aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU KVM support |
| 3 | * |
| 4 | * Copyright IBM, Corp. 2008 |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 5 | * Red Hat, Inc. 2008 |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 6 | * |
| 7 | * Authors: |
| 8 | * Anthony Liguori <aliguori@us.ibm.com> |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 9 | * Glauber Costa <gcosta@redhat.com> |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 10 | * |
| 11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 12 | * See the COPYING file in the top-level directory. |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #include <sys/types.h> |
| 17 | #include <sys/ioctl.h> |
| 18 | #include <sys/mman.h> |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 19 | #include <stdarg.h> |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 20 | |
| 21 | #include <linux/kvm.h> |
| 22 | |
| 23 | #include "qemu-common.h" |
Marcelo Tosatti | 8519947 | 2010-02-22 13:57:54 -0300 | [diff] [blame] | 24 | #include "qemu-barrier.h" |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 25 | #include "sysemu.h" |
Jan Kiszka | d33a181 | 2009-05-02 00:29:37 +0200 | [diff] [blame] | 26 | #include "hw/hw.h" |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 27 | #include "gdbstub.h" |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 28 | #include "kvm.h" |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 29 | #include "bswap.h" |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 30 | #include "memory.h" |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 31 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 32 | /* This check must be after config-host.h is included */ |
| 33 | #ifdef CONFIG_EVENTFD |
| 34 | #include <sys/eventfd.h> |
| 35 | #endif |
| 36 | |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 37 | /* KVM uses PAGE_SIZE in it's definition of COALESCED_MMIO_MAX */ |
| 38 | #define PAGE_SIZE TARGET_PAGE_SIZE |
| 39 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 40 | //#define DEBUG_KVM |
| 41 | |
| 42 | #ifdef DEBUG_KVM |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 43 | #define DPRINTF(fmt, ...) \ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 44 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
| 45 | #else |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 46 | #define DPRINTF(fmt, ...) \ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 47 | do { } while (0) |
| 48 | #endif |
| 49 | |
aliguori | 34fc643 | 2008-11-19 17:41:58 +0000 | [diff] [blame] | 50 | typedef struct KVMSlot |
| 51 | { |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 52 | target_phys_addr_t start_addr; |
| 53 | ram_addr_t memory_size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 54 | void *ram; |
aliguori | 34fc643 | 2008-11-19 17:41:58 +0000 | [diff] [blame] | 55 | int slot; |
| 56 | int flags; |
| 57 | } KVMSlot; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 58 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 59 | typedef struct kvm_dirty_log KVMDirtyLog; |
| 60 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 61 | struct KVMState |
| 62 | { |
| 63 | KVMSlot slots[32]; |
| 64 | int fd; |
| 65 | int vmfd; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 66 | int coalesced_mmio; |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 67 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
Avi Kivity | 1cae88b | 2011-10-18 19:43:12 +0200 | [diff] [blame] | 68 | bool coalesced_flush_in_progress; |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 69 | int broken_set_mem_region; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 70 | int migration_log; |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 71 | int vcpu_events; |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 72 | int robust_singlestep; |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 73 | int debugregs; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 74 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
| 75 | struct kvm_sw_breakpoint_head kvm_sw_breakpoints; |
| 76 | #endif |
Glauber Costa | 6f725c1 | 2009-07-21 12:26:58 -0300 | [diff] [blame] | 77 | int irqchip_in_kernel; |
| 78 | int pit_in_kernel; |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 79 | int xsave, xcrs; |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 80 | int many_ioeventfds; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 81 | }; |
| 82 | |
Jan Kiszka | 6a7af8c | 2011-02-07 12:19:25 +0100 | [diff] [blame] | 83 | KVMState *kvm_state; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 84 | |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 85 | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
| 86 | KVM_CAP_INFO(USER_MEMORY), |
| 87 | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
| 88 | KVM_CAP_LAST_INFO |
| 89 | }; |
| 90 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 91 | static KVMSlot *kvm_alloc_slot(KVMState *s) |
| 92 | { |
| 93 | int i; |
| 94 | |
| 95 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 96 | if (s->slots[i].memory_size == 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 97 | return &s->slots[i]; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 98 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 99 | } |
| 100 | |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 101 | fprintf(stderr, "%s: no free slot available\n", __func__); |
| 102 | abort(); |
| 103 | } |
| 104 | |
| 105 | static KVMSlot *kvm_lookup_matching_slot(KVMState *s, |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 106 | target_phys_addr_t start_addr, |
| 107 | target_phys_addr_t end_addr) |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 108 | { |
| 109 | int i; |
| 110 | |
| 111 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 112 | KVMSlot *mem = &s->slots[i]; |
| 113 | |
| 114 | if (start_addr == mem->start_addr && |
| 115 | end_addr == mem->start_addr + mem->memory_size) { |
| 116 | return mem; |
| 117 | } |
| 118 | } |
| 119 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 120 | return NULL; |
| 121 | } |
| 122 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 123 | /* |
| 124 | * Find overlapping slot with lowest start address |
| 125 | */ |
| 126 | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s, |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 127 | target_phys_addr_t start_addr, |
| 128 | target_phys_addr_t end_addr) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 129 | { |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 130 | KVMSlot *found = NULL; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 131 | int i; |
| 132 | |
| 133 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 134 | KVMSlot *mem = &s->slots[i]; |
| 135 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 136 | if (mem->memory_size == 0 || |
| 137 | (found && found->start_addr < mem->start_addr)) { |
| 138 | continue; |
| 139 | } |
| 140 | |
| 141 | if (end_addr > mem->start_addr && |
| 142 | start_addr < mem->start_addr + mem->memory_size) { |
| 143 | found = mem; |
| 144 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 145 | } |
| 146 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 147 | return found; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 148 | } |
| 149 | |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 150 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
| 151 | target_phys_addr_t *phys_addr) |
Huang Ying | 983dfc3 | 2010-10-11 15:31:20 -0300 | [diff] [blame] | 152 | { |
| 153 | int i; |
| 154 | |
| 155 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 156 | KVMSlot *mem = &s->slots[i]; |
| 157 | |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 158 | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) { |
| 159 | *phys_addr = mem->start_addr + (ram - mem->ram); |
Huang Ying | 983dfc3 | 2010-10-11 15:31:20 -0300 | [diff] [blame] | 160 | return 1; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 167 | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
| 168 | { |
| 169 | struct kvm_userspace_memory_region mem; |
| 170 | |
| 171 | mem.slot = slot->slot; |
| 172 | mem.guest_phys_addr = slot->start_addr; |
| 173 | mem.memory_size = slot->memory_size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 174 | mem.userspace_addr = (unsigned long)slot->ram; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 175 | mem.flags = slot->flags; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 176 | if (s->migration_log) { |
| 177 | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
