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" |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 30 | |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 31 | /* KVM uses PAGE_SIZE in it's definition of COALESCED_MMIO_MAX */ |
| 32 | #define PAGE_SIZE TARGET_PAGE_SIZE |
| 33 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 34 | //#define DEBUG_KVM |
| 35 | |
| 36 | #ifdef DEBUG_KVM |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 37 | #define DPRINTF(fmt, ...) \ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 38 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
| 39 | #else |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 40 | #define DPRINTF(fmt, ...) \ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 41 | do { } while (0) |
| 42 | #endif |
| 43 | |
aliguori | 34fc643 | 2008-11-19 17:41:58 +0000 | [diff] [blame] | 44 | typedef struct KVMSlot |
| 45 | { |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 46 | target_phys_addr_t start_addr; |
| 47 | ram_addr_t memory_size; |
| 48 | ram_addr_t phys_offset; |
aliguori | 34fc643 | 2008-11-19 17:41:58 +0000 | [diff] [blame] | 49 | int slot; |
| 50 | int flags; |
| 51 | } KVMSlot; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 52 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 53 | typedef struct kvm_dirty_log KVMDirtyLog; |
| 54 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 55 | struct KVMState |
| 56 | { |
| 57 | KVMSlot slots[32]; |
| 58 | int fd; |
| 59 | int vmfd; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 60 | int coalesced_mmio; |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 61 | #ifdef KVM_CAP_COALESCED_MMIO |
| 62 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
| 63 | #endif |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 64 | int broken_set_mem_region; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 65 | int migration_log; |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 66 | int vcpu_events; |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 67 | int robust_singlestep; |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 68 | int debugregs; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 69 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
| 70 | struct kvm_sw_breakpoint_head kvm_sw_breakpoints; |
| 71 | #endif |
Glauber Costa | 6f725c1 | 2009-07-21 12:26:58 -0300 | [diff] [blame] | 72 | int irqchip_in_kernel; |
| 73 | int pit_in_kernel; |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 74 | int xsave, xcrs; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 75 | }; |
| 76 | |
| 77 | static KVMState *kvm_state; |
| 78 | |
| 79 | static KVMSlot *kvm_alloc_slot(KVMState *s) |
| 80 | { |
| 81 | int i; |
| 82 | |
| 83 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
aliguori | 62d60e8 | 2008-11-18 15:41:18 +0000 | [diff] [blame] | 84 | /* KVM private memory slots */ |
| 85 | if (i >= 8 && i < 12) |
| 86 | continue; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 87 | if (s->slots[i].memory_size == 0) |
| 88 | return &s->slots[i]; |
| 89 | } |
| 90 | |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 91 | fprintf(stderr, "%s: no free slot available\n", __func__); |
| 92 | abort(); |
| 93 | } |
| 94 | |
| 95 | static KVMSlot *kvm_lookup_matching_slot(KVMState *s, |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 96 | target_phys_addr_t start_addr, |
| 97 | target_phys_addr_t end_addr) |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 98 | { |
| 99 | int i; |
| 100 | |
| 101 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 102 | KVMSlot *mem = &s->slots[i]; |
| 103 | |
| 104 | if (start_addr == mem->start_addr && |
| 105 | end_addr == mem->start_addr + mem->memory_size) { |
| 106 | return mem; |
| 107 | } |
| 108 | } |
| 109 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 110 | return NULL; |
| 111 | } |
| 112 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 113 | /* |
| 114 | * Find overlapping slot with lowest start address |
| 115 | */ |
| 116 | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s, |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 117 | target_phys_addr_t start_addr, |
| 118 | target_phys_addr_t end_addr) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 119 | { |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 120 | KVMSlot *found = NULL; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 121 | int i; |
| 122 | |
| 123 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 124 | KVMSlot *mem = &s->slots[i]; |
| 125 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 126 | if (mem->memory_size == 0 || |
| 127 | (found && found->start_addr < mem->start_addr)) { |
| 128 | continue; |
| 129 | } |
| 130 | |
| 131 | if (end_addr > mem->start_addr && |
| 132 | start_addr < mem->start_addr + mem->memory_size) { |
| 133 | found = mem; |
| 134 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 135 | } |
| 136 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 137 | return found; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 138 | } |
| 139 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 140 | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
| 141 | { |
| 142 | struct kvm_userspace_memory_region mem; |
| 143 | |
| 144 | mem.slot = slot->slot; |
| 145 | mem.guest_phys_addr = slot->start_addr; |
| 146 | mem.memory_size = slot->memory_size; |
pbrook | 5579c7f | 2009-04-11 14:47:08 +0000 | [diff] [blame] | 147 | mem.userspace_addr = (unsigned long)qemu_get_ram_ptr(slot->phys_offset); |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 148 | mem.flags = slot->flags; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 149 | if (s->migration_log) { |
| 150 | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
| 151 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 152 | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
| 153 | } |
| 154 | |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 155 | static void kvm_reset_vcpu(void *opaque) |
| 156 | { |
| 157 | CPUState *env = opaque; |
| 158 | |
Jan Kiszka | caa5af0 | 2009-11-06 19:39:24 +0100 | [diff] [blame] | 159 | kvm_arch_reset_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 160 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 161 | |
Glauber Costa | 6f725c1 | 2009-07-21 12:26:58 -0300 | [diff] [blame] | 162 | int kvm_irqchip_in_kernel(void) |
| 163 | { |
| 164 | return kvm_state->irqchip_in_kernel; |
| 165 | } |
| 166 | |
| 167 | int kvm_pit_in_kernel(void) |
| 168 | { |
