } |
1111 | 4a3adebb | Jan Kiszka | if (!s->direct_msi && retry) {
|
1112 | 04fa27f5 | Jan Kiszka | retry = false;
|
1113 | 04fa27f5 | Jan Kiszka | kvm_flush_dynamic_msi_routes(s); |
1114 | 04fa27f5 | Jan Kiszka | goto again;
|
1115 | 04fa27f5 | Jan Kiszka | } |
1116 | 04fa27f5 | Jan Kiszka | return -ENOSPC;
|
1117 | 04fa27f5 | Jan Kiszka | |
1118 | 04fa27f5 | Jan Kiszka | } |
1119 | 04fa27f5 | Jan Kiszka | |
1120 | 04fa27f5 | Jan Kiszka | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg)
|
1121 | 04fa27f5 | Jan Kiszka | { |
1122 | 04fa27f5 | Jan Kiszka | unsigned int hash = kvm_hash_msi(msg.data); |
1123 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1124 | 04fa27f5 | Jan Kiszka | |
1125 | 04fa27f5 | Jan Kiszka | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { |
1126 | 04fa27f5 | Jan Kiszka | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address &&
|
1127 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi == (msg.address >> 32) &&
|
1128 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.data == msg.data) { |
1129 | 04fa27f5 | Jan Kiszka | return route;
|
1130 | 04fa27f5 | Jan Kiszka | } |
1131 | 04fa27f5 | Jan Kiszka | } |
1132 | 04fa27f5 | Jan Kiszka | return NULL; |
1133 | 04fa27f5 | Jan Kiszka | } |
1134 | 04fa27f5 | Jan Kiszka | |
1135 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1136 | 04fa27f5 | Jan Kiszka | { |
1137 | 4a3adebb | Jan Kiszka | struct kvm_msi msi;
|
1138 | 04fa27f5 | Jan Kiszka | KVMMSIRoute *route; |
1139 | 04fa27f5 | Jan Kiszka | |
1140 | 4a3adebb | Jan Kiszka | if (s->direct_msi) {
|
1141 | 4a3adebb | Jan Kiszka | msi.address_lo = (uint32_t)msg.address; |
1142 | 4a3adebb | Jan Kiszka | msi.address_hi = msg.address >> 32;
|
1143 | 4a3adebb | Jan Kiszka | msi.data = msg.data; |
1144 | 4a3adebb | Jan Kiszka | msi.flags = 0;
|
1145 | 4a3adebb | Jan Kiszka | memset(msi.pad, 0, sizeof(msi.pad)); |
1146 | 4a3adebb | Jan Kiszka | |
1147 | 4a3adebb | Jan Kiszka | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi);
|
1148 | 4a3adebb | Jan Kiszka | } |
1149 | 4a3adebb | Jan Kiszka | |
1150 | 04fa27f5 | Jan Kiszka | route = kvm_lookup_msi_route(s, msg); |
1151 | 04fa27f5 | Jan Kiszka | if (!route) {
|
1152 | e7b20308 | Jan Kiszka | int virq;
|
1153 | 04fa27f5 | Jan Kiszka | |
1154 | 04fa27f5 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1155 | 04fa27f5 | Jan Kiszka | if (virq < 0) { |
1156 | 04fa27f5 | Jan Kiszka | return virq;
|
1157 | 04fa27f5 | Jan Kiszka | } |
1158 | 04fa27f5 | Jan Kiszka | |
1159 | 04fa27f5 | Jan Kiszka | route = g_malloc(sizeof(KVMMSIRoute));
|
1160 | 04fa27f5 | Jan Kiszka | route->kroute.gsi = virq; |
1161 | 04fa27f5 | Jan Kiszka | route->kroute.type = KVM_IRQ_ROUTING_MSI; |
1162 | 04fa27f5 | Jan Kiszka | route->kroute.flags = 0;
|
1163 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_lo = (uint32_t)msg.address; |
1164 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.address_hi = msg.address >> 32;
|
1165 | 04fa27f5 | Jan Kiszka | route->kroute.u.msi.data = msg.data; |
1166 | 04fa27f5 | Jan Kiszka | |
1167 | 04fa27f5 | Jan Kiszka | kvm_add_routing_entry(s, &route->kroute); |
1168 | 04fa27f5 | Jan Kiszka | |
1169 | 04fa27f5 | Jan Kiszka | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, |
1170 | 04fa27f5 | Jan Kiszka | entry); |
1171 | 04fa27f5 | Jan Kiszka | } |
1172 | 04fa27f5 | Jan Kiszka | |
1173 | 04fa27f5 | Jan Kiszka | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); |
1174 | 04fa27f5 | Jan Kiszka | |
1175 | 3889c3fa | Peter Maydell | return kvm_set_irq(s, route->kroute.gsi, 1); |
1176 | 04fa27f5 | Jan Kiszka | } |
1177 | 04fa27f5 | Jan Kiszka | |
1178 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1179 | 92b4e489 | Jan Kiszka | { |
1180 | 92b4e489 | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
1181 | 92b4e489 | Jan Kiszka | int virq;
|
1182 | 92b4e489 | Jan Kiszka | |
1183 | f3e1bed8 | Peter Maydell | if (!kvm_gsi_routing_enabled()) {
|
1184 | 92b4e489 | Jan Kiszka | return -ENOSYS;
|
1185 | 92b4e489 | Jan Kiszka | } |
1186 | 92b4e489 | Jan Kiszka | |
1187 | 92b4e489 | Jan Kiszka | virq = kvm_irqchip_get_virq(s); |
1188 | 92b4e489 | Jan Kiszka | if (virq < 0) { |
1189 | 92b4e489 | Jan Kiszka | return virq;
|
1190 | 92b4e489 | Jan Kiszka | } |
1191 | 92b4e489 | Jan Kiszka | |
1192 | 92b4e489 | Jan Kiszka | kroute.gsi = virq; |
1193 | 92b4e489 | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1194 | 92b4e489 | Jan Kiszka | kroute.flags = 0;
|
1195 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1196 | 92b4e489 | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1197 | 92b4e489 | Jan Kiszka | kroute.u.msi.data = msg.data; |
1198 | 92b4e489 | Jan Kiszka | |
1199 | 92b4e489 | Jan Kiszka | kvm_add_routing_entry(s, &kroute); |
1200 | 92b4e489 | Jan Kiszka | |
1201 | 92b4e489 | Jan Kiszka | return virq;
|
1202 | 92b4e489 | Jan Kiszka | } |
1203 | 92b4e489 | Jan Kiszka | |
1204 | cc57407e | Jan Kiszka | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1205 | cc57407e | Jan Kiszka | { |
1206 | cc57407e | Jan Kiszka | struct kvm_irq_routing_entry kroute;
|
1207 | cc57407e | Jan Kiszka | |
1208 | cc57407e | Jan Kiszka | if (!kvm_irqchip_in_kernel()) {
|
1209 | cc57407e | Jan Kiszka | return -ENOSYS;
|
1210 | cc57407e | Jan Kiszka | } |
1211 | cc57407e | Jan Kiszka | |
1212 | cc57407e | Jan Kiszka | kroute.gsi = virq; |
1213 | cc57407e | Jan Kiszka | kroute.type = KVM_IRQ_ROUTING_MSI; |