| 178 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 179 | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
| 180 | } |
| 181 | |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 182 | static void kvm_reset_vcpu(void *opaque) |
| 183 | { |
| 184 | CPUState *env = opaque; |
| 185 | |
Jan Kiszka | caa5af0 | 2009-11-06 19:39:24 +0100 | [diff] [blame] | 186 | kvm_arch_reset_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 187 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 188 | |
Glauber Costa | 6f725c1 | 2009-07-21 12:26:58 -0300 | [diff] [blame] | 189 | int kvm_irqchip_in_kernel(void) |
| 190 | { |
| 191 | return kvm_state->irqchip_in_kernel; |
| 192 | } |
| 193 | |
| 194 | int kvm_pit_in_kernel(void) |
| 195 | { |
| 196 | return kvm_state->pit_in_kernel; |
| 197 | } |
| 198 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 199 | int kvm_init_vcpu(CPUState *env) |
| 200 | { |
| 201 | KVMState *s = kvm_state; |
| 202 | long mmap_size; |
| 203 | int ret; |
| 204 | |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 205 | DPRINTF("kvm_init_vcpu\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 206 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 207 | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 208 | if (ret < 0) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 209 | DPRINTF("kvm_create_vcpu failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 210 | goto err; |
| 211 | } |
| 212 | |
| 213 | env->kvm_fd = ret; |
| 214 | env->kvm_state = s; |
Jan Kiszka | d841b6c | 2011-03-15 12:26:20 +0100 | [diff] [blame] | 215 | env->kvm_vcpu_dirty = 1; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 216 | |
| 217 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); |
| 218 | if (mmap_size < 0) { |
Jan Kiszka | 748a680 | 2011-02-01 22:15:48 +0100 | [diff] [blame] | 219 | ret = mmap_size; |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 220 | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 221 | goto err; |
| 222 | } |
| 223 | |
| 224 | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| 225 | env->kvm_fd, 0); |
| 226 | if (env->kvm_run == MAP_FAILED) { |
| 227 | ret = -errno; |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 228 | DPRINTF("mmap'ing vcpu state failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 229 | goto err; |
| 230 | } |
| 231 | |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 232 | if (s->coalesced_mmio && !s->coalesced_mmio_ring) { |
| 233 | s->coalesced_mmio_ring = |
| 234 | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE; |
| 235 | } |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 236 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 237 | ret = kvm_arch_init_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 238 | if (ret == 0) { |
Jan Kiszka | a08d436 | 2009-06-27 09:25:07 +0200 | [diff] [blame] | 239 | qemu_register_reset(kvm_reset_vcpu, env); |
Jan Kiszka | caa5af0 | 2009-11-06 19:39:24 +0100 | [diff] [blame] | 240 | kvm_arch_reset_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 241 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 242 | err: |
| 243 | return ret; |
| 244 | } |
| 245 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 246 | /* |
| 247 | * dirty pages logging control |
| 248 | */ |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 249 | |
| 250 | static int kvm_mem_flags(KVMState *s, bool log_dirty) |
| 251 | { |
| 252 | return log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0; |
| 253 | } |
| 254 | |
| 255 | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 256 | { |
| 257 | KVMState *s = kvm_state; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 258 | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 259 | int old_flags; |
| 260 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 261 | old_flags = mem->flags; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 262 | |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 263 | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty); |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 264 | mem->flags = flags; |
| 265 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 266 | /* If nothing changed effectively, no need to issue ioctl */ |
| 267 | if (s->migration_log) { |
| 268 | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
| 269 | } |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 270 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 271 | if (flags == old_flags) { |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 272 | return 0; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 273 | } |
| 274 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 275 | return kvm_set_user_memory_region(s, mem); |
| 276 | } |
| 277 | |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 278 | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
| 279 | ram_addr_t size, bool log_dirty) |
| 280 | { |
| 281 | KVMState *s = kvm_state; |
| 282 | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
| 283 | |
| 284 | if (mem == NULL) { |
| 285 | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
| 286 | TARGET_FMT_plx "\n", __func__, phys_addr, |
| 287 | (target_phys_addr_t)(phys_addr + size - 1)); |
| 288 | return -EINVAL; |
| 289 | } |
| 290 | return kvm_slot_dirty_pages_log_change(mem, log_dirty); |
| 291 | } |
| 292 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 293 | static void kvm_log_start(MemoryListener *listener, |
| 294 | MemoryRegionSection *section) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 295 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 296 | int r; |
| 297 | |
| 298 | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
| 299 | section->size, true); |
| 300 | if (r < 0) { |
| 301 | abort(); |
| 302 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 303 | } |
| 304 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 305 | static void kvm_log_stop(MemoryListener *listener, |
| 306 | MemoryRegionSection *section) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 307 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 308 | int r; |
| 309 | |
| 310 | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
| 311 | section->size, false); |
| 312 | if (r < 0) { |
| 313 | abort(); |
| 314 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 315 | } |
| 316 | |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 317 | static int kvm_set_migration_log(int enable) |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 318 | { |
| 319 | KVMState *s = kvm_state; |
| 320 | KVMSlot *mem; |
| 321 | int i, err; |
| 322 | |
| 323 | s->migration_log = enable; |
| 324 | |
| 325 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 326 | mem = &s->slots[i]; |
| 327 | |
Alex Williamson | 70fedd7 | 2010-07-14 13:36:49 -0600 | [diff] [blame] | 328 | if (!mem->memory_size) { |
| 329 | continue; |
| 330 | } |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 331 | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) { |
| 332 | continue; |
| 333 | } |
| 334 | err = kvm_set_user_memory_region(s, mem); |
| 335 | if (err) { |
| 336 | return err; |
| 337 | } |
| 338 | } |
| 339 | return 0; |
| 340 | } |
| 341 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 342 | /* get kvm's dirty pages bitmap and update qemu's */ |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 343 | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
| 344 | unsigned long *bitmap) |
Alexander Graf | 96c1606 | 2009-07-27 12:49:56 +0200 | [diff] [blame] | 345 | { |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 346 | unsigned int i, j; |
Benjamin Herrenschmidt | aa90fec | 2012-01-11 19:46:21 +0000 | [diff] [blame^] | 347 | unsigned long page_number, c; |
| 348 | target_phys_addr_t addr, addr1; |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 349 | unsigned int len = ((section->size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 350 | |
| 351 | /* |
| 352 | * bitmap-traveling is faster than memory-traveling (for addr...) |
| 353 | * especially when most of the memory is not dirty. |
| 354 | */ |
| 355 | for (i = 0; i < len; i++) { |
| 356 | if (bitmap[i] != 0) { |
| 357 | c = leul_to_cpu(bitmap[i]); |
| 358 | do { |
| 359 | j = ffsl(c) - 1; |
| 360 | c &= ~(1ul << j); |
| 361 | page_number = i * HOST_LONG_BITS + j; |
| 362 | addr1 = page_number * TARGET_PAGE_SIZE; |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 363 | addr = section->offset_within_region + addr1; |
| 364 | memory_region_set_dirty(section->mr, addr); |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 365 | } while (c != 0); |