| 169 | return kvm_state->pit_in_kernel; |
| 170 | } |
| 171 | |
| 172 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 173 | int kvm_init_vcpu(CPUState *env) |
| 174 | { |
| 175 | KVMState *s = kvm_state; |
| 176 | long mmap_size; |
| 177 | int ret; |
| 178 | |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 179 | DPRINTF("kvm_init_vcpu\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 180 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 181 | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 182 | if (ret < 0) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 183 | DPRINTF("kvm_create_vcpu failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 184 | goto err; |
| 185 | } |
| 186 | |
| 187 | env->kvm_fd = ret; |
| 188 | env->kvm_state = s; |
| 189 | |
| 190 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); |
| 191 | if (mmap_size < 0) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 192 | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 193 | goto err; |
| 194 | } |
| 195 | |
| 196 | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| 197 | env->kvm_fd, 0); |
| 198 | if (env->kvm_run == MAP_FAILED) { |
| 199 | ret = -errno; |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 200 | DPRINTF("mmap'ing vcpu state failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 201 | goto err; |
| 202 | } |
| 203 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 204 | #ifdef KVM_CAP_COALESCED_MMIO |
| 205 | if (s->coalesced_mmio && !s->coalesced_mmio_ring) |
| 206 | s->coalesced_mmio_ring = (void *) env->kvm_run + |
| 207 | s->coalesced_mmio * PAGE_SIZE; |
| 208 | #endif |
| 209 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 210 | ret = kvm_arch_init_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 211 | if (ret == 0) { |
Jan Kiszka | a08d436 | 2009-06-27 09:25:07 +0200 | [diff] [blame] | 212 | qemu_register_reset(kvm_reset_vcpu, env); |
Jan Kiszka | caa5af0 | 2009-11-06 19:39:24 +0100 | [diff] [blame] | 213 | kvm_arch_reset_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 214 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 215 | err: |
| 216 | return ret; |
| 217 | } |
| 218 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 219 | /* |
| 220 | * dirty pages logging control |
| 221 | */ |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 222 | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
| 223 | ram_addr_t size, int flags, int mask) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 224 | { |
| 225 | KVMState *s = kvm_state; |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 226 | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 227 | int old_flags; |
| 228 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 229 | if (mem == NULL) { |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 230 | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
| 231 | TARGET_FMT_plx "\n", __func__, phys_addr, |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 232 | (target_phys_addr_t)(phys_addr + size - 1)); |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 233 | return -EINVAL; |
| 234 | } |
| 235 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 236 | old_flags = mem->flags; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 237 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 238 | flags = (mem->flags & ~mask) | flags; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 239 | mem->flags = flags; |
| 240 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 241 | /* If nothing changed effectively, no need to issue ioctl */ |
| 242 | if (s->migration_log) { |
| 243 | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
| 244 | } |
| 245 | if (flags == old_flags) { |
| 246 | return 0; |
| 247 | } |
| 248 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 249 | return kvm_set_user_memory_region(s, mem); |
| 250 | } |
| 251 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 252 | int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 253 | { |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 254 | return kvm_dirty_pages_log_change(phys_addr, size, |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 255 | KVM_MEM_LOG_DIRTY_PAGES, |
| 256 | KVM_MEM_LOG_DIRTY_PAGES); |
| 257 | } |
| 258 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 259 | int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 260 | { |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 261 | return kvm_dirty_pages_log_change(phys_addr, size, |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 262 | 0, |
| 263 | KVM_MEM_LOG_DIRTY_PAGES); |
| 264 | } |
| 265 | |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 266 | static int kvm_set_migration_log(int enable) |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 267 | { |
| 268 | KVMState *s = kvm_state; |
| 269 | KVMSlot *mem; |
| 270 | int i, err; |
| 271 | |
| 272 | s->migration_log = enable; |
| 273 | |
| 274 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 275 | mem = &s->slots[i]; |
| 276 | |
Alex Williamson | 70fedd7 | 2010-07-14 13:36:49 -0600 | [diff] [blame^] | 277 | if (!mem->memory_size) { |
| 278 | continue; |
| 279 | } |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 280 | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) { |
| 281 | continue; |
| 282 | } |
| 283 | err = kvm_set_user_memory_region(s, mem); |
| 284 | if (err) { |
| 285 | return err; |
| 286 | } |
| 287 | } |
| 288 | return 0; |
| 289 | } |
| 290 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 291 | /* get kvm's dirty pages bitmap and update qemu's */ |
| 292 | static int kvm_get_dirty_pages_log_range(unsigned long start_addr, |
| 293 | unsigned long *bitmap, |
| 294 | unsigned long offset, |
| 295 | unsigned long mem_size) |
Alexander Graf | 96c1606 | 2009-07-27 12:49:56 +0200 | [diff] [blame] | 296 | { |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 297 | unsigned int i, j; |
| 298 | unsigned long page_number, addr, addr1, c; |
| 299 | ram_addr_t ram_addr; |
| 300 | unsigned int len = ((mem_size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / |
| 301 | HOST_LONG_BITS; |
| 302 | |
| 303 | /* |
| 304 | * bitmap-traveling is faster than memory-traveling (for addr...) |
| 305 | * especially when most of the memory is not dirty. |
| 306 | */ |
| 307 | for (i = 0; i < len; i++) { |
| 308 | if (bitmap[i] != 0) { |
| 309 | c = leul_to_cpu(bitmap[i]); |
| 310 | do { |
| 311 | j = ffsl(c) - 1; |
| 312 | c &= ~(1ul << j); |
| 313 | page_number = i * HOST_LONG_BITS + j; |
