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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 | a01672d3 | Avi Kivity | #include "memory.h" |
31 | 05330448 | aliguori | |
32 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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33 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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34 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
35 | d2f2b8a7 | Stefan Hajnoczi | #endif
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36 | d2f2b8a7 | Stefan Hajnoczi | |
37 | f65ed4c1 | aliguori | /* KVM uses PAGE_SIZE in it's definition of COALESCED_MMIO_MAX */
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38 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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39 | f65ed4c1 | aliguori | |
40 | 05330448 | aliguori | //#define DEBUG_KVM
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41 | 05330448 | aliguori | |
42 | 05330448 | aliguori | #ifdef DEBUG_KVM
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43 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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44 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
45 | 05330448 | aliguori | #else
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46 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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47 | 05330448 | aliguori | do { } while (0) |
48 | 05330448 | aliguori | #endif
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49 | 05330448 | aliguori | |
50 | 34fc643f | aliguori | typedef struct KVMSlot |
51 | 34fc643f | aliguori | { |
52 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr; |
53 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
54 | 9f213ed9 | Avi Kivity | void *ram;
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55 | 34fc643f | aliguori | int slot;
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56 | 34fc643f | aliguori | int flags;
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57 | 34fc643f | aliguori | } KVMSlot; |
58 | 05330448 | aliguori | |
59 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
60 | 5832d1f2 | aliguori | |
61 | 05330448 | aliguori | struct KVMState
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62 | 05330448 | aliguori | { |
63 | 05330448 | aliguori | KVMSlot slots[32];
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64 | 05330448 | aliguori | int fd;
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65 | 05330448 | aliguori | int vmfd;
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66 | f65ed4c1 | aliguori | int coalesced_mmio;
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67 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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68 | 1cae88b9 | Avi Kivity | bool coalesced_flush_in_progress;
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69 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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70 | 4495d6a7 | Jan Kiszka | int migration_log;
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71 | a0fb002c | Jan Kiszka | int vcpu_events;
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72 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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73 | ff44f1a3 | Jan Kiszka | int debugregs;
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74 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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75 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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76 | e22a25c9 | aliguori | #endif
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77 | 6f725c13 | Glauber Costa | int pit_in_kernel;
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78 | f1665b21 | Sheng Yang | int xsave, xcrs;
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79 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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80 | 84b058d7 | Jan Kiszka | int irqchip_inject_ioctl;
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81 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
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82 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing *irq_routes;
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83 | 84b058d7 | Jan Kiszka | int nr_allocated_irq_routes;
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84 | 84b058d7 | Jan Kiszka | uint32_t *used_gsi_bitmap; |
85 | 84b058d7 | Jan Kiszka | unsigned int max_gsi; |
86 | 84b058d7 | Jan Kiszka | #endif
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87 | 05330448 | aliguori | }; |
88 | 05330448 | aliguori | |
89 | 6a7af8cb | Jan Kiszka | KVMState *kvm_state; |
90 | 3d4b2649 | Jan Kiszka | bool kvm_kernel_irqchip;
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91 | 05330448 | aliguori | |
92 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
93 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
94 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
95 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
96 | 94a8d39a | Jan Kiszka | }; |
97 | 94a8d39a | Jan Kiszka | |
98 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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99 | 05330448 | aliguori | { |
100 | 05330448 | aliguori | int i;
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101 | 05330448 | aliguori | |
102 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
103 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
104 | 05330448 | aliguori | return &s->slots[i];
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105 | a426e122 | Jan Kiszka | } |
106 | 05330448 | aliguori | } |
107 | 05330448 | aliguori | |
108 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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109 | d3f8d37f | aliguori | abort(); |
110 | d3f8d37f | aliguori | } |
111 | d3f8d37f | aliguori | |
112 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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113 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
114 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
115 | d3f8d37f | aliguori | { |
116 | d3f8d37f | aliguori | int i;
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117 | d3f8d37f | aliguori | |
118 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
119 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
120 | d3f8d37f | aliguori | |
121 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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122 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
123 | d3f8d37f | aliguori | return mem;
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124 | d3f8d37f | aliguori | } |
125 | d3f8d37f | aliguori | } |
126 | d3f8d37f | aliguori | |
127 | 05330448 | aliguori | return NULL; |
128 | 05330448 | aliguori | } |
129 | 05330448 | aliguori | |
130 | 6152e2ae | aliguori | /*
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131 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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132 | 6152e2ae | aliguori | */
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133 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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134 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
135 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
136 | 05330448 | aliguori | { |
137 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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138 | 05330448 | aliguori | int i;
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139 | 05330448 | aliguori | |
140 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
141 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
142 | 05330448 | aliguori | |
143 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
144 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
145 | 6152e2ae | aliguori | continue;
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146 | 6152e2ae | aliguori | } |
147 | 6152e2ae | aliguori | |
148 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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149 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
150 | 6152e2ae | aliguori | found = mem; |
151 | 6152e2ae | aliguori | } |
152 | 05330448 | aliguori | } |
153 | 05330448 | aliguori | |
154 | 6152e2ae | aliguori | return found;
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155 | 05330448 | aliguori | } |
156 | 05330448 | aliguori | |
157 | 9f213ed9 | Avi Kivity | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
158 | 9f213ed9 | Avi Kivity | target_phys_addr_t *phys_addr) |
159 | 983dfc3b | Huang Ying | { |
160 | 983dfc3b | Huang Ying | int i;
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161 | 983dfc3b | Huang Ying | |
162 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
163 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
164 | 983dfc3b | Huang Ying | |
165 | 9f213ed9 | Avi Kivity | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
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166 | 9f213ed9 | Avi Kivity | *phys_addr = mem->start_addr + (ram - mem->ram); |
167 | 983dfc3b | Huang Ying | return 1; |
168 | 983dfc3b | Huang Ying | } |
169 | 983dfc3b | Huang Ying | } |
170 | 983dfc3b | Huang Ying | |
171 | 983dfc3b | Huang Ying | return 0; |
172 | 983dfc3b | Huang Ying | } |
173 | 983dfc3b | Huang Ying | |
174 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
175 | 5832d1f2 | aliguori | { |
176 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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177 | 5832d1f2 | aliguori | |
178 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
179 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
180 | 5832d1f2 | aliguori | mem.memory_size = slot->memory_size; |
181 | 9f213ed9 | Avi Kivity | mem.userspace_addr = (unsigned long)slot->ram; |
182 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
183 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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184 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
185 | 4495d6a7 | Jan Kiszka | } |
186 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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187 | 5832d1f2 | aliguori | } |
188 | 5832d1f2 | aliguori | |
189 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
190 | 8d2ba1fb | Jan Kiszka | { |
191 | 8d2ba1fb | Jan Kiszka | CPUState *env = opaque; |
192 | 8d2ba1fb | Jan Kiszka | |
193 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
194 | 8d2ba1fb | Jan Kiszka | } |
195 | 5832d1f2 | aliguori | |
196 | 6f725c13 | Glauber Costa | int kvm_pit_in_kernel(void) |
197 | 6f725c13 | Glauber Costa | { |
198 | 6f725c13 | Glauber Costa | return kvm_state->pit_in_kernel;
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199 | 6f725c13 | Glauber Costa | } |
200 | 6f725c13 | Glauber Costa | |
201 | 05330448 | aliguori | int kvm_init_vcpu(CPUState *env)
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202 | 05330448 | aliguori | { |
203 | 05330448 | aliguori | KVMState *s = kvm_state; |
204 | 05330448 | aliguori | long mmap_size;
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205 | 05330448 | aliguori | int ret;
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206 | 05330448 | aliguori | |
207 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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208 | 05330448 | aliguori | |
209 | 984b5181 | aliguori | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
210 | 05330448 | aliguori | if (ret < 0) { |
211 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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212 | 05330448 | aliguori | goto err;
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213 | 05330448 | aliguori | } |
214 | 05330448 | aliguori | |
215 | 05330448 | aliguori | env->kvm_fd = ret; |
216 | 05330448 | aliguori | env->kvm_state = s; |
217 | d841b6c4 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
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218 | 05330448 | aliguori | |