| 366 | } |
| 367 | } |
| 368 | return 0; |
Alexander Graf | 96c1606 | 2009-07-27 12:49:56 +0200 | [diff] [blame] | 369 | } |
| 370 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 371 | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
| 372 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 373 | /** |
| 374 | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space |
| 375 | * This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty(). |
| 376 | * This means all bits are set to dirty. |
| 377 | * |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 378 | * @start_add: start of logged region. |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 379 | * @end_addr: end of logged region. |
| 380 | */ |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 381 | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 382 | { |
| 383 | KVMState *s = kvm_state; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 384 | unsigned long size, allocated_size = 0; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 385 | KVMDirtyLog d; |
| 386 | KVMSlot *mem; |
| 387 | int ret = 0; |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 388 | target_phys_addr_t start_addr = section->offset_within_address_space; |
| 389 | target_phys_addr_t end_addr = start_addr + section->size; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 390 | |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 391 | d.dirty_bitmap = NULL; |
| 392 | while (start_addr < end_addr) { |
| 393 | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
| 394 | if (mem == NULL) { |
| 395 | break; |
| 396 | } |
| 397 | |
Michael Tokarev | 51b0c60 | 2011-04-26 20:13:49 +0400 | [diff] [blame] | 398 | /* XXX bad kernel interface alert |
| 399 | * For dirty bitmap, kernel allocates array of size aligned to |
| 400 | * bits-per-long. But for case when the kernel is 64bits and |
| 401 | * the userspace is 32bits, userspace can't align to the same |
| 402 | * bits-per-long, since sizeof(long) is different between kernel |
| 403 | * and user space. This way, userspace will provide buffer which |
| 404 | * may be 4 bytes less than the kernel will use, resulting in |
| 405 | * userspace memory corruption (which is not detectable by valgrind |
| 406 | * too, in most cases). |
| 407 | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in |
| 408 | * a hope that sizeof(long) wont become >8 any time soon. |
| 409 | */ |
| 410 | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
| 411 | /*HOST_LONG_BITS*/ 64) / 8; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 412 | if (!d.dirty_bitmap) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 413 | d.dirty_bitmap = g_malloc(size); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 414 | } else if (size > allocated_size) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 415 | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 416 | } |
| 417 | allocated_size = size; |
| 418 | memset(d.dirty_bitmap, 0, allocated_size); |
| 419 | |
| 420 | d.slot = mem->slot; |
| 421 | |
Anthony Liguori | 6e489f3 | 2009-07-27 15:23:59 -0500 | [diff] [blame] | 422 | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 423 | DPRINTF("ioctl failed %d\n", errno); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 424 | ret = -1; |
| 425 | break; |
| 426 | } |
| 427 | |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 428 | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 429 | start_addr = mem->start_addr + mem->memory_size; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 430 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 431 | g_free(d.dirty_bitmap); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 432 | |
| 433 | return ret; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 434 | } |
| 435 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 436 | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size) |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 437 | { |
| 438 | int ret = -ENOSYS; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 439 | KVMState *s = kvm_state; |
| 440 | |
| 441 | if (s->coalesced_mmio) { |
| 442 | struct kvm_coalesced_mmio_zone zone; |
| 443 | |
| 444 | zone.addr = start; |
| 445 | zone.size = size; |
| 446 | |
| 447 | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
| 448 | } |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 449 | |
| 450 | return ret; |
| 451 | } |
| 452 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 453 | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size) |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 454 | { |
| 455 | int ret = -ENOSYS; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 456 | KVMState *s = kvm_state; |
| 457 | |
| 458 | if (s->coalesced_mmio) { |
| 459 | struct kvm_coalesced_mmio_zone zone; |
| 460 | |
| 461 | zone.addr = start; |
| 462 | zone.size = size; |
| 463 | |
| 464 | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
| 465 | } |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 466 | |
| 467 | return ret; |
| 468 | } |
| 469 | |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 470 | int kvm_check_extension(KVMState *s, unsigned int extension) |
| 471 | { |
| 472 | int ret; |
| 473 | |
| 474 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
| 475 | if (ret < 0) { |
| 476 | ret = 0; |
| 477 | } |
| 478 | |
| 479 | return ret; |
| 480 | } |
| 481 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 482 | static int kvm_check_many_ioeventfds(void) |
| 483 | { |
Stefan Hajnoczi | d0dcac8 | 2011-01-25 16:17:14 +0000 | [diff] [blame] | 484 | /* Userspace can use ioeventfd for io notification. This requires a host |
| 485 | * that supports eventfd(2) and an I/O thread; since eventfd does not |
| 486 | * support SIGIO it cannot interrupt the vcpu. |
| 487 | * |
| 488 | * Older kernels have a 6 device limit on the KVM io bus. Find out so we |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 489 | * can avoid creating too many ioeventfds. |
| 490 | */ |
Anthony Liguori | 12d4536 | 2011-08-22 08:24:58 -0500 | [diff] [blame] | 491 | #if defined(CONFIG_EVENTFD) |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 492 | int ioeventfds[7]; |
| 493 | int i, ret = 0; |
| 494 | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
| 495 | ioeventfds[i] = eventfd(0, EFD_CLOEXEC); |
| 496 | if (ioeventfds[i] < 0) { |
| 497 | break; |
| 498 | } |
| 499 | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
| 500 | if (ret < 0) { |
| 501 | close(ioeventfds[i]); |
| 502 | break; |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | /* Decide whether many devices are supported or not */ |
| 507 | ret = i == ARRAY_SIZE(ioeventfds); |
| 508 | |
| 509 | while (i-- > 0) { |
| 510 | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
| 511 | close(ioeventfds[i]); |
| 512 | } |
| 513 | return ret; |
| 514 | #else |
| 515 | return 0; |
| 516 | #endif |
| 517 | } |
| 518 | |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 519 | static const KVMCapabilityInfo * |
| 520 | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list) |
| 521 | { |
| 522 | while (list->name) { |
| 523 | if (!kvm_check_extension(s, list->value)) { |
| 524 | return list; |
| 525 | } |
| 526 | list++; |
| 527 | } |
| 528 | return NULL; |
| 529 | } |
| 530 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 531 | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 532 | { |
| 533 | KVMState *s = kvm_state; |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 534 | KVMSlot *mem, old; |
| 535 | int err; |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 536 | MemoryRegion *mr = section->mr; |
| 537 | bool log_dirty = memory_region_is_logging(mr); |
| 538 | target_phys_addr_t start_addr = section->offset_within_address_space; |
| 539 | ram_addr_t size = section->size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 540 | void *ram = NULL; |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 541 | |
Gleb Natapov | 14542fe | 2010-07-28 18:13:23 +0300 | [diff] [blame] | 542 | /* kvm works in page size chunks, but the function may be called |
| 543 | with sub-page size and unaligned start address. */ |
| 544 | size = TARGET_PAGE_ALIGN(size); |
| 545 | start_addr = TARGET_PAGE_ALIGN(start_addr); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 546 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 547 | if (!memory_region_is_ram(mr)) { |
| 548 | return; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 549 | } |
| 550 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 551 | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region; |