1214 | cc57407e | Jan Kiszka | kroute.flags = 0;
|
1215 | cc57407e | Jan Kiszka | kroute.u.msi.address_lo = (uint32_t)msg.address; |
1216 | cc57407e | Jan Kiszka | kroute.u.msi.address_hi = msg.address >> 32;
|
1217 | cc57407e | Jan Kiszka | kroute.u.msi.data = msg.data; |
1218 | cc57407e | Jan Kiszka | |
1219 | cc57407e | Jan Kiszka | return kvm_update_routing_entry(s, &kroute);
|
1220 | cc57407e | Jan Kiszka | } |
1221 | cc57407e | Jan Kiszka | |
1222 | 39853bbc | Jan Kiszka | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1223 | 39853bbc | Jan Kiszka | { |
1224 | 39853bbc | Jan Kiszka | struct kvm_irqfd irqfd = {
|
1225 | 39853bbc | Jan Kiszka | .fd = fd, |
1226 | 39853bbc | Jan Kiszka | .gsi = virq, |
1227 | 39853bbc | Jan Kiszka | .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN,
|
1228 | 39853bbc | Jan Kiszka | }; |
1229 | 39853bbc | Jan Kiszka | |
1230 | cc7e0ddf | Peter Maydell | if (!kvm_irqfds_enabled()) {
|
1231 | 39853bbc | Jan Kiszka | return -ENOSYS;
|
1232 | 39853bbc | Jan Kiszka | } |
1233 | 39853bbc | Jan Kiszka | |
1234 | 39853bbc | Jan Kiszka | return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd);
|
1235 | 39853bbc | Jan Kiszka | } |
1236 | 39853bbc | Jan Kiszka | |
1237 | 84b058d7 | Jan Kiszka | #else /* !KVM_CAP_IRQ_ROUTING */ |
1238 | 84b058d7 | Jan Kiszka | |
1239 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
1240 | 84b058d7 | Jan Kiszka | { |
1241 | 84b058d7 | Jan Kiszka | } |
1242 | 04fa27f5 | Jan Kiszka | |
1243 | d3d3bef0 | Jan Kiszka | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1244 | d3d3bef0 | Jan Kiszka | { |
1245 | d3d3bef0 | Jan Kiszka | } |
1246 | d3d3bef0 | Jan Kiszka | |
1247 | 04fa27f5 | Jan Kiszka | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
|
1248 | 04fa27f5 | Jan Kiszka | { |
1249 | 04fa27f5 | Jan Kiszka | abort(); |
1250 | 04fa27f5 | Jan Kiszka | } |
1251 | 92b4e489 | Jan Kiszka | |
1252 | 92b4e489 | Jan Kiszka | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
|
1253 | 92b4e489 | Jan Kiszka | { |
1254 | df410675 | Alex Williamson | return -ENOSYS;
|
1255 | 92b4e489 | Jan Kiszka | } |
1256 | 39853bbc | Jan Kiszka | |
1257 | 39853bbc | Jan Kiszka | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1258 | 39853bbc | Jan Kiszka | { |
1259 | 39853bbc | Jan Kiszka | abort(); |
1260 | 39853bbc | Jan Kiszka | } |
1261 | dabe3143 | Michael S. Tsirkin | |
1262 | dabe3143 | Michael S. Tsirkin | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1263 | dabe3143 | Michael S. Tsirkin | { |
1264 | dabe3143 | Michael S. Tsirkin | return -ENOSYS;
|
1265 | dabe3143 | Michael S. Tsirkin | } |
1266 | 84b058d7 | Jan Kiszka | #endif /* !KVM_CAP_IRQ_ROUTING */ |
1267 | 84b058d7 | Jan Kiszka | |
1268 | b131c74a | Jan Kiszka | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
1269 | 39853bbc | Jan Kiszka | { |
1270 | b131c74a | Jan Kiszka | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), virq, true); |
1271 | 39853bbc | Jan Kiszka | } |
1272 | 39853bbc | Jan Kiszka | |
1273 | b131c74a | Jan Kiszka | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
1274 | 15b2bd18 | Paolo Bonzini | { |
1275 | b131c74a | Jan Kiszka | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), virq, false); |
1276 | 15b2bd18 | Paolo Bonzini | } |
1277 | 15b2bd18 | Paolo Bonzini | |
1278 | 84b058d7 | Jan Kiszka | static int kvm_irqchip_create(KVMState *s) |
1279 | 84b058d7 | Jan Kiszka | { |
1280 | 84b058d7 | Jan Kiszka | QemuOptsList *list = qemu_find_opts("machine");
|
1281 | 84b058d7 | Jan Kiszka | int ret;
|
1282 | 84b058d7 | Jan Kiszka | |
1283 | 84b058d7 | Jan Kiszka | if (QTAILQ_EMPTY(&list->head) ||
|
1284 | 84b058d7 | Jan Kiszka | !qemu_opt_get_bool(QTAILQ_FIRST(&list->head), |
1285 | a24b9106 | Jan Kiszka | "kernel_irqchip", true) || |
1286 | 84b058d7 | Jan Kiszka | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
1287 | 84b058d7 | Jan Kiszka | return 0; |
1288 | 84b058d7 | Jan Kiszka | } |
1289 | 84b058d7 | Jan Kiszka | |
1290 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
1291 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1292 | 84b058d7 | Jan Kiszka | fprintf(stderr, "Create kernel irqchip failed\n");
|
1293 | 84b058d7 | Jan Kiszka | return ret;
|
1294 | 84b058d7 | Jan Kiszka | } |
1295 | 84b058d7 | Jan Kiszka | |
1296 | 3d4b2649 | Jan Kiszka | kvm_kernel_irqchip = true;
|
1297 | 7ae26bd4 | Peter Maydell | /* If we have an in-kernel IRQ chip then we must have asynchronous
|
1298 | 7ae26bd4 | Peter Maydell | * interrupt delivery (though the reverse is not necessarily true)
|
1299 | 7ae26bd4 | Peter Maydell | */
|
1300 | 7ae26bd4 | Peter Maydell | kvm_async_interrupts_allowed = true;
|
1301 | 84b058d7 | Jan Kiszka | |
1302 | 84b058d7 | Jan Kiszka | kvm_init_irq_routing(s); |
1303 | 84b058d7 | Jan Kiszka | |
1304 | 84b058d7 | Jan Kiszka | return 0; |
1305 | 84b058d7 | Jan Kiszka | } |
1306 | 84b058d7 | Jan Kiszka | |
1307 | 3ed444e9 | Dunrong Huang | static int kvm_max_vcpus(KVMState *s) |
1308 | 3ed444e9 | Dunrong Huang | { |
1309 | 3ed444e9 | Dunrong Huang | int ret;
|
1310 | 3ed444e9 | Dunrong Huang | |
1311 | 3ed444e9 | Dunrong Huang | /* Find number of supported CPUs using the recommended
|
1312 | 3ed444e9 | Dunrong Huang | * procedure from the kernel API documentation to cope with
|
1313 | 3ed444e9 | Dunrong Huang | * older kernels that may be missing capabilities.