219 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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220 | 05330448 | aliguori | if (mmap_size < 0) { |
221 | 748a680b | Jan Kiszka | ret = mmap_size; |
222 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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223 | 05330448 | aliguori | goto err;
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224 | 05330448 | aliguori | } |
225 | 05330448 | aliguori | |
226 | 05330448 | aliguori | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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227 | 05330448 | aliguori | env->kvm_fd, 0);
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228 | 05330448 | aliguori | if (env->kvm_run == MAP_FAILED) {
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229 | 05330448 | aliguori | ret = -errno; |
230 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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231 | 05330448 | aliguori | goto err;
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232 | 05330448 | aliguori | } |
233 | 05330448 | aliguori | |
234 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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235 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
236 | a426e122 | Jan Kiszka | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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237 | a426e122 | Jan Kiszka | } |
238 | 62a2744c | Sheng Yang | |
239 | 05330448 | aliguori | ret = kvm_arch_init_vcpu(env); |
240 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
241 | a08d4367 | Jan Kiszka | qemu_register_reset(kvm_reset_vcpu, env); |
242 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
243 | 8d2ba1fb | Jan Kiszka | } |
244 | 05330448 | aliguori | err:
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245 | 05330448 | aliguori | return ret;
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246 | 05330448 | aliguori | } |
247 | 05330448 | aliguori | |
248 | 5832d1f2 | aliguori | /*
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249 | 5832d1f2 | aliguori | * dirty pages logging control
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250 | 5832d1f2 | aliguori | */
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251 | 25254bbc | Michael S. Tsirkin | |
252 | 25254bbc | Michael S. Tsirkin | static int kvm_mem_flags(KVMState *s, bool log_dirty) |
253 | 25254bbc | Michael S. Tsirkin | { |
254 | 25254bbc | Michael S. Tsirkin | return log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0; |
255 | 25254bbc | Michael S. Tsirkin | } |
256 | 25254bbc | Michael S. Tsirkin | |
257 | 25254bbc | Michael S. Tsirkin | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
258 | 5832d1f2 | aliguori | { |
259 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
260 | 25254bbc | Michael S. Tsirkin | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
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261 | 4495d6a7 | Jan Kiszka | int old_flags;
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262 | 4495d6a7 | Jan Kiszka | |
263 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
264 | 5832d1f2 | aliguori | |
265 | 25254bbc | Michael S. Tsirkin | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty); |
266 | 5832d1f2 | aliguori | mem->flags = flags; |
267 | 5832d1f2 | aliguori | |
268 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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269 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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270 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
271 | 4495d6a7 | Jan Kiszka | } |
272 | 25254bbc | Michael S. Tsirkin | |
273 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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274 | 25254bbc | Michael S. Tsirkin | return 0; |
275 | 4495d6a7 | Jan Kiszka | } |
276 | 4495d6a7 | Jan Kiszka | |
277 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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278 | 5832d1f2 | aliguori | } |
279 | 5832d1f2 | aliguori | |
280 | 25254bbc | Michael S. Tsirkin | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
281 | 25254bbc | Michael S. Tsirkin | ram_addr_t size, bool log_dirty)
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282 | 25254bbc | Michael S. Tsirkin | { |
283 | 25254bbc | Michael S. Tsirkin | KVMState *s = kvm_state; |
284 | 25254bbc | Michael S. Tsirkin | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
285 | 25254bbc | Michael S. Tsirkin | |
286 | 25254bbc | Michael S. Tsirkin | if (mem == NULL) { |
287 | 25254bbc | Michael S. Tsirkin | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
288 | 25254bbc | Michael S. Tsirkin | TARGET_FMT_plx "\n", __func__, phys_addr,
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289 | 25254bbc | Michael S. Tsirkin | (target_phys_addr_t)(phys_addr + size - 1));
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290 | 25254bbc | Michael S. Tsirkin | return -EINVAL;
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291 | 25254bbc | Michael S. Tsirkin | } |
292 | 25254bbc | Michael S. Tsirkin | return kvm_slot_dirty_pages_log_change(mem, log_dirty);
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293 | 25254bbc | Michael S. Tsirkin | } |
294 | 25254bbc | Michael S. Tsirkin | |
295 | a01672d3 | Avi Kivity | static void kvm_log_start(MemoryListener *listener, |
296 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
297 | 5832d1f2 | aliguori | { |
298 | a01672d3 | Avi Kivity | int r;
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299 | a01672d3 | Avi Kivity | |
300 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
301 | a01672d3 | Avi Kivity | section->size, true);
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302 | a01672d3 | Avi Kivity | if (r < 0) { |
303 | a01672d3 | Avi Kivity | abort(); |
304 | a01672d3 | Avi Kivity | } |
305 | 5832d1f2 | aliguori | } |
306 | 5832d1f2 | aliguori | |
307 | a01672d3 | Avi Kivity | static void kvm_log_stop(MemoryListener *listener, |
308 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
309 | 5832d1f2 | aliguori | { |
310 | a01672d3 | Avi Kivity | int r;
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311 | a01672d3 | Avi Kivity | |
312 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
313 | a01672d3 | Avi Kivity | section->size, false);
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314 | a01672d3 | Avi Kivity | if (r < 0) { |
315 | a01672d3 | Avi Kivity | abort(); |
316 | a01672d3 | Avi Kivity | } |
317 | 5832d1f2 | aliguori | } |
318 | 5832d1f2 | aliguori | |
319 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
320 | 4495d6a7 | Jan Kiszka | { |
321 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
322 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
323 | 4495d6a7 | Jan Kiszka | int i, err;
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324 | 4495d6a7 | Jan Kiszka | |
325 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
326 | 4495d6a7 | Jan Kiszka | |
327 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
328 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
329 | 4495d6a7 | Jan Kiszka | |
330 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
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331 | 70fedd76 | Alex Williamson | continue;
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332 | 70fedd76 | Alex Williamson | } |
333 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
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334 | 4495d6a7 | Jan Kiszka | continue;
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335 | 4495d6a7 | Jan Kiszka | } |
336 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
337 | 4495d6a7 | Jan Kiszka | if (err) {
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338 | 4495d6a7 | Jan Kiszka | return err;
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339 | 4495d6a7 | Jan Kiszka | } |
340 | 4495d6a7 | Jan Kiszka | } |
341 | 4495d6a7 | Jan Kiszka | return 0; |
342 | 4495d6a7 | Jan Kiszka | } |
343 | 4495d6a7 | Jan Kiszka | |
344 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
|
345 | ffcde12f | Avi Kivity | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
346 | ffcde12f | Avi Kivity | unsigned long *bitmap) |
347 | 96c1606b | Alexander Graf | { |
348 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
349 | aa90fec7 | Benjamin Herrenschmidt | unsigned long page_number, c; |
350 | aa90fec7 | Benjamin Herrenschmidt | target_phys_addr_t addr, addr1; |
351 | ffcde12f | Avi Kivity | unsigned int len = ((section->size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
352 | 8369e01c | Marcelo Tosatti | |
353 | 8369e01c | Marcelo Tosatti | /*
|
354 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
|
355 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
|
356 | 8369e01c | Marcelo Tosatti | */
|
357 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
358 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
359 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
360 | 8369e01c | Marcelo Tosatti | do {
|
361 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
|
362 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
363 | 8369e01c | Marcelo Tosatti | page_number = i * HOST_LONG_BITS + j; |
364 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
365 | ffcde12f | Avi Kivity | addr = section->offset_within_region + addr1; |
366 | fd4aa979 | Blue Swirl | memory_region_set_dirty(section->mr, addr, TARGET_PAGE_SIZE); |
367 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
368 | 8369e01c | Marcelo Tosatti | } |
369 | 8369e01c | Marcelo Tosatti | } |
370 | 8369e01c | Marcelo Tosatti | return 0; |
371 | 96c1606b | Alexander Graf | } |
372 | 96c1606b | Alexander Graf | |
373 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
374 | 8369e01c | Marcelo Tosatti | |
375 | 5832d1f2 | aliguori | /**
|
376 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
377 | fd4aa979 | Blue Swirl | * This function updates qemu's dirty bitmap using
|
378 | fd4aa979 | Blue Swirl | * memory_region_set_dirty(). This means all bits are set
|
379 | fd4aa979 | Blue Swirl | * to dirty.
|
380 | 5832d1f2 | aliguori | *
|
381 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
382 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
383 | 5832d1f2 | aliguori | */
|
384 | ffcde12f | Avi Kivity | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
385 | 5832d1f2 | aliguori | { |
386 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
387 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
388 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
389 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
390 | 151f7749 | Jan Kiszka | int ret = 0; |
391 | ffcde12f | Avi Kivity | target_phys_addr_t start_addr = section->offset_within_address_space; |
392 | ffcde12f | Avi Kivity | target_phys_addr_t end_addr = start_addr + section->size; |
393 | 5832d1f2 | aliguori | |
394 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
395 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
396 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
397 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
398 | 151f7749 | Jan Kiszka | break;
|
399 | 151f7749 | Jan Kiszka | } |
400 | 5832d1f2 | aliguori | |
401 | 51b0c606 | Michael Tokarev | /* XXX bad kernel interface alert
|
402 | 51b0c606 | Michael Tokarev | * For dirty bitmap, kernel allocates array of size aligned to
|
403 | 51b0c606 | Michael Tokarev | * bits-per-long. But for case when the kernel is 64bits and
|
404 | 51b0c606 | Michael Tokarev | * the userspace is 32bits, userspace can't align to the same
|
405 | 51b0c606 | Michael Tokarev | * bits-per-long, since sizeof(long) is different between kernel
|
406 | 51b0c606 | Michael Tokarev | * and user space. This way, userspace will provide buffer which
|
407 | 51b0c606 | Michael Tokarev | * may be 4 bytes less than the kernel will use, resulting in
|
408 | 51b0c606 | Michael Tokarev | * userspace memory corruption (which is not detectable by valgrind
|
409 | 51b0c606 | Michael Tokarev | * too, in most cases).
|
410 | 51b0c606 | Michael Tokarev | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
|
411 | 51b0c606 | Michael Tokarev | * a hope that sizeof(long) wont become >8 any time soon.
