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" |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 27 | #include "hw/msi.h" |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 28 | #include "gdbstub.h" |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 29 | #include "kvm.h" |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 30 | #include "bswap.h" |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 31 | #include "memory.h" |
Avi Kivity | 80a1ea3 | 2012-02-08 16:39:06 +0200 | [diff] [blame] | 32 | #include "exec-memory.h" |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 33 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 34 | /* This check must be after config-host.h is included */ |
| 35 | #ifdef CONFIG_EVENTFD |
| 36 | #include <sys/eventfd.h> |
| 37 | #endif |
| 38 | |
Stefan Weil | 93148aa | 2012-02-26 18:46:12 +0100 | [diff] [blame] | 39 | /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */ |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 40 | #define PAGE_SIZE TARGET_PAGE_SIZE |
| 41 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 42 | //#define DEBUG_KVM |
| 43 | |
| 44 | #ifdef DEBUG_KVM |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 45 | #define DPRINTF(fmt, ...) \ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 46 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
| 47 | #else |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 48 | #define DPRINTF(fmt, ...) \ |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 49 | do { } while (0) |
| 50 | #endif |
| 51 | |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 52 | #define KVM_MSI_HASHTAB_SIZE 256 |
| 53 | |
aliguori | 34fc643 | 2008-11-19 17:41:58 +0000 | [diff] [blame] | 54 | typedef struct KVMSlot |
| 55 | { |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 56 | target_phys_addr_t start_addr; |
| 57 | ram_addr_t memory_size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 58 | void *ram; |
aliguori | 34fc643 | 2008-11-19 17:41:58 +0000 | [diff] [blame] | 59 | int slot; |
| 60 | int flags; |
| 61 | } KVMSlot; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 62 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 63 | typedef struct kvm_dirty_log KVMDirtyLog; |
| 64 | |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 65 | typedef struct KVMMSIRoute { |
| 66 | struct kvm_irq_routing_entry kroute; |
| 67 | QTAILQ_ENTRY(KVMMSIRoute) entry; |
| 68 | } KVMMSIRoute; |
| 69 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 70 | struct KVMState |
| 71 | { |
| 72 | KVMSlot slots[32]; |
| 73 | int fd; |
| 74 | int vmfd; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 75 | int coalesced_mmio; |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 76 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
Avi Kivity | 1cae88b | 2011-10-18 19:43:12 +0200 | [diff] [blame] | 77 | bool coalesced_flush_in_progress; |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 78 | int broken_set_mem_region; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 79 | int migration_log; |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 80 | int vcpu_events; |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 81 | int robust_singlestep; |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 82 | int debugregs; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 83 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
| 84 | struct kvm_sw_breakpoint_head kvm_sw_breakpoints; |
| 85 | #endif |
Jan Kiszka | 8a7c739 | 2012-03-02 20:28:48 +0100 | [diff] [blame] | 86 | int pit_state2; |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 87 | int xsave, xcrs; |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 88 | int many_ioeventfds; |
David Gibson | 92e4b51 | 2012-03-07 14:41:09 +0000 | [diff] [blame] | 89 | /* The man page (and posix) say ioctl numbers are signed int, but |
| 90 | * they're not. Linux, glibc and *BSD all treat ioctl numbers as |
| 91 | * unsigned, and treating them as signed here can break things */ |
| 92 | unsigned irqchip_inject_ioctl; |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 93 | #ifdef KVM_CAP_IRQ_ROUTING |
| 94 | struct kvm_irq_routing *irq_routes; |
| 95 | int nr_allocated_irq_routes; |
| 96 | uint32_t *used_gsi_bitmap; |
Jan Kiszka | 4e2e4e6 | 2012-05-16 15:41:08 -0300 | [diff] [blame] | 97 | unsigned int gsi_count; |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 98 | QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE]; |
Jan Kiszka | 4a3adeb | 2012-05-16 15:41:14 -0300 | [diff] [blame] | 99 | bool direct_msi; |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 100 | #endif |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 101 | }; |
| 102 | |
Jan Kiszka | 6a7af8c | 2011-02-07 12:19:25 +0100 | [diff] [blame] | 103 | KVMState *kvm_state; |
Jan Kiszka | 3d4b264 | 2012-01-31 19:17:52 +0100 | [diff] [blame] | 104 | bool kvm_kernel_irqchip; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 105 | |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 106 | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
| 107 | KVM_CAP_INFO(USER_MEMORY), |
| 108 | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), |
| 109 | KVM_CAP_LAST_INFO |
| 110 | }; |
| 111 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 112 | static KVMSlot *kvm_alloc_slot(KVMState *s) |
| 113 | { |
| 114 | int i; |
| 115 | |
| 116 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 117 | if (s->slots[i].memory_size == 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 118 | return &s->slots[i]; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 119 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 120 | } |
| 121 | |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 122 | fprintf(stderr, "%s: no free slot available\n", __func__); |
| 123 | abort(); |
| 124 | } |
| 125 | |
| 126 | static KVMSlot *kvm_lookup_matching_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 | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 129 | { |
| 130 | int i; |
| 131 | |
| 132 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 133 | KVMSlot *mem = &s->slots[i]; |
| 134 | |
| 135 | if (start_addr == mem->start_addr && |
| 136 | end_addr == mem->start_addr + mem->memory_size) { |
| 137 | return mem; |
| 138 | } |
| 139 | } |
| 140 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 141 | return NULL; |
| 142 | } |
| 143 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 144 | /* |
| 145 | * Find overlapping slot with lowest start address |
| 146 | */ |
| 147 | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s, |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 148 | target_phys_addr_t start_addr, |
| 149 | target_phys_addr_t end_addr) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 150 | { |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 151 | KVMSlot *found = NULL; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 152 | int i; |
| 153 | |
| 154 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 155 | KVMSlot *mem = &s->slots[i]; |
| 156 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 157 | if (mem->memory_size == 0 || |
| 158 | (found && found->start_addr < mem->start_addr)) { |
| 159 | continue; |
| 160 | } |
| 161 | |
| 162 | if (end_addr > mem->start_addr && |
| 163 | start_addr < mem->start_addr + mem->memory_size) { |
| 164 | found = mem; |
| 165 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 166 | } |
| 167 | |
aliguori | 6152e2a | 2009-04-17 14:26:33 +0000 | [diff] [blame] | 168 | return found; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 169 | } |
| 170 | |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 171 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
| 172 | target_phys_addr_t *phys_addr) |
Huang Ying | 983dfc3 | 2010-10-11 15:31:20 -0300 | [diff] [blame] | 173 | { |
| 174 | int i; |
| 175 | |
| 176 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 177 | KVMSlot *mem = &s->slots[i]; |
| 178 | |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 179 | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) { |
| 180 | *phys_addr = mem->start_addr + (ram - mem->ram); |
Huang Ying | 983dfc3 | 2010-10-11 15:31:20 -0300 | [diff] [blame] | 181 | return 1; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 188 | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
| 189 | { |
| 190 | struct kvm_userspace_memory_region mem; |
| 191 | |
| 192 | mem.slot = slot->slot; |
| 193 | mem.guest_phys_addr = slot->start_addr; |
| 194 | mem.memory_size = slot->memory_size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 195 | mem.userspace_addr = (unsigned long)slot->ram; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 196 | mem.flags = slot->flags; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 197 | if (s->migration_log) { |
| 198 | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
| 199 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 200 | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
| 201 | } |
| 202 | |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 203 | static void kvm_reset_vcpu(void *opaque) |
| 204 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 205 | CPUArchState *env = opaque; |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 206 | |