|
1314 | 3ed444e9 | Dunrong Huang | */
|
1315 | 3ed444e9 | Dunrong Huang | ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS); |
1316 | 3ed444e9 | Dunrong Huang | if (ret) {
|
1317 | 3ed444e9 | Dunrong Huang | return ret;
|
1318 | 3ed444e9 | Dunrong Huang | } |
1319 | 3ed444e9 | Dunrong Huang | ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS); |
1320 | 3ed444e9 | Dunrong Huang | if (ret) {
|
1321 | 3ed444e9 | Dunrong Huang | return ret;
|
1322 | 3ed444e9 | Dunrong Huang | } |
1323 | 3ed444e9 | Dunrong Huang | |
1324 | 3ed444e9 | Dunrong Huang | return 4; |
1325 | 3ed444e9 | Dunrong Huang | } |
1326 | 3ed444e9 | Dunrong Huang | |
1327 | cad1e282 | Jan Kiszka | int kvm_init(void) |
1328 | 05330448 | aliguori | { |
1329 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
1330 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
1331 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
1332 | 05330448 | aliguori | KVMState *s; |
1333 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
1334 | 05330448 | aliguori | int ret;
|
1335 | 05330448 | aliguori | int i;
|
1336 | 3ed444e9 | Dunrong Huang | int max_vcpus;
|
1337 | 05330448 | aliguori | |
1338 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(KVMState));
|
1339 | 05330448 | aliguori | |
1340 | 3145fcb6 | David Gibson | /*
|
1341 | 3145fcb6 | David Gibson | * On systems where the kernel can support different base page
|
1342 | 3145fcb6 | David Gibson | * sizes, host page size may be different from TARGET_PAGE_SIZE,
|
1343 | 3145fcb6 | David Gibson | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum
|
1344 | 3145fcb6 | David Gibson | * page size for the system though.
|
1345 | 3145fcb6 | David Gibson | */
|
1346 | 3145fcb6 | David Gibson | assert(TARGET_PAGE_SIZE <= getpagesize()); |
1347 | 3145fcb6 | David Gibson | |
1348 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1349 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
1350 | e22a25c9 | aliguori | #endif
|
1351 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
1352 | 05330448 | aliguori | s->slots[i].slot = i; |
1353 | a426e122 | Jan Kiszka | } |
1354 | 05330448 | aliguori | s->vmfd = -1;
|
1355 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
1356 | 05330448 | aliguori | if (s->fd == -1) { |
1357 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
1358 | 05330448 | aliguori | ret = -errno; |
1359 | 05330448 | aliguori | goto err;
|
1360 | 05330448 | aliguori | } |
1361 | 05330448 | aliguori | |
1362 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
1363 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
1364 | a426e122 | Jan Kiszka | if (ret > 0) { |
1365 | 05330448 | aliguori | ret = -EINVAL; |
1366 | a426e122 | Jan Kiszka | } |
1367 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
1368 | 05330448 | aliguori | goto err;
|
1369 | 05330448 | aliguori | } |
1370 | 05330448 | aliguori | |
1371 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
1372 | 05330448 | aliguori | ret = -EINVAL; |
1373 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
1374 | 05330448 | aliguori | goto err;
|
1375 | 05330448 | aliguori | } |
1376 | 05330448 | aliguori | |
1377 | 3ed444e9 | Dunrong Huang | max_vcpus = kvm_max_vcpus(s); |
1378 | 3ed444e9 | Dunrong Huang | if (smp_cpus > max_vcpus) {
|
1379 | 3ed444e9 | Dunrong Huang | ret = -EINVAL; |
1380 | 3ed444e9 | Dunrong Huang | fprintf(stderr, "Number of SMP cpus requested (%d) exceeds max cpus "
|
1381 | 3ed444e9 | Dunrong Huang | "supported by KVM (%d)\n", smp_cpus, max_vcpus);
|
1382 | 3ed444e9 | Dunrong Huang | goto err;
|
1383 | 3ed444e9 | Dunrong Huang | } |
1384 | 3ed444e9 | Dunrong Huang | |
1385 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
1386 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
1387 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
1388 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
1389 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
1390 | 0104dcac | Alexander Graf | #endif
|
1391 | db9eae1c | Xu He Jie | ret = s->vmfd; |
1392 | 05330448 | aliguori | goto err;
|
1393 | 0104dcac | Alexander Graf | } |
1394 | 05330448 | aliguori | |
1395 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1396 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
1397 | 94a8d39a | Jan Kiszka | missing_cap = |
1398 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
1399 | 05330448 | aliguori | } |
1400 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
1401 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
1402 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
1403 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
1404 | d85dc283 | aliguori | goto err;
|
1405 | d85dc283 | aliguori | } |
1406 | d85dc283 | aliguori | |
1407 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
1408 | f65ed4c1 | aliguori | |
1409 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
1410 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
1411 | e69917e2 | Jan Kiszka | if (ret > 0) { |
1412 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
1413 | e69917e2 | Jan Kiszka | } |
1414 | e69917e2 | Jan Kiszka | |
1415 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1416 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
1417 | a0fb002c | Jan Kiszka | #endif
|
1418 | a0fb002c | Jan Kiszka | |
1419 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
1420 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
1421 | b0b1d690 | Jan Kiszka | |
1422 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1423 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
1424 | ff44f1a3 | Jan Kiszka | #endif
|
1425 | ff44f1a3 | Jan Kiszka | |
1426 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
1427 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
1428 | f1665b21 | Sheng Yang | #endif
|
1429 | f1665b21 | Sheng Yang | |
1430 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
1431 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
1432 | f1665b21 | Sheng Yang | #endif
|
1433 | f1665b21 | Sheng Yang | |
1434 | 8a7c7393 | Jan Kiszka | #ifdef KVM_CAP_PIT_STATE2
|
1435 | 8a7c7393 | Jan Kiszka | s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); |
1436 | 8a7c7393 | Jan Kiszka | #endif
|
1437 | 8a7c7393 | Jan Kiszka | |