| 552 | |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 553 | while (1) { |
| 554 | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
| 555 | if (!mem) { |
| 556 | break; |
| 557 | } |
| 558 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 559 | if (add && start_addr >= mem->start_addr && |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 560 | (start_addr + size <= mem->start_addr + mem->memory_size) && |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 561 | (ram - start_addr == mem->ram - mem->start_addr)) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 562 | /* The new slot fits into the existing one and comes with |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 563 | * identical parameters - update flags and done. */ |
| 564 | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 565 | return; |
| 566 | } |
| 567 | |
| 568 | old = *mem; |
| 569 | |
Avi Kivity | 3fbffb6 | 2012-01-15 16:13:59 +0200 | [diff] [blame] | 570 | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) { |
| 571 | kvm_physical_sync_dirty_bitmap(section); |
| 572 | } |
| 573 | |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 574 | /* unregister the overlapping slot */ |
| 575 | mem->memory_size = 0; |
| 576 | err = kvm_set_user_memory_region(s, mem); |
| 577 | if (err) { |
| 578 | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n", |
| 579 | __func__, strerror(-err)); |
| 580 | abort(); |
| 581 | } |
| 582 | |
| 583 | /* Workaround for older KVM versions: we can't join slots, even not by |
| 584 | * unregistering the previous ones and then registering the larger |
| 585 | * slot. We have to maintain the existing fragmentation. Sigh. |
| 586 | * |
| 587 | * This workaround assumes that the new slot starts at the same |
| 588 | * address as the first existing one. If not or if some overlapping |
| 589 | * slot comes around later, we will fail (not seen in practice so far) |
| 590 | * - and actually require a recent KVM version. */ |
| 591 | if (s->broken_set_mem_region && |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 592 | old.start_addr == start_addr && old.memory_size < size && add) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 593 | mem = kvm_alloc_slot(s); |
| 594 | mem->memory_size = old.memory_size; |
| 595 | mem->start_addr = old.start_addr; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 596 | mem->ram = old.ram; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 597 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 598 | |
| 599 | err = kvm_set_user_memory_region(s, mem); |
| 600 | if (err) { |
| 601 | fprintf(stderr, "%s: error updating slot: %s\n", __func__, |
| 602 | strerror(-err)); |
| 603 | abort(); |
| 604 | } |
| 605 | |
| 606 | start_addr += old.memory_size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 607 | ram += old.memory_size; |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 608 | size -= old.memory_size; |
| 609 | continue; |
| 610 | } |
| 611 | |
| 612 | /* register prefix slot */ |
| 613 | if (old.start_addr < start_addr) { |
| 614 | mem = kvm_alloc_slot(s); |
| 615 | mem->memory_size = start_addr - old.start_addr; |
| 616 | mem->start_addr = old.start_addr; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 617 | mem->ram = old.ram; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 618 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 619 | |
| 620 | err = kvm_set_user_memory_region(s, mem); |
| 621 | if (err) { |
| 622 | fprintf(stderr, "%s: error registering prefix slot: %s\n", |
| 623 | __func__, strerror(-err)); |
Alexander Graf | d4d6868 | 2011-04-16 10:15:11 +0200 | [diff] [blame] | 624 | #ifdef TARGET_PPC |
| 625 | fprintf(stderr, "%s: This is probably because your kernel's " \ |
| 626 | "PAGE_SIZE is too big. Please try to use 4k " \ |
| 627 | "PAGE_SIZE!\n", __func__); |
| 628 | #endif |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 629 | abort(); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /* register suffix slot */ |
| 634 | if (old.start_addr + old.memory_size > start_addr + size) { |
| 635 | ram_addr_t size_delta; |
| 636 | |
| 637 | mem = kvm_alloc_slot(s); |
| 638 | mem->start_addr = start_addr + size; |
| 639 | size_delta = mem->start_addr - old.start_addr; |
| 640 | mem->memory_size = old.memory_size - size_delta; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 641 | mem->ram = old.ram + size_delta; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 642 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 643 | |
| 644 | err = kvm_set_user_memory_region(s, mem); |
| 645 | if (err) { |
| 646 | fprintf(stderr, "%s: error registering suffix slot: %s\n", |
| 647 | __func__, strerror(-err)); |
| 648 | abort(); |
| 649 | } |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | /* in case the KVM bug workaround already "consumed" the new slot */ |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 654 | if (!size) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 655 | return; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 656 | } |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 657 | if (!add) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 658 | return; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 659 | } |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 660 | mem = kvm_alloc_slot(s); |
| 661 | mem->memory_size = size; |
| 662 | mem->start_addr = start_addr; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 663 | mem->ram = ram; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 664 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 665 | |
| 666 | err = kvm_set_user_memory_region(s, mem); |
| 667 | if (err) { |
| 668 | fprintf(stderr, "%s: error registering slot: %s\n", __func__, |
| 669 | strerror(-err)); |
| 670 | abort(); |
| 671 | } |
| 672 | } |
| 673 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 674 | static void kvm_region_add(MemoryListener *listener, |
| 675 | MemoryRegionSection *section) |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 676 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 677 | kvm_set_phys_mem(section, true); |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 678 | } |
| 679 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 680 | static void kvm_region_del(MemoryListener *listener, |
| 681 | MemoryRegionSection *section) |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 682 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 683 | kvm_set_phys_mem(section, false); |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 684 | } |
| 685 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 686 | static void kvm_log_sync(MemoryListener *listener, |
| 687 | MemoryRegionSection *section) |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 688 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 689 | int r; |
| 690 | |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 691 | r = kvm_physical_sync_dirty_bitmap(section); |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 692 | if (r < 0) { |
| 693 | abort(); |
| 694 | } |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 695 | } |
| 696 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 697 | static void kvm_log_global_start(struct MemoryListener *listener) |
| 698 | { |
| 699 | int r; |
| 700 | |
| 701 | r = kvm_set_migration_log(1); |
| 702 | assert(r >= 0); |
| 703 | } |
| 704 | |
| 705 | static void kvm_log_global_stop(struct MemoryListener *listener) |
| 706 | { |
| 707 | int r; |
| 708 | |
| 709 | r = kvm_set_migration_log(0); |
| 710 | assert(r >= 0); |
| 711 | } |
| 712 | |
| 713 | static MemoryListener kvm_memory_listener = { |
| 714 | .region_add = kvm_region_add, |
| 715 | .region_del = kvm_region_del, |
Anthony PERARD | e5896b1 | 2011-02-07 12:19:23 +0100 | [diff] [blame] | 716 | .log_start = kvm_log_start, |
| 717 | .log_stop = kvm_log_stop, |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 718 | .log_sync = kvm_log_sync, |
| 719 | .log_global_start = kvm_log_global_start, |
| 720 | .log_global_stop = kvm_log_global_stop, |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 721 | }; |
| 722 | |
Jan Kiszka | aa7f74d | 2011-04-13 01:32:56 +0200 | [diff] [blame] | 723 | static void kvm_handle_interrupt(CPUState *env, int mask) |
| 724 | { |
| 725 | env->interrupt_request |= mask; |
| 726 | |
| 727 | if (!qemu_cpu_is_self(env)) { |
| 728 | qemu_cpu_kick(env); |
| 729 | } |
| 730 | } |
| 731 | |
Jan Kiszka | cad1e28 | 2011-01-21 21:48:16 +0100 | [diff] [blame] | 732 | int kvm_init(void) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 733 | { |