Jan Kiszka | caa5af0 | 2009-11-06 19:39:24 +0100 | [diff] [blame] | 207 | kvm_arch_reset_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 208 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 209 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 210 | int kvm_init_vcpu(CPUArchState *env) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 211 | { |
| 212 | KVMState *s = kvm_state; |
| 213 | long mmap_size; |
| 214 | int ret; |
| 215 | |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 216 | DPRINTF("kvm_init_vcpu\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 217 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 218 | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 219 | if (ret < 0) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 220 | DPRINTF("kvm_create_vcpu failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 221 | goto err; |
| 222 | } |
| 223 | |
| 224 | env->kvm_fd = ret; |
| 225 | env->kvm_state = s; |
Jan Kiszka | d841b6c | 2011-03-15 12:26:20 +0100 | [diff] [blame] | 226 | env->kvm_vcpu_dirty = 1; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 227 | |
| 228 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); |
| 229 | if (mmap_size < 0) { |
Jan Kiszka | 748a680 | 2011-02-01 22:15:48 +0100 | [diff] [blame] | 230 | ret = mmap_size; |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 231 | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 232 | goto err; |
| 233 | } |
| 234 | |
| 235 | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| 236 | env->kvm_fd, 0); |
| 237 | if (env->kvm_run == MAP_FAILED) { |
| 238 | ret = -errno; |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 239 | DPRINTF("mmap'ing vcpu state failed\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 240 | goto err; |
| 241 | } |
| 242 | |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 243 | if (s->coalesced_mmio && !s->coalesced_mmio_ring) { |
| 244 | s->coalesced_mmio_ring = |
| 245 | (void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE; |
| 246 | } |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 247 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 248 | ret = kvm_arch_init_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 249 | if (ret == 0) { |
Jan Kiszka | a08d436 | 2009-06-27 09:25:07 +0200 | [diff] [blame] | 250 | qemu_register_reset(kvm_reset_vcpu, env); |
Jan Kiszka | caa5af0 | 2009-11-06 19:39:24 +0100 | [diff] [blame] | 251 | kvm_arch_reset_vcpu(env); |
Jan Kiszka | 8d2ba1f | 2009-06-27 09:24:58 +0200 | [diff] [blame] | 252 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 253 | err: |
| 254 | return ret; |
| 255 | } |
| 256 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 257 | /* |
| 258 | * dirty pages logging control |
| 259 | */ |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 260 | |
| 261 | static int kvm_mem_flags(KVMState *s, bool log_dirty) |
| 262 | { |
| 263 | return log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0; |
| 264 | } |
| 265 | |
| 266 | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 267 | { |
| 268 | KVMState *s = kvm_state; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 269 | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 270 | int old_flags; |
| 271 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 272 | old_flags = mem->flags; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 273 | |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 274 | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty); |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 275 | mem->flags = flags; |
| 276 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 277 | /* If nothing changed effectively, no need to issue ioctl */ |
| 278 | if (s->migration_log) { |
| 279 | flags |= KVM_MEM_LOG_DIRTY_PAGES; |
| 280 | } |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 281 | |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 282 | if (flags == old_flags) { |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 283 | return 0; |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 284 | } |
| 285 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 286 | return kvm_set_user_memory_region(s, mem); |
| 287 | } |
| 288 | |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 289 | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
| 290 | ram_addr_t size, bool log_dirty) |
| 291 | { |
| 292 | KVMState *s = kvm_state; |
| 293 | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
| 294 | |
| 295 | if (mem == NULL) { |
| 296 | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
| 297 | TARGET_FMT_plx "\n", __func__, phys_addr, |
| 298 | (target_phys_addr_t)(phys_addr + size - 1)); |
| 299 | return -EINVAL; |
| 300 | } |
| 301 | return kvm_slot_dirty_pages_log_change(mem, log_dirty); |
| 302 | } |
| 303 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 304 | static void kvm_log_start(MemoryListener *listener, |
| 305 | MemoryRegionSection *section) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 306 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 307 | int r; |
| 308 | |
| 309 | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
| 310 | section->size, true); |
| 311 | if (r < 0) { |
| 312 | abort(); |
| 313 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 314 | } |
| 315 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 316 | static void kvm_log_stop(MemoryListener *listener, |
| 317 | MemoryRegionSection *section) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 318 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 319 | int r; |
| 320 | |
| 321 | r = kvm_dirty_pages_log_change(section->offset_within_address_space, |
| 322 | section->size, false); |
| 323 | if (r < 0) { |
| 324 | abort(); |
| 325 | } |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 326 | } |
| 327 | |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 328 | static int kvm_set_migration_log(int enable) |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 329 | { |
| 330 | KVMState *s = kvm_state; |
| 331 | KVMSlot *mem; |
| 332 | int i, err; |
| 333 | |
| 334 | s->migration_log = enable; |
| 335 | |
| 336 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
| 337 | mem = &s->slots[i]; |
| 338 | |
Alex Williamson | 70fedd7 | 2010-07-14 13:36:49 -0600 | [diff] [blame] | 339 | if (!mem->memory_size) { |
| 340 | continue; |
| 341 | } |
Jan Kiszka | 4495d6a | 2009-05-01 20:52:46 +0200 | [diff] [blame] | 342 | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) { |
| 343 | continue; |
| 344 | } |
| 345 | err = kvm_set_user_memory_region(s, mem); |
| 346 | if (err) { |
| 347 | return err; |
| 348 | } |
| 349 | } |
| 350 | return 0; |
| 351 | } |
| 352 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 353 | /* get kvm's dirty pages bitmap and update qemu's */ |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 354 | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
| 355 | unsigned long *bitmap) |
Alexander Graf | 96c1606 | 2009-07-27 12:49:56 +0200 | [diff] [blame] | 356 | { |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 357 | unsigned int i, j; |
Benjamin Herrenschmidt | aa90fec | 2012-01-11 19:46:21 +0000 | [diff] [blame] | 358 | unsigned long page_number, c; |
| 359 | target_phys_addr_t addr, addr1; |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 360 | unsigned int len = ((section->size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) / HOST_LONG_BITS; |
David Gibson | 3145fcb | 2012-04-04 11:15:54 +1000 | [diff] [blame] | 361 | unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE; |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 362 | |
| 363 | /* |
| 364 | * bitmap-traveling is faster than memory-traveling (for addr...) |
| 365 | * especially when most of the memory is not dirty. |
| 366 | */ |
| 367 | for (i = 0; i < len; i++) { |
| 368 | if (bitmap[i] != 0) { |
| 369 | c = leul_to_cpu(bitmap[i]); |
| 370 | do { |
| 371 | j = ffsl(c) - 1; |
| 372 | c &= ~(1ul << j); |
David Gibson | 3145fcb | 2012-04-04 11:15:54 +1000 | [diff] [blame] | 373 | page_number = (i * HOST_LONG_BITS + j) * hpratio; |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 374 | addr1 = page_number * TARGET_PAGE_SIZE; |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 375 | addr = section->offset_within_region + addr1; |
David Gibson | 3145fcb | 2012-04-04 11:15:54 +1000 | [diff] [blame] | 376 | memory_region_set_dirty(section->mr, addr, |
| 377 | TARGET_PAGE_SIZE * hpratio); |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 378 | } while (c != 0); |
| 379 | } |
| 380 | } |
| 381 | return 0; |
Alexander Graf | 96c1606 | 2009-07-27 12:49:56 +0200 | [diff] [blame] | 382 | } |
| 383 | |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 384 | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
| 385 | |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 386 | /** |
| 387 | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space |
Blue Swirl | fd4aa97 | 2011-10-16 16:04:59 +0000 | [diff] [blame] | 388 | * This function updates qemu's dirty bitmap using |
| 389 | * memory_region_set_dirty(). This means all bits are set |
| 390 | * to dirty. |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 391 | * |
