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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 | 85199474 | Marcelo Tosatti | #include "qemu-barrier.h" |
25 | 05330448 | aliguori | #include "sysemu.h" |
26 | d33a1810 | Jan Kiszka | #include "hw/hw.h" |
27 | e22a25c9 | aliguori | #include "gdbstub.h" |
28 | 05330448 | aliguori | #include "kvm.h" |
29 | 8369e01c | Marcelo Tosatti | #include "bswap.h" |
30 | 05330448 | aliguori | |
31 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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32 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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33 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
34 | d2f2b8a7 | Stefan Hajnoczi | #endif
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35 | d2f2b8a7 | Stefan Hajnoczi | |
36 | f65ed4c1 | aliguori | /* KVM uses PAGE_SIZE in it's definition of COALESCED_MMIO_MAX */
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37 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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38 | f65ed4c1 | aliguori | |
39 | 05330448 | aliguori | //#define DEBUG_KVM
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40 | 05330448 | aliguori | |
41 | 05330448 | aliguori | #ifdef DEBUG_KVM
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42 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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43 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
44 | 05330448 | aliguori | #else
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45 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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46 | 05330448 | aliguori | do { } while (0) |
47 | 05330448 | aliguori | #endif
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48 | 05330448 | aliguori | |
49 | 34fc643f | aliguori | typedef struct KVMSlot |
50 | 34fc643f | aliguori | { |
51 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr; |
52 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
53 | c227f099 | Anthony Liguori | ram_addr_t phys_offset; |
54 | 34fc643f | aliguori | int slot;
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55 | 34fc643f | aliguori | int flags;
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56 | 34fc643f | aliguori | } KVMSlot; |
57 | 05330448 | aliguori | |
58 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
59 | 5832d1f2 | aliguori | |
60 | 05330448 | aliguori | struct KVMState
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61 | 05330448 | aliguori | { |
62 | 05330448 | aliguori | KVMSlot slots[32];
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63 | 05330448 | aliguori | int fd;
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64 | 05330448 | aliguori | int vmfd;
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65 | f65ed4c1 | aliguori | int coalesced_mmio;
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66 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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67 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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68 | 4495d6a7 | Jan Kiszka | int migration_log;
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69 | a0fb002c | Jan Kiszka | int vcpu_events;
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70 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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71 | ff44f1a3 | Jan Kiszka | int debugregs;
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72 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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73 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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74 | e22a25c9 | aliguori | #endif
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75 | 6f725c13 | Glauber Costa | int irqchip_in_kernel;
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76 | 6f725c13 | Glauber Costa | int pit_in_kernel;
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77 | f1665b21 | Sheng Yang | int xsave, xcrs;
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78 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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79 | 05330448 | aliguori | }; |
80 | 05330448 | aliguori | |
81 | 6a7af8cb | Jan Kiszka | KVMState *kvm_state; |
82 | 05330448 | aliguori | |
83 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
84 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
85 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
86 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
87 | 94a8d39a | Jan Kiszka | }; |
88 | 94a8d39a | Jan Kiszka | |
89 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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90 | 05330448 | aliguori | { |
91 | 05330448 | aliguori | int i;
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92 | 05330448 | aliguori | |
93 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
94 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
95 | 05330448 | aliguori | return &s->slots[i];
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96 | a426e122 | Jan Kiszka | } |
97 | 05330448 | aliguori | } |
98 | 05330448 | aliguori | |
99 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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100 | d3f8d37f | aliguori | abort(); |
101 | d3f8d37f | aliguori | } |
102 | d3f8d37f | aliguori | |
103 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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104 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
105 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
106 | d3f8d37f | aliguori | { |
107 | d3f8d37f | aliguori | int i;
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108 | d3f8d37f | aliguori | |
109 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
110 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
111 | d3f8d37f | aliguori | |
112 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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113 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
114 | d3f8d37f | aliguori | return mem;
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115 | d3f8d37f | aliguori | } |
116 | d3f8d37f | aliguori | } |
117 | d3f8d37f | aliguori | |
118 | 05330448 | aliguori | return NULL; |
119 | 05330448 | aliguori | } |
120 | 05330448 | aliguori | |
121 | 6152e2ae | aliguori | /*
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122 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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123 | 6152e2ae | aliguori | */
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124 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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125 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
126 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
127 | 05330448 | aliguori | { |
128 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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129 | 05330448 | aliguori | int i;
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130 | 05330448 | aliguori | |
131 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
132 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
133 | 05330448 | aliguori | |
134 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
135 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
136 | 6152e2ae | aliguori | continue;
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137 | 6152e2ae | aliguori | } |
138 | 6152e2ae | aliguori | |
139 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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140 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
141 | 6152e2ae | aliguori | found = mem; |
142 | 6152e2ae | aliguori | } |
143 | 05330448 | aliguori | } |
144 | 05330448 | aliguori | |
145 | 6152e2ae | aliguori | return found;
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146 | 05330448 | aliguori | } |
147 | 05330448 | aliguori | |
148 | 983dfc3b | Huang Ying | int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
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149 | 983dfc3b | Huang Ying | target_phys_addr_t *phys_addr) |
150 | 983dfc3b | Huang Ying | { |
151 | 983dfc3b | Huang Ying | int i;
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152 | 983dfc3b | Huang Ying | |
153 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
154 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
155 | 983dfc3b | Huang Ying | |
156 | 983dfc3b | Huang Ying | if (ram_addr >= mem->phys_offset &&
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157 | 983dfc3b | Huang Ying | ram_addr < mem->phys_offset + mem->memory_size) { |
158 | 983dfc3b | Huang Ying | *phys_addr = mem->start_addr + (ram_addr - mem->phys_offset); |
159 | 983dfc3b | Huang Ying | return 1; |
160 | 983dfc3b | Huang Ying | } |
161 | 983dfc3b | Huang Ying | } |
162 | 983dfc3b | Huang Ying | |
163 | 983dfc3b | Huang Ying | return 0; |
164 | 983dfc3b | Huang Ying | } |
165 | 983dfc3b | Huang Ying | |
166 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
167 | 5832d1f2 | aliguori | { |
168 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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169 | 5832d1f2 | aliguori | |
170 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
171 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
172 | 5832d1f2 | aliguori | mem.memory_size = slot->memory_size; |
173 | b2e0a138 | Michael S. Tsirkin | mem.userspace_addr = (unsigned long)qemu_safe_ram_ptr(slot->phys_offset); |
174 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
175 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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176 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
177 | 4495d6a7 | Jan Kiszka | } |
178 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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179 | 5832d1f2 | aliguori | } |
180 | 5832d1f2 | aliguori | |
181 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
182 | 8d2ba1fb | Jan Kiszka | { |
183 | 8d2ba1fb | Jan Kiszka | CPUState *env = opaque; |
184 | 8d2ba1fb | Jan Kiszka | |
185 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
186 | 8d2ba1fb | Jan Kiszka | } |
187 | 5832d1f2 | aliguori | |
188 | 6f725c13 | Glauber Costa | int kvm_irqchip_in_kernel(void) |
189 | 6f725c13 | Glauber Costa | { |
190 | 6f725c13 | Glauber Costa | return kvm_state->irqchip_in_kernel;
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191 | 6f725c13 | Glauber Costa | } |
192 | 6f725c13 | Glauber Costa | |
