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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 | 05330448 | aliguori | #include "sysemu.h" |
25 | 05330448 | aliguori | #include "kvm.h" |
26 | 05330448 | aliguori | |
27 | 05330448 | aliguori | //#define DEBUG_KVM
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28 | 05330448 | aliguori | |
29 | 05330448 | aliguori | #ifdef DEBUG_KVM
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30 | 05330448 | aliguori | #define dprintf(fmt, ...) \
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31 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
32 | 05330448 | aliguori | #else
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33 | 05330448 | aliguori | #define dprintf(fmt, ...) \
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34 | 05330448 | aliguori | do { } while (0) |
35 | 05330448 | aliguori | #endif
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36 | 05330448 | aliguori | |
37 | 34fc643f | aliguori | typedef struct KVMSlot |
38 | 34fc643f | aliguori | { |
39 | 34fc643f | aliguori | target_phys_addr_t start_addr; |
40 | 34fc643f | aliguori | ram_addr_t memory_size; |
41 | 34fc643f | aliguori | ram_addr_t phys_offset; |
42 | 34fc643f | aliguori | int slot;
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43 | 34fc643f | aliguori | int flags;
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44 | 34fc643f | aliguori | } KVMSlot; |
45 | 05330448 | aliguori | |
46 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
47 | 5832d1f2 | aliguori | |
48 | 05330448 | aliguori | int kvm_allowed = 0; |
49 | 05330448 | aliguori | |
50 | 05330448 | aliguori | struct KVMState
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51 | 05330448 | aliguori | { |
52 | 05330448 | aliguori | KVMSlot slots[32];
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53 | 05330448 | aliguori | int fd;
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54 | 05330448 | aliguori | int vmfd;
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55 | 05330448 | aliguori | }; |
56 | 05330448 | aliguori | |
57 | 05330448 | aliguori | static KVMState *kvm_state;
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58 | 05330448 | aliguori | |
59 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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60 | 05330448 | aliguori | { |
61 | 05330448 | aliguori | int i;
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62 | 05330448 | aliguori | |
63 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
64 | 62d60e8c | aliguori | /* KVM private memory slots */
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65 | 62d60e8c | aliguori | if (i >= 8 && i < 12) |
66 | 62d60e8c | aliguori | continue;
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67 | 05330448 | aliguori | if (s->slots[i].memory_size == 0) |
68 | 05330448 | aliguori | return &s->slots[i];
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69 | 05330448 | aliguori | } |
70 | 05330448 | aliguori | |
71 | 05330448 | aliguori | return NULL; |
72 | 05330448 | aliguori | } |
73 | 05330448 | aliguori | |
74 | 05330448 | aliguori | static KVMSlot *kvm_lookup_slot(KVMState *s, target_phys_addr_t start_addr)
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75 | 05330448 | aliguori | { |
76 | 05330448 | aliguori | int i;
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77 | 05330448 | aliguori | |
78 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
79 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
80 | 05330448 | aliguori | |
81 | 34fc643f | aliguori | if (start_addr >= mem->start_addr &&
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82 | 34fc643f | aliguori | start_addr < (mem->start_addr + mem->memory_size)) |
83 | 05330448 | aliguori | return mem;
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84 | 05330448 | aliguori | } |
85 | 05330448 | aliguori | |
86 | 05330448 | aliguori | return NULL; |
87 | 05330448 | aliguori | } |
88 | 05330448 | aliguori | |
89 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
90 | 5832d1f2 | aliguori | { |
91 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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92 | 5832d1f2 | aliguori | |
93 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
94 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
95 | 5832d1f2 | aliguori | mem.memory_size = slot->memory_size; |
96 | 5832d1f2 | aliguori | mem.userspace_addr = (unsigned long)phys_ram_base + slot->phys_offset; |
97 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
98 | 5832d1f2 | aliguori | |
99 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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100 | 5832d1f2 | aliguori | } |
101 | 5832d1f2 | aliguori | |
102 | 5832d1f2 | aliguori | |
103 | 05330448 | aliguori | int kvm_init_vcpu(CPUState *env)
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104 | 05330448 | aliguori | { |
105 | 05330448 | aliguori | KVMState *s = kvm_state; |
106 | 05330448 | aliguori | long mmap_size;
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107 | 05330448 | aliguori | int ret;