aliguori | d3f8d37 | 2009-04-17 14:26:29 +0000 | [diff] [blame] | 392 | * @start_add: start of logged region. |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 393 | * @end_addr: end of logged region. |
| 394 | */ |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 395 | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 396 | { |
| 397 | KVMState *s = kvm_state; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 398 | unsigned long size, allocated_size = 0; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 399 | KVMDirtyLog d; |
| 400 | KVMSlot *mem; |
| 401 | int ret = 0; |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 402 | target_phys_addr_t start_addr = section->offset_within_address_space; |
| 403 | target_phys_addr_t end_addr = start_addr + section->size; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 404 | |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 405 | d.dirty_bitmap = NULL; |
| 406 | while (start_addr < end_addr) { |
| 407 | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); |
| 408 | if (mem == NULL) { |
| 409 | break; |
| 410 | } |
| 411 | |
Michael Tokarev | 51b0c60 | 2011-04-26 20:13:49 +0400 | [diff] [blame] | 412 | /* XXX bad kernel interface alert |
| 413 | * For dirty bitmap, kernel allocates array of size aligned to |
| 414 | * bits-per-long. But for case when the kernel is 64bits and |
| 415 | * the userspace is 32bits, userspace can't align to the same |
| 416 | * bits-per-long, since sizeof(long) is different between kernel |
| 417 | * and user space. This way, userspace will provide buffer which |
| 418 | * may be 4 bytes less than the kernel will use, resulting in |
| 419 | * userspace memory corruption (which is not detectable by valgrind |
| 420 | * too, in most cases). |
| 421 | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in |
| 422 | * a hope that sizeof(long) wont become >8 any time soon. |
| 423 | */ |
| 424 | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), |
| 425 | /*HOST_LONG_BITS*/ 64) / 8; |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 426 | if (!d.dirty_bitmap) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 427 | d.dirty_bitmap = g_malloc(size); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 428 | } else if (size > allocated_size) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 429 | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 430 | } |
| 431 | allocated_size = size; |
| 432 | memset(d.dirty_bitmap, 0, allocated_size); |
| 433 | |
| 434 | d.slot = mem->slot; |
| 435 | |
Anthony Liguori | 6e489f3 | 2009-07-27 15:23:59 -0500 | [diff] [blame] | 436 | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 437 | DPRINTF("ioctl failed %d\n", errno); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 438 | ret = -1; |
| 439 | break; |
| 440 | } |
| 441 | |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 442 | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
Marcelo Tosatti | 8369e01 | 2010-04-23 14:04:14 -0300 | [diff] [blame] | 443 | start_addr = mem->start_addr + mem->memory_size; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 444 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 445 | g_free(d.dirty_bitmap); |
Jan Kiszka | 151f774 | 2009-05-01 20:52:47 +0200 | [diff] [blame] | 446 | |
| 447 | return ret; |
aliguori | 5832d1f | 2008-11-24 19:36:26 +0000 | [diff] [blame] | 448 | } |
| 449 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 450 | 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] | 451 | { |
| 452 | int ret = -ENOSYS; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 453 | KVMState *s = kvm_state; |
| 454 | |
| 455 | if (s->coalesced_mmio) { |
| 456 | struct kvm_coalesced_mmio_zone zone; |
| 457 | |
| 458 | zone.addr = start; |
| 459 | zone.size = size; |
Michael S. Tsirkin | 7e68075 | 2012-02-29 17:54:29 +0200 | [diff] [blame] | 460 | zone.pad = 0; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 461 | |
| 462 | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
| 463 | } |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 464 | |
| 465 | return ret; |
| 466 | } |
| 467 | |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 468 | 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] | 469 | { |
| 470 | int ret = -ENOSYS; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 471 | KVMState *s = kvm_state; |
| 472 | |
| 473 | if (s->coalesced_mmio) { |
| 474 | struct kvm_coalesced_mmio_zone zone; |
| 475 | |
| 476 | zone.addr = start; |
| 477 | zone.size = size; |
Michael S. Tsirkin | 7e68075 | 2012-02-29 17:54:29 +0200 | [diff] [blame] | 478 | zone.pad = 0; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 479 | |
| 480 | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
| 481 | } |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 482 | |
| 483 | return ret; |
| 484 | } |
| 485 | |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 486 | int kvm_check_extension(KVMState *s, unsigned int extension) |
| 487 | { |
| 488 | int ret; |
| 489 | |
| 490 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); |
| 491 | if (ret < 0) { |
| 492 | ret = 0; |
| 493 | } |
| 494 | |
| 495 | return ret; |
| 496 | } |
| 497 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 498 | static int kvm_check_many_ioeventfds(void) |
| 499 | { |
Stefan Hajnoczi | d0dcac8 | 2011-01-25 16:17:14 +0000 | [diff] [blame] | 500 | /* Userspace can use ioeventfd for io notification. This requires a host |
| 501 | * that supports eventfd(2) and an I/O thread; since eventfd does not |
| 502 | * support SIGIO it cannot interrupt the vcpu. |
| 503 | * |
| 504 | * 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] | 505 | * can avoid creating too many ioeventfds. |
| 506 | */ |
Anthony Liguori | 12d4536 | 2011-08-22 08:24:58 -0500 | [diff] [blame] | 507 | #if defined(CONFIG_EVENTFD) |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 508 | int ioeventfds[7]; |
| 509 | int i, ret = 0; |
| 510 | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { |
| 511 | ioeventfds[i] = eventfd(0, EFD_CLOEXEC); |
| 512 | if (ioeventfds[i] < 0) { |
| 513 | break; |
| 514 | } |
| 515 | ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true); |
| 516 | if (ret < 0) { |
| 517 | close(ioeventfds[i]); |
| 518 | break; |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | /* Decide whether many devices are supported or not */ |
| 523 | ret = i == ARRAY_SIZE(ioeventfds); |
| 524 | |
| 525 | while (i-- > 0) { |
| 526 | kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false); |
| 527 | close(ioeventfds[i]); |
| 528 | } |
| 529 | return ret; |
| 530 | #else |
| 531 | return 0; |
| 532 | #endif |
| 533 | } |
| 534 | |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 535 | static const KVMCapabilityInfo * |
| 536 | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list) |
| 537 | { |
| 538 | while (list->name) { |
| 539 | if (!kvm_check_extension(s, list->value)) { |
| 540 | return list; |
| 541 | } |
| 542 | list++; |
| 543 | } |
| 544 | return NULL; |
| 545 | } |
| 546 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 547 | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 548 | { |
| 549 | KVMState *s = kvm_state; |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 550 | KVMSlot *mem, old; |
| 551 | int err; |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 552 | MemoryRegion *mr = section->mr; |
| 553 | bool log_dirty = memory_region_is_logging(mr); |
| 554 | target_phys_addr_t start_addr = section->offset_within_address_space; |
| 555 | ram_addr_t size = section->size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 556 | void *ram = NULL; |
Avi Kivity | 8f6f962 | 2012-02-29 13:22:12 +0200 | [diff] [blame] | 557 | unsigned delta; |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 558 | |
Gleb Natapov | 14542fe | 2010-07-28 18:13:23 +0300 | [diff] [blame] | 559 | /* kvm works in page size chunks, but the function may be called |
| 560 | with sub-page size and unaligned start address. */ |
Avi Kivity | 8f6f962 | 2012-02-29 13:22:12 +0200 | [diff] [blame] | 561 | delta = TARGET_PAGE_ALIGN(size) - size; |
| 562 | if (delta > size) { |
| 563 | return; |
| 564 | } |
| 565 | start_addr += delta; |
| 566 | size -= delta; |
| 567 | size &= TARGET_PAGE_MASK; |
| 568 | if (!size || (start_addr & ~TARGET_PAGE_MASK)) { |
| 569 | return; |
| 570 | } |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 571 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 572 | if (!memory_region_is_ram(mr)) { |
| 573 | return; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 574 | } |
| 575 | |
Avi Kivity | 8f6f962 | 2012-02-29 13:22:12 +0200 | [diff] [blame] | 576 | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 577 | |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 578 | while (1) { |
| 579 | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); |
| 580 | if (!mem) { |
| 581 | break; |
| 582 | } |
| 583 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 584 | if (add && start_addr >= mem->start_addr && |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 585 | (start_addr + size <= mem->start_addr + mem->memory_size) && |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 586 | (ram - start_addr == mem->ram - mem->start_addr)) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 587 | /* The new slot fits into the existing one and comes with |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 588 | * identical parameters - update flags and done. */ |