| 314 | addr1 = page_number * TARGET_PAGE_SIZE; |
| 315 | addr = offset + addr1; |
| 316 | ram_addr = cpu_get_physical_page_desc(addr); |
| 317 | cpu_physical_memory_set_dirty(ram_addr); |
| 318 | } while (c != 0); |
| 319 | } |
| 320 | } |
| 321 | return 0; |
Alexander Graf | 96c1606 | 2009-07-27 12:49:56 +0200 | [diff] [blame] | 322 | } |
| 323 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 324 | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
| 325 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 326 | /** |
| 327 | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space |
| 328 | * This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty(). |
| 329 | * This means all bits are set to dirty. |
| 330 | * |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 331 | * @start_add: start of logged region. |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 332 | * @end_addr: end of logged region. |
| 333 | */ |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 334 | static int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, |
| 335 | target_phys_addr_t end_addr) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 336 | { |
| 337 | KVMState *s = kvm_state; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 338 | unsigned long size, allocated_size = 0; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 339 | KVMDirtyLog d; |
| 340 | KVMSlot *mem; |
| 341 | int ret = 0; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 342 | |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 343 | d.dirty_bitmap = NULL; |
| 344 | while (start_addr < end_addr) { |
| 345 | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
| 346 | if (mem == NULL) { |
| 347 | break; |
| 348 | } |
| 349 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 350 | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), HOST_LONG_BITS) / 8; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 351 | if (!d.dirty_bitmap) { |
| 352 | d.dirty_bitmap = qemu_malloc(size); |
| 353 | } else if (size > allocated_size) { |
| 354 | d.dirty_bitmap = qemu_realloc(d.dirty_bitmap, size); |
| 355 | } |
| 356 | allocated_size = size; |
| 357 | memset(d.dirty_bitmap, 0, allocated_size); |
| 358 | |
| 359 | d.slot = mem->slot; |
| 360 | |
Anthony Liguori | 6e489f3 | 2009-07-27 15:23:59 -0500 | [diff] [blame] | 361 | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 362 | DPRINTF("ioctl failed %d\n", errno); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 363 | ret = -1; |
| 364 | break; |
| 365 | } |
| 366 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 367 | kvm_get_dirty_pages_log_range(mem->start_addr, d.dirty_bitmap, |
| 368 | mem->start_addr, mem->memory_size); |
| 369 | start_addr = mem->start_addr + mem->memory_size; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 370 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 371 | qemu_free(d.dirty_bitmap); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 372 | |
| 373 | return ret; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 374 | } |
| 375 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 376 | 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] | 377 | { |
| 378 | int ret = -ENOSYS; |
| 379 | #ifdef KVM_CAP_COALESCED_MMIO |
| 380 | KVMState *s = kvm_state; |
| 381 | |
| 382 | if (s->coalesced_mmio) { |
| 383 | struct kvm_coalesced_mmio_zone zone; |
| 384 | |
| 385 | zone.addr = start; |
| 386 | zone.size = size; |
| 387 | |
| 388 | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
| 389 | } |
| 390 | #endif |
| 391 | |
| 392 | return ret; |
| 393 | } |
| 394 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 395 | 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] | 396 | { |
| 397 | int ret = -ENOSYS; |
| 398 | #ifdef KVM_CAP_COALESCED_MMIO |
| 399 | KVMState *s = kvm_state; |
| 400 | |
| 401 | if (s->coalesced_mmio) { |
| 402 | struct kvm_coalesced_mmio_zone zone; |
| 403 | |
| 404 | zone.addr = start; |
| 405 | zone.size = size; |
| 406 | |
| 407 | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
| 408 | } |
| 409 | #endif |
| 410 | |
| 411 | return ret; |
| 412 | } |
| 413 | |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 414 | int kvm_check_extension(KVMState *s, unsigned int extension) |
| 415 | { |
| 416 | int ret; |
| 417 | |
| 418 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
| 419 | if (ret < 0) { |
| 420 | ret = 0; |
| 421 | } |
| 422 | |
| 423 | return ret; |
| 424 | } |
| 425 | |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 426 | static void kvm_set_phys_mem(target_phys_addr_t start_addr, |
| 427 | ram_addr_t size, |
| 428 | ram_addr_t phys_offset) |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 429 | { |
| 430 | KVMState *s = kvm_state; |
| 431 | ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK; |
| 432 | KVMSlot *mem, old; |
| 433 | int err; |
| 434 | |
| 435 | if (start_addr & ~TARGET_PAGE_MASK) { |
| 436 | if (flags >= IO_MEM_UNASSIGNED) { |
| 437 | if (!kvm_lookup_overlapping_slot(s, start_addr, |
| 438 | start_addr + size)) { |
| 439 | return; |
| 440 | } |
| 441 | fprintf(stderr, "Unaligned split of a KVM memory slot\n"); |
| 442 | } else { |
| 443 | fprintf(stderr, "Only page-aligned memory slots supported\n"); |
| 444 | } |
| 445 | abort(); |
| 446 | } |
| 447 | |
| 448 | /* KVM does not support read-only slots */ |
| 449 | phys_offset &= ~IO_MEM_ROM; |
| 450 | |
| 451 | while (1) { |
| 452 | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
| 453 | if (!mem) { |
| 454 | break; |
| 455 | } |
| 456 | |
| 457 | if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr && |
| 458 | (start_addr + size <= mem->start_addr + mem->memory_size) && |
| 459 | (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) { |
| 460 | /* The new slot fits into the existing one and comes with |
| 461 | * identical parameters - nothing to be done. */ |
| 462 | return; |
| 463 | } |
| 464 | |
| 465 | old = *mem; |
| 466 | |
| 467 | /* unregister the overlapping slot */ |
| 468 | mem->memory_size = 0; |
| 469 | err = kvm_set_user_memory_region(s, mem); |
| 470 | if (err) { |
| 471 | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n", |
| 472 | __func__, strerror(-err)); |
| 473 | abort(); |
| 474 | } |
| 475 | |
| 476 | /* Workaround for older KVM versions: we can't join slots, even not by |
| 477 | * unregistering the previous ones and then registering the larger |
| 478 | * slot. We have to maintain the existing fragmentation. Sigh. |
| 479 | * |
| 480 | * This workaround assumes that the new slot starts at the same |