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108 | 05330448 | aliguori | |
109 | 05330448 | aliguori | dprintf("kvm_init_vcpu\n");
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110 | 05330448 | aliguori | |
111 | 984b5181 | aliguori | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
112 | 05330448 | aliguori | if (ret < 0) { |
113 | 05330448 | aliguori | dprintf("kvm_create_vcpu failed\n");
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114 | 05330448 | aliguori | goto err;
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115 | 05330448 | aliguori | } |
116 | 05330448 | aliguori | |
117 | 05330448 | aliguori | env->kvm_fd = ret; |
118 | 05330448 | aliguori | env->kvm_state = s; |
119 | 05330448 | aliguori | |
120 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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121 | 05330448 | aliguori | if (mmap_size < 0) { |
122 | 05330448 | aliguori | dprintf("KVM_GET_VCPU_MMAP_SIZE failed\n");
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123 | 05330448 | aliguori | goto err;
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124 | 05330448 | aliguori | } |
125 | 05330448 | aliguori | |
126 | 05330448 | aliguori | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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127 | 05330448 | aliguori | env->kvm_fd, 0);
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128 | 05330448 | aliguori | if (env->kvm_run == MAP_FAILED) {
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129 | 05330448 | aliguori | ret = -errno; |
130 | 05330448 | aliguori | dprintf("mmap'ing vcpu state failed\n");
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131 | 05330448 | aliguori | goto err;
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132 | 05330448 | aliguori | } |
133 | 05330448 | aliguori | |
134 | 05330448 | aliguori | ret = kvm_arch_init_vcpu(env); |
135 | 05330448 | aliguori | |
136 | 05330448 | aliguori | err:
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137 | 05330448 | aliguori | return ret;
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138 | 05330448 | aliguori | } |
139 | 05330448 | aliguori | |
140 | 5832d1f2 | aliguori | /*
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141 | 5832d1f2 | aliguori | * dirty pages logging control
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142 | 5832d1f2 | aliguori | */
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143 | 5832d1f2 | aliguori | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, target_phys_addr_t end_addr, |
144 | 5832d1f2 | aliguori | unsigned flags,
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145 | 5832d1f2 | aliguori | unsigned mask)
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146 | 5832d1f2 | aliguori | { |
147 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
148 | 5832d1f2 | aliguori | KVMSlot *mem = kvm_lookup_slot(s, phys_addr); |
149 | 5832d1f2 | aliguori | if (mem == NULL) { |
150 | 5832d1f2 | aliguori | dprintf("invalid parameters %llx-%llx\n", phys_addr, end_addr);
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151 | 5832d1f2 | aliguori | return -EINVAL;
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152 | 5832d1f2 | aliguori | } |
153 | 5832d1f2 | aliguori | |
154 | 5832d1f2 | aliguori | flags = (mem->flags & ~mask) | flags; |
155 | 5832d1f2 | aliguori | /* Nothing changed, no need to issue ioctl */
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156 | 5832d1f2 | aliguori | if (flags == mem->flags)
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157 | 5832d1f2 | aliguori | return 0; |
158 | 5832d1f2 | aliguori | |
159 | 5832d1f2 | aliguori | mem->flags = flags; |
160 | 5832d1f2 | aliguori | |
161 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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162 | 5832d1f2 | aliguori | } |
163 | 5832d1f2 | aliguori | |
164 | 5832d1f2 | aliguori | int kvm_log_start(target_phys_addr_t phys_addr, target_phys_addr_t end_addr)
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165 | 5832d1f2 | aliguori | { |
166 | 5832d1f2 | aliguori | return kvm_dirty_pages_log_change(phys_addr, end_addr,
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167 | 5832d1f2 | aliguori | KVM_MEM_LOG_DIRTY_PAGES, |
168 | 5832d1f2 | aliguori | KVM_MEM_LOG_DIRTY_PAGES); |
169 | 5832d1f2 | aliguori | } |
170 | 5832d1f2 | aliguori | |
171 | 5832d1f2 | aliguori | int kvm_log_stop(target_phys_addr_t phys_addr, target_phys_addr_t end_addr)
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172 | 5832d1f2 | aliguori | { |
173 | 5832d1f2 | aliguori | return kvm_dirty_pages_log_change(phys_addr, end_addr,
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174 | 5832d1f2 | aliguori | 0,
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175 | 5832d1f2 | aliguori | KVM_MEM_LOG_DIRTY_PAGES); |
176 | 5832d1f2 | aliguori | } |
177 | 5832d1f2 | aliguori | |
178 | 5832d1f2 | aliguori | /**
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179 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
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180 | 5832d1f2 | aliguori | * This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty().