| 589 | kvm_slot_dirty_pages_log_change(mem, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 590 | return; |
| 591 | } |
| 592 | |
| 593 | old = *mem; |
| 594 | |
Avi Kivity | 3fbffb6 | 2012-01-15 16:13:59 +0200 | [diff] [blame] | 595 | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) { |
| 596 | kvm_physical_sync_dirty_bitmap(section); |
| 597 | } |
| 598 | |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 599 | /* unregister the overlapping slot */ |
| 600 | mem->memory_size = 0; |
| 601 | err = kvm_set_user_memory_region(s, mem); |
| 602 | if (err) { |
| 603 | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n", |
| 604 | __func__, strerror(-err)); |
| 605 | abort(); |
| 606 | } |
| 607 | |
| 608 | /* Workaround for older KVM versions: we can't join slots, even not by |
| 609 | * unregistering the previous ones and then registering the larger |
| 610 | * slot. We have to maintain the existing fragmentation. Sigh. |
| 611 | * |
| 612 | * This workaround assumes that the new slot starts at the same |
| 613 | * address as the first existing one. If not or if some overlapping |
| 614 | * slot comes around later, we will fail (not seen in practice so far) |
| 615 | * - and actually require a recent KVM version. */ |
| 616 | if (s->broken_set_mem_region && |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 617 | old.start_addr == start_addr && old.memory_size < size && add) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 618 | mem = kvm_alloc_slot(s); |
| 619 | mem->memory_size = old.memory_size; |
| 620 | mem->start_addr = old.start_addr; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 621 | mem->ram = old.ram; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 622 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 623 | |
| 624 | err = kvm_set_user_memory_region(s, mem); |
| 625 | if (err) { |
| 626 | fprintf(stderr, "%s: error updating slot: %s\n", __func__, |
| 627 | strerror(-err)); |
| 628 | abort(); |
| 629 | } |
| 630 | |
| 631 | start_addr += old.memory_size; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 632 | ram += old.memory_size; |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 633 | size -= old.memory_size; |
| 634 | continue; |
| 635 | } |
| 636 | |
| 637 | /* register prefix slot */ |
| 638 | if (old.start_addr < start_addr) { |
| 639 | mem = kvm_alloc_slot(s); |
| 640 | mem->memory_size = start_addr - old.start_addr; |
| 641 | mem->start_addr = old.start_addr; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 642 | mem->ram = old.ram; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 643 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 644 | |
| 645 | err = kvm_set_user_memory_region(s, mem); |
| 646 | if (err) { |
| 647 | fprintf(stderr, "%s: error registering prefix slot: %s\n", |
| 648 | __func__, strerror(-err)); |
Alexander Graf | d4d6868 | 2011-04-16 10:15:11 +0200 | [diff] [blame] | 649 | #ifdef TARGET_PPC |
| 650 | fprintf(stderr, "%s: This is probably because your kernel's " \ |
| 651 | "PAGE_SIZE is too big. Please try to use 4k " \ |
| 652 | "PAGE_SIZE!\n", __func__); |
| 653 | #endif |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 654 | abort(); |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | /* register suffix slot */ |
| 659 | if (old.start_addr + old.memory_size > start_addr + size) { |
| 660 | ram_addr_t size_delta; |
| 661 | |
| 662 | mem = kvm_alloc_slot(s); |
| 663 | mem->start_addr = start_addr + size; |
| 664 | size_delta = mem->start_addr - old.start_addr; |
| 665 | mem->memory_size = old.memory_size - size_delta; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 666 | mem->ram = old.ram + size_delta; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 667 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 668 | |
| 669 | err = kvm_set_user_memory_region(s, mem); |
| 670 | if (err) { |
| 671 | fprintf(stderr, "%s: error registering suffix slot: %s\n", |
| 672 | __func__, strerror(-err)); |
| 673 | abort(); |
| 674 | } |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | /* in case the KVM bug workaround already "consumed" the new slot */ |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 679 | if (!size) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 680 | return; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 681 | } |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 682 | if (!add) { |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 683 | return; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 684 | } |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 685 | mem = kvm_alloc_slot(s); |
| 686 | mem->memory_size = size; |
| 687 | mem->start_addr = start_addr; |
Avi Kivity | 9f213ed | 2011-12-15 19:55:26 +0200 | [diff] [blame] | 688 | mem->ram = ram; |
Michael S. Tsirkin | 25254bb | 2011-04-06 22:09:54 +0300 | [diff] [blame] | 689 | mem->flags = kvm_mem_flags(s, log_dirty); |
Michael S. Tsirkin | 46dbef6 | 2010-01-27 22:07:08 +0200 | [diff] [blame] | 690 | |
| 691 | err = kvm_set_user_memory_region(s, mem); |
| 692 | if (err) { |
| 693 | fprintf(stderr, "%s: error registering slot: %s\n", __func__, |
| 694 | strerror(-err)); |
| 695 | abort(); |
| 696 | } |
| 697 | } |
| 698 | |
Avi Kivity | 50c1e14 | 2012-02-08 21:36:02 +0200 | [diff] [blame] | 699 | static void kvm_begin(MemoryListener *listener) |
| 700 | { |
| 701 | } |
| 702 | |
| 703 | static void kvm_commit(MemoryListener *listener) |
| 704 | { |
| 705 | } |
| 706 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 707 | static void kvm_region_add(MemoryListener *listener, |
| 708 | MemoryRegionSection *section) |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 709 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 710 | kvm_set_phys_mem(section, true); |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 711 | } |
| 712 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 713 | static void kvm_region_del(MemoryListener *listener, |
| 714 | MemoryRegionSection *section) |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 715 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 716 | kvm_set_phys_mem(section, false); |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 717 | } |
| 718 | |
Avi Kivity | 50c1e14 | 2012-02-08 21:36:02 +0200 | [diff] [blame] | 719 | static void kvm_region_nop(MemoryListener *listener, |
| 720 | MemoryRegionSection *section) |
| 721 | { |
| 722 | } |
| 723 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 724 | static void kvm_log_sync(MemoryListener *listener, |
| 725 | MemoryRegionSection *section) |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 726 | { |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 727 | int r; |
| 728 | |
Avi Kivity | ffcde12 | 2011-12-19 13:18:13 +0200 | [diff] [blame] | 729 | r = kvm_physical_sync_dirty_bitmap(section); |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 730 | if (r < 0) { |
| 731 | abort(); |
| 732 | } |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 733 | } |
| 734 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 735 | static void kvm_log_global_start(struct MemoryListener *listener) |
| 736 | { |
| 737 | int r; |
| 738 | |
| 739 | r = kvm_set_migration_log(1); |
| 740 | assert(r >= 0); |
| 741 | } |
| 742 | |
| 743 | static void kvm_log_global_stop(struct MemoryListener *listener) |
| 744 | { |
| 745 | int r; |
| 746 | |
| 747 | r = kvm_set_migration_log(0); |
| 748 | assert(r >= 0); |
| 749 | } |
| 750 | |
Avi Kivity | 80a1ea3 | 2012-02-08 16:39:06 +0200 | [diff] [blame] | 751 | static void kvm_mem_ioeventfd_add(MemoryRegionSection *section, |
| 752 | bool match_data, uint64_t data, int fd) |
| 753 | { |
| 754 | int r; |
| 755 | |
Michael S. Tsirkin | 4b8f1c8 | 2012-03-20 14:31:38 +0200 | [diff] [blame] | 756 | assert(match_data && section->size <= 8); |
Avi Kivity | 80a1ea3 | 2012-02-08 16:39:06 +0200 | [diff] [blame] | 757 | |
Michael S. Tsirkin | 4b8f1c8 | 2012-03-20 14:31:38 +0200 | [diff] [blame] | 758 | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
| 759 | data, true, section->size); |
Avi Kivity | 80a1ea3 | 2012-02-08 16:39:06 +0200 | [diff] [blame] | 760 | if (r < 0) { |
| 761 | abort(); |
| 762 | } |
| 763 | } |
| 764 | |
| 765 | static void kvm_mem_ioeventfd_del(MemoryRegionSection *section, |
| 766 | bool match_data, uint64_t data, int fd) |
| 767 | { |
| 768 | int r; |
| 769 | |
Michael S. Tsirkin | 4b8f1c8 | 2012-03-20 14:31:38 +0200 | [diff] [blame] | 770 | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
| 771 | data, false, section->size); |
Avi Kivity | 80a1ea3 | 2012-02-08 16:39:06 +0200 | [diff] [blame] | 772 | if (r < 0) { |
| 773 | abort(); |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | static void kvm_io_ioeventfd_add(MemoryRegionSection *section, |
| 778 | bool match_data, uint64_t data, int fd) |
| 779 | { |
| 780 | int r; |
| 781 | |
| 782 | assert(match_data && section->size == 2); |
| 783 | |
| 784 | r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space, |
| 785 | data, true); |
| 786 | if (r < 0) { |