193 | 6f725c13 | Glauber Costa | int kvm_pit_in_kernel(void) |
194 | 6f725c13 | Glauber Costa | { |
195 | 6f725c13 | Glauber Costa | return kvm_state->pit_in_kernel;
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196 | 6f725c13 | Glauber Costa | } |
197 | 6f725c13 | Glauber Costa | |
198 | 05330448 | aliguori | int kvm_init_vcpu(CPUState *env)
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199 | 05330448 | aliguori | { |
200 | 05330448 | aliguori | KVMState *s = kvm_state; |
201 | 05330448 | aliguori | long mmap_size;
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202 | 05330448 | aliguori | int ret;
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203 | 05330448 | aliguori | |
204 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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205 | 05330448 | aliguori | |
206 | 984b5181 | aliguori | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
207 | 05330448 | aliguori | if (ret < 0) { |
208 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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209 | 05330448 | aliguori | goto err;
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210 | 05330448 | aliguori | } |
211 | 05330448 | aliguori | |
212 | 05330448 | aliguori | env->kvm_fd = ret; |
213 | 05330448 | aliguori | env->kvm_state = s; |
214 | d841b6c4 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
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215 | 05330448 | aliguori | |
216 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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217 | 05330448 | aliguori | if (mmap_size < 0) { |
218 | 748a680b | Jan Kiszka | ret = mmap_size; |
219 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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220 | 05330448 | aliguori | goto err;
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221 | 05330448 | aliguori | } |
222 | 05330448 | aliguori | |
223 | 05330448 | aliguori | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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224 | 05330448 | aliguori | env->kvm_fd, 0);
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225 | 05330448 | aliguori | if (env->kvm_run == MAP_FAILED) {
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226 | 05330448 | aliguori | ret = -errno; |
227 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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228 | 05330448 | aliguori | goto err;
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229 | 05330448 | aliguori | } |
230 | 05330448 | aliguori | |
231 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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232 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
233 | a426e122 | Jan Kiszka | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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234 | a426e122 | Jan Kiszka | } |
235 | 62a2744c | Sheng Yang | |
236 | 05330448 | aliguori | ret = kvm_arch_init_vcpu(env); |
237 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
238 | a08d4367 | Jan Kiszka | qemu_register_reset(kvm_reset_vcpu, env); |
239 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
240 | 8d2ba1fb | Jan Kiszka | } |
241 | 05330448 | aliguori | err:
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242 | 05330448 | aliguori | return ret;
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243 | 05330448 | aliguori | } |
244 | 05330448 | aliguori | |
245 | 5832d1f2 | aliguori | /*
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246 | 5832d1f2 | aliguori | * dirty pages logging control
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247 | 5832d1f2 | aliguori | */
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248 | c227f099 | Anthony Liguori | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
249 | c227f099 | Anthony Liguori | ram_addr_t size, int flags, int mask) |
250 | 5832d1f2 | aliguori | { |
251 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
252 | d3f8d37f | aliguori | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
253 | 4495d6a7 | Jan Kiszka | int old_flags;
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254 | 4495d6a7 | Jan Kiszka | |
255 | 5832d1f2 | aliguori | if (mem == NULL) { |
256 | d3f8d37f | aliguori | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
257 | d3f8d37f | aliguori | TARGET_FMT_plx "\n", __func__, phys_addr,
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258 | c227f099 | Anthony Liguori | (target_phys_addr_t)(phys_addr + size - 1));
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259 | 5832d1f2 | aliguori | return -EINVAL;
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260 | 5832d1f2 | aliguori | } |
261 | 5832d1f2 | aliguori | |
262 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
263 | 5832d1f2 | aliguori | |
264 | 4495d6a7 | Jan Kiszka | flags = (mem->flags & ~mask) | flags; |
265 | 5832d1f2 | aliguori | mem->flags = flags; |
266 | 5832d1f2 | aliguori | |
267 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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268 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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269 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
270 | 4495d6a7 | Jan Kiszka | } |
271 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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272 | 4495d6a7 | Jan Kiszka | return 0; |
273 | 4495d6a7 | Jan Kiszka | } |
274 | 4495d6a7 | Jan Kiszka | |
275 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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276 | 5832d1f2 | aliguori | } |
277 | 5832d1f2 | aliguori | |
278 | e5896b12 | Anthony PERARD | static int kvm_log_start(CPUPhysMemoryClient *client, |
279 | e5896b12 | Anthony PERARD | target_phys_addr_t phys_addr, ram_addr_t size) |
280 | 5832d1f2 | aliguori | { |
281 | a426e122 | Jan Kiszka | return kvm_dirty_pages_log_change(phys_addr, size, KVM_MEM_LOG_DIRTY_PAGES,
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282 | a426e122 | Jan Kiszka | KVM_MEM_LOG_DIRTY_PAGES); |
283 | 5832d1f2 | aliguori | } |
284 | 5832d1f2 | aliguori | |
285 | e5896b12 | Anthony PERARD | static int kvm_log_stop(CPUPhysMemoryClient *client, |
286 | e5896b12 | Anthony PERARD | target_phys_addr_t phys_addr, ram_addr_t size) |
287 | 5832d1f2 | aliguori | { |
288 | a426e122 | Jan Kiszka | return kvm_dirty_pages_log_change(phys_addr, size, 0, |
289 | a426e122 | Jan Kiszka | KVM_MEM_LOG_DIRTY_PAGES); |
290 | 5832d1f2 | aliguori | } |
291 | 5832d1f2 | aliguori | |
292 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
293 | 4495d6a7 | Jan Kiszka | { |
294 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
295 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
296 | 4495d6a7 | Jan Kiszka | int i, err;
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297 | 4495d6a7 | Jan Kiszka | |
298 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
299 | 4495d6a7 | Jan Kiszka | |
300 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
301 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
302 | 4495d6a7 | Jan Kiszka | |
303 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
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304 | 70fedd76 | Alex Williamson | continue;
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305 | 70fedd76 | Alex Williamson | } |
306 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
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307 | 4495d6a7 | Jan Kiszka | continue;
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308 | 4495d6a7 | Jan Kiszka | } |
309 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
310 | 4495d6a7 | Jan Kiszka | if (err) {
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311 | 4495d6a7 | Jan Kiszka | return err;
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312 | 4495d6a7 | Jan Kiszka | } |
313 | 4495d6a7 | Jan Kiszka | } |
314 | 4495d6a7 | Jan Kiszka | return 0; |
315 | 4495d6a7 | Jan Kiszka | } |
316 | 4495d6a7 | Jan Kiszka | |
317 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
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318 | 8369e01c | Marcelo Tosatti | static int kvm_get_dirty_pages_log_range(unsigned long start_addr, |
319 | 8369e01c | Marcelo Tosatti | unsigned long *bitmap, |
320 | 8369e01c | Marcelo Tosatti | unsigned long offset, |
321 | 8369e01c | Marcelo Tosatti | unsigned long mem_size) |
322 | 96c1606b | Alexander Graf | { |
323 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
324 | 8369e01c | Marcelo Tosatti | unsigned long page_number, addr, addr1, c; |
325 | 8369e01c | Marcelo Tosatti | ram_addr_t ram_addr; |
326 | 8369e01c | Marcelo Tosatti | unsigned int len = ((mem_size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / |
327 | 8369e01c | Marcelo Tosatti | HOST_LONG_BITS; |
328 | 8369e01c | Marcelo Tosatti | |
329 | 8369e01c | Marcelo Tosatti | /*
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330 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
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331 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
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332 | 8369e01c | Marcelo Tosatti | */
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333 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
334 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
335 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
336 | 8369e01c | Marcelo Tosatti | do {
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337 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
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338 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
339 | 8369e01c | Marcelo Tosatti | page_number = i * HOST_LONG_BITS + j; |
340 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
341 | 8369e01c | Marcelo Tosatti | addr = offset + addr1; |
342 | 8369e01c | Marcelo Tosatti | ram_addr = cpu_get_physical_page_desc(addr); |
343 | 8369e01c | Marcelo Tosatti | cpu_physical_memory_set_dirty(ram_addr); |
344 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
345 | 8369e01c | Marcelo Tosatti | } |
346 | 8369e01c | Marcelo Tosatti | } |
347 | 8369e01c | Marcelo Tosatti | return 0; |
348 | 96c1606b | Alexander Graf | } |
349 | 96c1606b | Alexander Graf | |
350 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
351 | 8369e01c | Marcelo Tosatti | |
352 | 5832d1f2 | aliguori | /**
|
353 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
354 | 5832d1f2 | aliguori | * This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty().
|
355 | 5832d1f2 | aliguori | * This means all bits are set to dirty.
