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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 | 80a1ea37 | Avi Kivity | #include "exec-memory.h" |
32 | 05330448 | aliguori | |
33 | d2f2b8a7 | Stefan Hajnoczi | /* This check must be after config-host.h is included */
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34 | d2f2b8a7 | Stefan Hajnoczi | #ifdef CONFIG_EVENTFD
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35 | d2f2b8a7 | Stefan Hajnoczi | #include <sys/eventfd.h> |
36 | d2f2b8a7 | Stefan Hajnoczi | #endif
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37 | d2f2b8a7 | Stefan Hajnoczi | |
38 | 93148aa5 | Stefan Weil | /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */
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39 | f65ed4c1 | aliguori | #define PAGE_SIZE TARGET_PAGE_SIZE
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40 | f65ed4c1 | aliguori | |
41 | 05330448 | aliguori | //#define DEBUG_KVM
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42 | 05330448 | aliguori | |
43 | 05330448 | aliguori | #ifdef DEBUG_KVM
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44 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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45 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
46 | 05330448 | aliguori | #else
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47 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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48 | 05330448 | aliguori | do { } while (0) |
49 | 05330448 | aliguori | #endif
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50 | 05330448 | aliguori | |
51 | 34fc643f | aliguori | typedef struct KVMSlot |
52 | 34fc643f | aliguori | { |
53 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr; |
54 | c227f099 | Anthony Liguori | ram_addr_t memory_size; |
55 | 9f213ed9 | Avi Kivity | void *ram;
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56 | 34fc643f | aliguori | int slot;
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57 | 34fc643f | aliguori | int flags;
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58 | 34fc643f | aliguori | } KVMSlot; |
59 | 05330448 | aliguori | |
60 | 5832d1f2 | aliguori | typedef struct kvm_dirty_log KVMDirtyLog; |
61 | 5832d1f2 | aliguori | |
62 | 05330448 | aliguori | struct KVMState
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63 | 05330448 | aliguori | { |
64 | 05330448 | aliguori | KVMSlot slots[32];
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65 | 05330448 | aliguori | int fd;
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66 | 05330448 | aliguori | int vmfd;
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67 | f65ed4c1 | aliguori | int coalesced_mmio;
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68 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
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69 | 1cae88b9 | Avi Kivity | bool coalesced_flush_in_progress;
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70 | e69917e2 | Jan Kiszka | int broken_set_mem_region;
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71 | 4495d6a7 | Jan Kiszka | int migration_log;
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72 | a0fb002c | Jan Kiszka | int vcpu_events;
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73 | b0b1d690 | Jan Kiszka | int robust_singlestep;
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74 | ff44f1a3 | Jan Kiszka | int debugregs;
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75 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
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76 | e22a25c9 | aliguori | struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
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77 | e22a25c9 | aliguori | #endif
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78 | 6f725c13 | Glauber Costa | int pit_in_kernel;
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79 | f1665b21 | Sheng Yang | int xsave, xcrs;
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80 | d2f2b8a7 | Stefan Hajnoczi | int many_ioeventfds;
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81 | 84b058d7 | Jan Kiszka | int irqchip_inject_ioctl;
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82 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
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83 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing *irq_routes;
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84 | 84b058d7 | Jan Kiszka | int nr_allocated_irq_routes;
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85 | 84b058d7 | Jan Kiszka | uint32_t *used_gsi_bitmap; |
86 | 84b058d7 | Jan Kiszka | unsigned int max_gsi; |
87 | 84b058d7 | Jan Kiszka | #endif
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88 | 05330448 | aliguori | }; |
89 | 05330448 | aliguori | |
90 | 6a7af8cb | Jan Kiszka | KVMState *kvm_state; |
91 | 3d4b2649 | Jan Kiszka | bool kvm_kernel_irqchip;
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92 | 05330448 | aliguori | |
93 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
94 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(USER_MEMORY), |
95 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
96 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
97 | 94a8d39a | Jan Kiszka | }; |
98 | 94a8d39a | Jan Kiszka | |
99 | 05330448 | aliguori | static KVMSlot *kvm_alloc_slot(KVMState *s)
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100 | 05330448 | aliguori | { |
101 | 05330448 | aliguori | int i;
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102 | 05330448 | aliguori | |
103 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
104 | a426e122 | Jan Kiszka | if (s->slots[i].memory_size == 0) { |
105 | 05330448 | aliguori | return &s->slots[i];
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106 | a426e122 | Jan Kiszka | } |
107 | 05330448 | aliguori | } |
108 | 05330448 | aliguori | |
109 | d3f8d37f | aliguori | fprintf(stderr, "%s: no free slot available\n", __func__);
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110 | d3f8d37f | aliguori | abort(); |
111 | d3f8d37f | aliguori | } |
112 | d3f8d37f | aliguori | |
113 | d3f8d37f | aliguori | static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
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114 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
115 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
116 | d3f8d37f | aliguori | { |
117 | d3f8d37f | aliguori | int i;
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118 | d3f8d37f | aliguori | |
119 | d3f8d37f | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
120 | d3f8d37f | aliguori | KVMSlot *mem = &s->slots[i]; |
121 | d3f8d37f | aliguori | |
122 | d3f8d37f | aliguori | if (start_addr == mem->start_addr &&
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123 | d3f8d37f | aliguori | end_addr == mem->start_addr + mem->memory_size) { |
124 | d3f8d37f | aliguori | return mem;
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125 | d3f8d37f | aliguori | } |
126 | d3f8d37f | aliguori | } |
127 | d3f8d37f | aliguori | |
128 | 05330448 | aliguori | return NULL; |
129 | 05330448 | aliguori | } |
130 | 05330448 | aliguori | |
131 | 6152e2ae | aliguori | /*
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132 | 6152e2ae | aliguori | * Find overlapping slot with lowest start address
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133 | 6152e2ae | aliguori | */
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134 | 6152e2ae | aliguori | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
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135 | c227f099 | Anthony Liguori | target_phys_addr_t start_addr, |
136 | c227f099 | Anthony Liguori | target_phys_addr_t end_addr) |
137 | 05330448 | aliguori | { |
138 | 6152e2ae | aliguori | KVMSlot *found = NULL;
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139 | 05330448 | aliguori | int i;
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140 | 05330448 | aliguori | |
141 | 05330448 | aliguori | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
142 | 05330448 | aliguori | KVMSlot *mem = &s->slots[i]; |
143 | 05330448 | aliguori | |
144 | 6152e2ae | aliguori | if (mem->memory_size == 0 || |
145 | 6152e2ae | aliguori | (found && found->start_addr < mem->start_addr)) { |
146 | 6152e2ae | aliguori | continue;
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147 | 6152e2ae | aliguori | } |
148 | 6152e2ae | aliguori | |
149 | 6152e2ae | aliguori | if (end_addr > mem->start_addr &&
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150 | 6152e2ae | aliguori | start_addr < mem->start_addr + mem->memory_size) { |
151 | 6152e2ae | aliguori | found = mem; |
152 | 6152e2ae | aliguori | } |
153 | 05330448 | aliguori | } |
154 | 05330448 | aliguori | |
155 | 6152e2ae | aliguori | return found;
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156 | 05330448 | aliguori | } |
157 | 05330448 | aliguori | |
158 | 9f213ed9 | Avi Kivity | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
159 | 9f213ed9 | Avi Kivity | target_phys_addr_t *phys_addr) |
160 | 983dfc3b | Huang Ying | { |
161 | 983dfc3b | Huang Ying | int i;
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162 | 983dfc3b | Huang Ying | |
163 | 983dfc3b | Huang Ying | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
164 | 983dfc3b | Huang Ying | KVMSlot *mem = &s->slots[i]; |
165 | 983dfc3b | Huang Ying | |
166 | 9f213ed9 | Avi Kivity | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
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167 | 9f213ed9 | Avi Kivity | *phys_addr = mem->start_addr + (ram - mem->ram); |
168 | 983dfc3b | Huang Ying | return 1; |
169 | 983dfc3b | Huang Ying | } |
170 | 983dfc3b | Huang Ying | } |
171 | 983dfc3b | Huang Ying | |
172 | 983dfc3b | Huang Ying | return 0; |
173 | 983dfc3b | Huang Ying | } |
174 | 983dfc3b | Huang Ying | |
175 | 5832d1f2 | aliguori | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
176 | 5832d1f2 | aliguori | { |
177 | 5832d1f2 | aliguori | struct kvm_userspace_memory_region mem;
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178 | 5832d1f2 | aliguori | |
179 | 5832d1f2 | aliguori | mem.slot = slot->slot; |
180 | 5832d1f2 | aliguori | mem.guest_phys_addr = slot->start_addr; |
181 | 5832d1f2 | aliguori | mem.memory_size = slot->memory_size; |
182 | 9f213ed9 | Avi Kivity | mem.userspace_addr = (unsigned long)slot->ram; |
183 | 5832d1f2 | aliguori | mem.flags = slot->flags; |
184 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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185 | 4495d6a7 | Jan Kiszka | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
186 | 4495d6a7 | Jan Kiszka | } |
187 | 5832d1f2 | aliguori | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
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188 | 5832d1f2 | aliguori | } |
189 | 5832d1f2 | aliguori | |
190 | 8d2ba1fb | Jan Kiszka | static void kvm_reset_vcpu(void *opaque) |
191 | 8d2ba1fb | Jan Kiszka | { |
192 | 8d2ba1fb | Jan Kiszka | CPUState *env = opaque; |
193 | 8d2ba1fb | Jan Kiszka | |
194 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
195 | 8d2ba1fb | Jan Kiszka | } |
196 | 5832d1f2 | aliguori | |
197 | 6f725c13 | Glauber Costa | int kvm_pit_in_kernel(void) |
198 | 6f725c13 | Glauber Costa | { |
199 | 6f725c13 | Glauber Costa | return kvm_state->pit_in_kernel;
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200 | 6f725c13 | Glauber Costa | } |
201 | 6f725c13 | Glauber Costa | |
202 | 05330448 | aliguori | int kvm_init_vcpu(CPUState *env)
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203 | 05330448 | aliguori | { |
204 | 05330448 | aliguori | KVMState *s = kvm_state; |
205 | 05330448 | aliguori | long mmap_size;
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206 | 05330448 | aliguori | int ret;
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207 | 05330448 | aliguori | |
208 | 8c0d577e | Blue Swirl | DPRINTF("kvm_init_vcpu\n");
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209 | 05330448 | aliguori | |
210 | 984b5181 | aliguori | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
211 | 05330448 | aliguori | if (ret < 0) { |
212 | 8c0d577e | Blue Swirl | DPRINTF("kvm_create_vcpu failed\n");
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213 | 05330448 | aliguori | goto err;
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214 | 05330448 | aliguori | } |
215 | 05330448 | aliguori | |
216 | 05330448 | aliguori | env->kvm_fd = ret; |
217 | 05330448 | aliguori | env->kvm_state = s; |
218 | d841b6c4 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
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219 | 05330448 | aliguori | |
220 | 05330448 | aliguori | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
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221 | 05330448 | aliguori | if (mmap_size < 0) { |
222 | 748a680b | Jan Kiszka | ret = mmap_size; |
223 | 8c0d577e | Blue Swirl | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
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224 | 05330448 | aliguori | goto err;
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225 | 05330448 | aliguori | } |
226 | 05330448 | aliguori | |
227 | 05330448 | aliguori | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
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228 | 05330448 | aliguori | env->kvm_fd, 0);
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229 | 05330448 | aliguori | if (env->kvm_run == MAP_FAILED) {
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230 | 05330448 | aliguori | ret = -errno; |
231 | 8c0d577e | Blue Swirl | DPRINTF("mmap'ing vcpu state failed\n");
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232 | 05330448 | aliguori | goto err;
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233 | 05330448 | aliguori | } |
234 | 05330448 | aliguori | |
235 | a426e122 | Jan Kiszka | if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
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236 | a426e122 | Jan Kiszka | s->coalesced_mmio_ring = |
237 | a426e122 | Jan Kiszka | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE;
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238 | a426e122 | Jan Kiszka | } |
239 | 62a2744c | Sheng Yang | |
240 | 05330448 | aliguori | ret = kvm_arch_init_vcpu(env); |
241 | 8d2ba1fb | Jan Kiszka | if (ret == 0) { |
242 | a08d4367 | Jan Kiszka | qemu_register_reset(kvm_reset_vcpu, env); |
243 | caa5af0f | Jan Kiszka | kvm_arch_reset_vcpu(env); |
244 | 8d2ba1fb | Jan Kiszka | } |
245 | 05330448 | aliguori | err:
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246 | 05330448 | aliguori | return ret;