| 787 | abort(); |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | static void kvm_io_ioeventfd_del(MemoryRegionSection *section, |
| 792 | bool match_data, uint64_t data, int fd) |
| 793 | |
| 794 | { |
| 795 | int r; |
| 796 | |
| 797 | r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space, |
| 798 | data, false); |
| 799 | if (r < 0) { |
| 800 | abort(); |
| 801 | } |
| 802 | } |
| 803 | |
| 804 | static void kvm_eventfd_add(MemoryListener *listener, |
| 805 | MemoryRegionSection *section, |
| 806 | bool match_data, uint64_t data, int fd) |
| 807 | { |
| 808 | if (section->address_space == get_system_memory()) { |
| 809 | kvm_mem_ioeventfd_add(section, match_data, data, fd); |
| 810 | } else { |
| 811 | kvm_io_ioeventfd_add(section, match_data, data, fd); |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | static void kvm_eventfd_del(MemoryListener *listener, |
| 816 | MemoryRegionSection *section, |
| 817 | bool match_data, uint64_t data, int fd) |
| 818 | { |
| 819 | if (section->address_space == get_system_memory()) { |
| 820 | kvm_mem_ioeventfd_del(section, match_data, data, fd); |
| 821 | } else { |
| 822 | kvm_io_ioeventfd_del(section, match_data, data, fd); |
| 823 | } |
| 824 | } |
| 825 | |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 826 | static MemoryListener kvm_memory_listener = { |
Avi Kivity | 50c1e14 | 2012-02-08 21:36:02 +0200 | [diff] [blame] | 827 | .begin = kvm_begin, |
| 828 | .commit = kvm_commit, |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 829 | .region_add = kvm_region_add, |
| 830 | .region_del = kvm_region_del, |
Avi Kivity | 50c1e14 | 2012-02-08 21:36:02 +0200 | [diff] [blame] | 831 | .region_nop = kvm_region_nop, |
Anthony PERARD | e5896b1 | 2011-02-07 12:19:23 +0100 | [diff] [blame] | 832 | .log_start = kvm_log_start, |
| 833 | .log_stop = kvm_log_stop, |
Avi Kivity | a01672d | 2011-12-18 14:06:05 +0200 | [diff] [blame] | 834 | .log_sync = kvm_log_sync, |
| 835 | .log_global_start = kvm_log_global_start, |
| 836 | .log_global_stop = kvm_log_global_stop, |
Avi Kivity | 80a1ea3 | 2012-02-08 16:39:06 +0200 | [diff] [blame] | 837 | .eventfd_add = kvm_eventfd_add, |
| 838 | .eventfd_del = kvm_eventfd_del, |
Avi Kivity | 72e22d2 | 2012-02-08 15:05:50 +0200 | [diff] [blame] | 839 | .priority = 10, |
Michael S. Tsirkin | 7b8f3b7 | 2010-01-27 22:07:21 +0200 | [diff] [blame] | 840 | }; |
| 841 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 842 | static void kvm_handle_interrupt(CPUArchState *env, int mask) |
Jan Kiszka | aa7f74d | 2011-04-13 01:32:56 +0200 | [diff] [blame] | 843 | { |
| 844 | env->interrupt_request |= mask; |
| 845 | |
| 846 | if (!qemu_cpu_is_self(env)) { |
| 847 | qemu_cpu_kick(env); |
| 848 | } |
| 849 | } |
| 850 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 851 | int kvm_irqchip_set_irq(KVMState *s, int irq, int level) |
| 852 | { |
| 853 | struct kvm_irq_level event; |
| 854 | int ret; |
| 855 | |
Jan Kiszka | 3d4b264 | 2012-01-31 19:17:52 +0100 | [diff] [blame] | 856 | assert(kvm_irqchip_in_kernel()); |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 857 | |
| 858 | event.level = level; |
| 859 | event.irq = irq; |
| 860 | ret = kvm_vm_ioctl(s, s->irqchip_inject_ioctl, &event); |
| 861 | if (ret < 0) { |
| 862 | perror("kvm_set_irqchip_line"); |
| 863 | abort(); |
| 864 | } |
| 865 | |
| 866 | return (s->irqchip_inject_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
| 867 | } |
| 868 | |
| 869 | #ifdef KVM_CAP_IRQ_ROUTING |
| 870 | static void set_gsi(KVMState *s, unsigned int gsi) |
| 871 | { |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 872 | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
| 873 | } |
| 874 | |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 875 | static void clear_gsi(KVMState *s, unsigned int gsi) |
| 876 | { |
| 877 | s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32)); |
| 878 | } |
| 879 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 880 | static void kvm_init_irq_routing(KVMState *s) |
| 881 | { |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 882 | int gsi_count, i; |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 883 | |
| 884 | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING); |
| 885 | if (gsi_count > 0) { |
| 886 | unsigned int gsi_bits, i; |
| 887 | |
| 888 | /* Round up so we can search ints using ffs */ |
Jason Baron | bc8c678 | 2012-03-28 14:18:05 -0400 | [diff] [blame] | 889 | gsi_bits = ALIGN(gsi_count, 32); |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 890 | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8); |
Jan Kiszka | 4e2e4e6 | 2012-05-16 15:41:08 -0300 | [diff] [blame] | 891 | s->gsi_count = gsi_count; |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 892 | |
| 893 | /* Mark any over-allocated bits as already in use */ |
| 894 | for (i = gsi_count; i < gsi_bits; i++) { |
| 895 | set_gsi(s, i); |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | s->irq_routes = g_malloc0(sizeof(*s->irq_routes)); |
| 900 | s->nr_allocated_irq_routes = 0; |
| 901 | |
Jan Kiszka | 4a3adeb | 2012-05-16 15:41:14 -0300 | [diff] [blame] | 902 | if (!s->direct_msi) { |
| 903 | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { |
| 904 | QTAILQ_INIT(&s->msi_hashtab[i]); |
| 905 | } |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 906 | } |
| 907 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 908 | kvm_arch_init_irq_routing(s); |
| 909 | } |
| 910 | |
| 911 | static void kvm_add_routing_entry(KVMState *s, |
| 912 | struct kvm_irq_routing_entry *entry) |
| 913 | { |
| 914 | struct kvm_irq_routing_entry *new; |
| 915 | int n, size; |
| 916 | |
| 917 | if (s->irq_routes->nr == s->nr_allocated_irq_routes) { |
| 918 | n = s->nr_allocated_irq_routes * 2; |
| 919 | if (n < 64) { |
| 920 | n = 64; |
| 921 | } |
| 922 | size = sizeof(struct kvm_irq_routing); |
| 923 | size += n * sizeof(*new); |
| 924 | s->irq_routes = g_realloc(s->irq_routes, size); |
| 925 | s->nr_allocated_irq_routes = n; |
| 926 | } |
| 927 | n = s->irq_routes->nr++; |
| 928 | new = &s->irq_routes->entries[n]; |
| 929 | memset(new, 0, sizeof(*new)); |
| 930 | new->gsi = entry->gsi; |
| 931 | new->type = entry->type; |
| 932 | new->flags = entry->flags; |
| 933 | new->u = entry->u; |
| 934 | |
| 935 | set_gsi(s, entry->gsi); |
| 936 | } |
| 937 | |
| 938 | void kvm_irqchip_add_route(KVMState *s, int irq, int irqchip, int pin) |
| 939 | { |
| 940 | struct kvm_irq_routing_entry e; |
| 941 | |
Jan Kiszka | 4e2e4e6 | 2012-05-16 15:41:08 -0300 | [diff] [blame] | 942 | assert(pin < s->gsi_count); |
| 943 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 944 | e.gsi = irq; |
| 945 | e.type = KVM_IRQ_ROUTING_IRQCHIP; |
| 946 | e.flags = 0; |
| 947 | e.u.irqchip.irqchip = irqchip; |
| 948 | e.u.irqchip.pin = pin; |
| 949 | kvm_add_routing_entry(s, &e); |
| 950 | } |
| 951 | |
| 952 | int kvm_irqchip_commit_routes(KVMState *s) |
| 953 | { |
| 954 | s->irq_routes->flags = 0; |
| 955 | return kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); |
| 956 | } |
| 957 | |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 958 | static void kvm_irqchip_release_virq(KVMState *s, int virq) |
| 959 | { |
| 960 | struct kvm_irq_routing_entry *e; |
| 961 | int i; |
| 962 | |
| 963 | for (i = 0; i < s->irq_routes->nr; i++) { |
| 964 | e = &s->irq_routes->entries[i]; |
| 965 | if (e->gsi == virq) { |
| 966 | s->irq_routes->nr--; |
| 967 | *e = s->irq_routes->entries[s->irq_routes->nr]; |
| 968 | } |
| 969 | } |
| 970 | clear_gsi(s, virq); |
| 971 | } |
| 972 | |
| 973 | static unsigned int kvm_hash_msi(uint32_t data) |
| 974 | { |
| 975 | /* This is optimized for IA32 MSI layout. However, no other arch shall |
| 976 | * repeat the mistake of not providing a direct MSI injection API. */ |
| 977 | return data & 0xff; |
| 978 | } |
| 979 | |
| 980 | static void kvm_flush_dynamic_msi_routes(KVMState *s) |
| 981 | { |
| 982 | KVMMSIRoute *route, *next; |
| 983 | unsigned int hash; |
| 984 | |
| 985 | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { |
| 986 | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { |
| 987 | kvm_irqchip_release_virq(s, route->kroute.gsi); |
| 988 | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); |
| 989 | g_free(route); |
| 990 | } |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | static int kvm_irqchip_get_virq(KVMState *s) |
| 995 | { |
| 996 | uint32_t *word = s->used_gsi_bitmap; |
| 997 | int max_words = ALIGN(s->gsi_count, 32) / 32; |
| 998 | int i, bit; |
| 999 | bool retry = true; |
| 1000 | |
| 1001 | again: |
| 1002 | /* Return the lowest unused GSI in the bitmap */ |
| 1003 | for (i = 0; i < max_words; i++) { |
| 1004 | bit = ffs(~word[i]); |
| 1005 | if (!bit) { |
| 1006 | continue; |
| 1007 | } |
| 1008 | |
| 1009 | return bit - 1 + i * 32; |
| 1010 | } |
Jan Kiszka | 4a3adeb | 2012-05-16 15:41:14 -0300 | [diff] [blame] | 1011 | if (!s->direct_msi && retry) { |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 1012 | retry = false; |
| 1013 | kvm_flush_dynamic_msi_routes(s); |
| 1014 | goto again; |
| 1015 | } |
| 1016 | return -ENOSPC; |
| 1017 | |
| 1018 | } |
| 1019 | |
| 1020 | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg) |
| 1021 | { |