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181 | 5832d1f2 | aliguori | * This means all bits are set to dirty.
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182 | 5832d1f2 | aliguori | *
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183 | 5832d1f2 | aliguori | * @start_add: start of logged region. This is what we use to search the memslot
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184 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
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185 | 5832d1f2 | aliguori | */
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186 | 5832d1f2 | aliguori | void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, target_phys_addr_t end_addr)
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187 | 5832d1f2 | aliguori | { |
188 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
189 | 5832d1f2 | aliguori | KVMDirtyLog d; |
190 | 5832d1f2 | aliguori | KVMSlot *mem = kvm_lookup_slot(s, start_addr); |
191 | 5832d1f2 | aliguori | unsigned long alloc_size; |
192 | 5832d1f2 | aliguori | ram_addr_t addr; |
193 | 5832d1f2 | aliguori | target_phys_addr_t phys_addr = start_addr; |
194 | 5832d1f2 | aliguori | |
195 | 5832d1f2 | aliguori | dprintf("sync addr: %llx into %lx\n", start_addr, mem->phys_offset);
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196 | 5832d1f2 | aliguori | if (mem == NULL) { |
197 | 5832d1f2 | aliguori | fprintf(stderr, "BUG: %s: invalid parameters\n", __func__);
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198 | 5832d1f2 | aliguori | return;
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199 | 5832d1f2 | aliguori | } |
200 | 5832d1f2 | aliguori | |
201 | 5832d1f2 | aliguori | alloc_size = mem->memory_size >> TARGET_PAGE_BITS / sizeof(d.dirty_bitmap);
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202 | 5832d1f2 | aliguori | d.dirty_bitmap = qemu_mallocz(alloc_size); |
203 | 5832d1f2 | aliguori | |
204 | 5832d1f2 | aliguori | if (d.dirty_bitmap == NULL) { |
205 | 5832d1f2 | aliguori | dprintf("Could not allocate dirty bitmap\n");
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206 | 5832d1f2 | aliguori | return;
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207 | 5832d1f2 | aliguori | } |
208 | 5832d1f2 | aliguori | |
209 | 5832d1f2 | aliguori | d.slot = mem->slot; |
210 | 5832d1f2 | aliguori | dprintf("slot %d, phys_addr %llx, uaddr: %llx\n",
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211 | 5832d1f2 | aliguori | d.slot, mem->start_addr, mem->phys_offset); |
212 | 5832d1f2 | aliguori | |
213 | 5832d1f2 | aliguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
214 | 5832d1f2 | aliguori | dprintf("ioctl failed %d\n", errno);
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215 | 5832d1f2 | aliguori | goto out;
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216 | 5832d1f2 | aliguori | } |
217 | 5832d1f2 | aliguori | |
218 | 5832d1f2 | aliguori | phys_addr = start_addr; |
219 | 5832d1f2 | aliguori | for (addr = mem->phys_offset; phys_addr < end_addr; phys_addr+= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) {
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220 | 5832d1f2 | aliguori | unsigned long *bitmap = (unsigned long *)d.dirty_bitmap; |
221 | 5832d1f2 | aliguori | unsigned nr = (phys_addr - start_addr) >> TARGET_PAGE_BITS;
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222 | 5832d1f2 | aliguori | unsigned word = nr / (sizeof(*bitmap) * 8); |
223 | 5832d1f2 | aliguori | unsigned bit = nr % (sizeof(*bitmap) * 8); |
224 | 5832d1f2 | aliguori | if ((bitmap[word] >> bit) & 1) |