|
412 | 51b0c606 | Michael Tokarev | */
|
413 | 51b0c606 | Michael Tokarev | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
414 | 51b0c606 | Michael Tokarev | /*HOST_LONG_BITS*/ 64) / 8; |
415 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
416 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_malloc(size); |
417 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
418 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
419 | 151f7749 | Jan Kiszka | } |
420 | 151f7749 | Jan Kiszka | allocated_size = size; |
421 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
422 | 5832d1f2 | aliguori | |
423 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
424 | 5832d1f2 | aliguori | |
425 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
426 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
427 | 151f7749 | Jan Kiszka | ret = -1;
|
428 | 151f7749 | Jan Kiszka | break;
|
429 | 151f7749 | Jan Kiszka | } |
430 | 5832d1f2 | aliguori | |
431 | ffcde12f | Avi Kivity | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
432 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
433 | 5832d1f2 | aliguori | } |
434 | 7267c094 | Anthony Liguori | g_free(d.dirty_bitmap); |
435 | 151f7749 | Jan Kiszka | |
436 | 151f7749 | Jan Kiszka | return ret;
|
437 | 5832d1f2 | aliguori | } |
438 | 5832d1f2 | aliguori | |
439 | c227f099 | Anthony Liguori | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
440 | f65ed4c1 | aliguori | { |
441 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
442 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
443 | f65ed4c1 | aliguori | |
444 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
445 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
446 | f65ed4c1 | aliguori | |
447 | f65ed4c1 | aliguori | zone.addr = start; |
448 | f65ed4c1 | aliguori | zone.size = size; |
449 | f65ed4c1 | aliguori | |
450 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
451 | f65ed4c1 | aliguori | } |
452 | f65ed4c1 | aliguori | |
453 | f65ed4c1 | aliguori | return ret;
|
454 | f65ed4c1 | aliguori | } |
455 | f65ed4c1 | aliguori | |
456 | c227f099 | Anthony Liguori | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
457 | f65ed4c1 | aliguori | { |
458 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
459 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
460 | f65ed4c1 | aliguori | |
461 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
462 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
463 | f65ed4c1 | aliguori | |
464 | f65ed4c1 | aliguori | zone.addr = start; |
465 | f65ed4c1 | aliguori | zone.size = size; |
466 | f65ed4c1 | aliguori | |
467 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
468 | f65ed4c1 | aliguori | } |
469 | f65ed4c1 | aliguori | |
470 | f65ed4c1 | aliguori | return ret;
|
471 | f65ed4c1 | aliguori | } |
472 | f65ed4c1 | aliguori | |
473 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
474 | ad7b8b33 | Anthony Liguori | { |
475 | ad7b8b33 | Anthony Liguori | int ret;
|
476 | ad7b8b33 | Anthony Liguori | |
477 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
478 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
479 | ad7b8b33 | Anthony Liguori | ret = 0;
|
480 | ad7b8b33 | Anthony Liguori | } |
481 | ad7b8b33 | Anthony Liguori | |
482 | ad7b8b33 | Anthony Liguori | return ret;
|
483 | ad7b8b33 | Anthony Liguori | } |
484 | ad7b8b33 | Anthony Liguori | |
485 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
486 | d2f2b8a7 | Stefan Hajnoczi | { |
487 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
488 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
489 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
490 | d0dcac83 | Stefan Hajnoczi | *
|
491 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
492 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
493 | d2f2b8a7 | Stefan Hajnoczi | */
|
494 | 12d4536f | Anthony Liguori | #if defined(CONFIG_EVENTFD)
|
495 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
496 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
497 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
498 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
499 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
500 | d2f2b8a7 | Stefan Hajnoczi | break;
|
501 | d2f2b8a7 | Stefan Hajnoczi | } |
502 | d2f2b8a7 | Stefan Hajnoczi | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
503 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
504 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
505 | d2f2b8a7 | Stefan Hajnoczi | break;
|
506 | d2f2b8a7 | Stefan Hajnoczi | } |
507 | d2f2b8a7 | Stefan Hajnoczi | } |
508 | d2f2b8a7 | Stefan Hajnoczi | |
509 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
510 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
511 | d2f2b8a7 | Stefan Hajnoczi | |
512 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
513 | d2f2b8a7 | Stefan Hajnoczi | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
514 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
515 | d2f2b8a7 | Stefan Hajnoczi | } |
516 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
517 | d2f2b8a7 | Stefan Hajnoczi | #else
|
518 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
519 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
520 | d2f2b8a7 | Stefan Hajnoczi | } |
521 | d2f2b8a7 | Stefan Hajnoczi | |
522 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
523 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
524 | 94a8d39a | Jan Kiszka | { |
525 | 94a8d39a | Jan Kiszka | while (list->name) {
|
526 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
527 | 94a8d39a | Jan Kiszka | return list;
|
528 | 94a8d39a | Jan Kiszka | } |
529 | 94a8d39a | Jan Kiszka | list++; |
530 | 94a8d39a | Jan Kiszka | } |
531 | 94a8d39a | Jan Kiszka | return NULL; |
532 | 94a8d39a | Jan Kiszka | } |
533 | 94a8d39a | Jan Kiszka | |
534 | a01672d3 | Avi Kivity | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
535 | 46dbef6a | Michael S. Tsirkin | { |
536 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
537 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
538 | 46dbef6a | Michael S. Tsirkin | int err;
|
539 | a01672d3 | Avi Kivity | MemoryRegion *mr = section->mr; |
540 | a01672d3 | Avi Kivity | bool log_dirty = memory_region_is_logging(mr);
|
541 | a01672d3 | Avi Kivity | target_phys_addr_t start_addr = section->offset_within_address_space; |
542 | a01672d3 | Avi Kivity | ram_addr_t size = section->size; |
543 | 9f213ed9 | Avi Kivity | void *ram = NULL; |
544 | 8f6f962b | Avi Kivity | unsigned delta;
|
545 | 46dbef6a | Michael S. Tsirkin | |
546 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
547 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
548 | 8f6f962b | Avi Kivity | delta = TARGET_PAGE_ALIGN(size) - size; |
549 | 8f6f962b | Avi Kivity | if (delta > size) {
|
550 | 8f6f962b | Avi Kivity | return;
|
551 | 8f6f962b | Avi Kivity | } |
552 | 8f6f962b | Avi Kivity | start_addr += delta; |
553 | 8f6f962b | Avi Kivity | size -= delta; |
554 | 8f6f962b | Avi Kivity | size &= TARGET_PAGE_MASK; |
555 | 8f6f962b | Avi Kivity | if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
|
556 | 8f6f962b | Avi Kivity | return;
|
557 | 8f6f962b | Avi Kivity | } |
558 | 46dbef6a | Michael S. Tsirkin | |
559 | a01672d3 | Avi Kivity | if (!memory_region_is_ram(mr)) {
|
560 | a01672d3 | Avi Kivity | return;
|
561 | 9f213ed9 | Avi Kivity | } |
562 | 9f213ed9 | Avi Kivity | |
563 | 8f6f962b | Avi Kivity | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
564 | a01672d3 | Avi Kivity | |
565 | 46dbef6a | Michael S. Tsirkin | while (1) { |
566 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
567 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
568 | 46dbef6a | Michael S. Tsirkin | break;
|
569 | 46dbef6a | Michael S. Tsirkin | } |
570 | 46dbef6a | Michael S. Tsirkin | |
571 | a01672d3 | Avi Kivity | if (add && start_addr >= mem->start_addr &&
|
572 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
573 | 9f213ed9 | Avi Kivity | (ram - start_addr == mem->ram - mem->start_addr)) { |
574 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
575 | 25254bbc | Michael S. Tsirkin | * identical parameters - update flags and done. */
|
576 | 25254bbc | Michael S. Tsirkin | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
577 | 46dbef6a | Michael S. Tsirkin | return;
|
578 | 46dbef6a | Michael S. Tsirkin | } |
579 | 46dbef6a | Michael S. Tsirkin | |
580 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
581 | 46dbef6a | Michael S. Tsirkin | |
582 | 3fbffb62 | Avi Kivity | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
|
583 | 3fbffb62 | Avi Kivity | kvm_physical_sync_dirty_bitmap(section); |
584 | 3fbffb62 | Avi Kivity | } |
585 | 3fbffb62 | Avi Kivity | |
586 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
587 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
588 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
589 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
590 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
591 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
592 | 46dbef6a | Michael S. Tsirkin | abort(); |
593 | 46dbef6a | Michael S. Tsirkin | } |
594 | 46dbef6a | Michael S. Tsirkin | |
595 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
596 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
597 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
598 | 46dbef6a | Michael S. Tsirkin | *
|
599 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
600 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
601 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
602 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
603 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