|
356 | 5832d1f2 | aliguori | *
|
357 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
358 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
359 | 5832d1f2 | aliguori | */
|
360 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, |
361 | a426e122 | Jan Kiszka | target_phys_addr_t end_addr) |
362 | 5832d1f2 | aliguori | { |
363 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
364 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
365 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
366 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
367 | 151f7749 | Jan Kiszka | int ret = 0; |
368 | 5832d1f2 | aliguori | |
369 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
370 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
371 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
372 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
373 | 151f7749 | Jan Kiszka | break;
|
374 | 151f7749 | Jan Kiszka | } |
375 | 5832d1f2 | aliguori | |
376 | 8369e01c | Marcelo Tosatti | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), HOST_LONG_BITS) / 8;
|
377 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
378 | 151f7749 | Jan Kiszka | d.dirty_bitmap = qemu_malloc(size); |
379 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
380 | 151f7749 | Jan Kiszka | d.dirty_bitmap = qemu_realloc(d.dirty_bitmap, size); |
381 | 151f7749 | Jan Kiszka | } |
382 | 151f7749 | Jan Kiszka | allocated_size = size; |
383 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
384 | 5832d1f2 | aliguori | |
385 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
386 | 5832d1f2 | aliguori | |
387 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
388 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
389 | 151f7749 | Jan Kiszka | ret = -1;
|
390 | 151f7749 | Jan Kiszka | break;
|
391 | 151f7749 | Jan Kiszka | } |
392 | 5832d1f2 | aliguori | |
393 | 8369e01c | Marcelo Tosatti | kvm_get_dirty_pages_log_range(mem->start_addr, d.dirty_bitmap, |
394 | 8369e01c | Marcelo Tosatti | mem->start_addr, mem->memory_size); |
395 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
396 | 5832d1f2 | aliguori | } |
397 | 5832d1f2 | aliguori | qemu_free(d.dirty_bitmap); |
398 | 151f7749 | Jan Kiszka | |
399 | 151f7749 | Jan Kiszka | return ret;
|
400 | 5832d1f2 | aliguori | } |
401 | 5832d1f2 | aliguori | |
402 | c227f099 | Anthony Liguori | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
403 | f65ed4c1 | aliguori | { |
404 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
405 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
406 | f65ed4c1 | aliguori | |
407 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
408 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
409 | f65ed4c1 | aliguori | |
410 | f65ed4c1 | aliguori | zone.addr = start; |
411 | f65ed4c1 | aliguori | zone.size = size; |
412 | f65ed4c1 | aliguori | |
413 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
414 | f65ed4c1 | aliguori | } |
415 | f65ed4c1 | aliguori | |
416 | f65ed4c1 | aliguori | return ret;
|
417 | f65ed4c1 | aliguori | } |
418 | f65ed4c1 | aliguori | |
419 | c227f099 | Anthony Liguori | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
420 | f65ed4c1 | aliguori | { |
421 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
422 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
423 | f65ed4c1 | aliguori | |
424 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
425 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
426 | f65ed4c1 | aliguori | |
427 | f65ed4c1 | aliguori | zone.addr = start; |
428 | f65ed4c1 | aliguori | zone.size = size; |
429 | f65ed4c1 | aliguori | |
430 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
431 | f65ed4c1 | aliguori | } |
432 | f65ed4c1 | aliguori | |
433 | f65ed4c1 | aliguori | return ret;
|
434 | f65ed4c1 | aliguori | } |
435 | f65ed4c1 | aliguori | |
436 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
437 | ad7b8b33 | Anthony Liguori | { |
438 | ad7b8b33 | Anthony Liguori | int ret;
|
439 | ad7b8b33 | Anthony Liguori | |
440 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
441 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
442 | ad7b8b33 | Anthony Liguori | ret = 0;
|
443 | ad7b8b33 | Anthony Liguori | } |
444 | ad7b8b33 | Anthony Liguori | |
445 | ad7b8b33 | Anthony Liguori | return ret;
|
446 | ad7b8b33 | Anthony Liguori | } |
447 | ad7b8b33 | Anthony Liguori | |
448 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
449 | d2f2b8a7 | Stefan Hajnoczi | { |
450 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
451 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
452 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
453 | d0dcac83 | Stefan Hajnoczi | *
|
454 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
455 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
456 | d2f2b8a7 | Stefan Hajnoczi | */
|
457 | d0dcac83 | Stefan Hajnoczi | #if defined(CONFIG_EVENTFD) && defined(CONFIG_IOTHREAD)
|
458 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
459 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
460 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
461 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
462 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
463 | d2f2b8a7 | Stefan Hajnoczi | break;
|
464 | d2f2b8a7 | Stefan Hajnoczi | } |
465 | d2f2b8a7 | Stefan Hajnoczi | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
466 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
467 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
468 | d2f2b8a7 | Stefan Hajnoczi | break;
|
469 | d2f2b8a7 | Stefan Hajnoczi | } |
470 | d2f2b8a7 | Stefan Hajnoczi | } |
471 | d2f2b8a7 | Stefan Hajnoczi | |
472 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
473 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
474 | d2f2b8a7 | Stefan Hajnoczi | |
475 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
476 | d2f2b8a7 | Stefan Hajnoczi | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
477 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
478 | d2f2b8a7 | Stefan Hajnoczi | } |
479 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
480 | d2f2b8a7 | Stefan Hajnoczi | #else
|
481 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
482 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
483 | d2f2b8a7 | Stefan Hajnoczi | } |
484 | d2f2b8a7 | Stefan Hajnoczi | |
485 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
486 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
487 | 94a8d39a | Jan Kiszka | { |
488 | 94a8d39a | Jan Kiszka | while (list->name) {
|
489 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
490 | 94a8d39a | Jan Kiszka | return list;
|
491 | 94a8d39a | Jan Kiszka | } |
492 | 94a8d39a | Jan Kiszka | list++; |
493 | 94a8d39a | Jan Kiszka | } |
494 | 94a8d39a | Jan Kiszka | return NULL; |
495 | 94a8d39a | Jan Kiszka | } |
496 | 94a8d39a | Jan Kiszka | |
497 | a426e122 | Jan Kiszka | static void kvm_set_phys_mem(target_phys_addr_t start_addr, ram_addr_t size, |
498 | a426e122 | Jan Kiszka | ram_addr_t phys_offset) |
499 | 46dbef6a | Michael S. Tsirkin | { |
500 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
501 | 46dbef6a | Michael S. Tsirkin | ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK; |
502 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
503 | 46dbef6a | Michael S. Tsirkin | int err;
|
504 | 46dbef6a | Michael S. Tsirkin | |
505 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
506 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
507 | 14542fea | Gleb Natapov | size = TARGET_PAGE_ALIGN(size); |
508 | 14542fea | Gleb Natapov | start_addr = TARGET_PAGE_ALIGN(start_addr); |
509 | 46dbef6a | Michael S. Tsirkin | |
510 | 46dbef6a | Michael S. Tsirkin | /* KVM does not support read-only slots */
|
511 | 46dbef6a | Michael S. Tsirkin | phys_offset &= ~IO_MEM_ROM; |
512 | 46dbef6a | Michael S. Tsirkin | |
513 | 46dbef6a | Michael S. Tsirkin | while (1) { |
514 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
515 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
516 | 46dbef6a | Michael S. Tsirkin | break;
|
517 | 46dbef6a | Michael S. Tsirkin | } |
518 | 46dbef6a | Michael S. Tsirkin | |
519 | 46dbef6a | Michael S. Tsirkin | if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr &&
|
520 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