| 481 | * address as the first existing one. If not or if some overlapping |
| 482 | * slot comes around later, we will fail (not seen in practice so far) |
| 483 | * - and actually require a recent KVM version. */ |
| 484 | if (s->broken_set_mem_region && |
| 485 | old.start_addr == start_addr && old.memory_size < size && |
| 486 | flags < IO_MEM_UNASSIGNED) { |
| 487 | mem = kvm_alloc_slot(s); |
| 488 | mem->memory_size = old.memory_size; |
| 489 | mem->start_addr = old.start_addr; |
| 490 | mem->phys_offset = old.phys_offset; |
| 491 | mem->flags = 0; |
| 492 | |
| 493 | err = kvm_set_user_memory_region(s, mem); |
| 494 | if (err) { |
| 495 | fprintf(stderr, "%s: error updating slot: %s\n", __func__, |
| 496 | strerror(-err)); |
| 497 | abort(); |
| 498 | } |
| 499 | |
| 500 | start_addr += old.memory_size; |
| 501 | phys_offset += old.memory_size; |
| 502 | size -= old.memory_size; |
| 503 | continue; |
| 504 | } |
| 505 | |
| 506 | /* register prefix slot */ |
| 507 | if (old.start_addr < start_addr) { |
| 508 | mem = kvm_alloc_slot(s); |
| 509 | mem->memory_size = start_addr - old.start_addr; |
| 510 | mem->start_addr = old.start_addr; |
| 511 | mem->phys_offset = old.phys_offset; |
| 512 | mem->flags = 0; |
| 513 | |
| 514 | err = kvm_set_user_memory_region(s, mem); |
| 515 | if (err) { |
| 516 | fprintf(stderr, "%s: error registering prefix slot: %s\n", |
| 517 | __func__, strerror(-err)); |
| 518 | abort(); |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | /* register suffix slot */ |
| 523 | if (old.start_addr + old.memory_size > start_addr + size) { |
| 524 | ram_addr_t size_delta; |
| 525 | |
| 526 | mem = kvm_alloc_slot(s); |
| 527 | mem->start_addr = start_addr + size; |
| 528 | size_delta = mem->start_addr - old.start_addr; |
| 529 | mem->memory_size = old.memory_size - size_delta; |
| 530 | mem->phys_offset = old.phys_offset + size_delta; |
| 531 | mem->flags = 0; |
| 532 | |
| 533 | err = kvm_set_user_memory_region(s, mem); |
| 534 | if (err) { |
| 535 | fprintf(stderr, "%s: error registering suffix slot: %s\n", |
| 536 | __func__, strerror(-err)); |
| 537 | abort(); |
| 538 | } |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | /* in case the KVM bug workaround already "consumed" the new slot */ |
| 543 | if (!size) |
| 544 | return; |
| 545 | |
| 546 | /* KVM does not need to know about this memory */ |
| 547 | if (flags >= IO_MEM_UNASSIGNED) |
| 548 | return; |
| 549 | |
| 550 | mem = kvm_alloc_slot(s); |
| 551 | mem->memory_size = size; |
| 552 | mem->start_addr = start_addr; |
| 553 | mem->phys_offset = phys_offset; |
| 554 | mem->flags = 0; |
| 555 | |
| 556 | err = kvm_set_user_memory_region(s, mem); |
| 557 | if (err) { |
| 558 | fprintf(stderr, "%s: error registering slot: %s\n", __func__, |
| 559 | strerror(-err)); |
| 560 | abort(); |
| 561 | } |
| 562 | } |
| 563 | |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 564 | static void kvm_client_set_memory(struct CPUPhysMemoryClient *client, |
| 565 | target_phys_addr_t start_addr, |
| 566 | ram_addr_t size, |
| 567 | ram_addr_t phys_offset) |
| 568 | { |
| 569 | kvm_set_phys_mem(start_addr, size, phys_offset); |
| 570 | } |
| 571 | |
| 572 | static int kvm_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client, |
| 573 | target_phys_addr_t start_addr, |
| 574 | target_phys_addr_t end_addr) |
| 575 | { |
| 576 | return kvm_physical_sync_dirty_bitmap(start_addr, end_addr); |
| 577 | } |
| 578 | |
| 579 | static int kvm_client_migration_log(struct CPUPhysMemoryClient *client, |
| 580 | int enable) |
| 581 | { |
| 582 | return kvm_set_migration_log(enable); |
| 583 | } |
| 584 | |
| 585 | static CPUPhysMemoryClient kvm_cpu_phys_memory_client = { |
| 586 | .set_memory = kvm_client_set_memory, |
| 587 | .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap, |
| 588 | .migration_log = kvm_client_migration_log, |
| 589 | }; |
| 590 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 591 | int kvm_init(int smp_cpus) |
| 592 | { |
Jan Kiszka | 168ccc1 | 2009-06-07 11:30:25 +0200 | [diff] [blame] | 593 | static const char upgrade_note[] = |
| 594 | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n" |
| 595 | "(see http://sourceforge.net/projects/kvm).\n"; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 596 | KVMState *s; |
| 597 | int ret; |
| 598 | int i; |
| 599 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 600 | s = qemu_mallocz(sizeof(KVMState)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 601 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 602 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 603 | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 604 | #endif |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 605 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) |
| 606 | s->slots[i].slot = i; |
| 607 | |
| 608 | s->vmfd = -1; |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 609 | s->fd = qemu_open("/dev/kvm", O_RDWR); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 610 | if (s->fd == -1) { |
| 611 | fprintf(stderr, "Could not access KVM kernel module: %m\n"); |
| 612 | ret = -errno; |
| 613 | goto err; |
| 614 | } |
| 615 | |
| 616 | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0); |
| 617 | if (ret < KVM_API_VERSION) { |
| 618 | if (ret > 0) |
| 619 | ret = -EINVAL; |
| 620 | fprintf(stderr, "kvm version too old\n"); |
| 621 | goto err; |
| 622 | } |
| 623 | |
| 624 | if (ret > KVM_API_VERSION) { |
| 625 | ret = -EINVAL; |
| 626 | fprintf(stderr, "kvm version not supported\n"); |
| 627 | goto err; |
| 628 | } |
| 629 | |
| 630 | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0); |
Alexander Graf | 0104dca | 2010-04-01 18:42:37 +0200 | [diff] [blame] | 631 | if (s->vmfd < 0) { |
| 632 | #ifdef TARGET_S390X |
| 633 | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to " |
| 634 | "your host kernel command line\n"); |
| 635 | #endif |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 636 | goto err; |
Alexander Graf | 0104dca | 2010-04-01 18:42:37 +0200 | [diff] [blame] | 637 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 638 | |
| 639 | /* initially, KVM allocated its own memory and we had to jump through |
| 640 | * hooks to make phys_ram_base point to this. Modern versions of KVM |
pbrook | 5579c7f | 2009-04-11 14:47:08 +0000 | [diff] [blame] | 641 | * just use a user allocated buffer so we can use regular pages |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 642 | * unmodified. Make sure we have a sufficiently modern version of KVM. |