604 | a01672d3 | Avi Kivity | old.start_addr == start_addr && old.memory_size < size && add) { |
605 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
606 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
607 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
608 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
609 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
610 | 46dbef6a | Michael S. Tsirkin | |
611 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
612 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
613 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
614 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
615 | 46dbef6a | Michael S. Tsirkin | abort(); |
616 | 46dbef6a | Michael S. Tsirkin | } |
617 | 46dbef6a | Michael S. Tsirkin | |
618 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
619 | 9f213ed9 | Avi Kivity | ram += old.memory_size; |
620 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
621 | 46dbef6a | Michael S. Tsirkin | continue;
|
622 | 46dbef6a | Michael S. Tsirkin | } |
623 | 46dbef6a | Michael S. Tsirkin | |
624 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
625 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
626 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
627 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
628 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
629 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
630 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
631 | 46dbef6a | Michael S. Tsirkin | |
632 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
633 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
634 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
635 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
636 | d4d6868f | Alexander Graf | #ifdef TARGET_PPC
|
637 | d4d6868f | Alexander Graf | fprintf(stderr, "%s: This is probably because your kernel's " \
|
638 | d4d6868f | Alexander Graf | "PAGE_SIZE is too big. Please try to use 4k " \
|
639 | d4d6868f | Alexander Graf | "PAGE_SIZE!\n", __func__);
|
640 | d4d6868f | Alexander Graf | #endif
|
641 | 46dbef6a | Michael S. Tsirkin | abort(); |
642 | 46dbef6a | Michael S. Tsirkin | } |
643 | 46dbef6a | Michael S. Tsirkin | } |
644 | 46dbef6a | Michael S. Tsirkin | |
645 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
646 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
647 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
648 | 46dbef6a | Michael S. Tsirkin | |
649 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
650 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
651 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
652 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
653 | 9f213ed9 | Avi Kivity | mem->ram = old.ram + size_delta; |
654 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
655 | 46dbef6a | Michael S. Tsirkin | |
656 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
657 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
658 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
659 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
660 | 46dbef6a | Michael S. Tsirkin | abort(); |
661 | 46dbef6a | Michael S. Tsirkin | } |
662 | 46dbef6a | Michael S. Tsirkin | } |
663 | 46dbef6a | Michael S. Tsirkin | } |
664 | 46dbef6a | Michael S. Tsirkin | |
665 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
666 | a426e122 | Jan Kiszka | if (!size) {
|
667 | 46dbef6a | Michael S. Tsirkin | return;
|
668 | a426e122 | Jan Kiszka | } |
669 | a01672d3 | Avi Kivity | if (!add) {
|
670 | 46dbef6a | Michael S. Tsirkin | return;
|
671 | a426e122 | Jan Kiszka | } |
672 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
673 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
674 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
675 | 9f213ed9 | Avi Kivity | mem->ram = ram; |
676 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
677 | 46dbef6a | Michael S. Tsirkin | |
678 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
679 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
680 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
681 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
682 | 46dbef6a | Michael S. Tsirkin | abort(); |
683 | 46dbef6a | Michael S. Tsirkin | } |
684 | 46dbef6a | Michael S. Tsirkin | } |
685 | 46dbef6a | Michael S. Tsirkin | |
686 | a01672d3 | Avi Kivity | static void kvm_region_add(MemoryListener *listener, |
687 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
688 | a01672d3 | Avi Kivity | { |
689 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, true);
|
690 | a01672d3 | Avi Kivity | } |
691 | a01672d3 | Avi Kivity | |
692 | a01672d3 | Avi Kivity | static void kvm_region_del(MemoryListener *listener, |
693 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
694 | a01672d3 | Avi Kivity | { |
695 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, false);
|
696 | a01672d3 | Avi Kivity | } |
697 | a01672d3 | Avi Kivity | |
698 | a01672d3 | Avi Kivity | static void kvm_log_sync(MemoryListener *listener, |
699 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
700 | 7b8f3b78 | Michael S. Tsirkin | { |
701 | a01672d3 | Avi Kivity | int r;
|
702 | a01672d3 | Avi Kivity | |
703 | ffcde12f | Avi Kivity | r = kvm_physical_sync_dirty_bitmap(section); |
704 | a01672d3 | Avi Kivity | if (r < 0) { |
705 | a01672d3 | Avi Kivity | abort(); |
706 | a01672d3 | Avi Kivity | } |
707 | 7b8f3b78 | Michael S. Tsirkin | } |
708 | 7b8f3b78 | Michael S. Tsirkin | |
709 | a01672d3 | Avi Kivity | static void kvm_log_global_start(struct MemoryListener *listener) |
710 | 7b8f3b78 | Michael S. Tsirkin | { |
711 | a01672d3 | Avi Kivity | int r;
|
712 | a01672d3 | Avi Kivity | |
713 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(1);
|
714 | a01672d3 | Avi Kivity | assert(r >= 0);
|
715 | 7b8f3b78 | Michael S. Tsirkin | } |
716 | 7b8f3b78 | Michael S. Tsirkin | |
717 | a01672d3 | Avi Kivity | static void kvm_log_global_stop(struct MemoryListener *listener) |
718 | 7b8f3b78 | Michael S. Tsirkin | { |
719 | a01672d3 | Avi Kivity | int r;
|
720 | a01672d3 | Avi Kivity | |
721 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(0);
|
722 | a01672d3 | Avi Kivity | assert(r >= 0);
|
723 | 7b8f3b78 | Michael S. Tsirkin | } |
724 | 7b8f3b78 | Michael S. Tsirkin | |
725 | a01672d3 | Avi Kivity | static MemoryListener kvm_memory_listener = {
|
726 | a01672d3 | Avi Kivity | .region_add = kvm_region_add, |
727 | a01672d3 | Avi Kivity | .region_del = kvm_region_del, |
728 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
729 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
730 | a01672d3 | Avi Kivity | .log_sync = kvm_log_sync, |
731 | a01672d3 | Avi Kivity | .log_global_start = kvm_log_global_start, |
732 | a01672d3 | Avi Kivity | .log_global_stop = kvm_log_global_stop, |
733 | 7b8f3b78 | Michael S. Tsirkin | }; |
734 | 7b8f3b78 | Michael S. Tsirkin | |
735 | aa7f74d1 | Jan Kiszka | static void kvm_handle_interrupt(CPUState *env, int mask) |
736 | aa7f74d1 | Jan Kiszka | { |
737 | aa7f74d1 | Jan Kiszka | env->interrupt_request |= mask; |
738 | aa7f74d1 | Jan Kiszka | |
739 | aa7f74d1 | Jan Kiszka | if (!qemu_cpu_is_self(env)) {
|
740 | aa7f74d1 | Jan Kiszka | qemu_cpu_kick(env); |
741 | aa7f74d1 | Jan Kiszka | } |
742 | aa7f74d1 | Jan Kiszka | } |
743 | aa7f74d1 | Jan Kiszka | |
744 | 84b058d7 | Jan Kiszka | int kvm_irqchip_set_irq(KVMState *s, int irq, int level) |
745 | 84b058d7 | Jan Kiszka | { |
746 | 84b058d7 | Jan Kiszka | struct kvm_irq_level event;
|
747 | 84b058d7 | Jan Kiszka | int ret;
|
748 | 84b058d7 | Jan Kiszka | |
749 | 3d4b2649 | Jan Kiszka | assert(kvm_irqchip_in_kernel()); |
750 | 84b058d7 | Jan Kiszka | |
751 | 84b058d7 | Jan Kiszka | event.level = level; |
752 | 84b058d7 | Jan Kiszka | event.irq = irq; |
753 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, s->irqchip_inject_ioctl, &event); |
754 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
755 | 84b058d7 | Jan Kiszka | perror("kvm_set_irqchip_line");
|
756 | 84b058d7 | Jan Kiszka | abort(); |
757 | 84b058d7 | Jan Kiszka | } |
758 | 84b058d7 | Jan Kiszka | |
759 | 84b058d7 | Jan Kiszka | return (s->irqchip_inject_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
760 | 84b058d7 | Jan Kiszka | } |
761 | 84b058d7 | Jan Kiszka | |
762 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
763 | 84b058d7 | Jan Kiszka | static void set_gsi(KVMState *s, unsigned int gsi) |
764 | 84b058d7 | Jan Kiszka | { |
765 | 84b058d7 | Jan Kiszka | assert(gsi < s->max_gsi); |
766 | 84b058d7 | Jan Kiszka | |
767 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
768 | 84b058d7 | Jan Kiszka | } |
769 | 84b058d7 | Jan Kiszka | |
770 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
771 | 84b058d7 | Jan Kiszka | { |
772 | 84b058d7 | Jan Kiszka | int gsi_count;
|
773 | 84b058d7 | Jan Kiszka | |
774 | 84b058d7 | Jan Kiszka | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
775 | 84b058d7 | Jan Kiszka | if (gsi_count > 0) { |
776 | 84b058d7 | Jan Kiszka | unsigned int gsi_bits, i; |
777 | 84b058d7 | Jan Kiszka | |
778 | 84b058d7 | Jan Kiszka | /* Round up so we can search ints using ffs */
|
779 | 84b058d7 | Jan Kiszka | gsi_bits = (gsi_count + 31) / 32; |
780 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
|
781 | 84b058d7 | Jan Kiszka | s->max_gsi = gsi_bits; |
782 | 84b058d7 | Jan Kiszka | |
783 | 84b058d7 | Jan Kiszka | /* Mark any over-allocated bits as already in use */
|
784 | 84b058d7 | Jan Kiszka | for (i = gsi_count; i < gsi_bits; i++) {
|
785 | 84b058d7 | Jan Kiszka | set_gsi(s, i); |
786 | 84b058d7 | Jan Kiszka | } |
787 | 84b058d7 | Jan Kiszka | } |
788 | 84b058d7 | Jan Kiszka | |