521 | 46dbef6a | Michael S. Tsirkin | (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) { |
522 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
523 | 46dbef6a | Michael S. Tsirkin | * identical parameters - nothing to be done. */
|
524 | 46dbef6a | Michael S. Tsirkin | return;
|
525 | 46dbef6a | Michael S. Tsirkin | } |
526 | 46dbef6a | Michael S. Tsirkin | |
527 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
528 | 46dbef6a | Michael S. Tsirkin | |
529 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
530 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
531 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
532 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
533 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
534 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
535 | 46dbef6a | Michael S. Tsirkin | abort(); |
536 | 46dbef6a | Michael S. Tsirkin | } |
537 | 46dbef6a | Michael S. Tsirkin | |
538 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
539 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
540 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
541 | 46dbef6a | Michael S. Tsirkin | *
|
542 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
543 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
544 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
545 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
546 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
547 | 46dbef6a | Michael S. Tsirkin | old.start_addr == start_addr && old.memory_size < size && |
548 | 46dbef6a | Michael S. Tsirkin | flags < IO_MEM_UNASSIGNED) { |
549 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
550 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
551 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
552 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = old.phys_offset; |
553 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
554 | 46dbef6a | Michael S. Tsirkin | |
555 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
556 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
557 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
558 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
559 | 46dbef6a | Michael S. Tsirkin | abort(); |
560 | 46dbef6a | Michael S. Tsirkin | } |
561 | 46dbef6a | Michael S. Tsirkin | |
562 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
563 | 46dbef6a | Michael S. Tsirkin | phys_offset += old.memory_size; |
564 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
565 | 46dbef6a | Michael S. Tsirkin | continue;
|
566 | 46dbef6a | Michael S. Tsirkin | } |
567 | 46dbef6a | Michael S. Tsirkin | |
568 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
569 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
570 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
571 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
572 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
573 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = old.phys_offset; |
574 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
575 | 46dbef6a | Michael S. Tsirkin | |
576 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
577 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
578 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
579 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
580 | 46dbef6a | Michael S. Tsirkin | abort(); |
581 | 46dbef6a | Michael S. Tsirkin | } |
582 | 46dbef6a | Michael S. Tsirkin | } |
583 | 46dbef6a | Michael S. Tsirkin | |
584 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
585 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
586 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
587 | 46dbef6a | Michael S. Tsirkin | |
588 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
589 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
590 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
591 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
592 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = old.phys_offset + size_delta; |
593 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
594 | 46dbef6a | Michael S. Tsirkin | |
595 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
596 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
597 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
598 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
599 | 46dbef6a | Michael S. Tsirkin | abort(); |
600 | 46dbef6a | Michael S. Tsirkin | } |
601 | 46dbef6a | Michael S. Tsirkin | } |
602 | 46dbef6a | Michael S. Tsirkin | } |
603 | 46dbef6a | Michael S. Tsirkin | |
604 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
605 | a426e122 | Jan Kiszka | if (!size) {
|
606 | 46dbef6a | Michael S. Tsirkin | return;
|
607 | a426e122 | Jan Kiszka | } |
608 | 46dbef6a | Michael S. Tsirkin | /* KVM does not need to know about this memory */
|
609 | a426e122 | Jan Kiszka | if (flags >= IO_MEM_UNASSIGNED) {
|
610 | 46dbef6a | Michael S. Tsirkin | return;
|
611 | a426e122 | Jan Kiszka | } |
612 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
613 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
614 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
615 | 46dbef6a | Michael S. Tsirkin | mem->phys_offset = phys_offset; |
616 | 46dbef6a | Michael S. Tsirkin | mem->flags = 0;
|
617 | 46dbef6a | Michael S. Tsirkin | |
618 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
619 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
620 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
621 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
622 | 46dbef6a | Michael S. Tsirkin | abort(); |
623 | 46dbef6a | Michael S. Tsirkin | } |
624 | 46dbef6a | Michael S. Tsirkin | } |
625 | 46dbef6a | Michael S. Tsirkin | |
626 | 7b8f3b78 | Michael S. Tsirkin | static void kvm_client_set_memory(struct CPUPhysMemoryClient *client, |
627 | a426e122 | Jan Kiszka | target_phys_addr_t start_addr, |
628 | a426e122 | Jan Kiszka | ram_addr_t size, ram_addr_t phys_offset) |
629 | 7b8f3b78 | Michael S. Tsirkin | { |
630 | a426e122 | Jan Kiszka | kvm_set_phys_mem(start_addr, size, phys_offset); |
631 | 7b8f3b78 | Michael S. Tsirkin | } |
632 | 7b8f3b78 | Michael S. Tsirkin | |
633 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client, |
634 | a426e122 | Jan Kiszka | target_phys_addr_t start_addr, |
635 | a426e122 | Jan Kiszka | target_phys_addr_t end_addr) |
636 | 7b8f3b78 | Michael S. Tsirkin | { |
637 | a426e122 | Jan Kiszka | return kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
|
638 | 7b8f3b78 | Michael S. Tsirkin | } |
639 | 7b8f3b78 | Michael S. Tsirkin | |
640 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_client_migration_log(struct CPUPhysMemoryClient *client, |
641 | a426e122 | Jan Kiszka | int enable)
|
642 | 7b8f3b78 | Michael S. Tsirkin | { |
643 | a426e122 | Jan Kiszka | return kvm_set_migration_log(enable);
|
644 | 7b8f3b78 | Michael S. Tsirkin | } |
645 | 7b8f3b78 | Michael S. Tsirkin | |
646 | 7b8f3b78 | Michael S. Tsirkin | static CPUPhysMemoryClient kvm_cpu_phys_memory_client = {
|
647 | a426e122 | Jan Kiszka | .set_memory = kvm_client_set_memory, |
648 | a426e122 | Jan Kiszka | .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap, |
649 | a426e122 | Jan Kiszka | .migration_log = kvm_client_migration_log, |
650 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
651 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
652 | 7b8f3b78 | Michael S. Tsirkin | }; |
653 | 7b8f3b78 | Michael S. Tsirkin | |
654 | cad1e282 | Jan Kiszka | int kvm_init(void) |
655 | 05330448 | aliguori | { |
656 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
657 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
658 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
659 | 05330448 | aliguori | KVMState *s; |
660 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
661 | 05330448 | aliguori | int ret;
|
662 | 05330448 | aliguori | int i;
|
663 | 05330448 | aliguori | |
664 | 05330448 | aliguori | s = qemu_mallocz(sizeof(KVMState));
|
665 | 05330448 | aliguori | |
666 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
667 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
668 | e22a25c9 | aliguori | #endif
|
669 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
670 | 05330448 | aliguori | s->slots[i].slot = i; |
671 | a426e122 | Jan Kiszka | } |