225 | 5832d1f2 | aliguori | cpu_physical_memory_set_dirty(addr); |
226 | 5832d1f2 | aliguori | } |
227 | 5832d1f2 | aliguori | out:
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228 | 5832d1f2 | aliguori | qemu_free(d.dirty_bitmap); |
229 | 5832d1f2 | aliguori | } |
230 | 5832d1f2 | aliguori | |
231 | 05330448 | aliguori | int kvm_init(int smp_cpus) |
232 | 05330448 | aliguori | { |
233 | 05330448 | aliguori | KVMState *s; |
234 | 05330448 | aliguori | int ret;
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235 | 05330448 | aliguori | int i;
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236 | 05330448 | aliguori | |
237 | 05330448 | aliguori | if (smp_cpus > 1) |
238 | 05330448 | aliguori | return -EINVAL;
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239 | 05330448 | aliguori | |
240 | 05330448 | aliguori | s = qemu_mallocz(sizeof(KVMState));
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241 | 05330448 | aliguori | if (s == NULL) |
242 | 05330448 | aliguori | return -ENOMEM;
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243 | 05330448 | aliguori | |
244 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) |
245 | 05330448 | aliguori | s->slots[i].slot = i; |
246 | 05330448 | aliguori | |
247 | 05330448 | aliguori | s->vmfd = -1;
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248 | 05330448 | aliguori | s->fd = open("/dev/kvm", O_RDWR);
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249 | 05330448 | aliguori | if (s->fd == -1) { |
250 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
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251 | 05330448 | aliguori | ret = -errno; |
252 | 05330448 | aliguori | goto err;
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253 | 05330448 | aliguori | } |
254 | 05330448 | aliguori | |
255 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
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256 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
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257 | 05330448 | aliguori | if (ret > 0) |
258 | 05330448 | aliguori | ret = -EINVAL; |
259 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
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260 | 05330448 | aliguori | goto err;
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261 | 05330448 | aliguori | } |
262 | 05330448 | aliguori | |
263 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
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264 | 05330448 | aliguori | ret = -EINVAL; |
265 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
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266 | 05330448 | aliguori | goto err;
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267 | 05330448 | aliguori | } |
268 | 05330448 | aliguori | |
269 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
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270 | 05330448 | aliguori | if (s->vmfd < 0) |
271 | 05330448 | aliguori | goto err;
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272 | 05330448 | aliguori | |
273 | 05330448 | aliguori | /* initially, KVM allocated its own memory and we had to jump through
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274 | 05330448 | aliguori | * hooks to make phys_ram_base point to this. Modern versions of KVM
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275 | 05330448 | aliguori | * just use a user allocated buffer so we can use phys_ram_base
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276 | 05330448 | aliguori | * unmodified. Make sure we have a sufficiently modern version of KVM.