789 | 84b058d7 | Jan Kiszka | s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
|
790 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = 0;
|
791 | 84b058d7 | Jan Kiszka | |
792 | 84b058d7 | Jan Kiszka | kvm_arch_init_irq_routing(s); |
793 | 84b058d7 | Jan Kiszka | } |
794 | 84b058d7 | Jan Kiszka | |
795 | 84b058d7 | Jan Kiszka | static void kvm_add_routing_entry(KVMState *s, |
796 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *entry)
|
797 | 84b058d7 | Jan Kiszka | { |
798 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *new;
|
799 | 84b058d7 | Jan Kiszka | int n, size;
|
800 | 84b058d7 | Jan Kiszka | |
801 | 84b058d7 | Jan Kiszka | if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
|
802 | 84b058d7 | Jan Kiszka | n = s->nr_allocated_irq_routes * 2;
|
803 | 84b058d7 | Jan Kiszka | if (n < 64) { |
804 | 84b058d7 | Jan Kiszka | n = 64;
|
805 | 84b058d7 | Jan Kiszka | } |
806 | 84b058d7 | Jan Kiszka | size = sizeof(struct kvm_irq_routing); |
807 | 84b058d7 | Jan Kiszka | size += n * sizeof(*new);
|
808 | 84b058d7 | Jan Kiszka | s->irq_routes = g_realloc(s->irq_routes, size); |
809 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = n; |
810 | 84b058d7 | Jan Kiszka | } |
811 | 84b058d7 | Jan Kiszka | n = s->irq_routes->nr++; |
812 | 84b058d7 | Jan Kiszka | new = &s->irq_routes->entries[n]; |
813 | 84b058d7 | Jan Kiszka | memset(new, 0, sizeof(*new)); |
814 | 84b058d7 | Jan Kiszka | new->gsi = entry->gsi; |
815 | 84b058d7 | Jan Kiszka | new->type = entry->type; |
816 | 84b058d7 | Jan Kiszka | new->flags = entry->flags; |
817 | 84b058d7 | Jan Kiszka | new->u = entry->u; |
818 | 84b058d7 | Jan Kiszka | |
819 | 84b058d7 | Jan Kiszka | set_gsi(s, entry->gsi); |
820 | 84b058d7 | Jan Kiszka | } |
821 | 84b058d7 | Jan Kiszka | |
822 | 84b058d7 | Jan Kiszka | void kvm_irqchip_add_route(KVMState *s, int irq, int irqchip, int pin) |
823 | 84b058d7 | Jan Kiszka | { |
824 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry e;
|
825 | 84b058d7 | Jan Kiszka | |
826 | 84b058d7 | Jan Kiszka | e.gsi = irq; |
827 | 84b058d7 | Jan Kiszka | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
828 | 84b058d7 | Jan Kiszka | e.flags = 0;
|
829 | 84b058d7 | Jan Kiszka | e.u.irqchip.irqchip = irqchip; |
830 | 84b058d7 | Jan Kiszka | e.u.irqchip.pin = pin; |
831 | 84b058d7 | Jan Kiszka | kvm_add_routing_entry(s, &e); |
832 | 84b058d7 | Jan Kiszka | } |
833 | 84b058d7 | Jan Kiszka | |
834 | 84b058d7 | Jan Kiszka | int kvm_irqchip_commit_routes(KVMState *s)
|
835 | 84b058d7 | Jan Kiszka | { |
836 | 84b058d7 | Jan Kiszka | s->irq_routes->flags = 0;
|
837 | 84b058d7 | Jan Kiszka | return kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes);
|
838 | 84b058d7 | Jan Kiszka | } |
839 | 84b058d7 | Jan Kiszka | |
840 | 84b058d7 | Jan Kiszka | #else /* !KVM_CAP_IRQ_ROUTING */ |
841 | 84b058d7 | Jan Kiszka | |
842 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
843 | 84b058d7 | Jan Kiszka | { |
844 | 84b058d7 | Jan Kiszka | } |
845 | 84b058d7 | Jan Kiszka | #endif /* !KVM_CAP_IRQ_ROUTING */ |
846 | 84b058d7 | Jan Kiszka | |
847 | 84b058d7 | Jan Kiszka | static int kvm_irqchip_create(KVMState *s) |
848 | 84b058d7 | Jan Kiszka | { |
849 | 84b058d7 | Jan Kiszka | QemuOptsList *list = qemu_find_opts("machine");
|
850 | 84b058d7 | Jan Kiszka | int ret;
|
851 | 84b058d7 | Jan Kiszka | |
852 | 84b058d7 | Jan Kiszka | if (QTAILQ_EMPTY(&list->head) ||
|
853 | 84b058d7 | Jan Kiszka | !qemu_opt_get_bool(QTAILQ_FIRST(&list->head), |
854 | 84b058d7 | Jan Kiszka | "kernel_irqchip", false) || |
855 | 84b058d7 | Jan Kiszka | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
856 | 84b058d7 | Jan Kiszka | return 0; |
857 | 84b058d7 | Jan Kiszka | } |
858 | 84b058d7 | Jan Kiszka | |
859 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
860 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
861 | 84b058d7 | Jan Kiszka | fprintf(stderr, "Create kernel irqchip failed\n");
|
862 | 84b058d7 | Jan Kiszka | return ret;
|
863 | 84b058d7 | Jan Kiszka | } |
864 | 84b058d7 | Jan Kiszka | |
865 | 84b058d7 | Jan Kiszka | s->irqchip_inject_ioctl = KVM_IRQ_LINE; |
866 | 84b058d7 | Jan Kiszka | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
|
867 | 84b058d7 | Jan Kiszka | s->irqchip_inject_ioctl = KVM_IRQ_LINE_STATUS; |
868 | 84b058d7 | Jan Kiszka | } |
869 | 3d4b2649 | Jan Kiszka | kvm_kernel_irqchip = true;
|
870 | 84b058d7 | Jan Kiszka | |
871 | 84b058d7 | Jan Kiszka | kvm_init_irq_routing(s); |
872 | 84b058d7 | Jan Kiszka | |
873 | 84b058d7 | Jan Kiszka | return 0; |
874 | 84b058d7 | Jan Kiszka | } |
875 | 84b058d7 | Jan Kiszka | |
876 | cad1e282 | Jan Kiszka | int kvm_init(void) |
877 | 05330448 | aliguori | { |
878 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
879 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
880 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
881 | 05330448 | aliguori | KVMState *s; |
882 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
883 | 05330448 | aliguori | int ret;
|
884 | 05330448 | aliguori | int i;
|
885 | 05330448 | aliguori | |
886 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(KVMState));
|
887 | 05330448 | aliguori | |
888 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
889 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
890 | e22a25c9 | aliguori | #endif
|
891 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
892 | 05330448 | aliguori | s->slots[i].slot = i; |
893 | a426e122 | Jan Kiszka | } |
894 | 05330448 | aliguori | s->vmfd = -1;
|
895 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
896 | 05330448 | aliguori | if (s->fd == -1) { |
897 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
898 | 05330448 | aliguori | ret = -errno; |
899 | 05330448 | aliguori | goto err;
|
900 | 05330448 | aliguori | } |
901 | 05330448 | aliguori | |
902 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
903 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
904 | a426e122 | Jan Kiszka | if (ret > 0) { |
905 | 05330448 | aliguori | ret = -EINVAL; |
906 | a426e122 | Jan Kiszka | } |
907 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
908 | 05330448 | aliguori | goto err;
|
909 | 05330448 | aliguori | } |
910 | 05330448 | aliguori | |
911 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
912 | 05330448 | aliguori | ret = -EINVAL; |
913 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
914 | 05330448 | aliguori | goto err;
|
915 | 05330448 | aliguori | } |
916 | 05330448 | aliguori | |
917 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
918 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
919 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
920 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
921 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
922 | 0104dcac | Alexander Graf | #endif
|
923 | db9eae1c | Xu He Jie | ret = s->vmfd; |
924 | 05330448 | aliguori | goto err;
|
925 | 0104dcac | Alexander Graf | } |
926 | 05330448 | aliguori | |
927 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
928 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
929 | 94a8d39a | Jan Kiszka | missing_cap = |
930 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
931 | 05330448 | aliguori | } |
932 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
933 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
934 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
935 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
936 | d85dc283 | aliguori | goto err;
|
937 | d85dc283 | aliguori | } |
938 | d85dc283 | aliguori | |
939 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
940 | f65ed4c1 | aliguori | |
941 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
942 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
943 | e69917e2 | Jan Kiszka | if (ret > 0) { |
944 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
945 | e69917e2 | Jan Kiszka | } |
946 | e69917e2 | Jan Kiszka | |
947 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
948 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
949 | a0fb002c | Jan Kiszka | #endif
|
950 | a0fb002c | Jan Kiszka | |
951 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
952 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
953 | b0b1d690 | Jan Kiszka | |
954 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
955 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
956 | ff44f1a3 | Jan Kiszka | #endif
|
957 | ff44f1a3 | Jan Kiszka | |
958 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
959 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
960 | f1665b21 | Sheng Yang | #endif
|
961 | f1665b21 | Sheng Yang | |
962 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
963 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
964 | f1665b21 | Sheng Yang | #endif
|
965 | f1665b21 | Sheng Yang | |
966 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
967 | a426e122 | Jan Kiszka | if (ret < 0) { |
968 | 05330448 | aliguori | goto err;
|
969 | a426e122 | Jan Kiszka | } |
970 | 05330448 | aliguori | |
971 | 84b058d7 | Jan Kiszka | ret = kvm_irqchip_create(s); |
972 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
973 | 84b058d7 | Jan Kiszka | goto err;
|
974 | 84b058d7 | Jan Kiszka | } |
975 | 84b058d7 | Jan Kiszka | |
976 | 05330448 | aliguori | kvm_state = s; |
977 | a01672d3 | Avi Kivity | memory_listener_register(&kvm_memory_listener); |
978 | 05330448 | aliguori | |
979 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
980 | d2f2b8a7 | Stefan Hajnoczi | |
981 | aa7f74d1 | Jan Kiszka | cpu_interrupt_handler = kvm_handle_interrupt; |
982 | aa7f74d1 | Jan Kiszka | |
983 | 05330448 | aliguori | return 0; |
984 | 05330448 | aliguori | |
985 | 05330448 | aliguori | err:
|
986 | 05330448 | aliguori | if (s) {
|