672 | 05330448 | aliguori | s->vmfd = -1;
|
673 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
674 | 05330448 | aliguori | if (s->fd == -1) { |
675 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
676 | 05330448 | aliguori | ret = -errno; |
677 | 05330448 | aliguori | goto err;
|
678 | 05330448 | aliguori | } |
679 | 05330448 | aliguori | |
680 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
681 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
682 | a426e122 | Jan Kiszka | if (ret > 0) { |
683 | 05330448 | aliguori | ret = -EINVAL; |
684 | a426e122 | Jan Kiszka | } |
685 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
686 | 05330448 | aliguori | goto err;
|
687 | 05330448 | aliguori | } |
688 | 05330448 | aliguori | |
689 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
690 | 05330448 | aliguori | ret = -EINVAL; |
691 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
692 | 05330448 | aliguori | goto err;
|
693 | 05330448 | aliguori | } |
694 | 05330448 | aliguori | |
695 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
696 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
697 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
698 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
699 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
700 | 0104dcac | Alexander Graf | #endif
|
701 | 05330448 | aliguori | goto err;
|
702 | 0104dcac | Alexander Graf | } |
703 | 05330448 | aliguori | |
704 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
705 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
706 | 94a8d39a | Jan Kiszka | missing_cap = |
707 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
708 | 05330448 | aliguori | } |
709 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
710 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
711 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
712 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
713 | d85dc283 | aliguori | goto err;
|
714 | d85dc283 | aliguori | } |
715 | d85dc283 | aliguori | |
716 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
717 | f65ed4c1 | aliguori | |
718 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
719 | e69917e2 | Jan Kiszka | #ifdef KVM_CAP_JOIN_MEMORY_REGIONS_WORKS
|
720 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
721 | e69917e2 | Jan Kiszka | if (ret > 0) { |
722 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
723 | e69917e2 | Jan Kiszka | } |
724 | e69917e2 | Jan Kiszka | #endif
|
725 | e69917e2 | Jan Kiszka | |
726 | a0fb002c | Jan Kiszka | s->vcpu_events = 0;
|
727 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
728 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
729 | a0fb002c | Jan Kiszka | #endif
|
730 | a0fb002c | Jan Kiszka | |
731 | b0b1d690 | Jan Kiszka | s->robust_singlestep = 0;
|
732 | b0b1d690 | Jan Kiszka | #ifdef KVM_CAP_X86_ROBUST_SINGLESTEP
|
733 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
734 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
735 | b0b1d690 | Jan Kiszka | #endif
|
736 | b0b1d690 | Jan Kiszka | |
737 | ff44f1a3 | Jan Kiszka | s->debugregs = 0;
|
738 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
739 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
740 | ff44f1a3 | Jan Kiszka | #endif
|
741 | ff44f1a3 | Jan Kiszka | |
742 | f1665b21 | Sheng Yang | s->xsave = 0;
|
743 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
744 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
745 | f1665b21 | Sheng Yang | #endif
|
746 | f1665b21 | Sheng Yang | |
747 | f1665b21 | Sheng Yang | s->xcrs = 0;
|
748 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
749 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
750 | f1665b21 | Sheng Yang | #endif
|
751 | f1665b21 | Sheng Yang | |
752 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
753 | a426e122 | Jan Kiszka | if (ret < 0) { |
754 | 05330448 | aliguori | goto err;
|
755 | a426e122 | Jan Kiszka | } |
756 | 05330448 | aliguori | |
757 | 05330448 | aliguori | kvm_state = s; |
758 | 7b8f3b78 | Michael S. Tsirkin | cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client); |
759 | 05330448 | aliguori | |
760 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
761 | d2f2b8a7 | Stefan Hajnoczi | |
762 | 05330448 | aliguori | return 0; |
763 | 05330448 | aliguori | |
764 | 05330448 | aliguori | err:
|
765 | 05330448 | aliguori | if (s) {
|
766 | a426e122 | Jan Kiszka | if (s->vmfd != -1) { |
767 | 05330448 | aliguori | close(s->vmfd); |
768 | a426e122 | Jan Kiszka | } |
769 | a426e122 | Jan Kiszka | if (s->fd != -1) { |
770 | 05330448 | aliguori | close(s->fd); |
771 | a426e122 | Jan Kiszka | } |
772 | 05330448 | aliguori | } |
773 | 05330448 | aliguori | qemu_free(s); |
774 | 05330448 | aliguori | |
775 | 05330448 | aliguori | return ret;
|
776 | 05330448 | aliguori | } |
777 | 05330448 | aliguori | |
778 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
779 | b30e93e9 | Jan Kiszka | uint32_t count) |
780 | 05330448 | aliguori | { |
781 | 05330448 | aliguori | int i;
|
782 | 05330448 | aliguori | uint8_t *ptr = data; |
783 | 05330448 | aliguori | |
784 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
785 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
|
786 | 05330448 | aliguori | switch (size) {
|
787 | 05330448 | aliguori | case 1: |
788 | afcea8cb | Blue Swirl | stb_p(ptr, cpu_inb(port)); |
789 | 05330448 | aliguori | break;
|
790 | 05330448 | aliguori | case 2: |
791 | afcea8cb | Blue Swirl | stw_p(ptr, cpu_inw(port)); |
792 | 05330448 | aliguori | break;
|
793 | 05330448 | aliguori | case 4: |
794 | afcea8cb | Blue Swirl | stl_p(ptr, cpu_inl(port)); |
795 | 05330448 | aliguori | break;
|
796 | 05330448 | aliguori | } |
797 | 05330448 | aliguori | } else {
|
798 | 05330448 | aliguori | switch (size) {
|
799 | 05330448 | aliguori | case 1: |
800 | afcea8cb | Blue Swirl | cpu_outb(port, ldub_p(ptr)); |
801 | 05330448 | aliguori | break;
|
802 | 05330448 | aliguori | case 2: |
803 | afcea8cb | Blue Swirl | cpu_outw(port, lduw_p(ptr)); |
804 | 05330448 | aliguori | break;
|
805 | 05330448 | aliguori | case 4: |
806 | afcea8cb | Blue Swirl | cpu_outl(port, ldl_p(ptr)); |
807 | 05330448 | aliguori | break;
|
808 | 05330448 | aliguori | } |
809 | 05330448 | aliguori | } |
810 | 05330448 | aliguori | |
811 | 05330448 | aliguori | ptr += size; |
812 | 05330448 | aliguori | } |
813 | 05330448 | aliguori | } |
814 | 05330448 | aliguori | |
815 | 7c80eef8 | Marcelo Tosatti | #ifdef KVM_CAP_INTERNAL_ERROR_DATA
|
816 | 73aaec4a | Jan Kiszka | static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run) |
817 | 7c80eef8 | Marcelo Tosatti | { |
818 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
819 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
820 | 7c80eef8 | Marcelo Tosatti | int i;
|
821 | 7c80eef8 | Marcelo Tosatti | |
822 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
823 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
824 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
825 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
826 | 7c80eef8 | Marcelo Tosatti | } |
827 | bb44e0d1 | Jan Kiszka | } else {
|
828 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
829 | 7c80eef8 | Marcelo Tosatti | } |
830 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
831 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
832 | a426e122 | Jan Kiszka | if (!kvm_arch_stop_on_emulation_error(env)) {
|
833 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
834 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
835 | a426e122 | Jan Kiszka | } |
836 | 7c80eef8 | Marcelo Tosatti | } |
837 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
838 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
839 | 7c80eef8 | Marcelo Tosatti | */
|
840 | 73aaec4a | Jan Kiszka | return -1; |
841 | 7c80eef8 | Marcelo Tosatti | } |
842 | 7c80eef8 | Marcelo Tosatti | #endif
|
843 | 7c80eef8 | Marcelo Tosatti | |
844 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
845 | f65ed4c1 | aliguori | { |
846 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
847 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
848 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
849 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
850 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
851 | f65ed4c1 | aliguori | |