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247 | 05330448 | aliguori | } |
248 | 05330448 | aliguori | |
249 | 5832d1f2 | aliguori | /*
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250 | 5832d1f2 | aliguori | * dirty pages logging control
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251 | 5832d1f2 | aliguori | */
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252 | 25254bbc | Michael S. Tsirkin | |
253 | 25254bbc | Michael S. Tsirkin | static int kvm_mem_flags(KVMState *s, bool log_dirty) |
254 | 25254bbc | Michael S. Tsirkin | { |
255 | 25254bbc | Michael S. Tsirkin | return log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0; |
256 | 25254bbc | Michael S. Tsirkin | } |
257 | 25254bbc | Michael S. Tsirkin | |
258 | 25254bbc | Michael S. Tsirkin | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
259 | 5832d1f2 | aliguori | { |
260 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
261 | 25254bbc | Michael S. Tsirkin | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
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262 | 4495d6a7 | Jan Kiszka | int old_flags;
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263 | 4495d6a7 | Jan Kiszka | |
264 | 4495d6a7 | Jan Kiszka | old_flags = mem->flags; |
265 | 5832d1f2 | aliguori | |
266 | 25254bbc | Michael S. Tsirkin | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty); |
267 | 5832d1f2 | aliguori | mem->flags = flags; |
268 | 5832d1f2 | aliguori | |
269 | 4495d6a7 | Jan Kiszka | /* If nothing changed effectively, no need to issue ioctl */
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270 | 4495d6a7 | Jan Kiszka | if (s->migration_log) {
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271 | 4495d6a7 | Jan Kiszka | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
272 | 4495d6a7 | Jan Kiszka | } |
273 | 25254bbc | Michael S. Tsirkin | |
274 | 4495d6a7 | Jan Kiszka | if (flags == old_flags) {
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275 | 25254bbc | Michael S. Tsirkin | return 0; |
276 | 4495d6a7 | Jan Kiszka | } |
277 | 4495d6a7 | Jan Kiszka | |
278 | 5832d1f2 | aliguori | return kvm_set_user_memory_region(s, mem);
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279 | 5832d1f2 | aliguori | } |
280 | 5832d1f2 | aliguori | |
281 | 25254bbc | Michael S. Tsirkin | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
282 | 25254bbc | Michael S. Tsirkin | ram_addr_t size, bool log_dirty)
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283 | 25254bbc | Michael S. Tsirkin | { |
284 | 25254bbc | Michael S. Tsirkin | KVMState *s = kvm_state; |
285 | 25254bbc | Michael S. Tsirkin | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
286 | 25254bbc | Michael S. Tsirkin | |
287 | 25254bbc | Michael S. Tsirkin | if (mem == NULL) { |
288 | 25254bbc | Michael S. Tsirkin | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
289 | 25254bbc | Michael S. Tsirkin | TARGET_FMT_plx "\n", __func__, phys_addr,
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290 | 25254bbc | Michael S. Tsirkin | (target_phys_addr_t)(phys_addr + size - 1));
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291 | 25254bbc | Michael S. Tsirkin | return -EINVAL;
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292 | 25254bbc | Michael S. Tsirkin | } |
293 | 25254bbc | Michael S. Tsirkin | return kvm_slot_dirty_pages_log_change(mem, log_dirty);
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294 | 25254bbc | Michael S. Tsirkin | } |
295 | 25254bbc | Michael S. Tsirkin | |
296 | a01672d3 | Avi Kivity | static void kvm_log_start(MemoryListener *listener, |
297 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
298 | 5832d1f2 | aliguori | { |
299 | a01672d3 | Avi Kivity | int r;
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300 | a01672d3 | Avi Kivity | |
301 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
302 | a01672d3 | Avi Kivity | section->size, true);
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303 | a01672d3 | Avi Kivity | if (r < 0) { |
304 | a01672d3 | Avi Kivity | abort(); |
305 | a01672d3 | Avi Kivity | } |
306 | 5832d1f2 | aliguori | } |
307 | 5832d1f2 | aliguori | |
308 | a01672d3 | Avi Kivity | static void kvm_log_stop(MemoryListener *listener, |
309 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
310 | 5832d1f2 | aliguori | { |
311 | a01672d3 | Avi Kivity | int r;
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312 | a01672d3 | Avi Kivity | |
313 | a01672d3 | Avi Kivity | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
314 | a01672d3 | Avi Kivity | section->size, false);
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315 | a01672d3 | Avi Kivity | if (r < 0) { |
316 | a01672d3 | Avi Kivity | abort(); |
317 | a01672d3 | Avi Kivity | } |
318 | 5832d1f2 | aliguori | } |
319 | 5832d1f2 | aliguori | |
320 | 7b8f3b78 | Michael S. Tsirkin | static int kvm_set_migration_log(int enable) |
321 | 4495d6a7 | Jan Kiszka | { |
322 | 4495d6a7 | Jan Kiszka | KVMState *s = kvm_state; |
323 | 4495d6a7 | Jan Kiszka | KVMSlot *mem; |
324 | 4495d6a7 | Jan Kiszka | int i, err;
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325 | 4495d6a7 | Jan Kiszka | |
326 | 4495d6a7 | Jan Kiszka | s->migration_log = enable; |
327 | 4495d6a7 | Jan Kiszka | |
328 | 4495d6a7 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
329 | 4495d6a7 | Jan Kiszka | mem = &s->slots[i]; |
330 | 4495d6a7 | Jan Kiszka | |
331 | 70fedd76 | Alex Williamson | if (!mem->memory_size) {
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332 | 70fedd76 | Alex Williamson | continue;
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333 | 70fedd76 | Alex Williamson | } |
334 | 4495d6a7 | Jan Kiszka | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
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335 | 4495d6a7 | Jan Kiszka | continue;
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336 | 4495d6a7 | Jan Kiszka | } |
337 | 4495d6a7 | Jan Kiszka | err = kvm_set_user_memory_region(s, mem); |
338 | 4495d6a7 | Jan Kiszka | if (err) {
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339 | 4495d6a7 | Jan Kiszka | return err;
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340 | 4495d6a7 | Jan Kiszka | } |
341 | 4495d6a7 | Jan Kiszka | } |
342 | 4495d6a7 | Jan Kiszka | return 0; |
343 | 4495d6a7 | Jan Kiszka | } |
344 | 4495d6a7 | Jan Kiszka | |
345 | 8369e01c | Marcelo Tosatti | /* get kvm's dirty pages bitmap and update qemu's */
|
346 | ffcde12f | Avi Kivity | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
347 | ffcde12f | Avi Kivity | unsigned long *bitmap) |
348 | 96c1606b | Alexander Graf | { |
349 | 8369e01c | Marcelo Tosatti | unsigned int i, j; |
350 | aa90fec7 | Benjamin Herrenschmidt | unsigned long page_number, c; |
351 | aa90fec7 | Benjamin Herrenschmidt | target_phys_addr_t addr, addr1; |
352 | ffcde12f | Avi Kivity | unsigned int len = ((section->size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
353 | 8369e01c | Marcelo Tosatti | |
354 | 8369e01c | Marcelo Tosatti | /*
|
355 | 8369e01c | Marcelo Tosatti | * bitmap-traveling is faster than memory-traveling (for addr...)
|
356 | 8369e01c | Marcelo Tosatti | * especially when most of the memory is not dirty.
|
357 | 8369e01c | Marcelo Tosatti | */
|
358 | 8369e01c | Marcelo Tosatti | for (i = 0; i < len; i++) { |
359 | 8369e01c | Marcelo Tosatti | if (bitmap[i] != 0) { |
360 | 8369e01c | Marcelo Tosatti | c = leul_to_cpu(bitmap[i]); |
361 | 8369e01c | Marcelo Tosatti | do {
|
362 | 8369e01c | Marcelo Tosatti | j = ffsl(c) - 1;
|
363 | 8369e01c | Marcelo Tosatti | c &= ~(1ul << j);
|
364 | 8369e01c | Marcelo Tosatti | page_number = i * HOST_LONG_BITS + j; |
365 | 8369e01c | Marcelo Tosatti | addr1 = page_number * TARGET_PAGE_SIZE; |
366 | ffcde12f | Avi Kivity | addr = section->offset_within_region + addr1; |
367 | fd4aa979 | Blue Swirl | memory_region_set_dirty(section->mr, addr, TARGET_PAGE_SIZE); |
368 | 8369e01c | Marcelo Tosatti | } while (c != 0); |
369 | 8369e01c | Marcelo Tosatti | } |
370 | 8369e01c | Marcelo Tosatti | } |
371 | 8369e01c | Marcelo Tosatti | return 0; |
372 | 96c1606b | Alexander Graf | } |
373 | 96c1606b | Alexander Graf | |
374 | 8369e01c | Marcelo Tosatti | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
375 | 8369e01c | Marcelo Tosatti | |
376 | 5832d1f2 | aliguori | /**
|
377 | 5832d1f2 | aliguori | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
|
378 | fd4aa979 | Blue Swirl | * This function updates qemu's dirty bitmap using
|
379 | fd4aa979 | Blue Swirl | * memory_region_set_dirty(). This means all bits are set
|
380 | fd4aa979 | Blue Swirl | * to dirty.
|
381 | 5832d1f2 | aliguori | *
|
382 | d3f8d37f | aliguori | * @start_add: start of logged region.
|
383 | 5832d1f2 | aliguori | * @end_addr: end of logged region.
|
384 | 5832d1f2 | aliguori | */
|
385 | ffcde12f | Avi Kivity | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
386 | 5832d1f2 | aliguori | { |
387 | 5832d1f2 | aliguori | KVMState *s = kvm_state; |
388 | 151f7749 | Jan Kiszka | unsigned long size, allocated_size = 0; |
389 | 151f7749 | Jan Kiszka | KVMDirtyLog d; |
390 | 151f7749 | Jan Kiszka | KVMSlot *mem; |
391 | 151f7749 | Jan Kiszka | int ret = 0; |
392 | ffcde12f | Avi Kivity | target_phys_addr_t start_addr = section->offset_within_address_space; |
393 | ffcde12f | Avi Kivity | target_phys_addr_t end_addr = start_addr + section->size; |
394 | 5832d1f2 | aliguori | |
395 | 151f7749 | Jan Kiszka | d.dirty_bitmap = NULL;
|
396 | 151f7749 | Jan Kiszka | while (start_addr < end_addr) {
|
397 | 151f7749 | Jan Kiszka | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
398 | 151f7749 | Jan Kiszka | if (mem == NULL) { |
399 | 151f7749 | Jan Kiszka | break;
|
400 | 151f7749 | Jan Kiszka | } |
401 | 5832d1f2 | aliguori | |
402 | 51b0c606 | Michael Tokarev | /* XXX bad kernel interface alert
|
403 | 51b0c606 | Michael Tokarev | * For dirty bitmap, kernel allocates array of size aligned to
|
404 | 51b0c606 | Michael Tokarev | * bits-per-long. But for case when the kernel is 64bits and
|
405 | 51b0c606 | Michael Tokarev | * the userspace is 32bits, userspace can't align to the same
|
406 | 51b0c606 | Michael Tokarev | * bits-per-long, since sizeof(long) is different between kernel
|
407 | 51b0c606 | Michael Tokarev | * and user space. This way, userspace will provide buffer which
|
408 | 51b0c606 | Michael Tokarev | * may be 4 bytes less than the kernel will use, resulting in
|
409 | 51b0c606 | Michael Tokarev | * userspace memory corruption (which is not detectable by valgrind
|
410 | 51b0c606 | Michael Tokarev | * too, in most cases).
|
411 | 51b0c606 | Michael Tokarev | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
|
412 | 51b0c606 | Michael Tokarev | * a hope that sizeof(long) wont become >8 any time soon.
|
413 | 51b0c606 | Michael Tokarev | */
|
414 | 51b0c606 | Michael Tokarev | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
415 | 51b0c606 | Michael Tokarev | /*HOST_LONG_BITS*/ 64) / 8; |
416 | 151f7749 | Jan Kiszka | if (!d.dirty_bitmap) {
|
417 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_malloc(size); |
418 | 151f7749 | Jan Kiszka | } else if (size > allocated_size) { |
419 | 7267c094 | Anthony Liguori | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
420 | 151f7749 | Jan Kiszka | } |
421 | 151f7749 | Jan Kiszka | allocated_size = size; |
422 | 151f7749 | Jan Kiszka | memset(d.dirty_bitmap, 0, allocated_size);
|
423 | 5832d1f2 | aliguori | |
424 | 151f7749 | Jan Kiszka | d.slot = mem->slot; |
425 | 5832d1f2 | aliguori | |
426 | 6e489f3f | Anthony Liguori | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
427 | 8c0d577e | Blue Swirl | DPRINTF("ioctl failed %d\n", errno);
|
428 | 151f7749 | Jan Kiszka | ret = -1;
|
429 | 151f7749 | Jan Kiszka | break;
|
430 | 151f7749 | Jan Kiszka | } |
431 | 5832d1f2 | aliguori | |
432 | ffcde12f | Avi Kivity | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
433 | 8369e01c | Marcelo Tosatti | start_addr = mem->start_addr + mem->memory_size; |
434 | 5832d1f2 | aliguori | } |
435 | 7267c094 | Anthony Liguori | g_free(d.dirty_bitmap); |
436 | 151f7749 | Jan Kiszka | |
437 | 151f7749 | Jan Kiszka | return ret;
|
438 | 5832d1f2 | aliguori | } |
439 | 5832d1f2 | aliguori | |
440 | c227f099 | Anthony Liguori | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
441 | f65ed4c1 | aliguori | { |
442 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
443 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
444 | f65ed4c1 | aliguori | |
445 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
446 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
447 | f65ed4c1 | aliguori | |
448 | f65ed4c1 | aliguori | zone.addr = start; |
449 | f65ed4c1 | aliguori | zone.size = size; |
450 | f65ed4c1 | aliguori | |
451 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
452 | f65ed4c1 | aliguori | } |
453 | f65ed4c1 | aliguori | |
454 | f65ed4c1 | aliguori | return ret;
|
455 | f65ed4c1 | aliguori | } |
456 | f65ed4c1 | aliguori | |
457 | c227f099 | Anthony Liguori | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
|
458 | f65ed4c1 | aliguori | { |
459 | f65ed4c1 | aliguori | int ret = -ENOSYS;
|
460 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
461 | f65ed4c1 | aliguori | |
462 | f65ed4c1 | aliguori | if (s->coalesced_mmio) {
|
463 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio_zone zone;
|
464 | f65ed4c1 | aliguori | |
465 | f65ed4c1 | aliguori | zone.addr = start; |
466 | f65ed4c1 | aliguori | zone.size = size; |
467 | f65ed4c1 | aliguori | |
468 | f65ed4c1 | aliguori | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
469 | f65ed4c1 | aliguori | } |
470 | f65ed4c1 | aliguori | |
471 | f65ed4c1 | aliguori | return ret;
|
472 | f65ed4c1 | aliguori | } |
473 | f65ed4c1 | aliguori | |
474 | ad7b8b33 | Anthony Liguori | int kvm_check_extension(KVMState *s, unsigned int extension) |
475 | ad7b8b33 | Anthony Liguori | { |
476 | ad7b8b33 | Anthony Liguori | int ret;
|
477 | ad7b8b33 | Anthony Liguori | |
478 | ad7b8b33 | Anthony Liguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
479 | ad7b8b33 | Anthony Liguori | if (ret < 0) { |
480 | ad7b8b33 | Anthony Liguori | ret = 0;
|
481 | ad7b8b33 | Anthony Liguori | } |
482 | ad7b8b33 | Anthony Liguori | |
483 | ad7b8b33 | Anthony Liguori | return ret;
|
484 | ad7b8b33 | Anthony Liguori | } |
485 | ad7b8b33 | Anthony Liguori | |
486 | d2f2b8a7 | Stefan Hajnoczi | static int kvm_check_many_ioeventfds(void) |
487 | d2f2b8a7 | Stefan Hajnoczi | { |
488 | d0dcac83 | Stefan Hajnoczi | /* Userspace can use ioeventfd for io notification. This requires a host
|
489 | d0dcac83 | Stefan Hajnoczi | * that supports eventfd(2) and an I/O thread; since eventfd does not
|
490 | d0dcac83 | Stefan Hajnoczi | * support SIGIO it cannot interrupt the vcpu.