| 1022 | unsigned int hash = kvm_hash_msi(msg.data); |
| 1023 | KVMMSIRoute *route; |
| 1024 | |
| 1025 | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { |
| 1026 | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address && |
| 1027 | route->kroute.u.msi.address_hi == (msg.address >> 32) && |
| 1028 | route->kroute.u.msi.data == msg.data) { |
| 1029 | return route; |
| 1030 | } |
| 1031 | } |
| 1032 | return NULL; |
| 1033 | } |
| 1034 | |
| 1035 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) |
| 1036 | { |
Jan Kiszka | 4a3adeb | 2012-05-16 15:41:14 -0300 | [diff] [blame] | 1037 | struct kvm_msi msi; |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 1038 | KVMMSIRoute *route; |
| 1039 | |
Jan Kiszka | 4a3adeb | 2012-05-16 15:41:14 -0300 | [diff] [blame] | 1040 | if (s->direct_msi) { |
| 1041 | msi.address_lo = (uint32_t)msg.address; |
| 1042 | msi.address_hi = msg.address >> 32; |
| 1043 | msi.data = msg.data; |
| 1044 | msi.flags = 0; |
| 1045 | memset(msi.pad, 0, sizeof(msi.pad)); |
| 1046 | |
| 1047 | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi); |
| 1048 | } |
| 1049 | |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 1050 | route = kvm_lookup_msi_route(s, msg); |
| 1051 | if (!route) { |
| 1052 | int virq, ret; |
| 1053 | |
| 1054 | virq = kvm_irqchip_get_virq(s); |
| 1055 | if (virq < 0) { |
| 1056 | return virq; |
| 1057 | } |
| 1058 | |
| 1059 | route = g_malloc(sizeof(KVMMSIRoute)); |
| 1060 | route->kroute.gsi = virq; |
| 1061 | route->kroute.type = KVM_IRQ_ROUTING_MSI; |
| 1062 | route->kroute.flags = 0; |
| 1063 | route->kroute.u.msi.address_lo = (uint32_t)msg.address; |
| 1064 | route->kroute.u.msi.address_hi = msg.address >> 32; |
| 1065 | route->kroute.u.msi.data = msg.data; |
| 1066 | |
| 1067 | kvm_add_routing_entry(s, &route->kroute); |
| 1068 | |
| 1069 | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, |
| 1070 | entry); |
| 1071 | |
| 1072 | ret = kvm_irqchip_commit_routes(s); |
| 1073 | if (ret < 0) { |
| 1074 | return ret; |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); |
| 1079 | |
| 1080 | return kvm_irqchip_set_irq(s, route->kroute.gsi, 1); |
| 1081 | } |
| 1082 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1083 | #else /* !KVM_CAP_IRQ_ROUTING */ |
| 1084 | |
| 1085 | static void kvm_init_irq_routing(KVMState *s) |
| 1086 | { |
| 1087 | } |
Jan Kiszka | 04fa27f | 2012-05-16 15:41:10 -0300 | [diff] [blame] | 1088 | |
| 1089 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) |
| 1090 | { |
| 1091 | abort(); |
| 1092 | } |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1093 | #endif /* !KVM_CAP_IRQ_ROUTING */ |
| 1094 | |
| 1095 | static int kvm_irqchip_create(KVMState *s) |
| 1096 | { |
| 1097 | QemuOptsList *list = qemu_find_opts("machine"); |
| 1098 | int ret; |
| 1099 | |
| 1100 | if (QTAILQ_EMPTY(&list->head) || |
| 1101 | !qemu_opt_get_bool(QTAILQ_FIRST(&list->head), |
Jan Kiszka | a24b910 | 2012-05-16 15:41:15 -0300 | [diff] [blame^] | 1102 | "kernel_irqchip", true) || |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1103 | !kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
| 1104 | return 0; |
| 1105 | } |
| 1106 | |
| 1107 | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); |
| 1108 | if (ret < 0) { |
| 1109 | fprintf(stderr, "Create kernel irqchip failed\n"); |
| 1110 | return ret; |
| 1111 | } |
| 1112 | |
| 1113 | s->irqchip_inject_ioctl = KVM_IRQ_LINE; |
| 1114 | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) { |
| 1115 | s->irqchip_inject_ioctl = KVM_IRQ_LINE_STATUS; |
| 1116 | } |
Jan Kiszka | 3d4b264 | 2012-01-31 19:17:52 +0100 | [diff] [blame] | 1117 | kvm_kernel_irqchip = true; |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1118 | |
| 1119 | kvm_init_irq_routing(s); |
| 1120 | |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
Jan Kiszka | cad1e28 | 2011-01-21 21:48:16 +0100 | [diff] [blame] | 1124 | int kvm_init(void) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1125 | { |
Jan Kiszka | 168ccc1 | 2009-06-07 11:30:25 +0200 | [diff] [blame] | 1126 | static const char upgrade_note[] = |
| 1127 | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n" |
| 1128 | "(see http://sourceforge.net/projects/kvm).\n"; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1129 | KVMState *s; |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 1130 | const KVMCapabilityInfo *missing_cap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1131 | int ret; |
| 1132 | int i; |
| 1133 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1134 | s = g_malloc0(sizeof(KVMState)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1135 | |
David Gibson | 3145fcb | 2012-04-04 11:15:54 +1000 | [diff] [blame] | 1136 | /* |
| 1137 | * On systems where the kernel can support different base page |
| 1138 | * sizes, host page size may be different from TARGET_PAGE_SIZE, |
| 1139 | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum |
| 1140 | * page size for the system though. |
| 1141 | */ |
| 1142 | assert(TARGET_PAGE_SIZE <= getpagesize()); |
| 1143 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1144 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1145 | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1146 | #endif |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1147 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1148 | s->slots[i].slot = i; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1149 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1150 | s->vmfd = -1; |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 1151 | s->fd = qemu_open("/dev/kvm", O_RDWR); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1152 | if (s->fd == -1) { |
| 1153 | fprintf(stderr, "Could not access KVM kernel module: %m\n"); |
| 1154 | ret = -errno; |
| 1155 | goto err; |
| 1156 | } |
| 1157 | |
| 1158 | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0); |
| 1159 | if (ret < KVM_API_VERSION) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1160 | if (ret > 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1161 | ret = -EINVAL; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1162 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1163 | fprintf(stderr, "kvm version too old\n"); |
| 1164 | goto err; |
| 1165 | } |
| 1166 | |
| 1167 | if (ret > KVM_API_VERSION) { |
| 1168 | ret = -EINVAL; |
| 1169 | fprintf(stderr, "kvm version not supported\n"); |
| 1170 | goto err; |
| 1171 | } |
| 1172 | |
| 1173 | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0); |
Alexander Graf | 0104dca | 2010-04-01 18:42:37 +0200 | [diff] [blame] | 1174 | if (s->vmfd < 0) { |
| 1175 | #ifdef TARGET_S390X |
| 1176 | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to " |
| 1177 | "your host kernel command line\n"); |
| 1178 | #endif |
Xu He Jie | db9eae1 | 2011-10-27 10:15:13 +0800 | [diff] [blame] | 1179 | ret = s->vmfd; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1180 | goto err; |
Alexander Graf | 0104dca | 2010-04-01 18:42:37 +0200 | [diff] [blame] | 1181 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1182 | |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 1183 | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
| 1184 | if (!missing_cap) { |
| 1185 | missing_cap = |
| 1186 | kvm_check_extension_list(s, kvm_arch_required_capabilities); |
| 1187 | } |
| 1188 | if (missing_cap) { |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 1189 | ret = -EINVAL; |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 1190 | fprintf(stderr, "kvm does not support %s\n%s", |
| 1191 | missing_cap->name, upgrade_note); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1192 | goto err; |
| 1193 | } |
| 1194 | |
Anthony Liguori | ad7b8b3 | 2009-05-08 15:33:24 -0500 | [diff] [blame] | 1195 | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 1196 | |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 1197 | s->broken_set_mem_region = 1; |
Lai Jiangshan | 14a0951 | 2010-12-10 15:52:36 +0800 | [diff] [blame] | 1198 | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 1199 | if (ret > 0) { |
| 1200 | s->broken_set_mem_region = 0; |
| 1201 | } |
Jan Kiszka | e69917e | 2009-05-01 20:42:15 +0200 | [diff] [blame] | 1202 | |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 1203 | #ifdef KVM_CAP_VCPU_EVENTS |
| 1204 | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); |
| 1205 | #endif |
| 1206 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1207 | s->robust_singlestep = |
| 1208 | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1209 | |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 1210 | #ifdef KVM_CAP_DEBUGREGS |
| 1211 | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); |
| 1212 | #endif |
| 1213 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 1214 | #ifdef KVM_CAP_XSAVE |
| 1215 | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); |
| 1216 | #endif |
| 1217 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 1218 | #ifdef KVM_CAP_XCRS |
| 1219 | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); |
| 1220 | #endif |
| 1221 | |
Jan Kiszka | 8a7c739 | 2012-03-02 20:28:48 +0100 | [diff] [blame] | 1222 | #ifdef KVM_CAP_PIT_STATE2 |
| 1223 | s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); |
| 1224 | #endif |
| 1225 | |