Jan Kiszka | 168ccc1 | 2009-06-07 11:30:25 +0200 | [diff] [blame] | 734 | static const char upgrade_note[] = |
| 735 | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n" |
| 736 | "(see http://sourceforge.net/projects/kvm).\n"; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 737 | KVMState *s; |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 738 | const KVMCapabilityInfo *missing_cap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 739 | int ret; |
| 740 | int i; |
| 741 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 742 | s = g_malloc0(sizeof(KVMState)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 743 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 744 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 745 | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 746 | #endif |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 747 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 748 | s->slots[i].slot = i; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 749 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 750 | s->vmfd = -1; |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 751 | s->fd = qemu_open("/dev/kvm", O_RDWR); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 752 | if (s->fd == -1) { |
| 753 | fprintf(stderr, "Could not access KVM kernel module: %m\n"); |
| 754 | ret = -errno; |
| 755 | goto err; |
| 756 | } |
| 757 | |
| 758 | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0); |
| 759 | if (ret < KVM_API_VERSION) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 760 | if (ret > 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 761 | ret = -EINVAL; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 762 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 763 | fprintf(stderr, "kvm version too old\n"); |
| 764 | goto err; |
| 765 | } |
| 766 | |
| 767 | if (ret > KVM_API_VERSION) { |
| 768 | ret = -EINVAL; |
| 769 | fprintf(stderr, "kvm version not supported\n"); |
| 770 | goto err; |
| 771 | } |
| 772 | |
| 773 | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0); |
Alexander Graf | 0104dca | 2010-04-01 18:42:37 +0200 | [diff] [blame] | 774 | if (s->vmfd < 0) { |
| 775 | #ifdef TARGET_S390X |
| 776 | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to " |
| 777 | "your host kernel command line\n"); |
| 778 | #endif |
Xu He Jie | db9eae1 | 2011-10-27 10:15:13 +0800 | [diff] [blame] | 779 | ret = s->vmfd; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 780 | goto err; |
Alexander Graf | 0104dca | 2010-04-01 18:42:37 +0200 | [diff] [blame] | 781 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 782 | |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 783 | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
| 784 | if (!missing_cap) { |
| 785 | missing_cap = |
| 786 | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
| 787 | } |
| 788 | if (missing_cap) { |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 789 | ret = -EINVAL; |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 790 | fprintf(stderr, "kvm does not support %s\n%s", |
| 791 | missing_cap->name, upgrade_note); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 792 | goto err; |
| 793 | } |
| 794 | |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 795 | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 796 | |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 797 | s->broken_set_mem_region = 1; |
Lai Jiangshan | 14a0951 | 2010-12-10 15:52:36 +0800 | [diff] [blame] | 798 | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 799 | if (ret > 0) { |
| 800 | s->broken_set_mem_region = 0; |
| 801 | } |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 802 | |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 803 | #ifdef KVM_CAP_VCPU_EVENTS |
| 804 | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
| 805 | #endif |
| 806 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 807 | s->robust_singlestep = |
| 808 | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 809 | |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 810 | #ifdef KVM_CAP_DEBUGREGS |
| 811 | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
| 812 | #endif |
| 813 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 814 | #ifdef KVM_CAP_XSAVE |
| 815 | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
| 816 | #endif |
| 817 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 818 | #ifdef KVM_CAP_XCRS |
| 819 | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
| 820 | #endif |
| 821 | |
Jan Kiszka | cad1e28 | 2011-01-21 21:48:16 +0100 | [diff] [blame] | 822 | ret = kvm_arch_init(s); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 823 | if (ret < 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 824 | goto err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 825 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 826 | |
| 827 | kvm_state = s; |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 828 | memory_listener_register(&kvm_memory_listener); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 829 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 830 | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
| 831 | |
Jan Kiszka | aa7f74d | 2011-04-13 01:32:56 +0200 | [diff] [blame] | 832 | cpu_interrupt_handler = kvm_handle_interrupt; |
| 833 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 834 | return 0; |
| 835 | |
| 836 | err: |
| 837 | if (s) { |
Xu He Jie | db9eae1 | 2011-10-27 10:15:13 +0800 | [diff] [blame] | 838 | if (s->vmfd >= 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 839 | close(s->vmfd); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 840 | } |
| 841 | if (s->fd != -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 842 | close(s->fd); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 843 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 844 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 845 | g_free(s); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 846 | |
| 847 | return ret; |
| 848 | } |
| 849 | |
Jan Kiszka | b30e93e | 2011-02-01 22:16:01 +0100 | [diff] [blame] | 850 | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
| 851 | uint32_t count) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 852 | { |
| 853 | int i; |
| 854 | uint8_t *ptr = data; |
| 855 | |
| 856 | for (i = 0; i < count; i++) { |
| 857 | if (direction == KVM_EXIT_IO_IN) { |
| 858 | switch (size) { |
| 859 | case 1: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 860 | stb_p(ptr, cpu_inb(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 861 | break; |
| 862 | case 2: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 863 | stw_p(ptr, cpu_inw(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 864 | break; |
| 865 | case 4: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 866 | stl_p(ptr, cpu_inl(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 867 | break; |
| 868 | } |
| 869 | } else { |
| 870 | switch (size) { |
| 871 | case 1: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 872 | cpu_outb(port, ldub_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 873 | break; |
| 874 | case 2: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 875 | cpu_outw(port, lduw_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 876 | break; |
| 877 | case 4: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 878 | cpu_outl(port, ldl_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 879 | break; |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | ptr += size; |
| 884 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 885 | } |
| 886 | |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 887 | static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run) |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 888 | { |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 889 | fprintf(stderr, "KVM internal error."); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 890 | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) { |
| 891 | int i; |
| 892 | |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 893 | fprintf(stderr, " Suberror: %d\n", run->internal.suberror); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 894 | for (i = 0; i < run->internal.ndata; ++i) { |
| 895 | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
| 896 | i, (uint64_t)run->internal.data[i]); |
| 897 | } |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 898 | } else { |