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277 | 05330448 | aliguori | */
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278 | 984b5181 | aliguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_USER_MEMORY); |
279 | 05330448 | aliguori | if (ret <= 0) { |
280 | 05330448 | aliguori | if (ret == 0) |
281 | 05330448 | aliguori | ret = -EINVAL; |
282 | 05330448 | aliguori | fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n");
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283 | 05330448 | aliguori | goto err;
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284 | 05330448 | aliguori | } |
285 | 05330448 | aliguori | |
286 | 05330448 | aliguori | ret = kvm_arch_init(s, smp_cpus); |
287 | 05330448 | aliguori | if (ret < 0) |
288 | 05330448 | aliguori | goto err;
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289 | 05330448 | aliguori | |
290 | 05330448 | aliguori | kvm_state = s; |
291 | 05330448 | aliguori | |
292 | 05330448 | aliguori | return 0; |
293 | 05330448 | aliguori | |
294 | 05330448 | aliguori | err:
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295 | 05330448 | aliguori | if (s) {
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296 | 05330448 | aliguori | if (s->vmfd != -1) |
297 | 05330448 | aliguori | close(s->vmfd); |
298 | 05330448 | aliguori | if (s->fd != -1) |
299 | 05330448 | aliguori | close(s->fd); |
300 | 05330448 | aliguori | } |
301 | 05330448 | aliguori | qemu_free(s); |
302 | 05330448 | aliguori | |
303 | 05330448 | aliguori | return ret;
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304 | 05330448 | aliguori | } |
305 | 05330448 | aliguori | |
306 | 05330448 | aliguori | static int kvm_handle_io(CPUState *env, uint16_t port, void *data, |
307 | 05330448 | aliguori | int direction, int size, uint32_t count) |
308 | 05330448 | aliguori | { |
309 | 05330448 | aliguori | int i;
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310 | 05330448 | aliguori | uint8_t *ptr = data; |
311 | 05330448 | aliguori | |
312 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
313 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
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314 | 05330448 | aliguori | switch (size) {
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315 | 05330448 | aliguori | case 1: |
316 | 05330448 | aliguori | stb_p(ptr, cpu_inb(env, port)); |
317 | 05330448 | aliguori | break;
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318 | 05330448 | aliguori | case 2: |
319 | 05330448 | aliguori | stw_p(ptr, cpu_inw(env, port)); |
320 | 05330448 | aliguori | break;
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321 | 05330448 | aliguori | case 4: |
322 | 05330448 | aliguori | stl_p(ptr, cpu_inl(env, port)); |
323 | 05330448 | aliguori | break;
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324 | 05330448 | aliguori | } |
325 | 05330448 | aliguori | } else {
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326 | 05330448 | aliguori | switch (size) {
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327 | 05330448 | aliguori | case 1: |
328 | 05330448 | aliguori | cpu_outb(env, port, ldub_p(ptr)); |
329 | 05330448 | aliguori | break;
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330 | 05330448 | aliguori | case 2: |
331 | 05330448 | aliguori | cpu_outw(env, port, lduw_p(ptr)); |
332 | 05330448 | aliguori | break;
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333 | 05330448 | aliguori | case 4: |
334 | 05330448 | aliguori | cpu_outl(env, port, ldl_p(ptr)); |
335 | 05330448 | aliguori | break;
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336 | 05330448 | aliguori | } |
337 | 05330448 | aliguori | } |
338 | 05330448 | aliguori | |