|
491 | d0dcac83 | Stefan Hajnoczi | *
|
492 | d0dcac83 | Stefan Hajnoczi | * Older kernels have a 6 device limit on the KVM io bus. Find out so we
|
493 | d2f2b8a7 | Stefan Hajnoczi | * can avoid creating too many ioeventfds.
|
494 | d2f2b8a7 | Stefan Hajnoczi | */
|
495 | 12d4536f | Anthony Liguori | #if defined(CONFIG_EVENTFD)
|
496 | d2f2b8a7 | Stefan Hajnoczi | int ioeventfds[7]; |
497 | d2f2b8a7 | Stefan Hajnoczi | int i, ret = 0; |
498 | d2f2b8a7 | Stefan Hajnoczi | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
499 | d2f2b8a7 | Stefan Hajnoczi | ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
|
500 | d2f2b8a7 | Stefan Hajnoczi | if (ioeventfds[i] < 0) { |
501 | d2f2b8a7 | Stefan Hajnoczi | break;
|
502 | d2f2b8a7 | Stefan Hajnoczi | } |
503 | d2f2b8a7 | Stefan Hajnoczi | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
504 | d2f2b8a7 | Stefan Hajnoczi | if (ret < 0) { |
505 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
506 | d2f2b8a7 | Stefan Hajnoczi | break;
|
507 | d2f2b8a7 | Stefan Hajnoczi | } |
508 | d2f2b8a7 | Stefan Hajnoczi | } |
509 | d2f2b8a7 | Stefan Hajnoczi | |
510 | d2f2b8a7 | Stefan Hajnoczi | /* Decide whether many devices are supported or not */
|
511 | d2f2b8a7 | Stefan Hajnoczi | ret = i == ARRAY_SIZE(ioeventfds); |
512 | d2f2b8a7 | Stefan Hajnoczi | |
513 | d2f2b8a7 | Stefan Hajnoczi | while (i-- > 0) { |
514 | d2f2b8a7 | Stefan Hajnoczi | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
515 | d2f2b8a7 | Stefan Hajnoczi | close(ioeventfds[i]); |
516 | d2f2b8a7 | Stefan Hajnoczi | } |
517 | d2f2b8a7 | Stefan Hajnoczi | return ret;
|
518 | d2f2b8a7 | Stefan Hajnoczi | #else
|
519 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
520 | d2f2b8a7 | Stefan Hajnoczi | #endif
|
521 | d2f2b8a7 | Stefan Hajnoczi | } |
522 | d2f2b8a7 | Stefan Hajnoczi | |
523 | 94a8d39a | Jan Kiszka | static const KVMCapabilityInfo * |
524 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
|
525 | 94a8d39a | Jan Kiszka | { |
526 | 94a8d39a | Jan Kiszka | while (list->name) {
|
527 | 94a8d39a | Jan Kiszka | if (!kvm_check_extension(s, list->value)) {
|
528 | 94a8d39a | Jan Kiszka | return list;
|
529 | 94a8d39a | Jan Kiszka | } |
530 | 94a8d39a | Jan Kiszka | list++; |
531 | 94a8d39a | Jan Kiszka | } |
532 | 94a8d39a | Jan Kiszka | return NULL; |
533 | 94a8d39a | Jan Kiszka | } |
534 | 94a8d39a | Jan Kiszka | |
535 | a01672d3 | Avi Kivity | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
536 | 46dbef6a | Michael S. Tsirkin | { |
537 | 46dbef6a | Michael S. Tsirkin | KVMState *s = kvm_state; |
538 | 46dbef6a | Michael S. Tsirkin | KVMSlot *mem, old; |
539 | 46dbef6a | Michael S. Tsirkin | int err;
|
540 | a01672d3 | Avi Kivity | MemoryRegion *mr = section->mr; |
541 | a01672d3 | Avi Kivity | bool log_dirty = memory_region_is_logging(mr);
|
542 | a01672d3 | Avi Kivity | target_phys_addr_t start_addr = section->offset_within_address_space; |
543 | a01672d3 | Avi Kivity | ram_addr_t size = section->size; |
544 | 9f213ed9 | Avi Kivity | void *ram = NULL; |
545 | 8f6f962b | Avi Kivity | unsigned delta;
|
546 | 46dbef6a | Michael S. Tsirkin | |
547 | 14542fea | Gleb Natapov | /* kvm works in page size chunks, but the function may be called
|
548 | 14542fea | Gleb Natapov | with sub-page size and unaligned start address. */
|
549 | 8f6f962b | Avi Kivity | delta = TARGET_PAGE_ALIGN(size) - size; |
550 | 8f6f962b | Avi Kivity | if (delta > size) {
|
551 | 8f6f962b | Avi Kivity | return;
|
552 | 8f6f962b | Avi Kivity | } |
553 | 8f6f962b | Avi Kivity | start_addr += delta; |
554 | 8f6f962b | Avi Kivity | size -= delta; |
555 | 8f6f962b | Avi Kivity | size &= TARGET_PAGE_MASK; |
556 | 8f6f962b | Avi Kivity | if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
|
557 | 8f6f962b | Avi Kivity | return;
|
558 | 8f6f962b | Avi Kivity | } |
559 | 46dbef6a | Michael S. Tsirkin | |
560 | a01672d3 | Avi Kivity | if (!memory_region_is_ram(mr)) {
|
561 | a01672d3 | Avi Kivity | return;
|
562 | 9f213ed9 | Avi Kivity | } |
563 | 9f213ed9 | Avi Kivity | |
564 | 8f6f962b | Avi Kivity | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
565 | a01672d3 | Avi Kivity | |
566 | 46dbef6a | Michael S. Tsirkin | while (1) { |
567 | 46dbef6a | Michael S. Tsirkin | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
568 | 46dbef6a | Michael S. Tsirkin | if (!mem) {
|
569 | 46dbef6a | Michael S. Tsirkin | break;
|
570 | 46dbef6a | Michael S. Tsirkin | } |
571 | 46dbef6a | Michael S. Tsirkin | |
572 | a01672d3 | Avi Kivity | if (add && start_addr >= mem->start_addr &&
|
573 | 46dbef6a | Michael S. Tsirkin | (start_addr + size <= mem->start_addr + mem->memory_size) && |
574 | 9f213ed9 | Avi Kivity | (ram - start_addr == mem->ram - mem->start_addr)) { |
575 | 46dbef6a | Michael S. Tsirkin | /* The new slot fits into the existing one and comes with
|
576 | 25254bbc | Michael S. Tsirkin | * identical parameters - update flags and done. */
|
577 | 25254bbc | Michael S. Tsirkin | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
578 | 46dbef6a | Michael S. Tsirkin | return;
|
579 | 46dbef6a | Michael S. Tsirkin | } |
580 | 46dbef6a | Michael S. Tsirkin | |
581 | 46dbef6a | Michael S. Tsirkin | old = *mem; |
582 | 46dbef6a | Michael S. Tsirkin | |
583 | 3fbffb62 | Avi Kivity | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
|
584 | 3fbffb62 | Avi Kivity | kvm_physical_sync_dirty_bitmap(section); |
585 | 3fbffb62 | Avi Kivity | } |
586 | 3fbffb62 | Avi Kivity | |
587 | 46dbef6a | Michael S. Tsirkin | /* unregister the overlapping slot */
|
588 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = 0;
|
589 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
590 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
591 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
|
592 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
593 | 46dbef6a | Michael S. Tsirkin | abort(); |
594 | 46dbef6a | Michael S. Tsirkin | } |
595 | 46dbef6a | Michael S. Tsirkin | |
596 | 46dbef6a | Michael S. Tsirkin | /* Workaround for older KVM versions: we can't join slots, even not by
|
597 | 46dbef6a | Michael S. Tsirkin | * unregistering the previous ones and then registering the larger
|
598 | 46dbef6a | Michael S. Tsirkin | * slot. We have to maintain the existing fragmentation. Sigh.