| 899 | fprintf(stderr, "\n"); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 900 | } |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 901 | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) { |
| 902 | fprintf(stderr, "emulation failure\n"); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 903 | if (!kvm_arch_stop_on_emulation_error(env)) { |
Jan Kiszka | f5c848e | 2011-01-21 21:48:08 +0100 | [diff] [blame] | 904 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 905 | return EXCP_INTERRUPT; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 906 | } |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 907 | } |
| 908 | /* FIXME: Should trigger a qmp message to let management know |
| 909 | * something went wrong. |
| 910 | */ |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 911 | return -1; |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 912 | } |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 913 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 914 | void kvm_flush_coalesced_mmio_buffer(void) |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 915 | { |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 916 | KVMState *s = kvm_state; |
Avi Kivity | 1cae88b | 2011-10-18 19:43:12 +0200 | [diff] [blame] | 917 | |
| 918 | if (s->coalesced_flush_in_progress) { |
| 919 | return; |
| 920 | } |
| 921 | |
| 922 | s->coalesced_flush_in_progress = true; |
| 923 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 924 | if (s->coalesced_mmio_ring) { |
| 925 | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 926 | while (ring->first != ring->last) { |
| 927 | struct kvm_coalesced_mmio *ent; |
| 928 | |
| 929 | ent = &ring->coalesced_mmio[ring->first]; |
| 930 | |
| 931 | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
Marcelo Tosatti | 8519947 | 2010-02-22 13:57:54 -0300 | [diff] [blame] | 932 | smp_wmb(); |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 933 | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX; |
| 934 | } |
| 935 | } |
Avi Kivity | 1cae88b | 2011-10-18 19:43:12 +0200 | [diff] [blame] | 936 | |
| 937 | s->coalesced_flush_in_progress = false; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 938 | } |
| 939 | |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 940 | static void do_kvm_cpu_synchronize_state(void *_env) |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 941 | { |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 942 | CPUState *env = _env; |
| 943 | |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 944 | if (!env->kvm_vcpu_dirty) { |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 945 | kvm_arch_get_registers(env); |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 946 | env->kvm_vcpu_dirty = 1; |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 947 | } |
| 948 | } |
| 949 | |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 950 | void kvm_cpu_synchronize_state(CPUState *env) |
| 951 | { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 952 | if (!env->kvm_vcpu_dirty) { |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 953 | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 954 | } |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 955 | } |
| 956 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 957 | void kvm_cpu_synchronize_post_reset(CPUState *env) |
| 958 | { |
| 959 | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
| 960 | env->kvm_vcpu_dirty = 0; |
| 961 | } |
| 962 | |
| 963 | void kvm_cpu_synchronize_post_init(CPUState *env) |
| 964 | { |
| 965 | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
| 966 | env->kvm_vcpu_dirty = 0; |
| 967 | } |
| 968 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 969 | int kvm_cpu_exec(CPUState *env) |
| 970 | { |
| 971 | struct kvm_run *run = env->kvm_run; |
Jan Kiszka | 7cbb533 | 2011-03-15 12:26:25 +0100 | [diff] [blame] | 972 | int ret, run_ret; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 973 | |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 974 | DPRINTF("kvm_cpu_exec()\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 975 | |
Jan Kiszka | 9903686 | 2011-03-02 08:56:13 +0100 | [diff] [blame] | 976 | if (kvm_arch_process_async_events(env)) { |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 977 | env->exit_request = 0; |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 978 | return EXCP_HLT; |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 979 | } |
| 980 | |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 981 | cpu_single_env = env; |
| 982 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 983 | do { |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 984 | if (env->kvm_vcpu_dirty) { |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 985 | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 986 | env->kvm_vcpu_dirty = 0; |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 987 | } |
| 988 | |
Jan Kiszka | 8c14c17 | 2009-05-30 10:01:45 +0200 | [diff] [blame] | 989 | kvm_arch_pre_run(env, run); |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 990 | if (env->exit_request) { |
| 991 | DPRINTF("interrupt exit requested\n"); |
| 992 | /* |
| 993 | * KVM requires us to reenter the kernel after IO exits to complete |
| 994 | * instruction emulation. This self-signal will ensure that we |
| 995 | * leave ASAP again. |
| 996 | */ |
| 997 | qemu_cpu_kick_self(); |
| 998 | } |
Marcelo Tosatti | 273faf1 | 2010-05-04 09:45:19 -0300 | [diff] [blame] | 999 | cpu_single_env = NULL; |
Glauber Costa | d549db5 | 2009-10-07 16:38:03 -0300 | [diff] [blame] | 1000 | qemu_mutex_unlock_iothread(); |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1001 | |
Jan Kiszka | 7cbb533 | 2011-03-15 12:26:25 +0100 | [diff] [blame] | 1002 | run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0); |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1003 | |
Glauber Costa | d549db5 | 2009-10-07 16:38:03 -0300 | [diff] [blame] | 1004 | qemu_mutex_lock_iothread(); |
Marcelo Tosatti | 273faf1 | 2010-05-04 09:45:19 -0300 | [diff] [blame] | 1005 | cpu_single_env = env; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1006 | kvm_arch_post_run(env, run); |
| 1007 | |
Jan Kiszka | b0c883b | 2011-01-21 21:48:19 +0100 | [diff] [blame] | 1008 | kvm_flush_coalesced_mmio_buffer(); |
| 1009 | |
Jan Kiszka | 7cbb533 | 2011-03-15 12:26:25 +0100 | [diff] [blame] | 1010 | if (run_ret < 0) { |
Jan Kiszka | dc77d34 | 2011-03-15 12:26:26 +0100 | [diff] [blame] | 1011 | if (run_ret == -EINTR || run_ret == -EAGAIN) { |
| 1012 | DPRINTF("io window exit\n"); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1013 | ret = EXCP_INTERRUPT; |
Jan Kiszka | dc77d34 | 2011-03-15 12:26:26 +0100 | [diff] [blame] | 1014 | break; |
| 1015 | } |
Michael Ellerman | 7b011fb | 2011-12-16 11:20:20 +1100 | [diff] [blame] | 1016 | fprintf(stderr, "error: kvm run failed %s\n", |
| 1017 | strerror(-run_ret)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1018 | abort(); |
| 1019 | } |
| 1020 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1021 | switch (run->exit_reason) { |
| 1022 | case KVM_EXIT_IO: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1023 | DPRINTF("handle_io\n"); |
Jan Kiszka | b30e93e | 2011-02-01 22:16:01 +0100 | [diff] [blame] | 1024 | kvm_handle_io(run->io.port, |
| 1025 | (uint8_t *)run + run->io.data_offset, |
| 1026 | run->io.direction, |
| 1027 | run->io.size, |
| 1028 | run->io.count); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1029 | ret = 0; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1030 | break; |
| 1031 | case KVM_EXIT_MMIO: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1032 | DPRINTF("handle_mmio\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1033 | cpu_physical_memory_rw(run->mmio.phys_addr, |
| 1034 | run->mmio.data, |
| 1035 | run->mmio.len, |
| 1036 | run->mmio.is_write); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1037 | ret = 0; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1038 | break; |
| 1039 | case KVM_EXIT_IRQ_WINDOW_OPEN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1040 | DPRINTF("irq_window_open\n"); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1041 | ret = EXCP_INTERRUPT; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1042 | break; |
| 1043 | case KVM_EXIT_SHUTDOWN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1044 | DPRINTF("shutdown\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1045 | qemu_system_reset_request(); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1046 | ret = EXCP_INTERRUPT; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1047 | break; |