Jan Kiszka | 4a3adeb | 2012-05-16 15:41:14 -0300 | [diff] [blame] | 1226 | s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0); |
| 1227 | |
Jan Kiszka | cad1e28 | 2011-01-21 21:48:16 +0100 | [diff] [blame] | 1228 | ret = kvm_arch_init(s); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1229 | if (ret < 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1230 | goto err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1231 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1232 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1233 | ret = kvm_irqchip_create(s); |
| 1234 | if (ret < 0) { |
| 1235 | goto err; |
| 1236 | } |
| 1237 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1238 | kvm_state = s; |
Avi Kivity | 7376e58 | 2012-02-08 21:05:17 +0200 | [diff] [blame] | 1239 | memory_listener_register(&kvm_memory_listener, NULL); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1240 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 1241 | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
| 1242 | |
Jan Kiszka | aa7f74d | 2011-04-13 01:32:56 +0200 | [diff] [blame] | 1243 | cpu_interrupt_handler = kvm_handle_interrupt; |
| 1244 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1245 | return 0; |
| 1246 | |
| 1247 | err: |
| 1248 | if (s) { |
Xu He Jie | db9eae1 | 2011-10-27 10:15:13 +0800 | [diff] [blame] | 1249 | if (s->vmfd >= 0) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1250 | close(s->vmfd); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1251 | } |
| 1252 | if (s->fd != -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1253 | close(s->fd); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1254 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1255 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1256 | g_free(s); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1257 | |
| 1258 | return ret; |
| 1259 | } |
| 1260 | |
Jan Kiszka | b30e93e | 2011-02-01 22:16:01 +0100 | [diff] [blame] | 1261 | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
| 1262 | uint32_t count) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1263 | { |
| 1264 | int i; |
| 1265 | uint8_t *ptr = data; |
| 1266 | |
| 1267 | for (i = 0; i < count; i++) { |
| 1268 | if (direction == KVM_EXIT_IO_IN) { |
| 1269 | switch (size) { |
| 1270 | case 1: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 1271 | stb_p(ptr, cpu_inb(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1272 | break; |
| 1273 | case 2: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 1274 | stw_p(ptr, cpu_inw(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1275 | break; |
| 1276 | case 4: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 1277 | stl_p(ptr, cpu_inl(port)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1278 | break; |
| 1279 | } |
| 1280 | } else { |
| 1281 | switch (size) { |
| 1282 | case 1: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 1283 | cpu_outb(port, ldub_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1284 | break; |
| 1285 | case 2: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 1286 | cpu_outw(port, lduw_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1287 | break; |
| 1288 | case 4: |
Blue Swirl | afcea8c | 2009-09-20 16:05:47 +0000 | [diff] [blame] | 1289 | cpu_outl(port, ldl_p(ptr)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1290 | break; |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | ptr += size; |
| 1295 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1298 | static int kvm_handle_internal_error(CPUArchState *env, struct kvm_run *run) |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1299 | { |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 1300 | fprintf(stderr, "KVM internal error."); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1301 | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) { |
| 1302 | int i; |
| 1303 | |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 1304 | fprintf(stderr, " Suberror: %d\n", run->internal.suberror); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1305 | for (i = 0; i < run->internal.ndata; ++i) { |
| 1306 | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", |
| 1307 | i, (uint64_t)run->internal.data[i]); |
| 1308 | } |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 1309 | } else { |
| 1310 | fprintf(stderr, "\n"); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1311 | } |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1312 | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) { |
| 1313 | fprintf(stderr, "emulation failure\n"); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1314 | if (!kvm_arch_stop_on_emulation_error(env)) { |
Jan Kiszka | f5c848e | 2011-01-21 21:48:08 +0100 | [diff] [blame] | 1315 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1316 | return EXCP_INTERRUPT; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1317 | } |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1318 | } |
| 1319 | /* FIXME: Should trigger a qmp message to let management know |
| 1320 | * something went wrong. |
| 1321 | */ |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1322 | return -1; |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1323 | } |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1324 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 1325 | void kvm_flush_coalesced_mmio_buffer(void) |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 1326 | { |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 1327 | KVMState *s = kvm_state; |
Avi Kivity | 1cae88b | 2011-10-18 19:43:12 +0200 | [diff] [blame] | 1328 | |
| 1329 | if (s->coalesced_flush_in_progress) { |
| 1330 | return; |
| 1331 | } |
| 1332 | |
| 1333 | s->coalesced_flush_in_progress = true; |
| 1334 | |
Sheng Yang | 62a2744 | 2010-01-26 19:21:16 +0800 | [diff] [blame] | 1335 | if (s->coalesced_mmio_ring) { |
| 1336 | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 1337 | while (ring->first != ring->last) { |
| 1338 | struct kvm_coalesced_mmio *ent; |
| 1339 | |
| 1340 | ent = &ring->coalesced_mmio[ring->first]; |
| 1341 | |
| 1342 | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); |
Marcelo Tosatti | 8519947 | 2010-02-22 13:57:54 -0300 | [diff] [blame] | 1343 | smp_wmb(); |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 1344 | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX; |
| 1345 | } |
| 1346 | } |
Avi Kivity | 1cae88b | 2011-10-18 19:43:12 +0200 | [diff] [blame] | 1347 | |
| 1348 | s->coalesced_flush_in_progress = false; |
aliguori | f65ed4c | 2008-12-09 20:09:57 +0000 | [diff] [blame] | 1349 | } |
| 1350 | |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 1351 | static void do_kvm_cpu_synchronize_state(void *_env) |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 1352 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1353 | CPUArchState *env = _env; |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 1354 | |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 1355 | if (!env->kvm_vcpu_dirty) { |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 1356 | kvm_arch_get_registers(env); |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 1357 | env->kvm_vcpu_dirty = 1; |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 1358 | } |
| 1359 | } |
| 1360 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1361 | void kvm_cpu_synchronize_state(CPUArchState *env) |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 1362 | { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1363 | if (!env->kvm_vcpu_dirty) { |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 1364 | run_on_cpu(env, do_kvm_cpu_synchronize_state, env); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1365 | } |
Jan Kiszka | 2705d56 | 2010-05-04 09:45:23 -0300 | [diff] [blame] | 1366 | } |
| 1367 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1368 | void kvm_cpu_synchronize_post_reset(CPUArchState *env) |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 1369 | { |
| 1370 | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); |
| 1371 | env->kvm_vcpu_dirty = 0; |
| 1372 | } |
| 1373 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1374 | void kvm_cpu_synchronize_post_init(CPUArchState *env) |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 1375 | { |
| 1376 | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); |
| 1377 | env->kvm_vcpu_dirty = 0; |
| 1378 | } |
| 1379 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1380 | int kvm_cpu_exec(CPUArchState *env) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1381 | { |
| 1382 | struct kvm_run *run = env->kvm_run; |
Jan Kiszka | 7cbb533 | 2011-03-15 12:26:25 +0100 | [diff] [blame] | 1383 | int ret, run_ret; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1384 | |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1385 | DPRINTF("kvm_cpu_exec()\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1386 | |
Jan Kiszka | 9903686 | 2011-03-02 08:56:13 +0100 | [diff] [blame] | 1387 | if (kvm_arch_process_async_events(env)) { |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1388 | env->exit_request = 0; |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 1389 | return EXCP_HLT; |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1390 | } |