| 643 | */ |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 644 | if (!kvm_check_extension(s, KVM_CAP_USER_MEMORY)) { |
| 645 | ret = -EINVAL; |
Jan Kiszka | 168ccc1 | 2009-06-07 11:30:25 +0200 | [diff] [blame] | 646 | fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n%s", |
| 647 | upgrade_note); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 648 | goto err; |
| 649 | } |
| 650 | |
aliguori | d85dc28 | 2008-12-09 19:59:09 +0000 | [diff] [blame] | 651 | /* There was a nasty bug in < kvm-80 that prevents memory slots from being |
| 652 | * destroyed properly. Since we rely on this capability, refuse to work |
| 653 | * with any kernel without this capability. */ |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 654 | if (!kvm_check_extension(s, KVM_CAP_DESTROY_MEMORY_REGION_WORKS)) { |
| 655 | ret = -EINVAL; |
aliguori | d85dc28 | 2008-12-09 19:59:09 +0000 | [diff] [blame] | 656 | |
| 657 | fprintf(stderr, |
Jan Kiszka | 168ccc1 | 2009-06-07 11:30:25 +0200 | [diff] [blame] | 658 | "KVM kernel module broken (DESTROY_MEMORY_REGION).\n%s", |
| 659 | upgrade_note); |
aliguori | d85dc28 | 2008-12-09 19:59:09 +0000 | [diff] [blame] | 660 | goto err; |
| 661 | } |
| 662 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 663 | s->coalesced_mmio = 0; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 664 | #ifdef KVM_CAP_COALESCED_MMIO |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 665 | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 666 | s->coalesced_mmio_ring = NULL; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 667 | #endif |
| 668 | |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 669 | s->broken_set_mem_region = 1; |
| 670 | #ifdef KVM_CAP_JOIN_MEMORY_REGIONS_WORKS |
| 671 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
| 672 | if (ret > 0) { |
| 673 | s->broken_set_mem_region = 0; |
| 674 | } |
| 675 | #endif |
| 676 | |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 677 | s->vcpu_events = 0; |
| 678 | #ifdef KVM_CAP_VCPU_EVENTS |
| 679 | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
| 680 | #endif |
| 681 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 682 | s->robust_singlestep = 0; |
| 683 | #ifdef KVM_CAP_X86_ROBUST_SINGLESTEP |
| 684 | s->robust_singlestep = |
| 685 | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
| 686 | #endif |
| 687 | |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 688 | s->debugregs = 0; |
| 689 | #ifdef KVM_CAP_DEBUGREGS |
| 690 | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
| 691 | #endif |
| 692 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 693 | s->xsave = 0; |
| 694 | #ifdef KVM_CAP_XSAVE |
| 695 | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
| 696 | #endif |
| 697 | |
| 698 | s->xcrs = 0; |
| 699 | #ifdef KVM_CAP_XCRS |
| 700 | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
| 701 | #endif |
| 702 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 703 | ret = kvm_arch_init(s, smp_cpus); |
| 704 | if (ret < 0) |
| 705 | goto err; |
| 706 | |
| 707 | kvm_state = s; |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 708 | cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 709 | |
| 710 | return 0; |
| 711 | |
| 712 | err: |
| 713 | if (s) { |
| 714 | if (s->vmfd != -1) |
| 715 | close(s->vmfd); |
| 716 | if (s->fd != -1) |
| 717 | close(s->fd); |
| 718 | } |
| 719 | qemu_free(s); |
| 720 | |
| 721 | return ret; |
| 722 | } |
| 723 | |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 724 | static int kvm_handle_io(uint16_t port, void *data, int direction, int size, |
| 725 | uint32_t count) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 726 | { |
| 727 | int i; |
| 728 | uint8_t *ptr = data; |
| 729 | |
| 730 | for (i = 0; i < count; i++) { |
| 731 | if (direction == KVM_EXIT_IO_IN) { |
| 732 | switch (size) { |
| 733 | case 1: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 734 | stb_p(ptr, cpu_inb(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 735 | break; |
| 736 | case 2: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 737 | stw_p(ptr, cpu_inw(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 738 | break; |
| 739 | case 4: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 740 | stl_p(ptr, cpu_inl(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 741 | break; |
| 742 | } |
| 743 | } else { |
| 744 | switch (size) { |
| 745 | case 1: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 746 | cpu_outb(port, ldub_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 747 | break; |
| 748 | case 2: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 749 | cpu_outw(port, lduw_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 750 | break; |
| 751 | case 4: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 752 | cpu_outl(port, ldl_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 753 | break; |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | ptr += size; |
| 758 | } |
| 759 | |
| 760 | return 1; |
| 761 | } |
| 762 | |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 763 | #ifdef KVM_CAP_INTERNAL_ERROR_DATA |
| 764 | static void kvm_handle_internal_error(CPUState *env, struct kvm_run *run) |
| 765 | { |
| 766 | |
| 767 | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) { |
| 768 | int i; |
| 769 | |
| 770 | fprintf(stderr, "KVM internal error. Suberror: %d\n", |
| 771 | run->internal.suberror); |
| 772 | |
| 773 | for (i = 0; i < run->internal.ndata; ++i) { |
| 774 | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
| 775 | i, (uint64_t)run->internal.data[i]); |
| 776 | } |
| 777 | } |
| 778 | cpu_dump_state(env, stderr, fprintf, 0); |
| 779 | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) { |
| 780 | fprintf(stderr, "emulation failure\n"); |
Gleb Natapov | 4513d92 | 2010-05-10 11:21:34 +0300 | [diff] [blame] | 781 | if (!kvm_arch_stop_on_emulation_error(env)) |
| 782 | return; |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 783 | } |
| 784 | /* FIXME: Should trigger a qmp message to let management know |
| 785 | * something went wrong. |
| 786 | */ |
| 787 | vm_stop(0); |
| 788 | } |
| 789 | #endif |
| 790 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 791 | void kvm_flush_coalesced_mmio_buffer(void) |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 792 | { |
| 793 | #ifdef KVM_CAP_COALESCED_MMIO |
| 794 | KVMState *s = kvm_state; |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 795 | if (s->coalesced_mmio_ring) { |