339 | 05330448 | aliguori | ptr += size; |
340 | 05330448 | aliguori | } |
341 | 05330448 | aliguori | |
342 | 05330448 | aliguori | return 1; |
343 | 05330448 | aliguori | } |
344 | 05330448 | aliguori | |
345 | 05330448 | aliguori | int kvm_cpu_exec(CPUState *env)
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346 | 05330448 | aliguori | { |
347 | 05330448 | aliguori | struct kvm_run *run = env->kvm_run;
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348 | 05330448 | aliguori | int ret;
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349 | 05330448 | aliguori | |
350 | 05330448 | aliguori | dprintf("kvm_cpu_exec()\n");
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351 | 05330448 | aliguori | |
352 | 05330448 | aliguori | do {
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353 | 05330448 | aliguori | kvm_arch_pre_run(env, run); |
354 | 05330448 | aliguori | |
355 | 05330448 | aliguori | if ((env->interrupt_request & CPU_INTERRUPT_EXIT)) {
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356 | 05330448 | aliguori | dprintf("interrupt exit requested\n");
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357 | 05330448 | aliguori | ret = 0;
|
358 | 05330448 | aliguori | break;
|
359 | 05330448 | aliguori | } |
360 | 05330448 | aliguori | |
361 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
|
362 | 05330448 | aliguori | kvm_arch_post_run(env, run); |
363 | 05330448 | aliguori | |
364 | 05330448 | aliguori | if (ret == -EINTR || ret == -EAGAIN) {
|
365 | 05330448 | aliguori | dprintf("io window exit\n");
|
366 | 05330448 | aliguori | ret = 0;
|
367 | 05330448 | aliguori | break;
|
368 | 05330448 | aliguori | } |
369 | 05330448 | aliguori | |
370 | 05330448 | aliguori | if (ret < 0) { |
371 | 05330448 | aliguori | dprintf("kvm run failed %s\n", strerror(-ret));
|
372 | 05330448 | aliguori | abort(); |
373 | 05330448 | aliguori | } |
374 | 05330448 | aliguori | |
375 | 05330448 | aliguori | ret = 0; /* exit loop */ |
376 | 05330448 | aliguori | switch (run->exit_reason) {
|
377 | 05330448 | aliguori | case KVM_EXIT_IO:
|
378 | 05330448 | aliguori | dprintf("handle_io\n");
|
379 | 05330448 | aliguori | ret = kvm_handle_io(env, run->io.port, |
380 | 05330448 | aliguori | (uint8_t *)run + run->io.data_offset, |
381 | 05330448 | aliguori | run->io.direction, |
382 | 05330448 | aliguori | run->io.size, |
383 | 05330448 | aliguori | run->io.count); |
384 | 05330448 | aliguori | break;
|
385 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
386 | 05330448 | aliguori | dprintf("handle_mmio\n");
|
387 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
388 | 05330448 | aliguori | run->mmio.data, |
389 | 05330448 | aliguori | run->mmio.len, |
390 | 05330448 | aliguori | run->mmio.is_write); |
391 | 05330448 | aliguori | ret = 1;
|
392 | 05330448 | aliguori | break;
|
393 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
394 | 05330448 | aliguori | dprintf("irq_window_open\n");
|
395 | 05330448 | aliguori | break;
|
396 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
397 | 05330448 | aliguori | dprintf("shutdown\n");
|
398 | 05330448 | aliguori | qemu_system_reset_request(); |
399 | 05330448 | aliguori | ret = 1;
|
400 | 05330448 | aliguori | break;
|
401 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
402 | 05330448 | aliguori | dprintf("kvm_exit_unknown\n");
|
403 | 05330448 | aliguori | break;
|
404 | 05330448 | aliguori | case KVM_EXIT_FAIL_ENTRY:
|
405 | 05330448 | aliguori | dprintf("kvm_exit_fail_entry\n");
|
406 | 05330448 | aliguori | break;
|
407 | 05330448 | aliguori | case KVM_EXIT_EXCEPTION:
|
408 | 05330448 | aliguori | dprintf("kvm_exit_exception\n");
|
409 | 05330448 | aliguori | break;
|