| 1048 | case KVM_EXIT_UNKNOWN: |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 1049 | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
| 1050 | (uint64_t)run->hw.hardware_exit_reason); |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1051 | ret = -1; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1052 | break; |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1053 | case KVM_EXIT_INTERNAL_ERROR: |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1054 | ret = kvm_handle_internal_error(env, run); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1055 | break; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1056 | default: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1057 | DPRINTF("kvm_arch_handle_exit\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1058 | ret = kvm_arch_handle_exit(env, run); |
| 1059 | break; |
| 1060 | } |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1061 | } while (ret == 0); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1062 | |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1063 | if (ret < 0) { |
Jan Kiszka | f5c848e | 2011-01-21 21:48:08 +0100 | [diff] [blame] | 1064 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
Luiz Capitulino | 0461d5a | 2011-09-30 14:45:27 -0300 | [diff] [blame] | 1065 | vm_stop(RUN_STATE_INTERNAL_ERROR); |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1066 | } |
aliguori | becfc39 | 2008-11-10 15:55:14 +0000 | [diff] [blame] | 1067 | |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 1068 | env->exit_request = 0; |
| 1069 | cpu_single_env = NULL; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1070 | return ret; |
| 1071 | } |
| 1072 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1073 | int kvm_ioctl(KVMState *s, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1074 | { |
| 1075 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1076 | void *arg; |
| 1077 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1078 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1079 | va_start(ap, type); |
| 1080 | arg = va_arg(ap, void *); |
| 1081 | va_end(ap); |
| 1082 | |
| 1083 | ret = ioctl(s->fd, type, arg); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1084 | if (ret == -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1085 | ret = -errno; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1086 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1087 | return ret; |
| 1088 | } |
| 1089 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1090 | int kvm_vm_ioctl(KVMState *s, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1091 | { |
| 1092 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1093 | void *arg; |
| 1094 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1095 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1096 | va_start(ap, type); |
| 1097 | arg = va_arg(ap, void *); |
| 1098 | va_end(ap); |
| 1099 | |
| 1100 | ret = ioctl(s->vmfd, type, arg); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1101 | if (ret == -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1102 | ret = -errno; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1103 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1104 | return ret; |
| 1105 | } |
| 1106 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1107 | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1108 | { |
| 1109 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1110 | void *arg; |
| 1111 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1112 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1113 | va_start(ap, type); |
| 1114 | arg = va_arg(ap, void *); |
| 1115 | va_end(ap); |
| 1116 | |
| 1117 | ret = ioctl(env->kvm_fd, type, arg); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1118 | if (ret == -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1119 | ret = -errno; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1120 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1121 | return ret; |
| 1122 | } |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1123 | |
| 1124 | int kvm_has_sync_mmu(void) |
| 1125 | { |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 1126 | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU); |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1127 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1128 | |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 1129 | int kvm_has_vcpu_events(void) |
| 1130 | { |
| 1131 | return kvm_state->vcpu_events; |
| 1132 | } |
| 1133 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1134 | int kvm_has_robust_singlestep(void) |
| 1135 | { |
| 1136 | return kvm_state->robust_singlestep; |
| 1137 | } |
| 1138 | |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 1139 | int kvm_has_debugregs(void) |
| 1140 | { |
| 1141 | return kvm_state->debugregs; |
| 1142 | } |
| 1143 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 1144 | int kvm_has_xsave(void) |
| 1145 | { |
| 1146 | return kvm_state->xsave; |
| 1147 | } |
| 1148 | |
| 1149 | int kvm_has_xcrs(void) |
| 1150 | { |
| 1151 | return kvm_state->xcrs; |
| 1152 | } |
| 1153 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 1154 | int kvm_has_many_ioeventfds(void) |
| 1155 | { |
| 1156 | if (!kvm_enabled()) { |
| 1157 | return 0; |
| 1158 | } |
| 1159 | return kvm_state->many_ioeventfds; |
| 1160 | } |
| 1161 | |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1162 | void kvm_setup_guest_memory(void *start, size_t size) |
| 1163 | { |
| 1164 | if (!kvm_has_sync_mmu()) { |
Andreas Färber | e78815a | 2010-09-25 11:26:05 +0000 | [diff] [blame] | 1165 | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK); |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1166 | |
| 1167 | if (ret) { |
Andreas Färber | e78815a | 2010-09-25 11:26:05 +0000 | [diff] [blame] | 1168 | perror("qemu_madvise"); |
| 1169 | fprintf(stderr, |
| 1170 | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n"); |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1171 | exit(1); |
| 1172 | } |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1173 | } |
| 1174 | } |
| 1175 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1176 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
| 1177 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env, |
| 1178 | target_ulong pc) |
| 1179 | { |
| 1180 | struct kvm_sw_breakpoint *bp; |
| 1181 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1182 | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1183 | if (bp->pc == pc) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1184 | return bp; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1185 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1186 | } |
| 1187 | return NULL; |
| 1188 | } |
| 1189 | |
| 1190 | int kvm_sw_breakpoints_active(CPUState *env) |
| 1191 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1192 | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1193 | } |
| 1194 | |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1195 | struct kvm_set_guest_debug_data { |
| 1196 | struct kvm_guest_debug dbg; |
| 1197 | CPUState *env; |
| 1198 | int err; |
| 1199 | }; |
| 1200 | |
| 1201 | static void kvm_invoke_set_guest_debug(void *data) |
| 1202 | { |
| 1203 | struct kvm_set_guest_debug_data *dbg_data = data; |
Jan Kiszka | b380772 | 2009-09-17 20:05:58 +0200 | [diff] [blame] | 1204 | CPUState *env = dbg_data->env; |
| 1205 | |
Jan Kiszka | b380772 | 2009-09-17 20:05:58 +0200 | [diff] [blame] | 1206 | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1207 | } |
| 1208 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1209 | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
| 1210 | { |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1211 | struct kvm_set_guest_debug_data data; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1212 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1213 | data.dbg.control = reinject_trap; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1214 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1215 | if (env->singlestep_enabled) { |
| 1216 | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
| 1217 | } |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1218 | kvm_arch_update_guest_debug(env, &data.dbg); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1219 | data.env = env; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1220 | |
Jan Kiszka | be41cbe | 2010-05-20 00:28:45 +0200 | [diff] [blame] | 1221 | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1222 | return data.err; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1223 | } |