| 796 | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 797 | while (ring->first != ring->last) { |
| 798 | struct kvm_coalesced_mmio *ent; |
| 799 | |
| 800 | ent = &ring->coalesced_mmio[ring->first]; |
| 801 | |
| 802 | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
Marcelo Tosatti | 8519947 | 2010-02-22 13:57:54 -0300 | [diff] [blame] | 803 | smp_wmb(); |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 804 | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX; |
| 805 | } |
| 806 | } |
| 807 | #endif |
| 808 | } |
| 809 | |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 810 | static void do_kvm_cpu_synchronize_state(void *_env) |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 811 | { |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 812 | CPUState *env = _env; |
| 813 | |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 814 | if (!env->kvm_vcpu_dirty) { |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 815 | kvm_arch_get_registers(env); |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 816 | env->kvm_vcpu_dirty = 1; |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 817 | } |
| 818 | } |
| 819 | |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 820 | void kvm_cpu_synchronize_state(CPUState *env) |
| 821 | { |
| 822 | if (!env->kvm_vcpu_dirty) |
| 823 | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
| 824 | } |
| 825 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 826 | void kvm_cpu_synchronize_post_reset(CPUState *env) |
| 827 | { |
| 828 | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
| 829 | env->kvm_vcpu_dirty = 0; |
| 830 | } |
| 831 | |
| 832 | void kvm_cpu_synchronize_post_init(CPUState *env) |
| 833 | { |
| 834 | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
| 835 | env->kvm_vcpu_dirty = 0; |
| 836 | } |
| 837 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 838 | int kvm_cpu_exec(CPUState *env) |
| 839 | { |
| 840 | struct kvm_run *run = env->kvm_run; |
| 841 | int ret; |
| 842 | |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 843 | DPRINTF("kvm_cpu_exec()\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 844 | |
| 845 | do { |
Marcelo Tosatti | 6312b92 | 2010-02-17 20:14:43 -0200 | [diff] [blame] | 846 | #ifndef CONFIG_IOTHREAD |
aurel32 | be214e6 | 2009-03-06 21:48:00 +0000 | [diff] [blame] | 847 | if (env->exit_request) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 848 | DPRINTF("interrupt exit requested\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 849 | ret = 0; |
| 850 | break; |
| 851 | } |
Marcelo Tosatti | 6312b92 | 2010-02-17 20:14:43 -0200 | [diff] [blame] | 852 | #endif |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 853 | |
Marcelo Tosatti | 0af691d | 2010-05-04 09:45:27 -0300 | [diff] [blame] | 854 | if (kvm_arch_process_irqchip_events(env)) { |
| 855 | ret = 0; |
| 856 | break; |
| 857 | } |
| 858 | |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 859 | if (env->kvm_vcpu_dirty) { |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 860 | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 861 | env->kvm_vcpu_dirty = 0; |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 862 | } |
| 863 | |
Jan Kiszka | 8c14c17 | 2009-05-30 10:01:45 +0200 | [diff] [blame] | 864 | kvm_arch_pre_run(env, run); |
Marcelo Tosatti | 273faf1 | 2010-05-04 09:45:19 -0300 | [diff] [blame] | 865 | cpu_single_env = NULL; |
Glauber Costa | d549db5 | 2009-10-07 16:38:03 -0300 | [diff] [blame] | 866 | qemu_mutex_unlock_iothread(); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 867 | ret = kvm_vcpu_ioctl(env, KVM_RUN, 0); |
Glauber Costa | d549db5 | 2009-10-07 16:38:03 -0300 | [diff] [blame] | 868 | qemu_mutex_lock_iothread(); |
Marcelo Tosatti | 273faf1 | 2010-05-04 09:45:19 -0300 | [diff] [blame] | 869 | cpu_single_env = env; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 870 | kvm_arch_post_run(env, run); |
| 871 | |
| 872 | if (ret == -EINTR || ret == -EAGAIN) { |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 873 | cpu_exit(env); |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 874 | DPRINTF("io window exit\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 875 | ret = 0; |
| 876 | break; |
| 877 | } |
| 878 | |
| 879 | if (ret < 0) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 880 | DPRINTF("kvm run failed %s\n", strerror(-ret)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 881 | abort(); |
| 882 | } |
| 883 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 884 | kvm_flush_coalesced_mmio_buffer(); |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 885 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 886 | ret = 0; /* exit loop */ |
| 887 | switch (run->exit_reason) { |
| 888 | case KVM_EXIT_IO: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 889 | DPRINTF("handle_io\n"); |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 890 | ret = kvm_handle_io(run->io.port, |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 891 | (uint8_t *)run + run->io.data_offset, |
| 892 | run->io.direction, |
| 893 | run->io.size, |
| 894 | run->io.count); |
| 895 | break; |
| 896 | case KVM_EXIT_MMIO: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 897 | DPRINTF("handle_mmio\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 898 | cpu_physical_memory_rw(run->mmio.phys_addr, |
| 899 | run->mmio.data, |
| 900 | run->mmio.len, |
| 901 | run->mmio.is_write); |
| 902 | ret = 1; |
| 903 | break; |
| 904 | case KVM_EXIT_IRQ_WINDOW_OPEN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 905 | DPRINTF("irq_window_open\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 906 | break; |
| 907 | case KVM_EXIT_SHUTDOWN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 908 | DPRINTF("shutdown\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 909 | qemu_system_reset_request(); |
| 910 | ret = 1; |
| 911 | break; |
| 912 | case KVM_EXIT_UNKNOWN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 913 | DPRINTF("kvm_exit_unknown\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 914 | break; |
| 915 | case KVM_EXIT_FAIL_ENTRY: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 916 | DPRINTF("kvm_exit_fail_entry\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 917 | break; |
| 918 | case KVM_EXIT_EXCEPTION: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 919 | DPRINTF("kvm_exit_exception\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 920 | break; |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 921 | #ifdef KVM_CAP_INTERNAL_ERROR_DATA |