1438 | d3d3bef0 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
1439 | 4a3adebb | Jan Kiszka | s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0);
|
1440 | d3d3bef0 | Jan Kiszka | #endif
|
1441 | 4a3adebb | Jan Kiszka | |
1442 | 3ab73842 | Jan Kiszka | s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3); |
1443 | 3ab73842 | Jan Kiszka | |
1444 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE; |
1445 | 8732fbd2 | Peter Maydell | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
|
1446 | e333cd69 | Jan Kiszka | s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; |
1447 | 8732fbd2 | Peter Maydell | } |
1448 | 8732fbd2 | Peter Maydell | |
1449 | df9c8b75 | Jordan Justen | #ifdef KVM_CAP_READONLY_MEM
|
1450 | df9c8b75 | Jordan Justen | kvm_readonly_mem_allowed = |
1451 | df9c8b75 | Jordan Justen | (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
|
1452 | df9c8b75 | Jordan Justen | #endif
|
1453 | df9c8b75 | Jordan Justen | |
1454 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
1455 | a426e122 | Jan Kiszka | if (ret < 0) { |
1456 | 05330448 | aliguori | goto err;
|
1457 | a426e122 | Jan Kiszka | } |
1458 | 05330448 | aliguori | |
1459 | 84b058d7 | Jan Kiszka | ret = kvm_irqchip_create(s); |
1460 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1461 | 84b058d7 | Jan Kiszka | goto err;
|
1462 | 84b058d7 | Jan Kiszka | } |
1463 | 84b058d7 | Jan Kiszka | |
1464 | 05330448 | aliguori | kvm_state = s; |
1465 | f6790af6 | Avi Kivity | memory_listener_register(&kvm_memory_listener, &address_space_memory); |
1466 | f6790af6 | Avi Kivity | memory_listener_register(&kvm_io_listener, &address_space_io); |
1467 | 05330448 | aliguori | |
1468 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1469 | d2f2b8a7 | Stefan Hajnoczi | |
1470 | aa7f74d1 | Jan Kiszka | cpu_interrupt_handler = kvm_handle_interrupt; |
1471 | aa7f74d1 | Jan Kiszka | |
1472 | 05330448 | aliguori | return 0; |
1473 | 05330448 | aliguori | |
1474 | 05330448 | aliguori | err:
|
1475 | 6d1cc321 | Stefan Weil | if (s->vmfd >= 0) { |
1476 | 6d1cc321 | Stefan Weil | close(s->vmfd); |
1477 | 6d1cc321 | Stefan Weil | } |
1478 | 6d1cc321 | Stefan Weil | if (s->fd != -1) { |
1479 | 6d1cc321 | Stefan Weil | close(s->fd); |
1480 | 05330448 | aliguori | } |
1481 | 7267c094 | Anthony Liguori | g_free(s); |
1482 | 05330448 | aliguori | |
1483 | 05330448 | aliguori | return ret;
|
1484 | 05330448 | aliguori | } |
1485 | 05330448 | aliguori | |
1486 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1487 | b30e93e9 | Jan Kiszka | uint32_t count) |
1488 | 05330448 | aliguori | { |
1489 | 05330448 | aliguori | int i;
|
1490 | 05330448 | aliguori | uint8_t *ptr = data; |
1491 | 05330448 | aliguori | |
1492 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
1493 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
|
1494 | 05330448 | aliguori | switch (size) {
|
1495 | 05330448 | aliguori | case 1: |
1496 | afcea8cb | Blue Swirl | stb_p(ptr, cpu_inb(port)); |
1497 | 05330448 | aliguori | break;
|
1498 | 05330448 | aliguori | case 2: |
1499 | afcea8cb | Blue Swirl | stw_p(ptr, cpu_inw(port)); |
1500 | 05330448 | aliguori | break;
|
1501 | 05330448 | aliguori | case 4: |
1502 | afcea8cb | Blue Swirl | stl_p(ptr, cpu_inl(port)); |
1503 | 05330448 | aliguori | break;
|
1504 | 05330448 | aliguori | } |
1505 | 05330448 | aliguori | } else {
|
1506 | 05330448 | aliguori | switch (size) {
|
1507 | 05330448 | aliguori | case 1: |
1508 | afcea8cb | Blue Swirl | cpu_outb(port, ldub_p(ptr)); |
1509 | 05330448 | aliguori | break;
|
1510 | 05330448 | aliguori | case 2: |
1511 | afcea8cb | Blue Swirl | cpu_outw(port, lduw_p(ptr)); |
1512 | 05330448 | aliguori | break;
|
1513 | 05330448 | aliguori | case 4: |
1514 | afcea8cb | Blue Swirl | cpu_outl(port, ldl_p(ptr)); |
1515 | 05330448 | aliguori | break;
|
1516 | 05330448 | aliguori | } |
1517 | 05330448 | aliguori | } |
1518 | 05330448 | aliguori | |
1519 | 05330448 | aliguori | ptr += size; |
1520 | 05330448 | aliguori | } |
1521 | 05330448 | aliguori | } |
1522 | 05330448 | aliguori | |
1523 | 9349b4f9 | Andreas Färber | static int kvm_handle_internal_error(CPUArchState *env, struct kvm_run *run) |
1524 | 7c80eef8 | Marcelo Tosatti | { |
1525 | 20d695a9 | Andreas Färber | CPUState *cpu = ENV_GET_CPU(env); |
1526 | 20d695a9 | Andreas Färber | |
1527 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
1528 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
1529 | 7c80eef8 | Marcelo Tosatti | int i;
|
1530 | 7c80eef8 | Marcelo Tosatti | |
1531 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
1532 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
1533 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
1534 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
1535 | 7c80eef8 | Marcelo Tosatti | } |
1536 | bb44e0d1 | Jan Kiszka | } else {
|
1537 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
1538 | 7c80eef8 | Marcelo Tosatti | } |
1539 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
1540 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
1541 | 20d695a9 | Andreas Färber | if (!kvm_arch_stop_on_emulation_error(cpu)) {
|
1542 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1543 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
1544 | a426e122 | Jan Kiszka | } |
1545 | 7c80eef8 | Marcelo Tosatti | } |
1546 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
1547 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
1548 | 7c80eef8 | Marcelo Tosatti | */
|
1549 | 73aaec4a | Jan Kiszka | return -1; |
1550 | 7c80eef8 | Marcelo Tosatti | } |
1551 | 7c80eef8 | Marcelo Tosatti | |
1552 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
1553 | f65ed4c1 | aliguori | { |
1554 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
1555 | 1cae88b9 | Avi Kivity | |
1556 | 1cae88b9 | Avi Kivity | if (s->coalesced_flush_in_progress) {
|
1557 | 1cae88b9 | Avi Kivity | return;
|
1558 | 1cae88b9 | Avi Kivity | } |
1559 | 1cae88b9 | Avi Kivity | |
1560 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = true;
|
1561 | 1cae88b9 | Avi Kivity | |
1562 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
1563 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
1564 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
1565 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