987 | db9eae1c | Xu He Jie | if (s->vmfd >= 0) { |
988 | 05330448 | aliguori | close(s->vmfd); |
989 | a426e122 | Jan Kiszka | } |
990 | a426e122 | Jan Kiszka | if (s->fd != -1) { |
991 | 05330448 | aliguori | close(s->fd); |
992 | a426e122 | Jan Kiszka | } |
993 | 05330448 | aliguori | } |
994 | 7267c094 | Anthony Liguori | g_free(s); |
995 | 05330448 | aliguori | |
996 | 05330448 | aliguori | return ret;
|
997 | 05330448 | aliguori | } |
998 | 05330448 | aliguori | |
999 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1000 | b30e93e9 | Jan Kiszka | uint32_t count) |
1001 | 05330448 | aliguori | { |
1002 | 05330448 | aliguori | int i;
|
1003 | 05330448 | aliguori | uint8_t *ptr = data; |
1004 | 05330448 | aliguori | |
1005 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
1006 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
|
1007 | 05330448 | aliguori | switch (size) {
|
1008 | 05330448 | aliguori | case 1: |
1009 | afcea8cb | Blue Swirl | stb_p(ptr, cpu_inb(port)); |
1010 | 05330448 | aliguori | break;
|
1011 | 05330448 | aliguori | case 2: |
1012 | afcea8cb | Blue Swirl | stw_p(ptr, cpu_inw(port)); |
1013 | 05330448 | aliguori | break;
|
1014 | 05330448 | aliguori | case 4: |
1015 | afcea8cb | Blue Swirl | stl_p(ptr, cpu_inl(port)); |
1016 | 05330448 | aliguori | break;
|
1017 | 05330448 | aliguori | } |
1018 | 05330448 | aliguori | } else {
|
1019 | 05330448 | aliguori | switch (size) {
|
1020 | 05330448 | aliguori | case 1: |
1021 | afcea8cb | Blue Swirl | cpu_outb(port, ldub_p(ptr)); |
1022 | 05330448 | aliguori | break;
|
1023 | 05330448 | aliguori | case 2: |
1024 | afcea8cb | Blue Swirl | cpu_outw(port, lduw_p(ptr)); |
1025 | 05330448 | aliguori | break;
|
1026 | 05330448 | aliguori | case 4: |
1027 | afcea8cb | Blue Swirl | cpu_outl(port, ldl_p(ptr)); |
1028 | 05330448 | aliguori | break;
|
1029 | 05330448 | aliguori | } |
1030 | 05330448 | aliguori | } |
1031 | 05330448 | aliguori | |
1032 | 05330448 | aliguori | ptr += size; |
1033 | 05330448 | aliguori | } |
1034 | 05330448 | aliguori | } |
1035 | 05330448 | aliguori | |
1036 | 73aaec4a | Jan Kiszka | static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run) |
1037 | 7c80eef8 | Marcelo Tosatti | { |
1038 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
1039 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
1040 | 7c80eef8 | Marcelo Tosatti | int i;
|
1041 | 7c80eef8 | Marcelo Tosatti | |
1042 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
1043 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
1044 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
1045 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
1046 | 7c80eef8 | Marcelo Tosatti | } |
1047 | bb44e0d1 | Jan Kiszka | } else {
|
1048 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
1049 | 7c80eef8 | Marcelo Tosatti | } |
1050 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
1051 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
1052 | a426e122 | Jan Kiszka | if (!kvm_arch_stop_on_emulation_error(env)) {
|
1053 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1054 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
1055 | a426e122 | Jan Kiszka | } |
1056 | 7c80eef8 | Marcelo Tosatti | } |
1057 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
1058 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
1059 | 7c80eef8 | Marcelo Tosatti | */
|
1060 | 73aaec4a | Jan Kiszka | return -1; |
1061 | 7c80eef8 | Marcelo Tosatti | } |
1062 | 7c80eef8 | Marcelo Tosatti | |
1063 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
1064 | f65ed4c1 | aliguori | { |
1065 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
1066 | 1cae88b9 | Avi Kivity | |
1067 | 1cae88b9 | Avi Kivity | if (s->coalesced_flush_in_progress) {
|
1068 | 1cae88b9 | Avi Kivity | return;
|
1069 | 1cae88b9 | Avi Kivity | } |
1070 | 1cae88b9 | Avi Kivity | |
1071 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = true;
|
1072 | 1cae88b9 | Avi Kivity | |
1073 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
1074 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
1075 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
1076 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
1077 | f65ed4c1 | aliguori | |
1078 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
1079 | f65ed4c1 | aliguori | |
1080 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
1081 | 85199474 | Marcelo Tosatti | smp_wmb(); |
1082 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
1083 | f65ed4c1 | aliguori | } |
1084 | f65ed4c1 | aliguori | } |
1085 | 1cae88b9 | Avi Kivity | |
1086 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = false;
|
1087 | f65ed4c1 | aliguori | } |
1088 | f65ed4c1 | aliguori | |
1089 | 2705d56a | Jan Kiszka | static void do_kvm_cpu_synchronize_state(void *_env) |
1090 | 4c0960c0 | Avi Kivity | { |
1091 | 2705d56a | Jan Kiszka | CPUState *env = _env; |
1092 | 2705d56a | Jan Kiszka | |
1093 | 9ded2744 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
1094 | 4c0960c0 | Avi Kivity | kvm_arch_get_registers(env); |
1095 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
|
1096 | 4c0960c0 | Avi Kivity | } |
1097 | 4c0960c0 | Avi Kivity | } |
1098 | 4c0960c0 | Avi Kivity | |
1099 | 2705d56a | Jan Kiszka | void kvm_cpu_synchronize_state(CPUState *env)
|
1100 | 2705d56a | Jan Kiszka | { |
1101 | a426e122 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
1102 | 2705d56a | Jan Kiszka | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
1103 | a426e122 | Jan Kiszka | } |
1104 | 2705d56a | Jan Kiszka | } |
1105 | 2705d56a | Jan Kiszka | |
1106 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_reset(CPUState *env)
|
1107 | ea375f9a | Jan Kiszka | { |
1108 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
1109 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1110 | ea375f9a | Jan Kiszka | } |
1111 | ea375f9a | Jan Kiszka | |
1112 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_init(CPUState *env)
|
1113 | ea375f9a | Jan Kiszka | { |
1114 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
1115 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1116 | ea375f9a | Jan Kiszka | } |
1117 | ea375f9a | Jan Kiszka | |
1118 | 05330448 | aliguori | int kvm_cpu_exec(CPUState *env)
|
1119 | 05330448 | aliguori | { |
1120 | 05330448 | aliguori | struct kvm_run *run = env->kvm_run;
|
1121 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
1122 | 05330448 | aliguori | |
1123 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
1124 | 05330448 | aliguori | |
1125 | 99036865 | Jan Kiszka | if (kvm_arch_process_async_events(env)) {
|
1126 | 9ccfac9e | Jan Kiszka | env->exit_request = 0;
|
1127 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
1128 | 9ccfac9e | Jan Kiszka | } |
1129 | 0af691d7 | Marcelo Tosatti | |
1130 | 6792a57b | Jan Kiszka | cpu_single_env = env; |
1131 | 6792a57b | Jan Kiszka | |
1132 | 9ccfac9e | Jan Kiszka | do {
|
1133 | 9ded2744 | Jan Kiszka | if (env->kvm_vcpu_dirty) {
|
1134 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
1135 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1136 | 4c0960c0 | Avi Kivity | } |
1137 | 4c0960c0 | Avi Kivity | |
1138 | 8c14c173 | Jan Kiszka | kvm_arch_pre_run(env, run); |
1139 | 9ccfac9e | Jan Kiszka | if (env->exit_request) {
|
1140 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
1141 | 9ccfac9e | Jan Kiszka | /*
|
1142 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
1143 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
1144 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
1145 | 9ccfac9e | Jan Kiszka | */
|
1146 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
1147 | 9ccfac9e | Jan Kiszka | } |
1148 | 273faf1b | Marcelo Tosatti | cpu_single_env = NULL;
|
1149 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
1150 | 9ccfac9e | Jan Kiszka | |
1151 | 7cbb533f | Jan Kiszka | run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
|
1152 | 9ccfac9e | Jan Kiszka | |
1153 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
1154 | 273faf1b | Marcelo Tosatti | cpu_single_env = env; |
1155 | 05330448 | aliguori | kvm_arch_post_run(env, run); |
1156 | 05330448 | aliguori | |
1157 | b0c883b5 | Jan Kiszka | kvm_flush_coalesced_mmio_buffer(); |
1158 | b0c883b5 | Jan Kiszka | |
1159 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
1160 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
1161 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
1162 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1163 | dc77d341 | Jan Kiszka | break;
|
1164 | dc77d341 | Jan Kiszka | } |
1165 | 7b011fbc | Michael Ellerman | fprintf(stderr, "error: kvm run failed %s\n",
|
1166 | 7b011fbc | Michael Ellerman | strerror(-run_ret)); |
1167 | 05330448 | aliguori | abort(); |
1168 | 05330448 | aliguori | } |
1169 | 05330448 | aliguori | |
1170 | 05330448 | aliguori | switch (run->exit_reason) {
|
1171 | 05330448 | aliguori | case KVM_EXIT_IO:
|
1172 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
1173 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
1174 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
1175 | b30e93e9 | Jan Kiszka | run->io.direction, |
1176 | b30e93e9 | Jan Kiszka | run->io.size, |
1177 | b30e93e9 | Jan Kiszka | run->io.count); |
1178 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1179 | 05330448 | aliguori | break;
|
1180 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
1181 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
1182 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
1183 | 05330448 | aliguori | run->mmio.data, |
1184 | 05330448 | aliguori | run->mmio.len, |
1185 | 05330448 | aliguori | run->mmio.is_write); |
1186 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1187 | 05330448 | aliguori | break;