|
599 | 46dbef6a | Michael S. Tsirkin | *
|
600 | 46dbef6a | Michael S. Tsirkin | * This workaround assumes that the new slot starts at the same
|
601 | 46dbef6a | Michael S. Tsirkin | * address as the first existing one. If not or if some overlapping
|
602 | 46dbef6a | Michael S. Tsirkin | * slot comes around later, we will fail (not seen in practice so far)
|
603 | 46dbef6a | Michael S. Tsirkin | * - and actually require a recent KVM version. */
|
604 | 46dbef6a | Michael S. Tsirkin | if (s->broken_set_mem_region &&
|
605 | a01672d3 | Avi Kivity | old.start_addr == start_addr && old.memory_size < size && add) { |
606 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
607 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size; |
608 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
609 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
610 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
611 | 46dbef6a | Michael S. Tsirkin | |
612 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
613 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
614 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error updating slot: %s\n", __func__,
|
615 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
616 | 46dbef6a | Michael S. Tsirkin | abort(); |
617 | 46dbef6a | Michael S. Tsirkin | } |
618 | 46dbef6a | Michael S. Tsirkin | |
619 | 46dbef6a | Michael S. Tsirkin | start_addr += old.memory_size; |
620 | 9f213ed9 | Avi Kivity | ram += old.memory_size; |
621 | 46dbef6a | Michael S. Tsirkin | size -= old.memory_size; |
622 | 46dbef6a | Michael S. Tsirkin | continue;
|
623 | 46dbef6a | Michael S. Tsirkin | } |
624 | 46dbef6a | Michael S. Tsirkin | |
625 | 46dbef6a | Michael S. Tsirkin | /* register prefix slot */
|
626 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr < start_addr) {
|
627 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
628 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = start_addr - old.start_addr; |
629 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = old.start_addr; |
630 | 9f213ed9 | Avi Kivity | mem->ram = old.ram; |
631 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
632 | 46dbef6a | Michael S. Tsirkin | |
633 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
634 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
635 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering prefix slot: %s\n",
|
636 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
637 | d4d6868f | Alexander Graf | #ifdef TARGET_PPC
|
638 | d4d6868f | Alexander Graf | fprintf(stderr, "%s: This is probably because your kernel's " \
|
639 | d4d6868f | Alexander Graf | "PAGE_SIZE is too big. Please try to use 4k " \
|
640 | d4d6868f | Alexander Graf | "PAGE_SIZE!\n", __func__);
|
641 | d4d6868f | Alexander Graf | #endif
|
642 | 46dbef6a | Michael S. Tsirkin | abort(); |
643 | 46dbef6a | Michael S. Tsirkin | } |
644 | 46dbef6a | Michael S. Tsirkin | } |
645 | 46dbef6a | Michael S. Tsirkin | |
646 | 46dbef6a | Michael S. Tsirkin | /* register suffix slot */
|
647 | 46dbef6a | Michael S. Tsirkin | if (old.start_addr + old.memory_size > start_addr + size) {
|
648 | 46dbef6a | Michael S. Tsirkin | ram_addr_t size_delta; |
649 | 46dbef6a | Michael S. Tsirkin | |
650 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
651 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr + size; |
652 | 46dbef6a | Michael S. Tsirkin | size_delta = mem->start_addr - old.start_addr; |
653 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = old.memory_size - size_delta; |
654 | 9f213ed9 | Avi Kivity | mem->ram = old.ram + size_delta; |
655 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
656 | 46dbef6a | Michael S. Tsirkin | |
657 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
658 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
659 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering suffix slot: %s\n",
|
660 | 46dbef6a | Michael S. Tsirkin | __func__, strerror(-err)); |
661 | 46dbef6a | Michael S. Tsirkin | abort(); |
662 | 46dbef6a | Michael S. Tsirkin | } |
663 | 46dbef6a | Michael S. Tsirkin | } |
664 | 46dbef6a | Michael S. Tsirkin | } |
665 | 46dbef6a | Michael S. Tsirkin | |
666 | 46dbef6a | Michael S. Tsirkin | /* in case the KVM bug workaround already "consumed" the new slot */
|
667 | a426e122 | Jan Kiszka | if (!size) {
|
668 | 46dbef6a | Michael S. Tsirkin | return;
|
669 | a426e122 | Jan Kiszka | } |
670 | a01672d3 | Avi Kivity | if (!add) {
|
671 | 46dbef6a | Michael S. Tsirkin | return;
|
672 | a426e122 | Jan Kiszka | } |
673 | 46dbef6a | Michael S. Tsirkin | mem = kvm_alloc_slot(s); |
674 | 46dbef6a | Michael S. Tsirkin | mem->memory_size = size; |
675 | 46dbef6a | Michael S. Tsirkin | mem->start_addr = start_addr; |
676 | 9f213ed9 | Avi Kivity | mem->ram = ram; |
677 | 25254bbc | Michael S. Tsirkin | mem->flags = kvm_mem_flags(s, log_dirty); |
678 | 46dbef6a | Michael S. Tsirkin | |
679 | 46dbef6a | Michael S. Tsirkin | err = kvm_set_user_memory_region(s, mem); |
680 | 46dbef6a | Michael S. Tsirkin | if (err) {
|
681 | 46dbef6a | Michael S. Tsirkin | fprintf(stderr, "%s: error registering slot: %s\n", __func__,
|
682 | 46dbef6a | Michael S. Tsirkin | strerror(-err)); |
683 | 46dbef6a | Michael S. Tsirkin | abort(); |
684 | 46dbef6a | Michael S. Tsirkin | } |
685 | 46dbef6a | Michael S. Tsirkin | } |
686 | 46dbef6a | Michael S. Tsirkin | |
687 | 50c1e149 | Avi Kivity | static void kvm_begin(MemoryListener *listener) |
688 | 50c1e149 | Avi Kivity | { |
689 | 50c1e149 | Avi Kivity | } |
690 | 50c1e149 | Avi Kivity | |
691 | 50c1e149 | Avi Kivity | static void kvm_commit(MemoryListener *listener) |
692 | 50c1e149 | Avi Kivity | { |
693 | 50c1e149 | Avi Kivity | } |
694 | 50c1e149 | Avi Kivity | |
695 | a01672d3 | Avi Kivity | static void kvm_region_add(MemoryListener *listener, |
696 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
697 | a01672d3 | Avi Kivity | { |
698 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, true);
|
699 | a01672d3 | Avi Kivity | } |
700 | a01672d3 | Avi Kivity | |
701 | a01672d3 | Avi Kivity | static void kvm_region_del(MemoryListener *listener, |
702 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
703 | a01672d3 | Avi Kivity | { |
704 | a01672d3 | Avi Kivity | kvm_set_phys_mem(section, false);
|
705 | a01672d3 | Avi Kivity | } |
706 | a01672d3 | Avi Kivity | |
707 | 50c1e149 | Avi Kivity | static void kvm_region_nop(MemoryListener *listener, |
708 | 50c1e149 | Avi Kivity | MemoryRegionSection *section) |
709 | 50c1e149 | Avi Kivity | { |
710 | 50c1e149 | Avi Kivity | } |
711 | 50c1e149 | Avi Kivity | |
712 | a01672d3 | Avi Kivity | static void kvm_log_sync(MemoryListener *listener, |
713 | a01672d3 | Avi Kivity | MemoryRegionSection *section) |
714 | 7b8f3b78 | Michael S. Tsirkin | { |
715 | a01672d3 | Avi Kivity | int r;
|
716 | a01672d3 | Avi Kivity | |
717 | ffcde12f | Avi Kivity | r = kvm_physical_sync_dirty_bitmap(section); |
718 | a01672d3 | Avi Kivity | if (r < 0) { |
719 | a01672d3 | Avi Kivity | abort(); |
720 | a01672d3 | Avi Kivity | } |
721 | 7b8f3b78 | Michael S. Tsirkin | } |
722 | 7b8f3b78 | Michael S. Tsirkin | |
723 | a01672d3 | Avi Kivity | static void kvm_log_global_start(struct MemoryListener *listener) |
724 | 7b8f3b78 | Michael S. Tsirkin | { |
725 | a01672d3 | Avi Kivity | int r;
|
726 | a01672d3 | Avi Kivity | |
727 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(1);
|
728 | a01672d3 | Avi Kivity | assert(r >= 0);
|
729 | 7b8f3b78 | Michael S. Tsirkin | } |
730 | 7b8f3b78 | Michael S. Tsirkin | |
731 | a01672d3 | Avi Kivity | static void kvm_log_global_stop(struct MemoryListener *listener) |
732 | 7b8f3b78 | Michael S. Tsirkin | { |
733 | a01672d3 | Avi Kivity | int r;
|
734 | a01672d3 | Avi Kivity | |
735 | a01672d3 | Avi Kivity | r = kvm_set_migration_log(0);
|
736 | a01672d3 | Avi Kivity | assert(r >= 0);
|
737 | 7b8f3b78 | Michael S. Tsirkin | } |
738 | 7b8f3b78 | Michael S. Tsirkin | |
739 | 80a1ea37 | Avi Kivity | static void kvm_mem_ioeventfd_add(MemoryRegionSection *section, |
740 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
741 | 80a1ea37 | Avi Kivity | { |
742 | 80a1ea37 | Avi Kivity | int r;
|
743 | 80a1ea37 | Avi Kivity | |
744 | 80a1ea37 | Avi Kivity | assert(match_data && section->size == 4);
|
745 | 80a1ea37 | Avi Kivity | |
746 | 80a1ea37 | Avi Kivity | r = kvm_set_ioeventfd_mmio_long(fd, section->offset_within_address_space, |
747 | 80a1ea37 | Avi Kivity | data, true);
|
748 | 80a1ea37 | Avi Kivity | if (r < 0) { |
749 | 80a1ea37 | Avi Kivity | abort(); |
750 | 80a1ea37 | Avi Kivity | } |
751 | 80a1ea37 | Avi Kivity | } |
752 | 80a1ea37 | Avi Kivity | |
753 | 80a1ea37 | Avi Kivity | static void kvm_mem_ioeventfd_del(MemoryRegionSection *section, |
754 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
755 | 80a1ea37 | Avi Kivity | { |
756 | 80a1ea37 | Avi Kivity | int r;
|
757 | 80a1ea37 | Avi Kivity | |
758 | 80a1ea37 | Avi Kivity | r = kvm_set_ioeventfd_mmio_long(fd, section->offset_within_address_space, |
759 | 80a1ea37 | Avi Kivity | data, false);
|
760 | 80a1ea37 | Avi Kivity | if (r < 0) { |
761 | 80a1ea37 | Avi Kivity | abort(); |
762 | 80a1ea37 | Avi Kivity | } |
763 | 80a1ea37 | Avi Kivity | } |
764 | 80a1ea37 | Avi Kivity | |
765 | 80a1ea37 | Avi Kivity | static void kvm_io_ioeventfd_add(MemoryRegionSection *section, |
766 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
767 | 80a1ea37 | Avi Kivity | { |
768 | 80a1ea37 | Avi Kivity | int r;
|
769 | 80a1ea37 | Avi Kivity | |
770 | 80a1ea37 | Avi Kivity | assert(match_data && section->size == 2);
|
771 | 80a1ea37 | Avi Kivity | |
772 | 80a1ea37 | Avi Kivity | r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space, |
773 | 80a1ea37 | Avi Kivity | data, true);
|
774 | 80a1ea37 | Avi Kivity | if (r < 0) { |
775 | 80a1ea37 | Avi Kivity | abort(); |
776 | 80a1ea37 | Avi Kivity | } |
777 | 80a1ea37 | Avi Kivity | } |
778 | 80a1ea37 | Avi Kivity | |
779 | 80a1ea37 | Avi Kivity | static void kvm_io_ioeventfd_del(MemoryRegionSection *section, |
780 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
781 | 80a1ea37 | Avi Kivity | |
782 | 80a1ea37 | Avi Kivity | { |
783 | 80a1ea37 | Avi Kivity | int r;
|
784 | 80a1ea37 | Avi Kivity | |
785 | 80a1ea37 | Avi Kivity | r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space, |
786 | 80a1ea37 | Avi Kivity | data, false);
|
787 | 80a1ea37 | Avi Kivity | if (r < 0) { |
788 | 80a1ea37 | Avi Kivity | abort(); |
789 | 80a1ea37 | Avi Kivity | } |
790 | 80a1ea37 | Avi Kivity | } |
791 | 80a1ea37 | Avi Kivity | |
792 | 80a1ea37 | Avi Kivity | static void kvm_eventfd_add(MemoryListener *listener, |
793 | 80a1ea37 | Avi Kivity | MemoryRegionSection *section, |
794 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
795 | 80a1ea37 | Avi Kivity | { |
796 | 80a1ea37 | Avi Kivity | if (section->address_space == get_system_memory()) {
|
797 | 80a1ea37 | Avi Kivity | kvm_mem_ioeventfd_add(section, match_data, data, fd); |
798 | 80a1ea37 | Avi Kivity | } else {
|
799 | 80a1ea37 | Avi Kivity | kvm_io_ioeventfd_add(section, match_data, data, fd); |
800 | 80a1ea37 | Avi Kivity | } |
801 | 80a1ea37 | Avi Kivity | } |
802 | 80a1ea37 | Avi Kivity | |
803 | 80a1ea37 | Avi Kivity | static void kvm_eventfd_del(MemoryListener *listener, |
804 | 80a1ea37 | Avi Kivity | MemoryRegionSection *section, |