410 | 05330448 | aliguori | case KVM_EXIT_DEBUG:
|
411 | 05330448 | aliguori | dprintf("kvm_exit_debug\n");
|
412 | 05330448 | aliguori | break;
|
413 | 05330448 | aliguori | default:
|
414 | 05330448 | aliguori | dprintf("kvm_arch_handle_exit\n");
|
415 | 05330448 | aliguori | ret = kvm_arch_handle_exit(env, run); |
416 | 05330448 | aliguori | break;
|
417 | 05330448 | aliguori | } |
418 | 05330448 | aliguori | } while (ret > 0); |
419 | 05330448 | aliguori | |
420 | becfc390 | aliguori | if ((env->interrupt_request & CPU_INTERRUPT_EXIT)) {
|
421 | becfc390 | aliguori | env->interrupt_request &= ~CPU_INTERRUPT_EXIT; |
422 | becfc390 | aliguori | env->exception_index = EXCP_INTERRUPT; |
423 | becfc390 | aliguori | } |
424 | becfc390 | aliguori | |
425 | 05330448 | aliguori | return ret;
|
426 | 05330448 | aliguori | } |
427 | 05330448 | aliguori | |
428 | 05330448 | aliguori | void kvm_set_phys_mem(target_phys_addr_t start_addr,
|
429 | 05330448 | aliguori | ram_addr_t size, |
430 | 05330448 | aliguori | ram_addr_t phys_offset) |
431 | 05330448 | aliguori | { |
432 | 05330448 | aliguori | KVMState *s = kvm_state; |
433 | 05330448 | aliguori | ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK; |
434 | 05330448 | aliguori | KVMSlot *mem; |
435 | 05330448 | aliguori | |
436 | 05330448 | aliguori | /* KVM does not support read-only slots */
|
437 | 05330448 | aliguori | phys_offset &= ~IO_MEM_ROM; |
438 | 05330448 | aliguori | |
439 | 05330448 | aliguori | mem = kvm_lookup_slot(s, start_addr); |
440 | 05330448 | aliguori | if (mem) {
|
441 | a3d6841f | aliguori | if ((flags == IO_MEM_UNASSIGNED) || (flags >= TLB_MMIO)) {
|
442 | 05330448 | aliguori | mem->memory_size = 0;
|
443 | 34fc643f | aliguori | mem->start_addr = start_addr; |
444 | 34fc643f | aliguori | mem->phys_offset = 0;
|
445 | 05330448 | aliguori | mem->flags = 0;
|
446 | 05330448 | aliguori | |
447 | 34fc643f | aliguori | kvm_set_user_memory_region(s, mem); |
448 | 34fc643f | aliguori | } else if (start_addr >= mem->start_addr && |
449 | 34fc643f | aliguori | (start_addr + size) <= (mem->start_addr + |
450 | 62d60e8c | aliguori | mem->memory_size)) { |
451 | 62d60e8c | aliguori | KVMSlot slot; |
452 | 62d60e8c | aliguori | target_phys_addr_t mem_start; |
453 | 62d60e8c | aliguori | ram_addr_t mem_size, mem_offset; |
454 | 62d60e8c | aliguori | |
455 | 62d60e8c | aliguori | /* Not splitting */
|
456 | 34fc643f | aliguori | if ((phys_offset - (start_addr - mem->start_addr)) ==
|
457 | 34fc643f | aliguori | mem->phys_offset) |
458 | 62d60e8c | aliguori | return;
|
459 | 62d60e8c | aliguori | |
460 | 62d60e8c | aliguori | /* unregister whole slot */
|
461 | 62d60e8c | aliguori | memcpy(&slot, mem, sizeof(slot));
|
462 | 62d60e8c | aliguori | mem->memory_size = 0;
|
463 | 34fc643f | aliguori | kvm_set_user_memory_region(s, mem); |
464 | 62d60e8c | aliguori | |
465 | 62d60e8c | aliguori | /* register prefix slot */
|
466 | 34fc643f | aliguori | mem_start = slot.start_addr; |
467 | 34fc643f | aliguori | mem_size = start_addr - slot.start_addr; |
468 | 34fc643f | aliguori | mem_offset = slot.phys_offset; |
469 | 62d60e8c | aliguori | if (mem_size)
|
470 | 62d60e8c | aliguori | kvm_set_phys_mem(mem_start, mem_size, mem_offset); |
471 | 62d60e8c | aliguori | |
472 | 62d60e8c | aliguori | /* register new slot */
|
473 | 62d60e8c | aliguori | kvm_set_phys_mem(start_addr, size, phys_offset); |
474 | 62d60e8c | aliguori | |
475 | 62d60e8c | aliguori | /* register suffix slot */
|
476 | 62d60e8c | aliguori | mem_start = start_addr + size; |
477 | 62d60e8c | aliguori | mem_offset += mem_size + size; |
478 | 62d60e8c | aliguori | mem_size = slot.memory_size - mem_size - size; |
479 | 62d60e8c | aliguori | if (mem_size)