852 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
853 | f65ed4c1 | aliguori | |
854 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
855 | 85199474 | Marcelo Tosatti | smp_wmb(); |
856 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
857 | f65ed4c1 | aliguori | } |
858 | f65ed4c1 | aliguori | } |
859 | f65ed4c1 | aliguori | } |
860 | f65ed4c1 | aliguori | |
861 | 2705d56a | Jan Kiszka | static void do_kvm_cpu_synchronize_state(void *_env) |
862 | 4c0960c0 | Avi Kivity | { |
863 | 2705d56a | Jan Kiszka | CPUState *env = _env; |
864 | 2705d56a | Jan Kiszka | |
865 | 9ded2744 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
866 | 4c0960c0 | Avi Kivity | kvm_arch_get_registers(env); |
867 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
|
868 | 4c0960c0 | Avi Kivity | } |
869 | 4c0960c0 | Avi Kivity | } |
870 | 4c0960c0 | Avi Kivity | |
871 | 2705d56a | Jan Kiszka | void kvm_cpu_synchronize_state(CPUState *env)
|
872 | 2705d56a | Jan Kiszka | { |
873 | a426e122 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
874 | 2705d56a | Jan Kiszka | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
875 | a426e122 | Jan Kiszka | } |
876 | 2705d56a | Jan Kiszka | } |
877 | 2705d56a | Jan Kiszka | |
878 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_reset(CPUState *env)
|
879 | ea375f9a | Jan Kiszka | { |
880 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
881 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
882 | ea375f9a | Jan Kiszka | } |
883 | ea375f9a | Jan Kiszka | |
884 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_init(CPUState *env)
|
885 | ea375f9a | Jan Kiszka | { |
886 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
887 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
888 | ea375f9a | Jan Kiszka | } |
889 | ea375f9a | Jan Kiszka | |
890 | 05330448 | aliguori | int kvm_cpu_exec(CPUState *env)
|
891 | 05330448 | aliguori | { |
892 | 05330448 | aliguori | struct kvm_run *run = env->kvm_run;
|
893 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
894 | 05330448 | aliguori | |
895 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
896 | 05330448 | aliguori | |
897 | 99036865 | Jan Kiszka | if (kvm_arch_process_async_events(env)) {
|
898 | 9ccfac9e | Jan Kiszka | env->exit_request = 0;
|
899 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
900 | 9ccfac9e | Jan Kiszka | } |
901 | 0af691d7 | Marcelo Tosatti | |
902 | 6792a57b | Jan Kiszka | cpu_single_env = env; |
903 | 6792a57b | Jan Kiszka | |
904 | 9ccfac9e | Jan Kiszka | do {
|
905 | 9ded2744 | Jan Kiszka | if (env->kvm_vcpu_dirty) {
|
906 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
907 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
908 | 4c0960c0 | Avi Kivity | } |
909 | 4c0960c0 | Avi Kivity | |
910 | 8c14c173 | Jan Kiszka | kvm_arch_pre_run(env, run); |
911 | 9ccfac9e | Jan Kiszka | if (env->exit_request) {
|
912 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
913 | 9ccfac9e | Jan Kiszka | /*
|
914 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
915 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
916 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
917 | 9ccfac9e | Jan Kiszka | */
|
918 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
919 | 9ccfac9e | Jan Kiszka | } |
920 | 273faf1b | Marcelo Tosatti | cpu_single_env = NULL;
|
921 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
922 | 9ccfac9e | Jan Kiszka | |
923 | 7cbb533f | Jan Kiszka | run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
|
924 | 9ccfac9e | Jan Kiszka | |
925 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
926 | 273faf1b | Marcelo Tosatti | cpu_single_env = env; |
927 | 05330448 | aliguori | kvm_arch_post_run(env, run); |
928 | 05330448 | aliguori | |
929 | b0c883b5 | Jan Kiszka | kvm_flush_coalesced_mmio_buffer(); |
930 | b0c883b5 | Jan Kiszka | |
931 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
932 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
933 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
934 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
935 | dc77d341 | Jan Kiszka | break;
|
936 | dc77d341 | Jan Kiszka | } |
937 | 7cbb533f | Jan Kiszka | DPRINTF("kvm run failed %s\n", strerror(-run_ret));
|
938 | 05330448 | aliguori | abort(); |
939 | 05330448 | aliguori | } |
940 | 05330448 | aliguori | |
941 | 05330448 | aliguori | switch (run->exit_reason) {
|
942 | 05330448 | aliguori | case KVM_EXIT_IO:
|
943 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
944 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
945 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
946 | b30e93e9 | Jan Kiszka | run->io.direction, |
947 | b30e93e9 | Jan Kiszka | run->io.size, |
948 | b30e93e9 | Jan Kiszka | run->io.count); |
949 | d73cd8f4 | Jan Kiszka | ret = 0;
|
950 | 05330448 | aliguori | break;
|
951 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
952 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
953 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
954 | 05330448 | aliguori | run->mmio.data, |
955 | 05330448 | aliguori | run->mmio.len, |
956 | 05330448 | aliguori | run->mmio.is_write); |
957 | d73cd8f4 | Jan Kiszka | ret = 0;
|
958 | 05330448 | aliguori | break;
|
959 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
960 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
961 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
962 | 05330448 | aliguori | break;
|
963 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
964 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
965 | 05330448 | aliguori | qemu_system_reset_request(); |
966 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
967 | 05330448 | aliguori | break;
|
968 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
969 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
970 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
971 | 73aaec4a | Jan Kiszka | ret = -1;
|
972 | 05330448 | aliguori | break;
|
973 | 7c80eef8 | Marcelo Tosatti | #ifdef KVM_CAP_INTERNAL_ERROR_DATA
|
974 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
975 | 73aaec4a | Jan Kiszka | ret = kvm_handle_internal_error(env, run); |
976 | 7c80eef8 | Marcelo Tosatti | break;
|
977 | 7c80eef8 | Marcelo Tosatti | #endif
|
978 | 51e8fa60 | Jan Kiszka | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
979 | 05330448 | aliguori | case KVM_EXIT_DEBUG:
|
980 | 8c0d577e | Blue Swirl | DPRINTF("kvm_exit_debug\n");
|
981 | e22a25c9 | aliguori | if (kvm_arch_debug(&run->debug.arch)) {
|
982 | 6792a57b | Jan Kiszka | ret = EXCP_DEBUG; |
983 | d73cd8f4 | Jan Kiszka | break;
|
984 | e22a25c9 | aliguori | } |
985 | e22a25c9 | aliguori | /* re-enter, this exception was guest-internal */
|
986 | d73cd8f4 | Jan Kiszka | ret = 0;
|
987 | 05330448 | aliguori | break;
|
988 | 51e8fa60 | Jan Kiszka | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
989 | 05330448 | aliguori | default:
|
990 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
991 | 05330448 | aliguori | ret = kvm_arch_handle_exit(env, run); |
992 | 05330448 | aliguori | break;
|
993 | 05330448 | aliguori | } |
994 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
995 | 05330448 | aliguori | |
996 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
997 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
998 | e07bbac5 | Jan Kiszka | vm_stop(VMSTOP_PANIC); |
999 | becfc390 | aliguori | } |
1000 | becfc390 | aliguori | |
1001 | 6792a57b | Jan Kiszka | env->exit_request = 0;
|
1002 | 6792a57b | Jan Kiszka | cpu_single_env = NULL;
|
1003 | 05330448 | aliguori | return ret;
|
1004 | 05330448 | aliguori | } |
1005 | 05330448 | aliguori | |
1006 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1007 | 05330448 | aliguori | { |
1008 | 05330448 | aliguori | int ret;
|
1009 | 984b5181 | aliguori | void *arg;
|
1010 | 984b5181 | aliguori | va_list ap; |
1011 | 05330448 | aliguori | |
1012 | 984b5181 | aliguori | va_start(ap, type); |
1013 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1014 | 984b5181 | aliguori | va_end(ap); |
1015 | 984b5181 | aliguori | |
1016 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1017 | a426e122 | Jan Kiszka | if (ret == -1) { |
1018 | 05330448 | aliguori | ret = -errno; |
1019 | a426e122 | Jan Kiszka | } |
1020 | 05330448 | aliguori | return ret;
|
1021 | 05330448 | aliguori | } |