| 922 | case KVM_EXIT_INTERNAL_ERROR: |
| 923 | kvm_handle_internal_error(env, run); |
| 924 | break; |
| 925 | #endif |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 926 | case KVM_EXIT_DEBUG: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 927 | DPRINTF("kvm_exit_debug\n"); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 928 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
| 929 | if (kvm_arch_debug(&run->debug.arch)) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 930 | env->exception_index = EXCP_DEBUG; |
| 931 | return 0; |
| 932 | } |
| 933 | /* re-enter, this exception was guest-internal */ |
| 934 | ret = 1; |
| 935 | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 936 | break; |
| 937 | default: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 938 | DPRINTF("kvm_arch_handle_exit\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 939 | ret = kvm_arch_handle_exit(env, run); |
| 940 | break; |
| 941 | } |
| 942 | } while (ret > 0); |
| 943 | |
aurel32 | be214e6 | 2009-03-06 21:48:00 +0000 | [diff] [blame] | 944 | if (env->exit_request) { |
| 945 | env->exit_request = 0; |
aliguori | becfc39 | 2008-11-10 15:55:14 +0000 | [diff] [blame] | 946 | env->exception_index = EXCP_INTERRUPT; |
| 947 | } |
| 948 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 949 | return ret; |
| 950 | } |
| 951 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 952 | int kvm_ioctl(KVMState *s, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 953 | { |
| 954 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 955 | void *arg; |
| 956 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 957 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 958 | va_start(ap, type); |
| 959 | arg = va_arg(ap, void *); |
| 960 | va_end(ap); |
| 961 | |
| 962 | ret = ioctl(s->fd, type, arg); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 963 | if (ret == -1) |
| 964 | ret = -errno; |
| 965 | |
| 966 | return ret; |
| 967 | } |
| 968 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 969 | int kvm_vm_ioctl(KVMState *s, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 970 | { |
| 971 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 972 | void *arg; |
| 973 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 974 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 975 | va_start(ap, type); |
| 976 | arg = va_arg(ap, void *); |
| 977 | va_end(ap); |
| 978 | |
| 979 | ret = ioctl(s->vmfd, type, arg); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 980 | if (ret == -1) |
| 981 | ret = -errno; |
| 982 | |
| 983 | return ret; |
| 984 | } |
| 985 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 986 | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 987 | { |
| 988 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 989 | void *arg; |
| 990 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 991 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 992 | va_start(ap, type); |
| 993 | arg = va_arg(ap, void *); |
| 994 | va_end(ap); |
| 995 | |
| 996 | ret = ioctl(env->kvm_fd, type, arg); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 997 | if (ret == -1) |
| 998 | ret = -errno; |
| 999 | |
| 1000 | return ret; |
| 1001 | } |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1002 | |
| 1003 | int kvm_has_sync_mmu(void) |
| 1004 | { |
aurel32 | a9c1152 | 2008-12-18 22:42:51 +0000 | [diff] [blame] | 1005 | #ifdef KVM_CAP_SYNC_MMU |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1006 | KVMState *s = kvm_state; |
| 1007 | |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 1008 | return kvm_check_extension(s, KVM_CAP_SYNC_MMU); |
| 1009 | #else |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1010 | return 0; |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 1011 | #endif |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1012 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1013 | |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 1014 | int kvm_has_vcpu_events(void) |
| 1015 | { |
| 1016 | return kvm_state->vcpu_events; |
| 1017 | } |
| 1018 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1019 | int kvm_has_robust_singlestep(void) |
| 1020 | { |
| 1021 | return kvm_state->robust_singlestep; |
| 1022 | } |
| 1023 | |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 1024 | int kvm_has_debugregs(void) |
| 1025 | { |
| 1026 | return kvm_state->debugregs; |
| 1027 | } |
| 1028 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 1029 | int kvm_has_xsave(void) |
| 1030 | { |
| 1031 | return kvm_state->xsave; |
| 1032 | } |
| 1033 | |
| 1034 | int kvm_has_xcrs(void) |
| 1035 | { |
| 1036 | return kvm_state->xcrs; |
| 1037 | } |
| 1038 | |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1039 | void kvm_setup_guest_memory(void *start, size_t size) |
| 1040 | { |
| 1041 | if (!kvm_has_sync_mmu()) { |
| 1042 | #ifdef MADV_DONTFORK |
| 1043 | int ret = madvise(start, size, MADV_DONTFORK); |
| 1044 | |
| 1045 | if (ret) { |
| 1046 | perror("madvice"); |
| 1047 | exit(1); |
| 1048 | } |
| 1049 | #else |
| 1050 | fprintf(stderr, |
| 1051 | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n"); |
| 1052 | exit(1); |
| 1053 | #endif |
| 1054 | } |
| 1055 | } |
| 1056 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1057 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
| 1058 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env, |
| 1059 | target_ulong pc) |
| 1060 | { |
| 1061 | struct kvm_sw_breakpoint *bp; |
| 1062 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1063 | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1064 | if (bp->pc == pc) |
| 1065 | return bp; |
| 1066 | } |
| 1067 | return NULL; |
| 1068 | } |
| 1069 | |
| 1070 | int kvm_sw_breakpoints_active(CPUState *env) |
| 1071 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1072 | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1073 | } |
| 1074 | |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1075 | struct kvm_set_guest_debug_data { |
| 1076 | struct kvm_guest_debug dbg; |
| 1077 | CPUState *env; |
| 1078 | int err; |
| 1079 | }; |
| 1080 | |
| 1081 | static void kvm_invoke_set_guest_debug(void *data) |
| 1082 | { |
| 1083 | struct kvm_set_guest_debug_data *dbg_data = data; |
Jan Kiszka | b380772 | 2009-09-17 20:05:58 +0200 | [diff] [blame] | 1084 | CPUState *env = dbg_data->env; |
| 1085 | |
Jan Kiszka | b380772 | 2009-09-17 20:05:58 +0200 | [diff] [blame] | 1086 | 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] | 1087 | } |