805 | 80a1ea37 | Avi Kivity | bool match_data, uint64_t data, int fd) |
806 | 80a1ea37 | Avi Kivity | { |
807 | 80a1ea37 | Avi Kivity | if (section->address_space == get_system_memory()) {
|
808 | 80a1ea37 | Avi Kivity | kvm_mem_ioeventfd_del(section, match_data, data, fd); |
809 | 80a1ea37 | Avi Kivity | } else {
|
810 | 80a1ea37 | Avi Kivity | kvm_io_ioeventfd_del(section, match_data, data, fd); |
811 | 80a1ea37 | Avi Kivity | } |
812 | 80a1ea37 | Avi Kivity | } |
813 | 80a1ea37 | Avi Kivity | |
814 | a01672d3 | Avi Kivity | static MemoryListener kvm_memory_listener = {
|
815 | 50c1e149 | Avi Kivity | .begin = kvm_begin, |
816 | 50c1e149 | Avi Kivity | .commit = kvm_commit, |
817 | a01672d3 | Avi Kivity | .region_add = kvm_region_add, |
818 | a01672d3 | Avi Kivity | .region_del = kvm_region_del, |
819 | 50c1e149 | Avi Kivity | .region_nop = kvm_region_nop, |
820 | e5896b12 | Anthony PERARD | .log_start = kvm_log_start, |
821 | e5896b12 | Anthony PERARD | .log_stop = kvm_log_stop, |
822 | a01672d3 | Avi Kivity | .log_sync = kvm_log_sync, |
823 | a01672d3 | Avi Kivity | .log_global_start = kvm_log_global_start, |
824 | a01672d3 | Avi Kivity | .log_global_stop = kvm_log_global_stop, |
825 | 80a1ea37 | Avi Kivity | .eventfd_add = kvm_eventfd_add, |
826 | 80a1ea37 | Avi Kivity | .eventfd_del = kvm_eventfd_del, |
827 | 72e22d2f | Avi Kivity | .priority = 10,
|
828 | 7b8f3b78 | Michael S. Tsirkin | }; |
829 | 7b8f3b78 | Michael S. Tsirkin | |
830 | aa7f74d1 | Jan Kiszka | static void kvm_handle_interrupt(CPUState *env, int mask) |
831 | aa7f74d1 | Jan Kiszka | { |
832 | aa7f74d1 | Jan Kiszka | env->interrupt_request |= mask; |
833 | aa7f74d1 | Jan Kiszka | |
834 | aa7f74d1 | Jan Kiszka | if (!qemu_cpu_is_self(env)) {
|
835 | aa7f74d1 | Jan Kiszka | qemu_cpu_kick(env); |
836 | aa7f74d1 | Jan Kiszka | } |
837 | aa7f74d1 | Jan Kiszka | } |
838 | aa7f74d1 | Jan Kiszka | |
839 | 84b058d7 | Jan Kiszka | int kvm_irqchip_set_irq(KVMState *s, int irq, int level) |
840 | 84b058d7 | Jan Kiszka | { |
841 | 84b058d7 | Jan Kiszka | struct kvm_irq_level event;
|
842 | 84b058d7 | Jan Kiszka | int ret;
|
843 | 84b058d7 | Jan Kiszka | |
844 | 3d4b2649 | Jan Kiszka | assert(kvm_irqchip_in_kernel()); |
845 | 84b058d7 | Jan Kiszka | |
846 | 84b058d7 | Jan Kiszka | event.level = level; |
847 | 84b058d7 | Jan Kiszka | event.irq = irq; |
848 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, s->irqchip_inject_ioctl, &event); |
849 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
850 | 84b058d7 | Jan Kiszka | perror("kvm_set_irqchip_line");
|
851 | 84b058d7 | Jan Kiszka | abort(); |
852 | 84b058d7 | Jan Kiszka | } |
853 | 84b058d7 | Jan Kiszka | |
854 | 84b058d7 | Jan Kiszka | return (s->irqchip_inject_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
855 | 84b058d7 | Jan Kiszka | } |
856 | 84b058d7 | Jan Kiszka | |
857 | 84b058d7 | Jan Kiszka | #ifdef KVM_CAP_IRQ_ROUTING
|
858 | 84b058d7 | Jan Kiszka | static void set_gsi(KVMState *s, unsigned int gsi) |
859 | 84b058d7 | Jan Kiszka | { |
860 | 84b058d7 | Jan Kiszka | assert(gsi < s->max_gsi); |
861 | 84b058d7 | Jan Kiszka | |
862 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
863 | 84b058d7 | Jan Kiszka | } |
864 | 84b058d7 | Jan Kiszka | |
865 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
866 | 84b058d7 | Jan Kiszka | { |
867 | 84b058d7 | Jan Kiszka | int gsi_count;
|
868 | 84b058d7 | Jan Kiszka | |
869 | 84b058d7 | Jan Kiszka | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
870 | 84b058d7 | Jan Kiszka | if (gsi_count > 0) { |
871 | 84b058d7 | Jan Kiszka | unsigned int gsi_bits, i; |
872 | 84b058d7 | Jan Kiszka | |
873 | 84b058d7 | Jan Kiszka | /* Round up so we can search ints using ffs */
|
874 | 84b058d7 | Jan Kiszka | gsi_bits = (gsi_count + 31) / 32; |
875 | 84b058d7 | Jan Kiszka | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
|
876 | 84b058d7 | Jan Kiszka | s->max_gsi = gsi_bits; |
877 | 84b058d7 | Jan Kiszka | |
878 | 84b058d7 | Jan Kiszka | /* Mark any over-allocated bits as already in use */
|
879 | 84b058d7 | Jan Kiszka | for (i = gsi_count; i < gsi_bits; i++) {
|
880 | 84b058d7 | Jan Kiszka | set_gsi(s, i); |
881 | 84b058d7 | Jan Kiszka | } |
882 | 84b058d7 | Jan Kiszka | } |
883 | 84b058d7 | Jan Kiszka | |
884 | 84b058d7 | Jan Kiszka | s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
|
885 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = 0;
|
886 | 84b058d7 | Jan Kiszka | |
887 | 84b058d7 | Jan Kiszka | kvm_arch_init_irq_routing(s); |
888 | 84b058d7 | Jan Kiszka | } |
889 | 84b058d7 | Jan Kiszka | |
890 | 84b058d7 | Jan Kiszka | static void kvm_add_routing_entry(KVMState *s, |
891 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *entry)
|
892 | 84b058d7 | Jan Kiszka | { |
893 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry *new;
|
894 | 84b058d7 | Jan Kiszka | int n, size;
|
895 | 84b058d7 | Jan Kiszka | |
896 | 84b058d7 | Jan Kiszka | if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
|
897 | 84b058d7 | Jan Kiszka | n = s->nr_allocated_irq_routes * 2;
|
898 | 84b058d7 | Jan Kiszka | if (n < 64) { |
899 | 84b058d7 | Jan Kiszka | n = 64;
|
900 | 84b058d7 | Jan Kiszka | } |
901 | 84b058d7 | Jan Kiszka | size = sizeof(struct kvm_irq_routing); |
902 | 84b058d7 | Jan Kiszka | size += n * sizeof(*new);
|
903 | 84b058d7 | Jan Kiszka | s->irq_routes = g_realloc(s->irq_routes, size); |
904 | 84b058d7 | Jan Kiszka | s->nr_allocated_irq_routes = n; |
905 | 84b058d7 | Jan Kiszka | } |
906 | 84b058d7 | Jan Kiszka | n = s->irq_routes->nr++; |
907 | 84b058d7 | Jan Kiszka | new = &s->irq_routes->entries[n]; |
908 | 84b058d7 | Jan Kiszka | memset(new, 0, sizeof(*new)); |
909 | 84b058d7 | Jan Kiszka | new->gsi = entry->gsi; |
910 | 84b058d7 | Jan Kiszka | new->type = entry->type; |
911 | 84b058d7 | Jan Kiszka | new->flags = entry->flags; |
912 | 84b058d7 | Jan Kiszka | new->u = entry->u; |
913 | 84b058d7 | Jan Kiszka | |
914 | 84b058d7 | Jan Kiszka | set_gsi(s, entry->gsi); |
915 | 84b058d7 | Jan Kiszka | } |
916 | 84b058d7 | Jan Kiszka | |
917 | 84b058d7 | Jan Kiszka | void kvm_irqchip_add_route(KVMState *s, int irq, int irqchip, int pin) |
918 | 84b058d7 | Jan Kiszka | { |
919 | 84b058d7 | Jan Kiszka | struct kvm_irq_routing_entry e;
|
920 | 84b058d7 | Jan Kiszka | |
921 | 84b058d7 | Jan Kiszka | e.gsi = irq; |
922 | 84b058d7 | Jan Kiszka | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
923 | 84b058d7 | Jan Kiszka | e.flags = 0;
|
924 | 84b058d7 | Jan Kiszka | e.u.irqchip.irqchip = irqchip; |
925 | 84b058d7 | Jan Kiszka | e.u.irqchip.pin = pin; |
926 | 84b058d7 | Jan Kiszka | kvm_add_routing_entry(s, &e); |
927 | 84b058d7 | Jan Kiszka | } |
928 | 84b058d7 | Jan Kiszka | |
929 | 84b058d7 | Jan Kiszka | int kvm_irqchip_commit_routes(KVMState *s)
|
930 | 84b058d7 | Jan Kiszka | { |
931 | 84b058d7 | Jan Kiszka | s->irq_routes->flags = 0;
|
932 | 84b058d7 | Jan Kiszka | return kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes);
|
933 | 84b058d7 | Jan Kiszka | } |
934 | 84b058d7 | Jan Kiszka | |
935 | 84b058d7 | Jan Kiszka | #else /* !KVM_CAP_IRQ_ROUTING */ |
936 | 84b058d7 | Jan Kiszka | |
937 | 84b058d7 | Jan Kiszka | static void kvm_init_irq_routing(KVMState *s) |
938 | 84b058d7 | Jan Kiszka | { |
939 | 84b058d7 | Jan Kiszka | } |
940 | 84b058d7 | Jan Kiszka | #endif /* !KVM_CAP_IRQ_ROUTING */ |
941 | 84b058d7 | Jan Kiszka | |
942 | 84b058d7 | Jan Kiszka | static int kvm_irqchip_create(KVMState *s) |
943 | 84b058d7 | Jan Kiszka | { |
944 | 84b058d7 | Jan Kiszka | QemuOptsList *list = qemu_find_opts("machine");
|
945 | 84b058d7 | Jan Kiszka | int ret;
|
946 | 84b058d7 | Jan Kiszka | |
947 | 84b058d7 | Jan Kiszka | if (QTAILQ_EMPTY(&list->head) ||
|
948 | 84b058d7 | Jan Kiszka | !qemu_opt_get_bool(QTAILQ_FIRST(&list->head), |
949 | 84b058d7 | Jan Kiszka | "kernel_irqchip", false) || |
950 | 84b058d7 | Jan Kiszka | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
951 | 84b058d7 | Jan Kiszka | return 0; |
952 | 84b058d7 | Jan Kiszka | } |
953 | 84b058d7 | Jan Kiszka | |
954 | 84b058d7 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
955 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
956 | 84b058d7 | Jan Kiszka | fprintf(stderr, "Create kernel irqchip failed\n");
|
957 | 84b058d7 | Jan Kiszka | return ret;
|
958 | 84b058d7 | Jan Kiszka | } |
959 | 84b058d7 | Jan Kiszka | |
960 | 84b058d7 | Jan Kiszka | s->irqchip_inject_ioctl = KVM_IRQ_LINE; |
961 | 84b058d7 | Jan Kiszka | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
|
962 | 84b058d7 | Jan Kiszka | s->irqchip_inject_ioctl = KVM_IRQ_LINE_STATUS; |
963 | 84b058d7 | Jan Kiszka | } |
964 | 3d4b2649 | Jan Kiszka | kvm_kernel_irqchip = true;
|
965 | 84b058d7 | Jan Kiszka | |
966 | 84b058d7 | Jan Kiszka | kvm_init_irq_routing(s); |
967 | 84b058d7 | Jan Kiszka | |
968 | 84b058d7 | Jan Kiszka | return 0; |
969 | 84b058d7 | Jan Kiszka | } |
970 | 84b058d7 | Jan Kiszka | |
971 | cad1e282 | Jan Kiszka | int kvm_init(void) |
972 | 05330448 | aliguori | { |
973 | 168ccc11 | Jan Kiszka | static const char upgrade_note[] = |
974 | 168ccc11 | Jan Kiszka | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
|
975 | 168ccc11 | Jan Kiszka | "(see http://sourceforge.net/projects/kvm).\n";
|
976 | 05330448 | aliguori | KVMState *s; |
977 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo *missing_cap;
|
978 | 05330448 | aliguori | int ret;
|
979 | 05330448 | aliguori | int i;
|
980 | 05330448 | aliguori | |
981 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(KVMState));
|
982 | 05330448 | aliguori | |
983 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
984 | 72cf2d4f | Blue Swirl | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
985 | e22a25c9 | aliguori | #endif
|
986 | a426e122 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
987 | 05330448 | aliguori | s->slots[i].slot = i; |
988 | a426e122 | Jan Kiszka | } |
989 | 05330448 | aliguori | s->vmfd = -1;
|
990 | 40ff6d7e | Kevin Wolf | s->fd = qemu_open("/dev/kvm", O_RDWR);
|
991 | 05330448 | aliguori | if (s->fd == -1) { |
992 | 05330448 | aliguori | fprintf(stderr, "Could not access KVM kernel module: %m\n");
|
993 | 05330448 | aliguori | ret = -errno; |
994 | 05330448 | aliguori | goto err;
|
995 | 05330448 | aliguori | } |
996 | 05330448 | aliguori | |
997 | 05330448 | aliguori | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
|
998 | 05330448 | aliguori | if (ret < KVM_API_VERSION) {
|
999 | a426e122 | Jan Kiszka | if (ret > 0) { |
1000 | 05330448 | aliguori | ret = -EINVAL; |
1001 | a426e122 | Jan Kiszka | } |
1002 | 05330448 | aliguori | fprintf(stderr, "kvm version too old\n");
|
1003 | 05330448 | aliguori | goto err;
|
1004 | 05330448 | aliguori | } |
1005 | 05330448 | aliguori | |
1006 | 05330448 | aliguori | if (ret > KVM_API_VERSION) {
|
1007 | 05330448 | aliguori | ret = -EINVAL; |
1008 | 05330448 | aliguori | fprintf(stderr, "kvm version not supported\n");
|
1009 | 05330448 | aliguori | goto err;
|
1010 | 05330448 | aliguori | } |
1011 | 05330448 | aliguori | |
1012 | 05330448 | aliguori | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
|
1013 | 0104dcac | Alexander Graf | if (s->vmfd < 0) { |
1014 | 0104dcac | Alexander Graf | #ifdef TARGET_S390X
|
1015 | 0104dcac | Alexander Graf | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
|
1016 | 0104dcac | Alexander Graf | "your host kernel command line\n");