1566 | f65ed4c1 | aliguori | |
1567 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
1568 | f65ed4c1 | aliguori | |
1569 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
1570 | 85199474 | Marcelo Tosatti | smp_wmb(); |
1571 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
1572 | f65ed4c1 | aliguori | } |
1573 | f65ed4c1 | aliguori | } |
1574 | 1cae88b9 | Avi Kivity | |
1575 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = false;
|
1576 | f65ed4c1 | aliguori | } |
1577 | f65ed4c1 | aliguori | |
1578 | 20d695a9 | Andreas Färber | static void do_kvm_cpu_synchronize_state(void *arg) |
1579 | 4c0960c0 | Avi Kivity | { |
1580 | 20d695a9 | Andreas Färber | CPUState *cpu = arg; |
1581 | 2705d56a | Jan Kiszka | |
1582 | 20d695a9 | Andreas Färber | if (!cpu->kvm_vcpu_dirty) {
|
1583 | 20d695a9 | Andreas Färber | kvm_arch_get_registers(cpu); |
1584 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = true;
|
1585 | 4c0960c0 | Avi Kivity | } |
1586 | 4c0960c0 | Avi Kivity | } |
1587 | 4c0960c0 | Avi Kivity | |
1588 | 9349b4f9 | Andreas Färber | void kvm_cpu_synchronize_state(CPUArchState *env)
|
1589 | 2705d56a | Jan Kiszka | { |
1590 | f100f0b3 | Andreas Färber | CPUState *cpu = ENV_GET_CPU(env); |
1591 | f100f0b3 | Andreas Färber | |
1592 | 20d695a9 | Andreas Färber | if (!cpu->kvm_vcpu_dirty) {
|
1593 | 20d695a9 | Andreas Färber | run_on_cpu(cpu, do_kvm_cpu_synchronize_state, cpu); |
1594 | a426e122 | Jan Kiszka | } |
1595 | 2705d56a | Jan Kiszka | } |
1596 | 2705d56a | Jan Kiszka | |
1597 | 3f24a58f | Igor Mammedov | void kvm_cpu_synchronize_post_reset(CPUState *cpu)
|
1598 | ea375f9a | Jan Kiszka | { |
1599 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE); |
1600 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1601 | ea375f9a | Jan Kiszka | } |
1602 | ea375f9a | Jan Kiszka | |
1603 | 3f24a58f | Igor Mammedov | void kvm_cpu_synchronize_post_init(CPUState *cpu)
|
1604 | ea375f9a | Jan Kiszka | { |
1605 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE); |
1606 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1607 | ea375f9a | Jan Kiszka | } |
1608 | ea375f9a | Jan Kiszka | |
1609 | 9349b4f9 | Andreas Färber | int kvm_cpu_exec(CPUArchState *env)
|
1610 | 05330448 | aliguori | { |
1611 | 20d695a9 | Andreas Färber | CPUState *cpu = ENV_GET_CPU(env); |
1612 | f7575c96 | Andreas Färber | struct kvm_run *run = cpu->kvm_run;
|
1613 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
1614 | 05330448 | aliguori | |
1615 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
1616 | 05330448 | aliguori | |
1617 | 20d695a9 | Andreas Färber | if (kvm_arch_process_async_events(cpu)) {
|
1618 | fcd7d003 | Andreas Färber | cpu->exit_request = 0;
|
1619 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
1620 | 9ccfac9e | Jan Kiszka | } |
1621 | 0af691d7 | Marcelo Tosatti | |
1622 | 9ccfac9e | Jan Kiszka | do {
|
1623 | 20d695a9 | Andreas Färber | if (cpu->kvm_vcpu_dirty) {
|
1624 | 20d695a9 | Andreas Färber | kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE); |
1625 | 20d695a9 | Andreas Färber | cpu->kvm_vcpu_dirty = false;
|
1626 | 4c0960c0 | Avi Kivity | } |
1627 | 4c0960c0 | Avi Kivity | |
1628 | 20d695a9 | Andreas Färber | kvm_arch_pre_run(cpu, run); |
1629 | fcd7d003 | Andreas Färber | if (cpu->exit_request) {
|
1630 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
1631 | 9ccfac9e | Jan Kiszka | /*
|
1632 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
1633 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
1634 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
1635 | 9ccfac9e | Jan Kiszka | */
|
1636 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
1637 | 9ccfac9e | Jan Kiszka | } |
1638 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
1639 | 9ccfac9e | Jan Kiszka | |
1640 | 1bc22652 | Andreas Färber | run_ret = kvm_vcpu_ioctl(cpu, KVM_RUN, 0);
|
1641 | 9ccfac9e | Jan Kiszka | |
1642 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
1643 | 20d695a9 | Andreas Färber | kvm_arch_post_run(cpu, run); |
1644 | 05330448 | aliguori | |
1645 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
1646 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
1647 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
1648 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1649 | dc77d341 | Jan Kiszka | break;
|
1650 | dc77d341 | Jan Kiszka | } |
1651 | 7b011fbc | Michael Ellerman | fprintf(stderr, "error: kvm run failed %s\n",
|
1652 | 7b011fbc | Michael Ellerman | strerror(-run_ret)); |
1653 | 05330448 | aliguori | abort(); |
1654 | 05330448 | aliguori | } |
1655 | 05330448 | aliguori | |
1656 | b76ac80a | Kazuya Saito | trace_kvm_run_exit(cpu->cpu_index, run->exit_reason); |
1657 | 05330448 | aliguori | switch (run->exit_reason) {
|
1658 | 05330448 | aliguori | case KVM_EXIT_IO:
|
1659 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
1660 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
1661 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
1662 | b30e93e9 | Jan Kiszka | run->io.direction, |
1663 | b30e93e9 | Jan Kiszka | run->io.size, |
1664 | b30e93e9 | Jan Kiszka | run->io.count); |
1665 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1666 | 05330448 | aliguori | break;
|
1667 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
1668 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
1669 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
1670 | 05330448 | aliguori | run->mmio.data, |
1671 | 05330448 | aliguori | run->mmio.len, |
1672 | 05330448 | aliguori | run->mmio.is_write); |
1673 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1674 | 05330448 | aliguori | break;
|
1675 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
1676 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
1677 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1678 | 05330448 | aliguori | break;
|
1679 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
1680 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
1681 | 05330448 | aliguori | qemu_system_reset_request(); |
1682 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1683 | 05330448 | aliguori | break;
|
1684 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
1685 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1686 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