|
480 | 62d60e8c | aliguori | kvm_set_phys_mem(mem_start, mem_size, mem_offset); |
481 | 62d60e8c | aliguori | |
482 | 05330448 | aliguori | return;
|
483 | 62d60e8c | aliguori | } else {
|
484 | 62d60e8c | aliguori | printf("Registering overlapping slot\n");
|
485 | 62d60e8c | aliguori | abort(); |
486 | 62d60e8c | aliguori | } |
487 | 05330448 | aliguori | } |
488 | 05330448 | aliguori | /* KVM does not need to know about this memory */
|
489 | 05330448 | aliguori | if (flags >= IO_MEM_UNASSIGNED)
|
490 | 05330448 | aliguori | return;
|
491 | 05330448 | aliguori | |
492 | 05330448 | aliguori | mem = kvm_alloc_slot(s); |
493 | 05330448 | aliguori | mem->memory_size = size; |
494 | 34fc643f | aliguori | mem->start_addr = start_addr; |
495 | 34fc643f | aliguori | mem->phys_offset = phys_offset; |
496 | 05330448 | aliguori | mem->flags = 0;
|
497 | 05330448 | aliguori | |
498 | 34fc643f | aliguori | kvm_set_user_memory_region(s, mem); |
499 | 05330448 | aliguori | /* FIXME deal with errors */
|
500 | 05330448 | aliguori | } |
501 | 05330448 | aliguori | |
502 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
503 | 05330448 | aliguori | { |
504 | 05330448 | aliguori | int ret;
|
505 | 984b5181 | aliguori | void *arg;
|
506 | 984b5181 | aliguori | va_list ap; |
507 | 05330448 | aliguori | |
508 | 984b5181 | aliguori | va_start(ap, type); |
509 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
510 | 984b5181 | aliguori | va_end(ap); |
511 | 984b5181 | aliguori | |
512 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
513 | 05330448 | aliguori | if (ret == -1) |
514 | 05330448 | aliguori | ret = -errno; |
515 | 05330448 | aliguori | |
516 | 05330448 | aliguori | return ret;
|
517 | 05330448 | aliguori | } |
518 | 05330448 | aliguori | |
519 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
520 | 05330448 | aliguori | { |
521 | 05330448 | aliguori | int ret;
|
522 | 984b5181 | aliguori | void *arg;
|
523 | 984b5181 | aliguori | va_list ap; |
524 | 984b5181 | aliguori | |
525 | 984b5181 | aliguori | va_start(ap, type); |
526 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
527 | 984b5181 | aliguori | va_end(ap); |
528 | 05330448 | aliguori | |
529 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
530 | 05330448 | aliguori | if (ret == -1) |
531 | 05330448 | aliguori | ret = -errno; |
532 | 05330448 | aliguori | |
533 | 05330448 | aliguori | return ret;
|
534 | 05330448 | aliguori | } |
535 | 05330448 | aliguori | |
536 | 984b5181 | aliguori | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
537 | 05330448 | aliguori | { |
538 | 05330448 | aliguori | int ret;
|
539 | 984b5181 | aliguori | void *arg;
|
540 | 984b5181 | aliguori | va_list ap; |
541 | 984b5181 | aliguori | |
542 | 984b5181 | aliguori | va_start(ap, type); |
543 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
544 | 984b5181 | aliguori | va_end(ap); |
545 | 05330448 | aliguori | |
546 | 984b5181 | aliguori | ret = ioctl(env->kvm_fd, type, arg); |
547 | 05330448 | aliguori | if (ret == -1) |
548 | 05330448 | aliguori | ret = -errno; |
549 | 05330448 | aliguori | |
550 | 05330448 | aliguori | return ret;
|
551 | 05330448 | aliguori | } |
552 | bd322087 | aliguori | |
553 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
554 | bd322087 | aliguori | { |
555 | bd322087 | aliguori | KVMState *s = kvm_state; |
556 | bd322087 | aliguori | |
557 | bd322087 | aliguori | #ifdef KVM_CAP_SYNC_MMU
|
558 | bd322087 | aliguori | if (kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_SYNC_MMU) > 0) |
559 | bd322087 | aliguori | return 1; |
560 | bd322087 | aliguori | #endif
|
561 | bd322087 | aliguori | |
562 | bd322087 | aliguori | return 0; |
563 | bd322087 | aliguori | } |