|
1017 | 0104dcac | Alexander Graf | #endif
|
1018 | db9eae1c | Xu He Jie | ret = s->vmfd; |
1019 | 05330448 | aliguori | goto err;
|
1020 | 0104dcac | Alexander Graf | } |
1021 | 05330448 | aliguori | |
1022 | 94a8d39a | Jan Kiszka | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1023 | 94a8d39a | Jan Kiszka | if (!missing_cap) {
|
1024 | 94a8d39a | Jan Kiszka | missing_cap = |
1025 | 94a8d39a | Jan Kiszka | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
1026 | 05330448 | aliguori | } |
1027 | 94a8d39a | Jan Kiszka | if (missing_cap) {
|
1028 | ad7b8b33 | Anthony Liguori | ret = -EINVAL; |
1029 | 94a8d39a | Jan Kiszka | fprintf(stderr, "kvm does not support %s\n%s",
|
1030 | 94a8d39a | Jan Kiszka | missing_cap->name, upgrade_note); |
1031 | d85dc283 | aliguori | goto err;
|
1032 | d85dc283 | aliguori | } |
1033 | d85dc283 | aliguori | |
1034 | ad7b8b33 | Anthony Liguori | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
1035 | f65ed4c1 | aliguori | |
1036 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 1;
|
1037 | 14a09518 | Lai Jiangshan | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
1038 | e69917e2 | Jan Kiszka | if (ret > 0) { |
1039 | e69917e2 | Jan Kiszka | s->broken_set_mem_region = 0;
|
1040 | e69917e2 | Jan Kiszka | } |
1041 | e69917e2 | Jan Kiszka | |
1042 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1043 | a0fb002c | Jan Kiszka | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
1044 | a0fb002c | Jan Kiszka | #endif
|
1045 | a0fb002c | Jan Kiszka | |
1046 | b0b1d690 | Jan Kiszka | s->robust_singlestep = |
1047 | b0b1d690 | Jan Kiszka | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
1048 | b0b1d690 | Jan Kiszka | |
1049 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1050 | ff44f1a3 | Jan Kiszka | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
1051 | ff44f1a3 | Jan Kiszka | #endif
|
1052 | ff44f1a3 | Jan Kiszka | |
1053 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
1054 | f1665b21 | Sheng Yang | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
1055 | f1665b21 | Sheng Yang | #endif
|
1056 | f1665b21 | Sheng Yang | |
1057 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
1058 | f1665b21 | Sheng Yang | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
1059 | f1665b21 | Sheng Yang | #endif
|
1060 | f1665b21 | Sheng Yang | |
1061 | cad1e282 | Jan Kiszka | ret = kvm_arch_init(s); |
1062 | a426e122 | Jan Kiszka | if (ret < 0) { |
1063 | 05330448 | aliguori | goto err;
|
1064 | a426e122 | Jan Kiszka | } |
1065 | 05330448 | aliguori | |
1066 | 84b058d7 | Jan Kiszka | ret = kvm_irqchip_create(s); |
1067 | 84b058d7 | Jan Kiszka | if (ret < 0) { |
1068 | 84b058d7 | Jan Kiszka | goto err;
|
1069 | 84b058d7 | Jan Kiszka | } |
1070 | 84b058d7 | Jan Kiszka | |
1071 | 05330448 | aliguori | kvm_state = s; |
1072 | 7376e582 | Avi Kivity | memory_listener_register(&kvm_memory_listener, NULL);
|
1073 | 05330448 | aliguori | |
1074 | d2f2b8a7 | Stefan Hajnoczi | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1075 | d2f2b8a7 | Stefan Hajnoczi | |
1076 | aa7f74d1 | Jan Kiszka | cpu_interrupt_handler = kvm_handle_interrupt; |
1077 | aa7f74d1 | Jan Kiszka | |
1078 | 05330448 | aliguori | return 0; |
1079 | 05330448 | aliguori | |
1080 | 05330448 | aliguori | err:
|
1081 | 05330448 | aliguori | if (s) {
|
1082 | db9eae1c | Xu He Jie | if (s->vmfd >= 0) { |
1083 | 05330448 | aliguori | close(s->vmfd); |
1084 | a426e122 | Jan Kiszka | } |
1085 | a426e122 | Jan Kiszka | if (s->fd != -1) { |
1086 | 05330448 | aliguori | close(s->fd); |
1087 | a426e122 | Jan Kiszka | } |
1088 | 05330448 | aliguori | } |
1089 | 7267c094 | Anthony Liguori | g_free(s); |
1090 | 05330448 | aliguori | |
1091 | 05330448 | aliguori | return ret;
|
1092 | 05330448 | aliguori | } |
1093 | 05330448 | aliguori | |
1094 | b30e93e9 | Jan Kiszka | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1095 | b30e93e9 | Jan Kiszka | uint32_t count) |
1096 | 05330448 | aliguori | { |
1097 | 05330448 | aliguori | int i;
|
1098 | 05330448 | aliguori | uint8_t *ptr = data; |
1099 | 05330448 | aliguori | |
1100 | 05330448 | aliguori | for (i = 0; i < count; i++) { |
1101 | 05330448 | aliguori | if (direction == KVM_EXIT_IO_IN) {
|
1102 | 05330448 | aliguori | switch (size) {
|
1103 | 05330448 | aliguori | case 1: |
1104 | afcea8cb | Blue Swirl | stb_p(ptr, cpu_inb(port)); |
1105 | 05330448 | aliguori | break;
|
1106 | 05330448 | aliguori | case 2: |
1107 | afcea8cb | Blue Swirl | stw_p(ptr, cpu_inw(port)); |
1108 | 05330448 | aliguori | break;
|
1109 | 05330448 | aliguori | case 4: |
1110 | afcea8cb | Blue Swirl | stl_p(ptr, cpu_inl(port)); |
1111 | 05330448 | aliguori | break;
|
1112 | 05330448 | aliguori | } |
1113 | 05330448 | aliguori | } else {
|
1114 | 05330448 | aliguori | switch (size) {
|
1115 | 05330448 | aliguori | case 1: |
1116 | afcea8cb | Blue Swirl | cpu_outb(port, ldub_p(ptr)); |
1117 | 05330448 | aliguori | break;
|
1118 | 05330448 | aliguori | case 2: |
1119 | afcea8cb | Blue Swirl | cpu_outw(port, lduw_p(ptr)); |
1120 | 05330448 | aliguori | break;
|
1121 | 05330448 | aliguori | case 4: |
1122 | afcea8cb | Blue Swirl | cpu_outl(port, ldl_p(ptr)); |
1123 | 05330448 | aliguori | break;
|
1124 | 05330448 | aliguori | } |
1125 | 05330448 | aliguori | } |
1126 | 05330448 | aliguori | |
1127 | 05330448 | aliguori | ptr += size; |
1128 | 05330448 | aliguori | } |
1129 | 05330448 | aliguori | } |
1130 | 05330448 | aliguori | |
1131 | 73aaec4a | Jan Kiszka | static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run) |
1132 | 7c80eef8 | Marcelo Tosatti | { |
1133 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM internal error.");
|
1134 | 7c80eef8 | Marcelo Tosatti | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
|
1135 | 7c80eef8 | Marcelo Tosatti | int i;
|
1136 | 7c80eef8 | Marcelo Tosatti | |
1137 | bb44e0d1 | Jan Kiszka | fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
|
1138 | 7c80eef8 | Marcelo Tosatti | for (i = 0; i < run->internal.ndata; ++i) { |
1139 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
1140 | 7c80eef8 | Marcelo Tosatti | i, (uint64_t)run->internal.data[i]); |
1141 | 7c80eef8 | Marcelo Tosatti | } |
1142 | bb44e0d1 | Jan Kiszka | } else {
|
1143 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "\n");
|
1144 | 7c80eef8 | Marcelo Tosatti | } |
1145 | 7c80eef8 | Marcelo Tosatti | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
|
1146 | 7c80eef8 | Marcelo Tosatti | fprintf(stderr, "emulation failure\n");
|
1147 | a426e122 | Jan Kiszka | if (!kvm_arch_stop_on_emulation_error(env)) {
|
1148 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1149 | d73cd8f4 | Jan Kiszka | return EXCP_INTERRUPT;
|
1150 | a426e122 | Jan Kiszka | } |
1151 | 7c80eef8 | Marcelo Tosatti | } |
1152 | 7c80eef8 | Marcelo Tosatti | /* FIXME: Should trigger a qmp message to let management know
|
1153 | 7c80eef8 | Marcelo Tosatti | * something went wrong.
|
1154 | 7c80eef8 | Marcelo Tosatti | */
|
1155 | 73aaec4a | Jan Kiszka | return -1; |
1156 | 7c80eef8 | Marcelo Tosatti | } |
1157 | 7c80eef8 | Marcelo Tosatti | |
1158 | 62a2744c | Sheng Yang | void kvm_flush_coalesced_mmio_buffer(void) |
1159 | f65ed4c1 | aliguori | { |
1160 | f65ed4c1 | aliguori | KVMState *s = kvm_state; |
1161 | 1cae88b9 | Avi Kivity | |
1162 | 1cae88b9 | Avi Kivity | if (s->coalesced_flush_in_progress) {
|
1163 | 1cae88b9 | Avi Kivity | return;
|
1164 | 1cae88b9 | Avi Kivity | } |
1165 | 1cae88b9 | Avi Kivity | |
1166 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = true;
|
1167 | 1cae88b9 | Avi Kivity | |
1168 | 62a2744c | Sheng Yang | if (s->coalesced_mmio_ring) {
|
1169 | 62a2744c | Sheng Yang | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
|
1170 | f65ed4c1 | aliguori | while (ring->first != ring->last) {
|
1171 | f65ed4c1 | aliguori | struct kvm_coalesced_mmio *ent;
|
1172 | f65ed4c1 | aliguori | |
1173 | f65ed4c1 | aliguori | ent = &ring->coalesced_mmio[ring->first]; |
1174 | f65ed4c1 | aliguori | |
1175 | f65ed4c1 | aliguori | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
1176 | 85199474 | Marcelo Tosatti | smp_wmb(); |
1177 | f65ed4c1 | aliguori | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
|
1178 | f65ed4c1 | aliguori | } |
1179 | f65ed4c1 | aliguori | } |
1180 | 1cae88b9 | Avi Kivity | |
1181 | 1cae88b9 | Avi Kivity | s->coalesced_flush_in_progress = false;
|
1182 | f65ed4c1 | aliguori | } |
1183 | f65ed4c1 | aliguori | |
1184 | 2705d56a | Jan Kiszka | static void do_kvm_cpu_synchronize_state(void *_env) |
1185 | 4c0960c0 | Avi Kivity | { |
1186 | 2705d56a | Jan Kiszka | CPUState *env = _env; |
1187 | 2705d56a | Jan Kiszka | |
1188 | 9ded2744 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
1189 | 4c0960c0 | Avi Kivity | kvm_arch_get_registers(env); |
1190 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 1;
|
1191 | 4c0960c0 | Avi Kivity | } |
1192 | 4c0960c0 | Avi Kivity | } |
1193 | 4c0960c0 | Avi Kivity | |
1194 | 2705d56a | Jan Kiszka | void kvm_cpu_synchronize_state(CPUState *env)
|
1195 | 2705d56a | Jan Kiszka | { |
1196 | a426e122 | Jan Kiszka | if (!env->kvm_vcpu_dirty) {
|
1197 | 2705d56a | Jan Kiszka | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
1198 | a426e122 | Jan Kiszka | } |
1199 | 2705d56a | Jan Kiszka | } |
1200 | 2705d56a | Jan Kiszka | |
1201 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_reset(CPUState *env)
|
1202 | ea375f9a | Jan Kiszka | { |
1203 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
1204 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1205 | ea375f9a | Jan Kiszka | } |
1206 | ea375f9a | Jan Kiszka | |
1207 | ea375f9a | Jan Kiszka | void kvm_cpu_synchronize_post_init(CPUState *env)
|
1208 | ea375f9a | Jan Kiszka | { |
1209 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
1210 | ea375f9a | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1211 | ea375f9a | Jan Kiszka | } |
1212 | ea375f9a | Jan Kiszka | |
1213 | 05330448 | aliguori | int kvm_cpu_exec(CPUState *env)
|
1214 | 05330448 | aliguori | { |
1215 | 05330448 | aliguori | struct kvm_run *run = env->kvm_run;
|
1216 | 7cbb533f | Jan Kiszka | int ret, run_ret;
|
1217 | 05330448 | aliguori | |
1218 | 8c0d577e | Blue Swirl | DPRINTF("kvm_cpu_exec()\n");
|
1219 | 05330448 | aliguori | |
1220 | 99036865 | Jan Kiszka | if (kvm_arch_process_async_events(env)) {
|
1221 | 9ccfac9e | Jan Kiszka | env->exit_request = 0;
|
1222 | 6792a57b | Jan Kiszka | return EXCP_HLT;
|
1223 | 9ccfac9e | Jan Kiszka | } |
1224 | 0af691d7 | Marcelo Tosatti | |
1225 | 9ccfac9e | Jan Kiszka | do {
|
1226 | 9ded2744 | Jan Kiszka | if (env->kvm_vcpu_dirty) {
|
1227 | ea375f9a | Jan Kiszka | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
1228 | 9ded2744 | Jan Kiszka | env->kvm_vcpu_dirty = 0;
|
1229 | 4c0960c0 | Avi Kivity | } |
1230 | 4c0960c0 | Avi Kivity | |
1231 | 8c14c173 | Jan Kiszka | kvm_arch_pre_run(env, run); |
1232 | 9ccfac9e | Jan Kiszka | if (env->exit_request) {
|
1233 | 9ccfac9e | Jan Kiszka | DPRINTF("interrupt exit requested\n");
|
1234 | 9ccfac9e | Jan Kiszka | /*
|
1235 | 9ccfac9e | Jan Kiszka | * KVM requires us to reenter the kernel after IO exits to complete
|
1236 | 9ccfac9e | Jan Kiszka | * instruction emulation. This self-signal will ensure that we
|
1237 | 9ccfac9e | Jan Kiszka | * leave ASAP again.