| 1088 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1089 | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
| 1090 | { |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1091 | struct kvm_set_guest_debug_data data; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1092 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1093 | data.dbg.control = reinject_trap; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1094 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1095 | if (env->singlestep_enabled) { |
| 1096 | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
| 1097 | } |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1098 | kvm_arch_update_guest_debug(env, &data.dbg); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1099 | data.env = env; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1100 | |
Jan Kiszka | be41cbe | 2010-05-20 00:28:45 +0200 | [diff] [blame] | 1101 | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1102 | return data.err; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1103 | } |
| 1104 | |
| 1105 | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr, |
| 1106 | target_ulong len, int type) |
| 1107 | { |
| 1108 | struct kvm_sw_breakpoint *bp; |
| 1109 | CPUState *env; |
| 1110 | int err; |
| 1111 | |
| 1112 | if (type == GDB_BREAKPOINT_SW) { |
| 1113 | bp = kvm_find_sw_breakpoint(current_env, addr); |
| 1114 | if (bp) { |
| 1115 | bp->use_count++; |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
| 1119 | bp = qemu_malloc(sizeof(struct kvm_sw_breakpoint)); |
| 1120 | if (!bp) |
| 1121 | return -ENOMEM; |
| 1122 | |
| 1123 | bp->pc = addr; |
| 1124 | bp->use_count = 1; |
| 1125 | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
| 1126 | if (err) { |
| 1127 | free(bp); |
| 1128 | return err; |
| 1129 | } |
| 1130 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1131 | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1132 | bp, entry); |
| 1133 | } else { |
| 1134 | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
| 1135 | if (err) |
| 1136 | return err; |
| 1137 | } |
| 1138 | |
| 1139 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1140 | err = kvm_update_guest_debug(env, 0); |
| 1141 | if (err) |
| 1142 | return err; |
| 1143 | } |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr, |
| 1148 | target_ulong len, int type) |
| 1149 | { |
| 1150 | struct kvm_sw_breakpoint *bp; |
| 1151 | CPUState *env; |
| 1152 | int err; |
| 1153 | |
| 1154 | if (type == GDB_BREAKPOINT_SW) { |
| 1155 | bp = kvm_find_sw_breakpoint(current_env, addr); |
| 1156 | if (!bp) |
| 1157 | return -ENOENT; |
| 1158 | |
| 1159 | if (bp->use_count > 1) { |
| 1160 | bp->use_count--; |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
| 1164 | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
| 1165 | if (err) |
| 1166 | return err; |
| 1167 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1168 | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1169 | qemu_free(bp); |
| 1170 | } else { |
| 1171 | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
| 1172 | if (err) |
| 1173 | return err; |
| 1174 | } |
| 1175 | |
| 1176 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1177 | err = kvm_update_guest_debug(env, 0); |
| 1178 | if (err) |
| 1179 | return err; |
| 1180 | } |
| 1181 | return 0; |
| 1182 | } |
| 1183 | |
| 1184 | void kvm_remove_all_breakpoints(CPUState *current_env) |
| 1185 | { |
| 1186 | struct kvm_sw_breakpoint *bp, *next; |
| 1187 | KVMState *s = current_env->kvm_state; |
| 1188 | CPUState *env; |
| 1189 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1190 | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1191 | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
| 1192 | /* Try harder to find a CPU that currently sees the breakpoint. */ |
| 1193 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1194 | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) |
| 1195 | break; |
| 1196 | } |
| 1197 | } |
| 1198 | } |
| 1199 | kvm_arch_remove_all_hw_breakpoints(); |
| 1200 | |
| 1201 | for (env = first_cpu; env != NULL; env = env->next_cpu) |
| 1202 | kvm_update_guest_debug(env, 0); |
| 1203 | } |
| 1204 | |
| 1205 | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
| 1206 | |
| 1207 | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
| 1208 | { |
| 1209 | return -EINVAL; |
| 1210 | } |
| 1211 | |
| 1212 | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr, |
| 1213 | target_ulong len, int type) |
| 1214 | { |
| 1215 | return -EINVAL; |
| 1216 | } |
| 1217 | |
| 1218 | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr, |
| 1219 | target_ulong len, int type) |
| 1220 | { |
| 1221 | return -EINVAL; |
| 1222 | } |
| 1223 | |
| 1224 | void kvm_remove_all_breakpoints(CPUState *current_env) |
| 1225 | { |
| 1226 | } |
| 1227 | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1228 | |
| 1229 | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) |
| 1230 | { |
| 1231 | struct kvm_signal_mask *sigmask; |
| 1232 | int r; |
| 1233 | |
| 1234 | if (!sigset) |
| 1235 | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
| 1236 | |
| 1237 | sigmask = qemu_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
| 1238 | |
| 1239 | sigmask->len = 8; |
| 1240 | memcpy(sigmask->sigset, sigset, sizeof(*sigset)); |
| 1241 | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
| 1242 | free(sigmask); |
| 1243 | |
| 1244 | return r; |
| 1245 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1246 | |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1247 | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
| 1248 | { |
Paolo Bonzini | 98c8573 | 2010-04-19 18:59:30 +0000 | [diff] [blame] | 1249 | #ifdef KVM_IOEVENTFD |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1250 | struct kvm_ioeventfd kick = { |
| 1251 | .datamatch = val, |
| 1252 | .addr = addr, |
| 1253 | .len = 2, |
| 1254 | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
| 1255 | .fd = fd, |
| 1256 | }; |
| 1257 | int r; |
| 1258 | if (!kvm_enabled()) |
| 1259 | return -ENOSYS; |
| 1260 | if (!assign) |
| 1261 | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
| 1262 | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
| 1263 | if (r < 0) |
| 1264 | return r; |
| 1265 | return 0; |
Paolo Bonzini | 98c8573 | 2010-04-19 18:59:30 +0000 | [diff] [blame] | 1266 | #else |
| 1267 | return -ENOSYS; |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1268 | #endif |
Paolo Bonzini | 98c8573 | 2010-04-19 18:59:30 +0000 | [diff] [blame] | 1269 | } |