1022 | 05330448 | aliguori | |
1023 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1024 | 05330448 | aliguori | { |
1025 | 05330448 | aliguori | int ret;
|
1026 | 984b5181 | aliguori | void *arg;
|
1027 | 984b5181 | aliguori | va_list ap; |
1028 | 984b5181 | aliguori | |
1029 | 984b5181 | aliguori | va_start(ap, type); |
1030 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1031 | 984b5181 | aliguori | va_end(ap); |
1032 | 05330448 | aliguori | |
1033 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1034 | a426e122 | Jan Kiszka | if (ret == -1) { |
1035 | 05330448 | aliguori | ret = -errno; |
1036 | a426e122 | Jan Kiszka | } |
1037 | 05330448 | aliguori | return ret;
|
1038 | 05330448 | aliguori | } |
1039 | 05330448 | aliguori | |
1040 | 984b5181 | aliguori | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
1041 | 05330448 | aliguori | { |
1042 | 05330448 | aliguori | int ret;
|
1043 | 984b5181 | aliguori | void *arg;
|
1044 | 984b5181 | aliguori | va_list ap; |
1045 | 984b5181 | aliguori | |
1046 | 984b5181 | aliguori | va_start(ap, type); |
1047 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1048 | 984b5181 | aliguori | va_end(ap); |
1049 | 05330448 | aliguori | |
1050 | 984b5181 | aliguori | ret = ioctl(env->kvm_fd, type, arg); |
1051 | a426e122 | Jan Kiszka | if (ret == -1) { |
1052 | 05330448 | aliguori | ret = -errno; |
1053 | a426e122 | Jan Kiszka | } |
1054 | 05330448 | aliguori | return ret;
|
1055 | 05330448 | aliguori | } |
1056 | bd322087 | aliguori | |
1057 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1058 | bd322087 | aliguori | { |
1059 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1060 | bd322087 | aliguori | } |
1061 | e22a25c9 | aliguori | |
1062 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1063 | a0fb002c | Jan Kiszka | { |
1064 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1065 | a0fb002c | Jan Kiszka | } |
1066 | a0fb002c | Jan Kiszka | |
1067 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1068 | b0b1d690 | Jan Kiszka | { |
1069 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1070 | b0b1d690 | Jan Kiszka | } |
1071 | b0b1d690 | Jan Kiszka | |
1072 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1073 | ff44f1a3 | Jan Kiszka | { |
1074 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1075 | ff44f1a3 | Jan Kiszka | } |
1076 | ff44f1a3 | Jan Kiszka | |
1077 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1078 | f1665b21 | Sheng Yang | { |
1079 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1080 | f1665b21 | Sheng Yang | } |
1081 | f1665b21 | Sheng Yang | |
1082 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1083 | f1665b21 | Sheng Yang | { |
1084 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1085 | f1665b21 | Sheng Yang | } |
1086 | f1665b21 | Sheng Yang | |
1087 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1088 | d2f2b8a7 | Stefan Hajnoczi | { |
1089 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1090 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1091 | d2f2b8a7 | Stefan Hajnoczi | } |
1092 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1093 | d2f2b8a7 | Stefan Hajnoczi | } |
1094 | d2f2b8a7 | Stefan Hajnoczi | |
1095 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1096 | 6f0437e8 | Jan Kiszka | { |
1097 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1098 | e78815a5 | Andreas Fรคrber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1099 | 6f0437e8 | Jan Kiszka | |
1100 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1101 | e78815a5 | Andreas Fรคrber | perror("qemu_madvise");
|
1102 | e78815a5 | Andreas Fรคrber | fprintf(stderr, |
1103 | e78815a5 | Andreas Fรคrber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1104 | 6f0437e8 | Jan Kiszka | exit(1);
|
1105 | 6f0437e8 | Jan Kiszka | } |
1106 | 6f0437e8 | Jan Kiszka | } |
1107 | 6f0437e8 | Jan Kiszka | } |
1108 | 6f0437e8 | Jan Kiszka | |
1109 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1110 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
|
1111 | e22a25c9 | aliguori | target_ulong pc) |
1112 | e22a25c9 | aliguori | { |
1113 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1114 | e22a25c9 | aliguori | |
1115 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
1116 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1117 | e22a25c9 | aliguori | return bp;
|
1118 | a426e122 | Jan Kiszka | } |
1119 | e22a25c9 | aliguori | } |
1120 | e22a25c9 | aliguori | return NULL; |
1121 | e22a25c9 | aliguori | } |
1122 | e22a25c9 | aliguori | |
1123 | e22a25c9 | aliguori | int kvm_sw_breakpoints_active(CPUState *env)
|
1124 | e22a25c9 | aliguori | { |
1125 | 72cf2d4f | Blue Swirl | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
|
1126 | e22a25c9 | aliguori | } |
1127 | e22a25c9 | aliguori | |
1128 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1129 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1130 | 452e4751 | Glauber Costa | CPUState *env; |
1131 | 452e4751 | Glauber Costa | int err;
|
1132 | 452e4751 | Glauber Costa | }; |
1133 | 452e4751 | Glauber Costa | |
1134 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1135 | 452e4751 | Glauber Costa | { |
1136 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1137 | b3807725 | Jan Kiszka | CPUState *env = dbg_data->env; |
1138 | b3807725 | Jan Kiszka | |
1139 | b3807725 | Jan Kiszka | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
1140 | 452e4751 | Glauber Costa | } |
1141 | 452e4751 | Glauber Costa | |
1142 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1143 | e22a25c9 | aliguori | { |
1144 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1145 | e22a25c9 | aliguori | |
1146 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1147 | e22a25c9 | aliguori | |
1148 | b0b1d690 | Jan Kiszka | if (env->singlestep_enabled) {
|
1149 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1150 | b0b1d690 | Jan Kiszka | } |
1151 | 452e4751 | Glauber Costa | kvm_arch_update_guest_debug(env, &data.dbg); |
1152 | 452e4751 | Glauber Costa | data.env = env; |
1153 | e22a25c9 | aliguori | |
1154 | be41cbe0 | Jan Kiszka | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
1155 | 452e4751 | Glauber Costa | return data.err;
|
1156 | e22a25c9 | aliguori | } |
1157 | e22a25c9 | aliguori | |
1158 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1159 | e22a25c9 | aliguori | target_ulong len, int type)
|
1160 | e22a25c9 | aliguori | { |
1161 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1162 | e22a25c9 | aliguori | CPUState *env; |
1163 | e22a25c9 | aliguori | int err;
|
1164 | e22a25c9 | aliguori | |
1165 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1166 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1167 | e22a25c9 | aliguori | if (bp) {
|
1168 | e22a25c9 | aliguori | bp->use_count++; |
1169 | e22a25c9 | aliguori | return 0; |
1170 | e22a25c9 | aliguori | } |
1171 | e22a25c9 | aliguori | |
1172 | e22a25c9 | aliguori | bp = qemu_malloc(sizeof(struct kvm_sw_breakpoint)); |
1173 | a426e122 | Jan Kiszka | if (!bp) {
|
1174 | e22a25c9 | aliguori | return -ENOMEM;
|
1175 | a426e122 | Jan Kiszka | } |
1176 | e22a25c9 | aliguori | |
1177 | e22a25c9 | aliguori | bp->pc = addr; |
1178 | e22a25c9 | aliguori | bp->use_count = 1;
|
1179 | e22a25c9 | aliguori | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
1180 | e22a25c9 | aliguori | if (err) {
|
1181 | e22a25c9 | aliguori | free(bp); |
1182 | e22a25c9 | aliguori | return err;
|
1183 | e22a25c9 | aliguori | } |
1184 | e22a25c9 | aliguori | |
1185 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
1186 | e22a25c9 | aliguori | bp, entry); |
1187 | e22a25c9 | aliguori | } else {
|
1188 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1189 | a426e122 | Jan Kiszka | if (err) {
|
1190 | e22a25c9 | aliguori | return err;
|
1191 | a426e122 | Jan Kiszka | } |
1192 | e22a25c9 | aliguori | } |
1193 | e22a25c9 | aliguori | |
1194 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1195 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1196 | a426e122 | Jan Kiszka | if (err) {
|
1197 | e22a25c9 | aliguori | return err;
|
1198 | a426e122 | Jan Kiszka | } |
1199 | e22a25c9 | aliguori | } |
1200 | e22a25c9 | aliguori | return 0; |
1201 | e22a25c9 | aliguori | } |
1202 | e22a25c9 | aliguori | |
1203 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1204 | e22a25c9 | aliguori | target_ulong len, int type)