|
1188 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
1189 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
1190 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1191 | 05330448 | aliguori | break;
|
1192 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
1193 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
1194 | 05330448 | aliguori | qemu_system_reset_request(); |
1195 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1196 | 05330448 | aliguori | break;
|
1197 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
1198 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1199 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
1200 | 73aaec4a | Jan Kiszka | ret = -1;
|
1201 | 05330448 | aliguori | break;
|
1202 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
1203 | 73aaec4a | Jan Kiszka | ret = kvm_handle_internal_error(env, run); |
1204 | 7c80eef8 | Marcelo Tosatti | break;
|
1205 | 05330448 | aliguori | default:
|
1206 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
1207 | 05330448 | aliguori | ret = kvm_arch_handle_exit(env, run); |
1208 | 05330448 | aliguori | break;
|
1209 | 05330448 | aliguori | } |
1210 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
1211 | 05330448 | aliguori | |
1212 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
1213 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1214 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_INTERNAL_ERROR); |
1215 | becfc390 | aliguori | } |
1216 | becfc390 | aliguori | |
1217 | 6792a57b | Jan Kiszka | env->exit_request = 0;
|
1218 | 6792a57b | Jan Kiszka | cpu_single_env = NULL;
|
1219 | 05330448 | aliguori | return ret;
|
1220 | 05330448 | aliguori | } |
1221 | 05330448 | aliguori | |
1222 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1223 | 05330448 | aliguori | { |
1224 | 05330448 | aliguori | int ret;
|
1225 | 984b5181 | aliguori | void *arg;
|
1226 | 984b5181 | aliguori | va_list ap; |
1227 | 05330448 | aliguori | |
1228 | 984b5181 | aliguori | va_start(ap, type); |
1229 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1230 | 984b5181 | aliguori | va_end(ap); |
1231 | 984b5181 | aliguori | |
1232 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1233 | a426e122 | Jan Kiszka | if (ret == -1) { |
1234 | 05330448 | aliguori | ret = -errno; |
1235 | a426e122 | Jan Kiszka | } |
1236 | 05330448 | aliguori | return ret;
|
1237 | 05330448 | aliguori | } |
1238 | 05330448 | aliguori | |
1239 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1240 | 05330448 | aliguori | { |
1241 | 05330448 | aliguori | int ret;
|
1242 | 984b5181 | aliguori | void *arg;
|
1243 | 984b5181 | aliguori | va_list ap; |
1244 | 984b5181 | aliguori | |
1245 | 984b5181 | aliguori | va_start(ap, type); |
1246 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1247 | 984b5181 | aliguori | va_end(ap); |
1248 | 05330448 | aliguori | |
1249 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1250 | a426e122 | Jan Kiszka | if (ret == -1) { |
1251 | 05330448 | aliguori | ret = -errno; |
1252 | a426e122 | Jan Kiszka | } |
1253 | 05330448 | aliguori | return ret;
|
1254 | 05330448 | aliguori | } |
1255 | 05330448 | aliguori | |
1256 | 984b5181 | aliguori | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
1257 | 05330448 | aliguori | { |
1258 | 05330448 | aliguori | int ret;
|
1259 | 984b5181 | aliguori | void *arg;
|
1260 | 984b5181 | aliguori | va_list ap; |
1261 | 984b5181 | aliguori | |
1262 | 984b5181 | aliguori | va_start(ap, type); |
1263 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1264 | 984b5181 | aliguori | va_end(ap); |
1265 | 05330448 | aliguori | |
1266 | 984b5181 | aliguori | ret = ioctl(env->kvm_fd, type, arg); |
1267 | a426e122 | Jan Kiszka | if (ret == -1) { |
1268 | 05330448 | aliguori | ret = -errno; |
1269 | a426e122 | Jan Kiszka | } |
1270 | 05330448 | aliguori | return ret;
|
1271 | 05330448 | aliguori | } |
1272 | bd322087 | aliguori | |
1273 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1274 | bd322087 | aliguori | { |
1275 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1276 | bd322087 | aliguori | } |
1277 | e22a25c9 | aliguori | |
1278 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1279 | a0fb002c | Jan Kiszka | { |
1280 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1281 | a0fb002c | Jan Kiszka | } |
1282 | a0fb002c | Jan Kiszka | |
1283 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1284 | b0b1d690 | Jan Kiszka | { |
1285 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1286 | b0b1d690 | Jan Kiszka | } |
1287 | b0b1d690 | Jan Kiszka | |
1288 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1289 | ff44f1a3 | Jan Kiszka | { |
1290 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1291 | ff44f1a3 | Jan Kiszka | } |
1292 | ff44f1a3 | Jan Kiszka | |
1293 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1294 | f1665b21 | Sheng Yang | { |
1295 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1296 | f1665b21 | Sheng Yang | } |
1297 | f1665b21 | Sheng Yang | |
1298 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1299 | f1665b21 | Sheng Yang | { |
1300 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1301 | f1665b21 | Sheng Yang | } |
1302 | f1665b21 | Sheng Yang | |
1303 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1304 | d2f2b8a7 | Stefan Hajnoczi | { |
1305 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1306 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1307 | d2f2b8a7 | Stefan Hajnoczi | } |
1308 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1309 | d2f2b8a7 | Stefan Hajnoczi | } |
1310 | d2f2b8a7 | Stefan Hajnoczi | |
1311 | 84b058d7 | Jan Kiszka | int kvm_has_gsi_routing(void) |
1312 | 84b058d7 | Jan Kiszka | { |
1313 | a9c5eb0d | Alexander Graf | #ifdef KVM_CAP_IRQ_ROUTING
|
1314 | 84b058d7 | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
|
1315 | a9c5eb0d | Alexander Graf | #else
|
1316 | a9c5eb0d | Alexander Graf | return false; |
1317 | a9c5eb0d | Alexander Graf | #endif
|
1318 | 84b058d7 | Jan Kiszka | } |
1319 | 84b058d7 | Jan Kiszka | |
1320 | 9b5b76d4 | Jan Kiszka | int kvm_allows_irq0_override(void) |
1321 | 9b5b76d4 | Jan Kiszka | { |
1322 | 3d4b2649 | Jan Kiszka | return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing();
|
1323 | 9b5b76d4 | Jan Kiszka | } |
1324 | 9b5b76d4 | Jan Kiszka | |
1325 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1326 | 6f0437e8 | Jan Kiszka | { |
1327 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1328 | e78815a5 | Andreas Fรคrber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1329 | 6f0437e8 | Jan Kiszka | |
1330 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1331 | e78815a5 | Andreas Fรคrber | perror("qemu_madvise");
|
1332 | e78815a5 | Andreas Fรคrber | fprintf(stderr, |
1333 | e78815a5 | Andreas Fรคrber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1334 | 6f0437e8 | Jan Kiszka | exit(1);
|
1335 | 6f0437e8 | Jan Kiszka | } |
1336 | 6f0437e8 | Jan Kiszka | } |
1337 | 6f0437e8 | Jan Kiszka | } |
1338 | 6f0437e8 | Jan Kiszka | |
1339 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1340 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
|
1341 | e22a25c9 | aliguori | target_ulong pc) |
1342 | e22a25c9 | aliguori | { |
1343 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1344 | e22a25c9 | aliguori | |
1345 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
1346 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1347 | e22a25c9 | aliguori | return bp;
|
1348 | a426e122 | Jan Kiszka | } |
1349 | e22a25c9 | aliguori | } |
1350 | e22a25c9 | aliguori | return NULL; |
1351 | e22a25c9 | aliguori | } |
1352 | e22a25c9 | aliguori | |
1353 | e22a25c9 | aliguori | int kvm_sw_breakpoints_active(CPUState *env)
|
1354 | e22a25c9 | aliguori | { |
1355 | 72cf2d4f | Blue Swirl | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
|
1356 | e22a25c9 | aliguori | } |
1357 | e22a25c9 | aliguori | |
1358 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1359 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1360 | 452e4751 | Glauber Costa | CPUState *env; |
1361 | 452e4751 | Glauber Costa | int err;
|
1362 | 452e4751 | Glauber Costa | }; |
1363 | 452e4751 | Glauber Costa | |
1364 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1365 | 452e4751 | Glauber Costa | { |
1366 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1367 | b3807725 | Jan Kiszka | CPUState *env = dbg_data->env; |
1368 | b3807725 | Jan Kiszka | |
1369 | b3807725 | Jan Kiszka | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
1370 | 452e4751 | Glauber Costa | } |
1371 | 452e4751 | Glauber Costa | |
1372 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1373 | e22a25c9 | aliguori | { |
1374 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1375 | e22a25c9 | aliguori | |
1376 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1377 | e22a25c9 | aliguori | |
1378 | b0b1d690 | Jan Kiszka | if (env->singlestep_enabled) {
|
1379 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1380 | b0b1d690 | Jan Kiszka | } |
1381 | 452e4751 | Glauber Costa | kvm_arch_update_guest_debug(env, &data.dbg); |
1382 | 452e4751 | Glauber Costa | data.env = env; |
1383 | e22a25c9 | aliguori | |
1384 | be41cbe0 | Jan Kiszka | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
1385 | 452e4751 | Glauber Costa | return data.err;
|
1386 | e22a25c9 | aliguori | } |
1387 | e22a25c9 | aliguori | |
1388 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1389 | e22a25c9 | aliguori | target_ulong len, int type)
|
1390 | e22a25c9 | aliguori | { |
1391 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1392 | e22a25c9 | aliguori | CPUState *env; |
1393 | e22a25c9 | aliguori | int err;
|
1394 | e22a25c9 | aliguori | |