|
1238 | 9ccfac9e | Jan Kiszka | */
|
1239 | 9ccfac9e | Jan Kiszka | qemu_cpu_kick_self(); |
1240 | 9ccfac9e | Jan Kiszka | } |
1241 | d549db5a | Glauber Costa | qemu_mutex_unlock_iothread(); |
1242 | 9ccfac9e | Jan Kiszka | |
1243 | 7cbb533f | Jan Kiszka | run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
|
1244 | 9ccfac9e | Jan Kiszka | |
1245 | d549db5a | Glauber Costa | qemu_mutex_lock_iothread(); |
1246 | 05330448 | aliguori | kvm_arch_post_run(env, run); |
1247 | 05330448 | aliguori | |
1248 | b0c883b5 | Jan Kiszka | kvm_flush_coalesced_mmio_buffer(); |
1249 | b0c883b5 | Jan Kiszka | |
1250 | 7cbb533f | Jan Kiszka | if (run_ret < 0) { |
1251 | dc77d341 | Jan Kiszka | if (run_ret == -EINTR || run_ret == -EAGAIN) {
|
1252 | dc77d341 | Jan Kiszka | DPRINTF("io window exit\n");
|
1253 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1254 | dc77d341 | Jan Kiszka | break;
|
1255 | dc77d341 | Jan Kiszka | } |
1256 | 7b011fbc | Michael Ellerman | fprintf(stderr, "error: kvm run failed %s\n",
|
1257 | 7b011fbc | Michael Ellerman | strerror(-run_ret)); |
1258 | 05330448 | aliguori | abort(); |
1259 | 05330448 | aliguori | } |
1260 | 05330448 | aliguori | |
1261 | 05330448 | aliguori | switch (run->exit_reason) {
|
1262 | 05330448 | aliguori | case KVM_EXIT_IO:
|
1263 | 8c0d577e | Blue Swirl | DPRINTF("handle_io\n");
|
1264 | b30e93e9 | Jan Kiszka | kvm_handle_io(run->io.port, |
1265 | b30e93e9 | Jan Kiszka | (uint8_t *)run + run->io.data_offset, |
1266 | b30e93e9 | Jan Kiszka | run->io.direction, |
1267 | b30e93e9 | Jan Kiszka | run->io.size, |
1268 | b30e93e9 | Jan Kiszka | run->io.count); |
1269 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1270 | 05330448 | aliguori | break;
|
1271 | 05330448 | aliguori | case KVM_EXIT_MMIO:
|
1272 | 8c0d577e | Blue Swirl | DPRINTF("handle_mmio\n");
|
1273 | 05330448 | aliguori | cpu_physical_memory_rw(run->mmio.phys_addr, |
1274 | 05330448 | aliguori | run->mmio.data, |
1275 | 05330448 | aliguori | run->mmio.len, |
1276 | 05330448 | aliguori | run->mmio.is_write); |
1277 | d73cd8f4 | Jan Kiszka | ret = 0;
|
1278 | 05330448 | aliguori | break;
|
1279 | 05330448 | aliguori | case KVM_EXIT_IRQ_WINDOW_OPEN:
|
1280 | 8c0d577e | Blue Swirl | DPRINTF("irq_window_open\n");
|
1281 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1282 | 05330448 | aliguori | break;
|
1283 | 05330448 | aliguori | case KVM_EXIT_SHUTDOWN:
|
1284 | 8c0d577e | Blue Swirl | DPRINTF("shutdown\n");
|
1285 | 05330448 | aliguori | qemu_system_reset_request(); |
1286 | d73cd8f4 | Jan Kiszka | ret = EXCP_INTERRUPT; |
1287 | 05330448 | aliguori | break;
|
1288 | 05330448 | aliguori | case KVM_EXIT_UNKNOWN:
|
1289 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1290 | bb44e0d1 | Jan Kiszka | (uint64_t)run->hw.hardware_exit_reason); |
1291 | 73aaec4a | Jan Kiszka | ret = -1;
|
1292 | 05330448 | aliguori | break;
|
1293 | 7c80eef8 | Marcelo Tosatti | case KVM_EXIT_INTERNAL_ERROR:
|
1294 | 73aaec4a | Jan Kiszka | ret = kvm_handle_internal_error(env, run); |
1295 | 7c80eef8 | Marcelo Tosatti | break;
|
1296 | 05330448 | aliguori | default:
|
1297 | 8c0d577e | Blue Swirl | DPRINTF("kvm_arch_handle_exit\n");
|
1298 | 05330448 | aliguori | ret = kvm_arch_handle_exit(env, run); |
1299 | 05330448 | aliguori | break;
|
1300 | 05330448 | aliguori | } |
1301 | d73cd8f4 | Jan Kiszka | } while (ret == 0); |
1302 | 05330448 | aliguori | |
1303 | 73aaec4a | Jan Kiszka | if (ret < 0) { |
1304 | f5c848ee | Jan Kiszka | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
1305 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_INTERNAL_ERROR); |
1306 | becfc390 | aliguori | } |
1307 | becfc390 | aliguori | |
1308 | 6792a57b | Jan Kiszka | env->exit_request = 0;
|
1309 | 05330448 | aliguori | return ret;
|
1310 | 05330448 | aliguori | } |
1311 | 05330448 | aliguori | |
1312 | 984b5181 | aliguori | int kvm_ioctl(KVMState *s, int type, ...) |
1313 | 05330448 | aliguori | { |
1314 | 05330448 | aliguori | int ret;
|
1315 | 984b5181 | aliguori | void *arg;
|
1316 | 984b5181 | aliguori | va_list ap; |
1317 | 05330448 | aliguori | |
1318 | 984b5181 | aliguori | va_start(ap, type); |
1319 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1320 | 984b5181 | aliguori | va_end(ap); |
1321 | 984b5181 | aliguori | |
1322 | 984b5181 | aliguori | ret = ioctl(s->fd, type, arg); |
1323 | a426e122 | Jan Kiszka | if (ret == -1) { |
1324 | 05330448 | aliguori | ret = -errno; |
1325 | a426e122 | Jan Kiszka | } |
1326 | 05330448 | aliguori | return ret;
|
1327 | 05330448 | aliguori | } |
1328 | 05330448 | aliguori | |
1329 | 984b5181 | aliguori | int kvm_vm_ioctl(KVMState *s, int type, ...) |
1330 | 05330448 | aliguori | { |
1331 | 05330448 | aliguori | int ret;
|
1332 | 984b5181 | aliguori | void *arg;
|
1333 | 984b5181 | aliguori | va_list ap; |
1334 | 984b5181 | aliguori | |
1335 | 984b5181 | aliguori | va_start(ap, type); |
1336 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1337 | 984b5181 | aliguori | va_end(ap); |
1338 | 05330448 | aliguori | |
1339 | 984b5181 | aliguori | ret = ioctl(s->vmfd, type, arg); |
1340 | a426e122 | Jan Kiszka | if (ret == -1) { |
1341 | 05330448 | aliguori | ret = -errno; |
1342 | a426e122 | Jan Kiszka | } |
1343 | 05330448 | aliguori | return ret;
|
1344 | 05330448 | aliguori | } |
1345 | 05330448 | aliguori | |
1346 | 984b5181 | aliguori | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
1347 | 05330448 | aliguori | { |
1348 | 05330448 | aliguori | int ret;
|
1349 | 984b5181 | aliguori | void *arg;
|
1350 | 984b5181 | aliguori | va_list ap; |
1351 | 984b5181 | aliguori | |
1352 | 984b5181 | aliguori | va_start(ap, type); |
1353 | 984b5181 | aliguori | arg = va_arg(ap, void *);
|
1354 | 984b5181 | aliguori | va_end(ap); |
1355 | 05330448 | aliguori | |
1356 | 984b5181 | aliguori | ret = ioctl(env->kvm_fd, type, arg); |
1357 | a426e122 | Jan Kiszka | if (ret == -1) { |
1358 | 05330448 | aliguori | ret = -errno; |
1359 | a426e122 | Jan Kiszka | } |
1360 | 05330448 | aliguori | return ret;
|
1361 | 05330448 | aliguori | } |
1362 | bd322087 | aliguori | |
1363 | bd322087 | aliguori | int kvm_has_sync_mmu(void) |
1364 | bd322087 | aliguori | { |
1365 | 94a8d39a | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
|
1366 | bd322087 | aliguori | } |
1367 | e22a25c9 | aliguori | |
1368 | a0fb002c | Jan Kiszka | int kvm_has_vcpu_events(void) |
1369 | a0fb002c | Jan Kiszka | { |
1370 | a0fb002c | Jan Kiszka | return kvm_state->vcpu_events;
|
1371 | a0fb002c | Jan Kiszka | } |
1372 | a0fb002c | Jan Kiszka | |
1373 | b0b1d690 | Jan Kiszka | int kvm_has_robust_singlestep(void) |
1374 | b0b1d690 | Jan Kiszka | { |
1375 | b0b1d690 | Jan Kiszka | return kvm_state->robust_singlestep;
|
1376 | b0b1d690 | Jan Kiszka | } |
1377 | b0b1d690 | Jan Kiszka | |
1378 | ff44f1a3 | Jan Kiszka | int kvm_has_debugregs(void) |
1379 | ff44f1a3 | Jan Kiszka | { |
1380 | ff44f1a3 | Jan Kiszka | return kvm_state->debugregs;
|
1381 | ff44f1a3 | Jan Kiszka | } |
1382 | ff44f1a3 | Jan Kiszka | |
1383 | f1665b21 | Sheng Yang | int kvm_has_xsave(void) |
1384 | f1665b21 | Sheng Yang | { |
1385 | f1665b21 | Sheng Yang | return kvm_state->xsave;
|
1386 | f1665b21 | Sheng Yang | } |
1387 | f1665b21 | Sheng Yang | |
1388 | f1665b21 | Sheng Yang | int kvm_has_xcrs(void) |
1389 | f1665b21 | Sheng Yang | { |
1390 | f1665b21 | Sheng Yang | return kvm_state->xcrs;
|
1391 | f1665b21 | Sheng Yang | } |
1392 | f1665b21 | Sheng Yang | |
1393 | d2f2b8a7 | Stefan Hajnoczi | int kvm_has_many_ioeventfds(void) |
1394 | d2f2b8a7 | Stefan Hajnoczi | { |
1395 | d2f2b8a7 | Stefan Hajnoczi | if (!kvm_enabled()) {
|
1396 | d2f2b8a7 | Stefan Hajnoczi | return 0; |
1397 | d2f2b8a7 | Stefan Hajnoczi | } |
1398 | d2f2b8a7 | Stefan Hajnoczi | return kvm_state->many_ioeventfds;
|
1399 | d2f2b8a7 | Stefan Hajnoczi | } |
1400 | d2f2b8a7 | Stefan Hajnoczi | |
1401 | 84b058d7 | Jan Kiszka | int kvm_has_gsi_routing(void) |
1402 | 84b058d7 | Jan Kiszka | { |
1403 | a9c5eb0d | Alexander Graf | #ifdef KVM_CAP_IRQ_ROUTING
|
1404 | 84b058d7 | Jan Kiszka | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
|
1405 | a9c5eb0d | Alexander Graf | #else
|
1406 | a9c5eb0d | Alexander Graf | return false; |
1407 | a9c5eb0d | Alexander Graf | #endif
|
1408 | 84b058d7 | Jan Kiszka | } |
1409 | 84b058d7 | Jan Kiszka | |
1410 | 9b5b76d4 | Jan Kiszka | int kvm_allows_irq0_override(void) |
1411 | 9b5b76d4 | Jan Kiszka | { |
1412 | 3d4b2649 | Jan Kiszka | return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing();
|
1413 | 9b5b76d4 | Jan Kiszka | } |
1414 | 9b5b76d4 | Jan Kiszka | |
1415 | 6f0437e8 | Jan Kiszka | void kvm_setup_guest_memory(void *start, size_t size) |
1416 | 6f0437e8 | Jan Kiszka | { |
1417 | 6f0437e8 | Jan Kiszka | if (!kvm_has_sync_mmu()) {
|
1418 | e78815a5 | Andreas Fรคrber | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
|
1419 | 6f0437e8 | Jan Kiszka | |
1420 | 6f0437e8 | Jan Kiszka | if (ret) {
|
1421 | e78815a5 | Andreas Fรคrber | perror("qemu_madvise");
|
1422 | e78815a5 | Andreas Fรคrber | fprintf(stderr, |
1423 | e78815a5 | Andreas Fรคrber | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
|
1424 | 6f0437e8 | Jan Kiszka | exit(1);
|
1425 | 6f0437e8 | Jan Kiszka | } |
1426 | 6f0437e8 | Jan Kiszka | } |
1427 | 6f0437e8 | Jan Kiszka | } |
1428 | 6f0437e8 | Jan Kiszka | |
1429 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1430 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
|
1431 | e22a25c9 | aliguori | target_ulong pc) |
1432 | e22a25c9 | aliguori | { |
1433 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1434 | e22a25c9 | aliguori | |
1435 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
1436 | a426e122 | Jan Kiszka | if (bp->pc == pc) {
|
1437 | e22a25c9 | aliguori | return bp;
|
1438 | a426e122 | Jan Kiszka | } |
1439 | e22a25c9 | aliguori | } |
1440 | e22a25c9 | aliguori | return NULL; |
1441 | e22a25c9 | aliguori | } |
1442 | e22a25c9 | aliguori | |
1443 | e22a25c9 | aliguori | int kvm_sw_breakpoints_active(CPUState *env)
|
1444 | e22a25c9 | aliguori | { |
1445 | 72cf2d4f | Blue Swirl | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
|
1446 | e22a25c9 | aliguori | } |
1447 | e22a25c9 | aliguori | |
1448 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data {
|
1449 | 452e4751 | Glauber Costa | struct kvm_guest_debug dbg;
|
1450 | 452e4751 | Glauber Costa | CPUState *env; |
1451 | 452e4751 | Glauber Costa | int err;
|
1452 | 452e4751 | Glauber Costa | }; |
1453 | 452e4751 | Glauber Costa | |
1454 | 452e4751 | Glauber Costa | static void kvm_invoke_set_guest_debug(void *data) |
1455 | 452e4751 | Glauber Costa | { |
1456 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data *dbg_data = data;
|
1457 | b3807725 | Jan Kiszka | CPUState *env = dbg_data->env; |
1458 | b3807725 | Jan Kiszka | |
1459 | b3807725 | Jan Kiszka | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
1460 | 452e4751 | Glauber Costa | } |
1461 | 452e4751 | Glauber Costa | |
1462 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1463 | e22a25c9 | aliguori | { |
1464 | 452e4751 | Glauber Costa | struct kvm_set_guest_debug_data data;
|
1465 | e22a25c9 | aliguori | |