1687 | 73aaec4a | Jan Kiszka | ret = -1;
|
1688 | 05330448 | aliguori | break;
|
1689 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
1690 | 73aaec4a | Jan Kiszka | ret = kvm_handle_internal_error(env, run); |
1691 | 7c80eef8 | Marcelo Tosatti | break;
|
1692 | 05330448 | aliguori | default:
|
1693 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
1694 | 20d695a9 | Andreas Färber | ret = kvm_arch_handle_exit(cpu, run); |
1695 | 05330448 | aliguori | break;
|
1696 | 05330448 | aliguori | } |
1697 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
1698 | 05330448 | aliguori | |
1699 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
1700 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1701 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_INTERNAL_ERROR); |
1702 | becfc390 | aliguori | } |
1703 | becfc390 | aliguori | |
1704 | fcd7d003 | Andreas Färber | cpu->exit_request = 0;
|
1705 | 05330448 | aliguori | return ret;
|
1706 | 05330448 | aliguori | } |
1707 | 05330448 | aliguori | |
1708 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1709 | 05330448 | aliguori | { |
1710 | 05330448 | aliguori | int ret;
|
1711 | 984b5181 | aliguori | void *arg;
|
1712 | 984b5181 | aliguori | va_list ap; |
1713 | 05330448 | aliguori | |
1714 | 984b5181 | aliguori | va_start(ap, type); |
1715 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1716 | 984b5181 | aliguori | va_end(ap); |
1717 | 984b5181 | aliguori | |
1718 | 9c775729 | Kazuya Saito | trace_kvm_ioctl(type, arg); |
1719 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1720 | a426e122 | Jan Kiszka | if (ret == -1) { |
1721 | 05330448 | aliguori | ret = -errno; |
1722 | a426e122 | Jan Kiszka | } |
1723 | 05330448 | aliguori | return ret;
|
1724 | 05330448 | aliguori | } |
1725 | 05330448 | aliguori | |
1726 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1727 | 05330448 | aliguori | { |
1728 | 05330448 | aliguori | int ret;
|
1729 | 984b5181 | aliguori | void *arg;
|
1730 | 984b5181 | aliguori | va_list ap; |
1731 | 984b5181 | aliguori | |
1732 | 984b5181 | aliguori | va_start(ap, type); |
1733 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1734 | 984b5181 | aliguori | va_end(ap); |
1735 | 05330448 | aliguori | |
1736 | 9c775729 | Kazuya Saito | trace_kvm_vm_ioctl(type, arg); |
1737 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1738 | a426e122 | Jan Kiszka | if (ret == -1) { |
1739 | 05330448 | aliguori | ret = -errno; |
1740 | a426e122 | Jan Kiszka | } |
1741 | 05330448 | aliguori | return ret;
|
1742 | 05330448 | aliguori | } |
1743 | 05330448 | aliguori | |
1744 | 1bc22652 | Andreas Färber | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...) |
1745 | 05330448 | aliguori | { |
1746 | 05330448 | aliguori | int ret;
|
1747 | 984b5181 | aliguori | void *arg;
|
1748 | 984b5181 | aliguori | va_list ap; |
1749 | 984b5181 | aliguori | |
1750 | 984b5181 | aliguori | va_start(ap, type); |
1751 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1752 | 984b5181 | aliguori | va_end(ap); |
1753 | 05330448 | aliguori | |
1754 | 9c775729 | Kazuya Saito | trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg); |
1755 | 8737c51c | Andreas Färber | ret = ioctl(cpu->kvm_fd, type, arg); |
1756 | a426e122 | Jan Kiszka | if (ret == -1) { |
1757 | 05330448 | aliguori | ret = -errno; |
1758 | a426e122 | Jan Kiszka | } |
1759 | 05330448 | aliguori | return ret;
|
1760 | 05330448 | aliguori | } |
1761 | bd322087 | aliguori | |
1762 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1763 | bd322087 | aliguori | { |
1764 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1765 | bd322087 | aliguori | } |
1766 | e22a25c9 | aliguori | |
1767 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1768 | a0fb002c | Jan Kiszka | { |
1769 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1770 | a0fb002c | Jan Kiszka | } |
1771 | a0fb002c | Jan Kiszka | |
1772 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1773 | b0b1d690 | Jan Kiszka | { |
1774 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1775 | b0b1d690 | Jan Kiszka | } |
1776 | b0b1d690 | Jan Kiszka | |
1777 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1778 | ff44f1a3 | Jan Kiszka | { |
1779 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1780 | ff44f1a3 | Jan Kiszka | } |
1781 | ff44f1a3 | Jan Kiszka | |
1782 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1783 | f1665b21 | Sheng Yang | { |
1784 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1785 | f1665b21 | Sheng Yang | } |
1786 | f1665b21 | Sheng Yang | |
1787 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1788 | f1665b21 | Sheng Yang | { |
1789 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1790 | f1665b21 | Sheng Yang | } |
1791 | f1665b21 | Sheng Yang | |
1792 | 8a7c7393 | Jan Kiszka | int kvm_has_pit_state2(void) |
1793 | 8a7c7393 | Jan Kiszka | { |
1794 | 8a7c7393 | Jan Kiszka | return kvm_state->pit_state2;
|
1795 | 8a7c7393 | Jan Kiszka | } |
1796 | 8a7c7393 | Jan Kiszka | |
1797 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1798 | d2f2b8a7 | Stefan Hajnoczi | { |
1799 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1800 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1801 | d2f2b8a7 | Stefan Hajnoczi | } |
1802 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1803 | d2f2b8a7 | Stefan Hajnoczi | } |
1804 | d2f2b8a7 | Stefan Hajnoczi | |
1805 | 84b058d7 | Jan Kiszka | int kvm_has_gsi_routing(void) |
1806 | 84b058d7 | Jan Kiszka | { |
1807 | a9c5eb0d | Alexander Graf | #ifdef KVM_CAP_IRQ_ROUTING
|
1808 | 84b058d7 | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
|
1809 | a9c5eb0d | Alexander Graf | #else
|
1810 | a9c5eb0d | Alexander Graf | return false; |
1811 | a9c5eb0d | Alexander Graf | #endif
|
1812 | 84b058d7 | Jan Kiszka | } |
1813 | 84b058d7 | Jan Kiszka | |
1814 | 3ab73842 | Jan Kiszka | int kvm_has_intx_set_mask(void) |
1815 | 3ab73842 | Jan Kiszka | { |
1816 | 3ab73842 | Jan Kiszka | return kvm_state->intx_set_mask;
|
1817 | 3ab73842 | Jan Kiszka | } |
1818 | 3ab73842 | Jan Kiszka | |
1819 | 6eebf958 | Paolo Bonzini | void *kvm_ram_alloc(ram_addr_t size)
|
1820 | fdec9918 | Christian Borntraeger | { |
1821 | fdec9918 | Christian Borntraeger | #ifdef TARGET_S390X