1395 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1396 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1397 | e22a25c9 | aliguori | if (bp) {
|
1398 | e22a25c9 | aliguori | bp->use_count++; |
1399 | e22a25c9 | aliguori | return 0; |
1400 | e22a25c9 | aliguori | } |
1401 | e22a25c9 | aliguori | |
1402 | 7267c094 | Anthony Liguori | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
1403 | a426e122 | Jan Kiszka | if (!bp) {
|
1404 | e22a25c9 | aliguori | return -ENOMEM;
|
1405 | a426e122 | Jan Kiszka | } |
1406 | e22a25c9 | aliguori | |
1407 | e22a25c9 | aliguori | bp->pc = addr; |
1408 | e22a25c9 | aliguori | bp->use_count = 1;
|
1409 | e22a25c9 | aliguori | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
1410 | e22a25c9 | aliguori | if (err) {
|
1411 | 7267c094 | Anthony Liguori | g_free(bp); |
1412 | e22a25c9 | aliguori | return err;
|
1413 | e22a25c9 | aliguori | } |
1414 | e22a25c9 | aliguori | |
1415 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
1416 | e22a25c9 | aliguori | bp, entry); |
1417 | e22a25c9 | aliguori | } else {
|
1418 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1419 | a426e122 | Jan Kiszka | if (err) {
|
1420 | e22a25c9 | aliguori | return err;
|
1421 | a426e122 | Jan Kiszka | } |
1422 | e22a25c9 | aliguori | } |
1423 | e22a25c9 | aliguori | |
1424 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1425 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1426 | a426e122 | Jan Kiszka | if (err) {
|
1427 | e22a25c9 | aliguori | return err;
|
1428 | a426e122 | Jan Kiszka | } |
1429 | e22a25c9 | aliguori | } |
1430 | e22a25c9 | aliguori | return 0; |
1431 | e22a25c9 | aliguori | } |
1432 | e22a25c9 | aliguori | |
1433 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1434 | e22a25c9 | aliguori | target_ulong len, int type)
|
1435 | e22a25c9 | aliguori | { |
1436 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1437 | e22a25c9 | aliguori | CPUState *env; |
1438 | e22a25c9 | aliguori | int err;
|
1439 | e22a25c9 | aliguori | |
1440 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1441 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1442 | a426e122 | Jan Kiszka | if (!bp) {
|
1443 | e22a25c9 | aliguori | return -ENOENT;
|
1444 | a426e122 | Jan Kiszka | } |
1445 | e22a25c9 | aliguori | |
1446 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1447 | e22a25c9 | aliguori | bp->use_count--; |
1448 | e22a25c9 | aliguori | return 0; |
1449 | e22a25c9 | aliguori | } |
1450 | e22a25c9 | aliguori | |
1451 | e22a25c9 | aliguori | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
1452 | a426e122 | Jan Kiszka | if (err) {
|
1453 | e22a25c9 | aliguori | return err;
|
1454 | a426e122 | Jan Kiszka | } |
1455 | e22a25c9 | aliguori | |
1456 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
1457 | 7267c094 | Anthony Liguori | g_free(bp); |
1458 | e22a25c9 | aliguori | } else {
|
1459 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1460 | a426e122 | Jan Kiszka | if (err) {
|
1461 | e22a25c9 | aliguori | return err;
|
1462 | a426e122 | Jan Kiszka | } |
1463 | e22a25c9 | aliguori | } |
1464 | e22a25c9 | aliguori | |
1465 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1466 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1467 | a426e122 | Jan Kiszka | if (err) {
|
1468 | e22a25c9 | aliguori | return err;
|
1469 | a426e122 | Jan Kiszka | } |
1470 | e22a25c9 | aliguori | } |
1471 | e22a25c9 | aliguori | return 0; |
1472 | e22a25c9 | aliguori | } |
1473 | e22a25c9 | aliguori | |
1474 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1475 | e22a25c9 | aliguori | { |
1476 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1477 | e22a25c9 | aliguori | KVMState *s = current_env->kvm_state; |
1478 | e22a25c9 | aliguori | CPUState *env; |
1479 | e22a25c9 | aliguori | |
1480 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1481 | e22a25c9 | aliguori | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
1482 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1483 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1484 | a426e122 | Jan Kiszka | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
1485 | e22a25c9 | aliguori | break;
|
1486 | a426e122 | Jan Kiszka | } |
1487 | e22a25c9 | aliguori | } |
1488 | e22a25c9 | aliguori | } |
1489 | e22a25c9 | aliguori | } |
1490 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
1491 | e22a25c9 | aliguori | |
1492 | a426e122 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1493 | e22a25c9 | aliguori | kvm_update_guest_debug(env, 0);
|
1494 | a426e122 | Jan Kiszka | } |
1495 | e22a25c9 | aliguori | } |
1496 | e22a25c9 | aliguori | |
1497 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
1498 | e22a25c9 | aliguori | |
1499 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1500 | e22a25c9 | aliguori | { |
1501 | e22a25c9 | aliguori | return -EINVAL;
|
1502 | e22a25c9 | aliguori | } |
1503 | e22a25c9 | aliguori | |
1504 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1505 | e22a25c9 | aliguori | target_ulong len, int type)
|
1506 | e22a25c9 | aliguori | { |
1507 | e22a25c9 | aliguori | return -EINVAL;
|
1508 | e22a25c9 | aliguori | } |
1509 | e22a25c9 | aliguori | |
1510 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1511 | e22a25c9 | aliguori | target_ulong len, int type)
|
1512 | e22a25c9 | aliguori | { |
1513 | e22a25c9 | aliguori | return -EINVAL;
|
1514 | e22a25c9 | aliguori | } |
1515 | e22a25c9 | aliguori | |
1516 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1517 | e22a25c9 | aliguori | { |
1518 | e22a25c9 | aliguori | } |
1519 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
1520 | cc84de95 | Marcelo Tosatti | |
1521 | cc84de95 | Marcelo Tosatti | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) |
1522 | cc84de95 | Marcelo Tosatti | { |
1523 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
1524 | cc84de95 | Marcelo Tosatti | int r;
|
1525 | cc84de95 | Marcelo Tosatti | |
1526 | a426e122 | Jan Kiszka | if (!sigset) {
|
1527 | cc84de95 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
1528 | a426e122 | Jan Kiszka | } |
1529 | cc84de95 | Marcelo Tosatti | |
1530 | 7267c094 | Anthony Liguori | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
1531 | cc84de95 | Marcelo Tosatti | |
1532 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
1533 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
1534 | cc84de95 | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
1535 | 7267c094 | Anthony Liguori | g_free(sigmask); |
1536 | cc84de95 | Marcelo Tosatti | |
1537 | cc84de95 | Marcelo Tosatti | return r;
|
1538 | cc84de95 | Marcelo Tosatti | } |
1539 | ca821806 | Michael S. Tsirkin | |
1540 | 44f1a3d8 | Cam Macdonell | int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign) |
1541 | 44f1a3d8 | Cam Macdonell | { |
1542 | 44f1a3d8 | Cam Macdonell | int ret;
|
1543 | 44f1a3d8 | Cam Macdonell | struct kvm_ioeventfd iofd;
|
1544 | 44f1a3d8 | Cam Macdonell | |
1545 | 44f1a3d8 | Cam Macdonell | iofd.datamatch = val; |
1546 | 44f1a3d8 | Cam Macdonell | iofd.addr = addr; |
1547 | 44f1a3d8 | Cam Macdonell | iofd.len = 4;
|
1548 | 44f1a3d8 | Cam Macdonell | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
1549 | 44f1a3d8 | Cam Macdonell | iofd.fd = fd; |
1550 | 44f1a3d8 | Cam Macdonell | |
1551 | 44f1a3d8 | Cam Macdonell | if (!kvm_enabled()) {
|
1552 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1553 | 44f1a3d8 | Cam Macdonell | } |
1554 | 44f1a3d8 | Cam Macdonell | |
1555 | 44f1a3d8 | Cam Macdonell | if (!assign) {
|
1556 | 44f1a3d8 | Cam Macdonell | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1557 | 44f1a3d8 | Cam Macdonell | } |
1558 | 44f1a3d8 | Cam Macdonell | |
1559 | 44f1a3d8 | Cam Macdonell | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
1560 | 44f1a3d8 | Cam Macdonell | |
1561 | 44f1a3d8 | Cam Macdonell | if (ret < 0) { |
1562 | 44f1a3d8 | Cam Macdonell | return -errno;
|
1563 | 44f1a3d8 | Cam Macdonell | } |
1564 | 44f1a3d8 | Cam Macdonell | |
1565 | 44f1a3d8 | Cam Macdonell | return 0; |
1566 | 44f1a3d8 | Cam Macdonell | } |
1567 | 44f1a3d8 | Cam Macdonell | |
1568 | ca821806 | Michael S. Tsirkin | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
1569 | ca821806 | Michael S. Tsirkin | { |
1570 | ca821806 | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
1571 | ca821806 | Michael S. Tsirkin | .datamatch = val, |
1572 | ca821806 | Michael S. Tsirkin | .addr = addr, |
1573 | ca821806 | Michael S. Tsirkin | .len = 2,
|
1574 | ca821806 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
1575 | ca821806 | Michael S. Tsirkin | .fd = fd, |
1576 | ca821806 | Michael S. Tsirkin | }; |
1577 | ca821806 | Michael S. Tsirkin | int r;
|
1578 | a426e122 | Jan Kiszka | if (!kvm_enabled()) {
|
1579 | ca821806 | Michael S. Tsirkin | return -ENOSYS;
|
1580 | a426e122 | Jan Kiszka | } |
1581 | a426e122 | Jan Kiszka | if (!assign) {
|
1582 | ca821806 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1583 | a426e122 | Jan Kiszka | } |
1584 | ca821806 | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
1585 | a426e122 | Jan Kiszka | if (r < 0) { |
1586 | ca821806 | Michael S. Tsirkin | return r;
|
1587 | a426e122 | Jan Kiszka | } |
1588 | ca821806 | Michael S. Tsirkin | return 0; |
1589 | 98c8573e | Paolo Bonzini | } |
1590 | a1b87fe0 | Jan Kiszka | |
1591 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr) |
1592 | a1b87fe0 | Jan Kiszka | { |
1593 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus_vcpu(env, code, addr);
|
1594 | a1b87fe0 | Jan Kiszka | } |
1595 | a1b87fe0 | Jan Kiszka | |
1596 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
1597 | a1b87fe0 | Jan Kiszka | { |
1598 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
1599 | a1b87fe0 | Jan Kiszka | } |