|
1205 | e22a25c9 | aliguori | { |
1206 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1207 | e22a25c9 | aliguori | CPUState *env; |
1208 | e22a25c9 | aliguori | int err;
|
1209 | e22a25c9 | aliguori | |
1210 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1211 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1212 | a426e122 | Jan Kiszka | if (!bp) {
|
1213 | e22a25c9 | aliguori | return -ENOENT;
|
1214 | a426e122 | Jan Kiszka | } |
1215 | e22a25c9 | aliguori | |
1216 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1217 | e22a25c9 | aliguori | bp->use_count--; |
1218 | e22a25c9 | aliguori | return 0; |
1219 | e22a25c9 | aliguori | } |
1220 | e22a25c9 | aliguori | |
1221 | e22a25c9 | aliguori | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
1222 | a426e122 | Jan Kiszka | if (err) {
|
1223 | e22a25c9 | aliguori | return err;
|
1224 | a426e122 | Jan Kiszka | } |
1225 | e22a25c9 | aliguori | |
1226 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
1227 | e22a25c9 | aliguori | qemu_free(bp); |
1228 | e22a25c9 | aliguori | } else {
|
1229 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1230 | a426e122 | Jan Kiszka | if (err) {
|
1231 | e22a25c9 | aliguori | return err;
|
1232 | a426e122 | Jan Kiszka | } |
1233 | e22a25c9 | aliguori | } |
1234 | e22a25c9 | aliguori | |
1235 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1236 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1237 | a426e122 | Jan Kiszka | if (err) {
|
1238 | e22a25c9 | aliguori | return err;
|
1239 | a426e122 | Jan Kiszka | } |
1240 | e22a25c9 | aliguori | } |
1241 | e22a25c9 | aliguori | return 0; |
1242 | e22a25c9 | aliguori | } |
1243 | e22a25c9 | aliguori | |
1244 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1245 | e22a25c9 | aliguori | { |
1246 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1247 | e22a25c9 | aliguori | KVMState *s = current_env->kvm_state; |
1248 | e22a25c9 | aliguori | CPUState *env; |
1249 | e22a25c9 | aliguori | |
1250 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1251 | e22a25c9 | aliguori | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
1252 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1253 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1254 | a426e122 | Jan Kiszka | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
1255 | e22a25c9 | aliguori | break;
|
1256 | a426e122 | Jan Kiszka | } |
1257 | e22a25c9 | aliguori | } |
1258 | e22a25c9 | aliguori | } |
1259 | e22a25c9 | aliguori | } |
1260 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
1261 | e22a25c9 | aliguori | |
1262 | a426e122 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1263 | e22a25c9 | aliguori | kvm_update_guest_debug(env, 0);
|
1264 | a426e122 | Jan Kiszka | } |
1265 | e22a25c9 | aliguori | } |
1266 | e22a25c9 | aliguori | |
1267 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
1268 | e22a25c9 | aliguori | |
1269 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1270 | e22a25c9 | aliguori | { |
1271 | e22a25c9 | aliguori | return -EINVAL;
|
1272 | e22a25c9 | aliguori | } |
1273 | e22a25c9 | aliguori | |
1274 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1275 | e22a25c9 | aliguori | target_ulong len, int type)
|
1276 | e22a25c9 | aliguori | { |
1277 | e22a25c9 | aliguori | return -EINVAL;
|
1278 | e22a25c9 | aliguori | } |
1279 | e22a25c9 | aliguori | |
1280 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1281 | e22a25c9 | aliguori | target_ulong len, int type)
|
1282 | e22a25c9 | aliguori | { |
1283 | e22a25c9 | aliguori | return -EINVAL;
|
1284 | e22a25c9 | aliguori | } |
1285 | e22a25c9 | aliguori | |
1286 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1287 | e22a25c9 | aliguori | { |
1288 | e22a25c9 | aliguori | } |
1289 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
1290 | cc84de95 | Marcelo Tosatti | |
1291 | cc84de95 | Marcelo Tosatti | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) |
1292 | cc84de95 | Marcelo Tosatti | { |
1293 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
1294 | cc84de95 | Marcelo Tosatti | int r;
|
1295 | cc84de95 | Marcelo Tosatti | |
1296 | a426e122 | Jan Kiszka | if (!sigset) {
|
1297 | cc84de95 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
1298 | a426e122 | Jan Kiszka | } |
1299 | cc84de95 | Marcelo Tosatti | |
1300 | cc84de95 | Marcelo Tosatti | sigmask = qemu_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
1301 | cc84de95 | Marcelo Tosatti | |
1302 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
1303 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
1304 | cc84de95 | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
1305 | cc84de95 | Marcelo Tosatti | free(sigmask); |
1306 | cc84de95 | Marcelo Tosatti | |
1307 | cc84de95 | Marcelo Tosatti | return r;
|
1308 | cc84de95 | Marcelo Tosatti | } |
1309 | ca821806 | Michael S. Tsirkin | |
1310 | 44f1a3d8 | Cam Macdonell | int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign) |
1311 | 44f1a3d8 | Cam Macdonell | { |
1312 | 44f1a3d8 | Cam Macdonell | #ifdef KVM_IOEVENTFD
|
1313 | 44f1a3d8 | Cam Macdonell | int ret;
|
1314 | 44f1a3d8 | Cam Macdonell | struct kvm_ioeventfd iofd;
|
1315 | 44f1a3d8 | Cam Macdonell | |
1316 | 44f1a3d8 | Cam Macdonell | iofd.datamatch = val; |
1317 | 44f1a3d8 | Cam Macdonell | iofd.addr = addr; |
1318 | 44f1a3d8 | Cam Macdonell | iofd.len = 4;
|
1319 | 44f1a3d8 | Cam Macdonell | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
1320 | 44f1a3d8 | Cam Macdonell | iofd.fd = fd; |
1321 | 44f1a3d8 | Cam Macdonell | |
1322 | 44f1a3d8 | Cam Macdonell | if (!kvm_enabled()) {
|
1323 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1324 | 44f1a3d8 | Cam Macdonell | } |
1325 | 44f1a3d8 | Cam Macdonell | |
1326 | 44f1a3d8 | Cam Macdonell | if (!assign) {
|
1327 | 44f1a3d8 | Cam Macdonell | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1328 | 44f1a3d8 | Cam Macdonell | } |
1329 | 44f1a3d8 | Cam Macdonell | |
1330 | 44f1a3d8 | Cam Macdonell | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
1331 | 44f1a3d8 | Cam Macdonell | |
1332 | 44f1a3d8 | Cam Macdonell | if (ret < 0) { |
1333 | 44f1a3d8 | Cam Macdonell | return -errno;
|
1334 | 44f1a3d8 | Cam Macdonell | } |
1335 | 44f1a3d8 | Cam Macdonell | |
1336 | 44f1a3d8 | Cam Macdonell | return 0; |
1337 | 44f1a3d8 | Cam Macdonell | #else
|
1338 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1339 | 44f1a3d8 | Cam Macdonell | #endif
|
1340 | 44f1a3d8 | Cam Macdonell | } |
1341 | 44f1a3d8 | Cam Macdonell | |
1342 | ca821806 | Michael S. Tsirkin | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
1343 | ca821806 | Michael S. Tsirkin | { |
1344 | 98c8573e | Paolo Bonzini | #ifdef KVM_IOEVENTFD
|
1345 | ca821806 | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
1346 | ca821806 | Michael S. Tsirkin | .datamatch = val, |
1347 | ca821806 | Michael S. Tsirkin | .addr = addr, |
1348 | ca821806 | Michael S. Tsirkin | .len = 2,
|
1349 | ca821806 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
1350 | ca821806 | Michael S. Tsirkin | .fd = fd, |
1351 | ca821806 | Michael S. Tsirkin | }; |
1352 | ca821806 | Michael S. Tsirkin | int r;
|
1353 | a426e122 | Jan Kiszka | if (!kvm_enabled()) {
|
1354 | ca821806 | Michael S. Tsirkin | return -ENOSYS;
|
1355 | a426e122 | Jan Kiszka | } |
1356 | a426e122 | Jan Kiszka | if (!assign) {
|
1357 | ca821806 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1358 | a426e122 | Jan Kiszka | } |
1359 | ca821806 | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
1360 | a426e122 | Jan Kiszka | if (r < 0) { |
1361 | ca821806 | Michael S. Tsirkin | return r;
|
1362 | a426e122 | Jan Kiszka | } |
1363 | ca821806 | Michael S. Tsirkin | return 0; |
1364 | 98c8573e | Paolo Bonzini | #else
|
1365 | 98c8573e | Paolo Bonzini | return -ENOSYS;
|
1366 | ca821806 | Michael S. Tsirkin | #endif
|
1367 | 98c8573e | Paolo Bonzini | } |
1368 | a1b87fe0 | Jan Kiszka | |
1369 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr) |
1370 | a1b87fe0 | Jan Kiszka | { |
1371 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus_vcpu(env, code, addr);
|
1372 | a1b87fe0 | Jan Kiszka | } |
1373 | a1b87fe0 | Jan Kiszka | |
1374 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
1375 | a1b87fe0 | Jan Kiszka | { |
1376 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
1377 | a1b87fe0 | Jan Kiszka | } |