|
1822 | fdec9918 | Christian Borntraeger | void *mem;
|
1823 | fdec9918 | Christian Borntraeger | |
1824 | 6eebf958 | Paolo Bonzini | mem = kvm_arch_ram_alloc(size); |
1825 | fdec9918 | Christian Borntraeger | if (mem) {
|
1826 | fdec9918 | Christian Borntraeger | return mem;
|
1827 | fdec9918 | Christian Borntraeger | } |
1828 | fdec9918 | Christian Borntraeger | #endif
|
1829 | 6eebf958 | Paolo Bonzini | return qemu_anon_ram_alloc(size);
|
1830 | fdec9918 | Christian Borntraeger | } |
1831 | fdec9918 | Christian Borntraeger | |
1832 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1833 | 6f0437e8 | Jan Kiszka | { |
1834 | 62fe8331 | Christian Borntraeger | #ifdef CONFIG_VALGRIND_H
|
1835 | 62fe8331 | Christian Borntraeger | VALGRIND_MAKE_MEM_DEFINED(start, size); |
1836 | 62fe8331 | Christian Borntraeger | #endif
|
1837 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1838 | e78815a5 | Andreas Färber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1839 | 6f0437e8 | Jan Kiszka | |
1840 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1841 | e78815a5 | Andreas Färber | perror("qemu_madvise");
|
1842 | e78815a5 | Andreas Färber | fprintf(stderr, |
1843 | e78815a5 | Andreas Färber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1844 | 6f0437e8 | Jan Kiszka | exit(1);
|
1845 | 6f0437e8 | Jan Kiszka | } |
1846 | 6f0437e8 | Jan Kiszka | } |
1847 | 6f0437e8 | Jan Kiszka | } |
1848 | 6f0437e8 | Jan Kiszka | |
1849 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1850 | a60f24b5 | Andreas Färber | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu,
|
1851 | e22a25c9 | aliguori | target_ulong pc) |
1852 | e22a25c9 | aliguori | { |
1853 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1854 | e22a25c9 | aliguori | |
1855 | a60f24b5 | Andreas Färber | QTAILQ_FOREACH(bp, &cpu->kvm_state->kvm_sw_breakpoints, entry) { |
1856 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1857 | e22a25c9 | aliguori | return bp;
|
1858 | a426e122 | Jan Kiszka | } |
1859 | e22a25c9 | aliguori | } |
1860 | e22a25c9 | aliguori | return NULL; |
1861 | e22a25c9 | aliguori | } |
1862 | e22a25c9 | aliguori | |
1863 | a60f24b5 | Andreas Färber | int kvm_sw_breakpoints_active(CPUState *cpu)
|
1864 | e22a25c9 | aliguori | { |
1865 | a60f24b5 | Andreas Färber | return !QTAILQ_EMPTY(&cpu->kvm_state->kvm_sw_breakpoints);
|
1866 | e22a25c9 | aliguori | } |
1867 | e22a25c9 | aliguori | |
1868 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1869 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1870 | a60f24b5 | Andreas Färber | CPUState *cpu; |
1871 | 452e4751 | Glauber Costa | int err;
|
1872 | 452e4751 | Glauber Costa | }; |
1873 | 452e4751 | Glauber Costa | |
1874 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1875 | 452e4751 | Glauber Costa | { |
1876 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1877 | b3807725 | Jan Kiszka | |
1878 | a60f24b5 | Andreas Färber | dbg_data->err = kvm_vcpu_ioctl(dbg_data->cpu, KVM_SET_GUEST_DEBUG, |
1879 | a60f24b5 | Andreas Färber | &dbg_data->dbg); |
1880 | 452e4751 | Glauber Costa | } |
1881 | 452e4751 | Glauber Costa | |
1882 | 9349b4f9 | Andreas Färber | int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap) |
1883 | e22a25c9 | aliguori | { |
1884 | f100f0b3 | Andreas Färber | CPUState *cpu = ENV_GET_CPU(env); |
1885 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1886 | e22a25c9 | aliguori | |
1887 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1888 | e22a25c9 | aliguori | |
1889 | b0b1d690 | Jan Kiszka | if (env->singlestep_enabled) {
|
1890 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1891 | b0b1d690 | Jan Kiszka | } |
1892 | 20d695a9 | Andreas Färber | kvm_arch_update_guest_debug(cpu, &data.dbg); |
1893 | a60f24b5 | Andreas Färber | data.cpu = cpu; |
1894 | e22a25c9 | aliguori | |
1895 | f100f0b3 | Andreas Färber | run_on_cpu(cpu, kvm_invoke_set_guest_debug, &data); |
1896 | 452e4751 | Glauber Costa | return data.err;
|
1897 | e22a25c9 | aliguori | } |
1898 | e22a25c9 | aliguori | |
1899 | 9349b4f9 | Andreas Färber | int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
|
1900 | e22a25c9 | aliguori | target_ulong len, int type)
|
1901 | e22a25c9 | aliguori | { |
1902 | 20d695a9 | Andreas Färber | CPUState *current_cpu = ENV_GET_CPU(current_env); |
1903 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1904 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1905 | e22a25c9 | aliguori | int err;
|
1906 | e22a25c9 | aliguori | |
1907 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1908 | a60f24b5 | Andreas Färber | bp = kvm_find_sw_breakpoint(current_cpu, addr); |
1909 | e22a25c9 | aliguori | if (bp) {
|
1910 | e22a25c9 | aliguori | bp->use_count++; |
1911 | e22a25c9 | aliguori | return 0; |
1912 | e22a25c9 | aliguori | } |
1913 | e22a25c9 | aliguori | |
1914 | 7267c094 | Anthony Liguori | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
1915 | a426e122 | Jan Kiszka | if (!bp) {
|
1916 | e22a25c9 | aliguori | return -ENOMEM;
|
1917 | a426e122 | Jan Kiszka | } |
1918 | e22a25c9 | aliguori | |
1919 | e22a25c9 | aliguori | bp->pc = addr; |
1920 | e22a25c9 | aliguori | bp->use_count = 1;
|
1921 | 20d695a9 | Andreas Färber | err = kvm_arch_insert_sw_breakpoint(current_cpu, bp); |
1922 | e22a25c9 | aliguori | if (err) {
|
1923 | 7267c094 | Anthony Liguori | g_free(bp); |
1924 | e22a25c9 | aliguori | return err;
|
1925 | e22a25c9 | aliguori | } |
1926 | e22a25c9 | aliguori | |
1927 | a60f24b5 | Andreas Färber | QTAILQ_INSERT_HEAD(¤t_cpu->kvm_state->kvm_sw_breakpoints, |
1928 | e22a25c9 | aliguori | bp, entry); |
1929 | e22a25c9 | aliguori | } else {
|
1930 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1931 | a426e122 | Jan Kiszka | if (err) {
|
1932 | e22a25c9 | aliguori | return err;
|
1933 | a426e122 | Jan Kiszka | } |
1934 | e22a25c9 | aliguori | } |
1935 | e22a25c9 | aliguori | |
1936 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1937 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1938 | a426e122 | Jan Kiszka | if (err) {
|
1939 | e22a25c9 | aliguori | return err;
|
1940 | a426e122 | Jan Kiszka | } |
1941 | e22a25c9 | aliguori | } |
1942 | e22a25c9 | aliguori | return 0; |
1943 | e22a25c9 | aliguori | } |
1944 | e22a25c9 | aliguori | |