| 1224 | |
| 1225 | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr, |
| 1226 | target_ulong len, int type) |
| 1227 | { |
| 1228 | struct kvm_sw_breakpoint *bp; |
| 1229 | CPUState *env; |
| 1230 | int err; |
| 1231 | |
| 1232 | if (type == GDB_BREAKPOINT_SW) { |
| 1233 | bp = kvm_find_sw_breakpoint(current_env, addr); |
| 1234 | if (bp) { |
| 1235 | bp->use_count++; |
| 1236 | return 0; |
| 1237 | } |
| 1238 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1239 | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1240 | if (!bp) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1241 | return -ENOMEM; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1242 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1243 | |
| 1244 | bp->pc = addr; |
| 1245 | bp->use_count = 1; |
| 1246 | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
| 1247 | if (err) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1248 | g_free(bp); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1249 | return err; |
| 1250 | } |
| 1251 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1252 | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1253 | bp, entry); |
| 1254 | } else { |
| 1255 | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1256 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1257 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1258 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1259 | } |
| 1260 | |
| 1261 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1262 | err = kvm_update_guest_debug(env, 0); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1263 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1264 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1265 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1266 | } |
| 1267 | return 0; |
| 1268 | } |
| 1269 | |
| 1270 | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr, |
| 1271 | target_ulong len, int type) |
| 1272 | { |
| 1273 | struct kvm_sw_breakpoint *bp; |
| 1274 | CPUState *env; |
| 1275 | int err; |
| 1276 | |
| 1277 | if (type == GDB_BREAKPOINT_SW) { |
| 1278 | bp = kvm_find_sw_breakpoint(current_env, addr); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1279 | if (!bp) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1280 | return -ENOENT; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1281 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1282 | |
| 1283 | if (bp->use_count > 1) { |
| 1284 | bp->use_count--; |
| 1285 | return 0; |
| 1286 | } |
| 1287 | |
| 1288 | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1289 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1290 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1291 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1292 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1293 | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1294 | g_free(bp); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1295 | } else { |
| 1296 | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1297 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1298 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1299 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1300 | } |
| 1301 | |
| 1302 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1303 | err = kvm_update_guest_debug(env, 0); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1304 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1305 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1306 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1307 | } |
| 1308 | return 0; |
| 1309 | } |
| 1310 | |
| 1311 | void kvm_remove_all_breakpoints(CPUState *current_env) |
| 1312 | { |
| 1313 | struct kvm_sw_breakpoint *bp, *next; |
| 1314 | KVMState *s = current_env->kvm_state; |
| 1315 | CPUState *env; |
| 1316 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1317 | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1318 | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
| 1319 | /* Try harder to find a CPU that currently sees the breakpoint. */ |
| 1320 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1321 | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1322 | break; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1323 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | kvm_arch_remove_all_hw_breakpoints(); |
| 1328 | |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1329 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1330 | kvm_update_guest_debug(env, 0); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1331 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1332 | } |
| 1333 | |
| 1334 | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
| 1335 | |
| 1336 | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
| 1337 | { |
| 1338 | return -EINVAL; |
| 1339 | } |
| 1340 | |
| 1341 | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr, |
| 1342 | target_ulong len, int type) |
| 1343 | { |
| 1344 | return -EINVAL; |
| 1345 | } |
| 1346 | |
| 1347 | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr, |
| 1348 | target_ulong len, int type) |
| 1349 | { |
| 1350 | return -EINVAL; |
| 1351 | } |
| 1352 | |
| 1353 | void kvm_remove_all_breakpoints(CPUState *current_env) |
| 1354 | { |
| 1355 | } |
| 1356 | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1357 | |
| 1358 | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) |
| 1359 | { |
| 1360 | struct kvm_signal_mask *sigmask; |
| 1361 | int r; |
| 1362 | |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1363 | if (!sigset) { |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1364 | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1365 | } |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1366 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1367 | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1368 | |
| 1369 | sigmask->len = 8; |
| 1370 | memcpy(sigmask->sigset, sigset, sizeof(*sigset)); |
| 1371 | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1372 | g_free(sigmask); |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1373 | |
| 1374 | return r; |
| 1375 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1376 | |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1377 | int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign) |
| 1378 | { |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1379 | int ret; |
| 1380 | struct kvm_ioeventfd iofd; |
| 1381 | |
| 1382 | iofd.datamatch = val; |
| 1383 | iofd.addr = addr; |
| 1384 | iofd.len = 4; |
| 1385 | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
| 1386 | iofd.fd = fd; |
| 1387 | |
| 1388 | if (!kvm_enabled()) { |
| 1389 | return -ENOSYS; |
| 1390 | } |
| 1391 | |
| 1392 | if (!assign) { |
| 1393 | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
| 1394 | } |
| 1395 | |
| 1396 | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
| 1397 | |
| 1398 | if (ret < 0) { |
| 1399 | return -errno; |
| 1400 | } |
| 1401 | |
| 1402 | return 0; |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1403 | } |
| 1404 | |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1405 | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
| 1406 | { |
| 1407 | struct kvm_ioeventfd kick = { |
| 1408 | .datamatch = val, |
| 1409 | .addr = addr, |
| 1410 | .len = 2, |
| 1411 | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
| 1412 | .fd = fd, |
| 1413 | }; |
| 1414 | int r; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1415 | if (!kvm_enabled()) { |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1416 | return -ENOSYS; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1417 | } |
| 1418 | if (!assign) { |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1419 | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1420 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1421 | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1422 | if (r < 0) { |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1423 | return r; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1424 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1425 | return 0; |
Paolo Bonzini | 98c8573 | 2010-04-19 18:59:30 +0000 | [diff] [blame] | 1426 | } |
Jan Kiszka | a1b87fe | 2011-02-01 22:15:51 +0100 | [diff] [blame] | 1427 | |
| 1428 | int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr) |
| 1429 | { |
| 1430 | return kvm_arch_on_sigbus_vcpu(env, code, addr); |
| 1431 | } |
| 1432 | |
| 1433 | int kvm_on_sigbus(int code, void *addr) |
| 1434 | { |
| 1435 | return kvm_arch_on_sigbus(code, addr); |
| 1436 | } |