1466 | b0b1d690 | Jan Kiszka | data.dbg.control = reinject_trap; |
1467 | e22a25c9 | aliguori | |
1468 | b0b1d690 | Jan Kiszka | if (env->singlestep_enabled) {
|
1469 | b0b1d690 | Jan Kiszka | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
1470 | b0b1d690 | Jan Kiszka | } |
1471 | 452e4751 | Glauber Costa | kvm_arch_update_guest_debug(env, &data.dbg); |
1472 | 452e4751 | Glauber Costa | data.env = env; |
1473 | e22a25c9 | aliguori | |
1474 | be41cbe0 | Jan Kiszka | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
1475 | 452e4751 | Glauber Costa | return data.err;
|
1476 | e22a25c9 | aliguori | } |
1477 | e22a25c9 | aliguori | |
1478 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1479 | e22a25c9 | aliguori | target_ulong len, int type)
|
1480 | e22a25c9 | aliguori | { |
1481 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1482 | e22a25c9 | aliguori | CPUState *env; |
1483 | e22a25c9 | aliguori | int err;
|
1484 | e22a25c9 | aliguori | |
1485 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1486 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1487 | e22a25c9 | aliguori | if (bp) {
|
1488 | e22a25c9 | aliguori | bp->use_count++; |
1489 | e22a25c9 | aliguori | return 0; |
1490 | e22a25c9 | aliguori | } |
1491 | e22a25c9 | aliguori | |
1492 | 7267c094 | Anthony Liguori | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
1493 | a426e122 | Jan Kiszka | if (!bp) {
|
1494 | e22a25c9 | aliguori | return -ENOMEM;
|
1495 | a426e122 | Jan Kiszka | } |
1496 | e22a25c9 | aliguori | |
1497 | e22a25c9 | aliguori | bp->pc = addr; |
1498 | e22a25c9 | aliguori | bp->use_count = 1;
|
1499 | e22a25c9 | aliguori | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
1500 | e22a25c9 | aliguori | if (err) {
|
1501 | 7267c094 | Anthony Liguori | g_free(bp); |
1502 | e22a25c9 | aliguori | return err;
|
1503 | e22a25c9 | aliguori | } |
1504 | e22a25c9 | aliguori | |
1505 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
1506 | e22a25c9 | aliguori | bp, entry); |
1507 | e22a25c9 | aliguori | } else {
|
1508 | e22a25c9 | aliguori | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
1509 | a426e122 | Jan Kiszka | if (err) {
|
1510 | e22a25c9 | aliguori | return err;
|
1511 | a426e122 | Jan Kiszka | } |
1512 | e22a25c9 | aliguori | } |
1513 | e22a25c9 | aliguori | |
1514 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1515 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1516 | a426e122 | Jan Kiszka | if (err) {
|
1517 | e22a25c9 | aliguori | return err;
|
1518 | a426e122 | Jan Kiszka | } |
1519 | e22a25c9 | aliguori | } |
1520 | e22a25c9 | aliguori | return 0; |
1521 | e22a25c9 | aliguori | } |
1522 | e22a25c9 | aliguori | |
1523 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1524 | e22a25c9 | aliguori | target_ulong len, int type)
|
1525 | e22a25c9 | aliguori | { |
1526 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp;
|
1527 | e22a25c9 | aliguori | CPUState *env; |
1528 | e22a25c9 | aliguori | int err;
|
1529 | e22a25c9 | aliguori | |
1530 | e22a25c9 | aliguori | if (type == GDB_BREAKPOINT_SW) {
|
1531 | e22a25c9 | aliguori | bp = kvm_find_sw_breakpoint(current_env, addr); |
1532 | a426e122 | Jan Kiszka | if (!bp) {
|
1533 | e22a25c9 | aliguori | return -ENOENT;
|
1534 | a426e122 | Jan Kiszka | } |
1535 | e22a25c9 | aliguori | |
1536 | e22a25c9 | aliguori | if (bp->use_count > 1) { |
1537 | e22a25c9 | aliguori | bp->use_count--; |
1538 | e22a25c9 | aliguori | return 0; |
1539 | e22a25c9 | aliguori | } |
1540 | e22a25c9 | aliguori | |
1541 | e22a25c9 | aliguori | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
1542 | a426e122 | Jan Kiszka | if (err) {
|
1543 | e22a25c9 | aliguori | return err;
|
1544 | a426e122 | Jan Kiszka | } |
1545 | e22a25c9 | aliguori | |
1546 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
1547 | 7267c094 | Anthony Liguori | g_free(bp); |
1548 | e22a25c9 | aliguori | } else {
|
1549 | e22a25c9 | aliguori | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
1550 | a426e122 | Jan Kiszka | if (err) {
|
1551 | e22a25c9 | aliguori | return err;
|
1552 | a426e122 | Jan Kiszka | } |
1553 | e22a25c9 | aliguori | } |
1554 | e22a25c9 | aliguori | |
1555 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1556 | e22a25c9 | aliguori | err = kvm_update_guest_debug(env, 0);
|
1557 | a426e122 | Jan Kiszka | if (err) {
|
1558 | e22a25c9 | aliguori | return err;
|
1559 | a426e122 | Jan Kiszka | } |
1560 | e22a25c9 | aliguori | } |
1561 | e22a25c9 | aliguori | return 0; |
1562 | e22a25c9 | aliguori | } |
1563 | e22a25c9 | aliguori | |
1564 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1565 | e22a25c9 | aliguori | { |
1566 | e22a25c9 | aliguori | struct kvm_sw_breakpoint *bp, *next;
|
1567 | e22a25c9 | aliguori | KVMState *s = current_env->kvm_state; |
1568 | e22a25c9 | aliguori | CPUState *env; |
1569 | e22a25c9 | aliguori | |
1570 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
1571 | e22a25c9 | aliguori | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
1572 | e22a25c9 | aliguori | /* Try harder to find a CPU that currently sees the breakpoint. */
|
1573 | e22a25c9 | aliguori | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1574 | a426e122 | Jan Kiszka | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
1575 | e22a25c9 | aliguori | break;
|
1576 | a426e122 | Jan Kiszka | } |
1577 | e22a25c9 | aliguori | } |
1578 | e22a25c9 | aliguori | } |
1579 | e22a25c9 | aliguori | } |
1580 | e22a25c9 | aliguori | kvm_arch_remove_all_hw_breakpoints(); |
1581 | e22a25c9 | aliguori | |
1582 | a426e122 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1583 | e22a25c9 | aliguori | kvm_update_guest_debug(env, 0);
|
1584 | a426e122 | Jan Kiszka | } |
1585 | e22a25c9 | aliguori | } |
1586 | e22a25c9 | aliguori | |
1587 | e22a25c9 | aliguori | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
1588 | e22a25c9 | aliguori | |
1589 | e22a25c9 | aliguori | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1590 | e22a25c9 | aliguori | { |
1591 | e22a25c9 | aliguori | return -EINVAL;
|
1592 | e22a25c9 | aliguori | } |
1593 | e22a25c9 | aliguori | |
1594 | e22a25c9 | aliguori | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
1595 | e22a25c9 | aliguori | target_ulong len, int type)
|
1596 | e22a25c9 | aliguori | { |
1597 | e22a25c9 | aliguori | return -EINVAL;
|
1598 | e22a25c9 | aliguori | } |
1599 | e22a25c9 | aliguori | |
1600 | e22a25c9 | aliguori | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
1601 | e22a25c9 | aliguori | target_ulong len, int type)
|
1602 | e22a25c9 | aliguori | { |
1603 | e22a25c9 | aliguori | return -EINVAL;
|
1604 | e22a25c9 | aliguori | } |
1605 | e22a25c9 | aliguori | |
1606 | e22a25c9 | aliguori | void kvm_remove_all_breakpoints(CPUState *current_env)
|
1607 | e22a25c9 | aliguori | { |
1608 | e22a25c9 | aliguori | } |
1609 | e22a25c9 | aliguori | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
1610 | cc84de95 | Marcelo Tosatti | |
1611 | cc84de95 | Marcelo Tosatti | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) |
1612 | cc84de95 | Marcelo Tosatti | { |
1613 | cc84de95 | Marcelo Tosatti | struct kvm_signal_mask *sigmask;
|
1614 | cc84de95 | Marcelo Tosatti | int r;
|
1615 | cc84de95 | Marcelo Tosatti | |
1616 | a426e122 | Jan Kiszka | if (!sigset) {
|
1617 | cc84de95 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
1618 | a426e122 | Jan Kiszka | } |
1619 | cc84de95 | Marcelo Tosatti | |
1620 | 7267c094 | Anthony Liguori | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
1621 | cc84de95 | Marcelo Tosatti | |
1622 | cc84de95 | Marcelo Tosatti | sigmask->len = 8;
|
1623 | cc84de95 | Marcelo Tosatti | memcpy(sigmask->sigset, sigset, sizeof(*sigset));
|
1624 | cc84de95 | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
1625 | 7267c094 | Anthony Liguori | g_free(sigmask); |
1626 | cc84de95 | Marcelo Tosatti | |
1627 | cc84de95 | Marcelo Tosatti | return r;
|
1628 | cc84de95 | Marcelo Tosatti | } |
1629 | ca821806 | Michael S. Tsirkin | |
1630 | 44f1a3d8 | Cam Macdonell | int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign) |
1631 | 44f1a3d8 | Cam Macdonell | { |
1632 | 44f1a3d8 | Cam Macdonell | int ret;
|
1633 | 44f1a3d8 | Cam Macdonell | struct kvm_ioeventfd iofd;
|
1634 | 44f1a3d8 | Cam Macdonell | |
1635 | 44f1a3d8 | Cam Macdonell | iofd.datamatch = val; |
1636 | 44f1a3d8 | Cam Macdonell | iofd.addr = addr; |
1637 | 44f1a3d8 | Cam Macdonell | iofd.len = 4;
|
1638 | 44f1a3d8 | Cam Macdonell | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
1639 | 44f1a3d8 | Cam Macdonell | iofd.fd = fd; |
1640 | 44f1a3d8 | Cam Macdonell | |
1641 | 44f1a3d8 | Cam Macdonell | if (!kvm_enabled()) {
|
1642 | 44f1a3d8 | Cam Macdonell | return -ENOSYS;
|
1643 | 44f1a3d8 | Cam Macdonell | } |
1644 | 44f1a3d8 | Cam Macdonell | |
1645 | 44f1a3d8 | Cam Macdonell | if (!assign) {
|
1646 | 44f1a3d8 | Cam Macdonell | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1647 | 44f1a3d8 | Cam Macdonell | } |
1648 | 44f1a3d8 | Cam Macdonell | |
1649 | 44f1a3d8 | Cam Macdonell | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
1650 | 44f1a3d8 | Cam Macdonell | |
1651 | 44f1a3d8 | Cam Macdonell | if (ret < 0) { |
1652 | 44f1a3d8 | Cam Macdonell | return -errno;
|
1653 | 44f1a3d8 | Cam Macdonell | } |
1654 | 44f1a3d8 | Cam Macdonell | |
1655 | 44f1a3d8 | Cam Macdonell | return 0; |
1656 | 44f1a3d8 | Cam Macdonell | } |
1657 | 44f1a3d8 | Cam Macdonell | |
1658 | ca821806 | Michael S. Tsirkin | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
1659 | ca821806 | Michael S. Tsirkin | { |
1660 | ca821806 | Michael S. Tsirkin | struct kvm_ioeventfd kick = {
|
1661 | ca821806 | Michael S. Tsirkin | .datamatch = val, |
1662 | ca821806 | Michael S. Tsirkin | .addr = addr, |
1663 | ca821806 | Michael S. Tsirkin | .len = 2,
|
1664 | ca821806 | Michael S. Tsirkin | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
1665 | ca821806 | Michael S. Tsirkin | .fd = fd, |
1666 | ca821806 | Michael S. Tsirkin | }; |
1667 | ca821806 | Michael S. Tsirkin | int r;
|
1668 | a426e122 | Jan Kiszka | if (!kvm_enabled()) {
|
1669 | ca821806 | Michael S. Tsirkin | return -ENOSYS;
|
1670 | a426e122 | Jan Kiszka | } |
1671 | a426e122 | Jan Kiszka | if (!assign) {
|
1672 | ca821806 | Michael S. Tsirkin | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
1673 | a426e122 | Jan Kiszka | } |
1674 | ca821806 | Michael S. Tsirkin | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
1675 | a426e122 | Jan Kiszka | if (r < 0) { |
1676 | ca821806 | Michael S. Tsirkin | return r;
|
1677 | a426e122 | Jan Kiszka | } |
1678 | ca821806 | Michael S. Tsirkin | return 0; |
1679 | 98c8573e | Paolo Bonzini | } |
1680 | a1b87fe0 | Jan Kiszka | |
1681 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr) |
1682 | a1b87fe0 | Jan Kiszka | { |
1683 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus_vcpu(env, code, addr);
|
1684 | a1b87fe0 | Jan Kiszka | } |
1685 | a1b87fe0 | Jan Kiszka | |
1686 | a1b87fe0 | Jan Kiszka | int kvm_on_sigbus(int code, void *addr) |
1687 | a1b87fe0 | Jan Kiszka | { |
1688 | a1b87fe0 | Jan Kiszka | return kvm_arch_on_sigbus(code, addr);
|
1689 | a1b87fe0 | Jan Kiszka | } |