1945 | 9349b4f9 | Andreas Färber | int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
|
1946 | e22a25c9 | aliguori | target_ulong len, int type)
|
1947 | e22a25c9 | aliguori | { |
1948 | 20d695a9 | Andreas Färber | CPUState *current_cpu = ENV_GET_CPU(current_env); |
1949 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1950 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1951 | e22a25c9 | aliguori | int err;
|
1952 | e22a25c9 | aliguori | |
1953 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1954 | a60f24b5 | Andreas Färber | bp = kvm_find_sw_breakpoint(current_cpu, addr); |
1955 | a426e122 | Jan Kiszka | if (!bp) {
|
1956 | e22a25c9 | aliguori | return -ENOENT;
|
1957 | a426e122 | Jan Kiszka | } |
1958 | e22a25c9 | aliguori | |
1959 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1960 | e22a25c9 | aliguori | bp->use_count--; |
1961 | e22a25c9 | aliguori | return 0; |
1962 | e22a25c9 | aliguori | } |
1963 | e22a25c9 | aliguori | |
1964 | 20d695a9 | Andreas Färber | err = kvm_arch_remove_sw_breakpoint(current_cpu, bp); |
1965 | a426e122 | Jan Kiszka | if (err) {
|
1966 | e22a25c9 | aliguori | return err;
|
1967 | a426e122 | Jan Kiszka | } |
1968 | e22a25c9 | aliguori | |
1969 | a60f24b5 | Andreas Färber | QTAILQ_REMOVE(¤t_cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
1970 | 7267c094 | Anthony Liguori | g_free(bp); |
1971 | e22a25c9 | aliguori | } else {
|
1972 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1973 | a426e122 | Jan Kiszka | if (err) {
|
1974 | e22a25c9 | aliguori | return err;
|
1975 | a426e122 | Jan Kiszka | } |
1976 | e22a25c9 | aliguori | } |
1977 | e22a25c9 | aliguori | |
1978 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1979 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1980 | a426e122 | Jan Kiszka | if (err) {
|
1981 | e22a25c9 | aliguori | return err;
|
1982 | a426e122 | Jan Kiszka | } |
1983 | e22a25c9 | aliguori | } |
1984 | e22a25c9 | aliguori | return 0; |
1985 | e22a25c9 | aliguori | } |
1986 | e22a25c9 | aliguori | |
1987 | 9349b4f9 | Andreas Färber | void kvm_remove_all_breakpoints(CPUArchState *current_env)
|
1988 | e22a25c9 | aliguori | { |
1989 | 20d695a9 | Andreas Färber | CPUState *current_cpu = ENV_GET_CPU(current_env); |
1990 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1991 | a60f24b5 | Andreas Färber | KVMState *s = current_cpu->kvm_state; |
1992 | 9349b4f9 | Andreas Färber | CPUArchState *env; |
1993 | 20d695a9 | Andreas Färber | CPUState *cpu; |
1994 | e22a25c9 | aliguori | |
1995 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1996 | 20d695a9 | Andreas Färber | if (kvm_arch_remove_sw_breakpoint(current_cpu, bp) != 0) { |
1997 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1998 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1999 | 20d695a9 | Andreas Färber | cpu = ENV_GET_CPU(env); |
2000 | 20d695a9 | Andreas Färber | if (kvm_arch_remove_sw_breakpoint(cpu, bp) == 0) { |
2001 | e22a25c9 | aliguori | break;
|
2002 | a426e122 | Jan Kiszka | } |
2003 | e22a25c9 | aliguori | } |
2004 | e22a25c9 | aliguori | } |
2005 | 78021d6d | Jan Kiszka | QTAILQ_REMOVE(&s->kvm_sw_breakpoints, bp, entry); |
2006 | 78021d6d | Jan Kiszka | g_free(bp); |
2007 | e22a25c9 | aliguori | } |
2008 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
2009 | e22a25c9 | aliguori | |
2010 | a426e122 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
2011 | e22a25c9 | aliguori | kvm_update_guest_debug(env, 0);
|
2012 | a426e122 | Jan Kiszka | } |
2013 | e22a25c9 | aliguori | } |
2014 | e22a25c9 | aliguori | |
2015 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
2016 | e22a25c9 | aliguori | |
2017 | 9349b4f9 | Andreas Färber | int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap) |
2018 | e22a25c9 | aliguori | { |
2019 | e22a25c9 | aliguori | return -EINVAL;
|
2020 | e22a25c9 | aliguori | } |
2021 | e22a25c9 | aliguori | |
2022 | 9349b4f9 | Andreas Färber | int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
|
2023 | e22a25c9 | aliguori | target_ulong len, int type)
|
2024 | e22a25c9 | aliguori | { |
2025 | e22a25c9 | aliguori | return -EINVAL;
|
2026 | e22a25c9 | aliguori | } |
2027 | e22a25c9 | aliguori | |
2028 | 9349b4f9 | Andreas Färber | int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
|
2029 | e22a25c9 | aliguori | target_ulong len, int type)
|
2030 | e22a25c9 | aliguori | { |
2031 | e22a25c9 | aliguori | return -EINVAL;
|
2032 | e22a25c9 | aliguori | } |
2033 | e22a25c9 | aliguori | |
2034 | 9349b4f9 | Andreas Färber | void kvm_remove_all_breakpoints(CPUArchState *current_env)
|
2035 | e22a25c9 | aliguori | { |
2036 | e22a25c9 | aliguori | } |
2037 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
2038 | cc84de95 | Marcelo Tosatti | |
2039 | 9349b4f9 | Andreas Färber | int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset) |
2040 | cc84de95 | Marcelo Tosatti | { |
2041 | 1bc22652 | Andreas Färber | CPUState *cpu = ENV_GET_CPU(env); |
2042 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
2043 | cc84de95 | Marcelo Tosatti | int r;
|
2044 | cc84de95 | Marcelo Tosatti | |
2045 | a426e122 | Jan Kiszka | if (!sigset) {
|
2046 | 1bc22652 | Andreas Färber | return kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, NULL); |
2047 | a426e122 | Jan Kiszka | } |
2048 | cc84de95 | Marcelo Tosatti | |
2049 | 7267c094 | Anthony Liguori | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
2050 | cc84de95 | Marcelo Tosatti | |
2051 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
2052 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
2053 | 1bc22652 | Andreas Färber | r = kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, sigmask); |
2054 | 7267c094 | Anthony Liguori | g_free(sigmask); |
2055 | cc84de95 | Marcelo Tosatti | |
2056 | cc84de95 | Marcelo Tosatti | return r;
|
2057 | cc84de95 | Marcelo Tosatti | } |
2058 | 290adf38 | Andreas Färber | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
2059 | a1b87fe0 | Jan Kiszka | { |
2060 | 20d695a9 | Andreas Färber | return kvm_arch_on_sigbus_vcpu(cpu, code, addr);
|
2061 | a1b87fe0 | Jan Kiszka | } |
2062 | a1b87fe0 | Jan Kiszka | |
2063 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
2064 | a1b87fe0 | Jan Kiszka | { |
2065 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
2066 | a1b87fe0 | Jan Kiszka | } |