| 1391 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1392 | do { |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 1393 | if (env->kvm_vcpu_dirty) { |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 1394 | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
Jan Kiszka | 9ded274 | 2010-02-03 21:17:05 +0100 | [diff] [blame] | 1395 | env->kvm_vcpu_dirty = 0; |
Avi Kivity | 4c0960c | 2009-08-17 23:19:53 +0300 | [diff] [blame] | 1396 | } |
| 1397 | |
Jan Kiszka | 8c14c17 | 2009-05-30 10:01:45 +0200 | [diff] [blame] | 1398 | kvm_arch_pre_run(env, run); |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1399 | if (env->exit_request) { |
| 1400 | DPRINTF("interrupt exit requested\n"); |
| 1401 | /* |
| 1402 | * KVM requires us to reenter the kernel after IO exits to complete |
| 1403 | * instruction emulation. This self-signal will ensure that we |
| 1404 | * leave ASAP again. |
| 1405 | */ |
| 1406 | qemu_cpu_kick_self(); |
| 1407 | } |
Glauber Costa | d549db5 | 2009-10-07 16:38:03 -0300 | [diff] [blame] | 1408 | qemu_mutex_unlock_iothread(); |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1409 | |
Jan Kiszka | 7cbb533 | 2011-03-15 12:26:25 +0100 | [diff] [blame] | 1410 | run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0); |
Jan Kiszka | 9ccfac9 | 2011-02-01 22:16:00 +0100 | [diff] [blame] | 1411 | |
Glauber Costa | d549db5 | 2009-10-07 16:38:03 -0300 | [diff] [blame] | 1412 | qemu_mutex_lock_iothread(); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1413 | kvm_arch_post_run(env, run); |
| 1414 | |
Jan Kiszka | b0c883b | 2011-01-21 21:48:19 +0100 | [diff] [blame] | 1415 | kvm_flush_coalesced_mmio_buffer(); |
| 1416 | |
Jan Kiszka | 7cbb533 | 2011-03-15 12:26:25 +0100 | [diff] [blame] | 1417 | if (run_ret < 0) { |
Jan Kiszka | dc77d34 | 2011-03-15 12:26:26 +0100 | [diff] [blame] | 1418 | if (run_ret == -EINTR || run_ret == -EAGAIN) { |
| 1419 | DPRINTF("io window exit\n"); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1420 | ret = EXCP_INTERRUPT; |
Jan Kiszka | dc77d34 | 2011-03-15 12:26:26 +0100 | [diff] [blame] | 1421 | break; |
| 1422 | } |
Michael Ellerman | 7b011fb | 2011-12-16 11:20:20 +1100 | [diff] [blame] | 1423 | fprintf(stderr, "error: kvm run failed %s\n", |
| 1424 | strerror(-run_ret)); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1425 | abort(); |
| 1426 | } |
| 1427 | |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1428 | switch (run->exit_reason) { |
| 1429 | case KVM_EXIT_IO: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1430 | DPRINTF("handle_io\n"); |
Jan Kiszka | b30e93e | 2011-02-01 22:16:01 +0100 | [diff] [blame] | 1431 | kvm_handle_io(run->io.port, |
| 1432 | (uint8_t *)run + run->io.data_offset, |
| 1433 | run->io.direction, |
| 1434 | run->io.size, |
| 1435 | run->io.count); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1436 | ret = 0; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1437 | break; |
| 1438 | case KVM_EXIT_MMIO: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1439 | DPRINTF("handle_mmio\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1440 | cpu_physical_memory_rw(run->mmio.phys_addr, |
| 1441 | run->mmio.data, |
| 1442 | run->mmio.len, |
| 1443 | run->mmio.is_write); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1444 | ret = 0; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1445 | break; |
| 1446 | case KVM_EXIT_IRQ_WINDOW_OPEN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1447 | DPRINTF("irq_window_open\n"); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1448 | ret = EXCP_INTERRUPT; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1449 | break; |
| 1450 | case KVM_EXIT_SHUTDOWN: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1451 | DPRINTF("shutdown\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1452 | qemu_system_reset_request(); |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1453 | ret = EXCP_INTERRUPT; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1454 | break; |
| 1455 | case KVM_EXIT_UNKNOWN: |
Jan Kiszka | bb44e0d | 2011-01-21 21:48:07 +0100 | [diff] [blame] | 1456 | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
| 1457 | (uint64_t)run->hw.hardware_exit_reason); |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1458 | ret = -1; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1459 | break; |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1460 | case KVM_EXIT_INTERNAL_ERROR: |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1461 | ret = kvm_handle_internal_error(env, run); |
Marcelo Tosatti | 7c80eef | 2010-03-23 13:37:11 -0300 | [diff] [blame] | 1462 | break; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1463 | default: |
Blue Swirl | 8c0d577 | 2010-04-18 14:22:14 +0000 | [diff] [blame] | 1464 | DPRINTF("kvm_arch_handle_exit\n"); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1465 | ret = kvm_arch_handle_exit(env, run); |
| 1466 | break; |
| 1467 | } |
Jan Kiszka | d73cd8f | 2011-03-15 12:26:27 +0100 | [diff] [blame] | 1468 | } while (ret == 0); |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1469 | |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1470 | if (ret < 0) { |
Jan Kiszka | f5c848e | 2011-01-21 21:48:08 +0100 | [diff] [blame] | 1471 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); |
Luiz Capitulino | 0461d5a | 2011-09-30 14:45:27 -0300 | [diff] [blame] | 1472 | vm_stop(RUN_STATE_INTERNAL_ERROR); |
Jan Kiszka | 73aaec4 | 2011-01-21 21:48:06 +0100 | [diff] [blame] | 1473 | } |
aliguori | becfc39 | 2008-11-10 15:55:14 +0000 | [diff] [blame] | 1474 | |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 1475 | env->exit_request = 0; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1476 | return ret; |
| 1477 | } |
| 1478 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1479 | int kvm_ioctl(KVMState *s, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1480 | { |
| 1481 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1482 | void *arg; |
| 1483 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1484 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1485 | va_start(ap, type); |
| 1486 | arg = va_arg(ap, void *); |
| 1487 | va_end(ap); |
| 1488 | |
| 1489 | ret = ioctl(s->fd, type, arg); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1490 | if (ret == -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1491 | ret = -errno; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1492 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1493 | return ret; |
| 1494 | } |
| 1495 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1496 | int kvm_vm_ioctl(KVMState *s, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1497 | { |
| 1498 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1499 | void *arg; |
| 1500 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1501 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1502 | va_start(ap, type); |
| 1503 | arg = va_arg(ap, void *); |
| 1504 | va_end(ap); |
| 1505 | |
| 1506 | ret = ioctl(s->vmfd, type, arg); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1507 | if (ret == -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1508 | ret = -errno; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1509 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1510 | return ret; |
| 1511 | } |
| 1512 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1513 | int kvm_vcpu_ioctl(CPUArchState *env, int type, ...) |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1514 | { |
| 1515 | int ret; |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1516 | void *arg; |
| 1517 | va_list ap; |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1518 | |
aliguori | 984b518 | 2008-11-13 19:21:00 +0000 | [diff] [blame] | 1519 | va_start(ap, type); |
| 1520 | arg = va_arg(ap, void *); |
| 1521 | va_end(ap); |
| 1522 | |
| 1523 | ret = ioctl(env->kvm_fd, type, arg); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1524 | if (ret == -1) { |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1525 | ret = -errno; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1526 | } |
aliguori | 0533044 | 2008-11-05 16:29:27 +0000 | [diff] [blame] | 1527 | return ret; |
| 1528 | } |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1529 | |
| 1530 | int kvm_has_sync_mmu(void) |
| 1531 | { |
Jan Kiszka | 94a8d39 | 2011-01-21 21:48:17 +0100 | [diff] [blame] | 1532 | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU); |
aliguori | bd32208 | 2008-12-04 20:33:06 +0000 | [diff] [blame] | 1533 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1534 | |
Jan Kiszka | a0fb002 | 2009-11-25 00:33:03 +0100 | [diff] [blame] | 1535 | int kvm_has_vcpu_events(void) |
| 1536 | { |
| 1537 | return kvm_state->vcpu_events; |
| 1538 | } |
| 1539 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1540 | int kvm_has_robust_singlestep(void) |
| 1541 | { |
| 1542 | return kvm_state->robust_singlestep; |
| 1543 | } |
| 1544 | |
Jan Kiszka | ff44f1a | 2010-03-12 15:20:49 +0100 | [diff] [blame] | 1545 | int kvm_has_debugregs(void) |
| 1546 | { |
| 1547 | return kvm_state->debugregs; |
| 1548 | } |
| 1549 | |
Sheng Yang | f1665b2 | 2010-06-17 17:53:07 +0800 | [diff] [blame] | 1550 | int kvm_has_xsave(void) |
| 1551 | { |
| 1552 | return kvm_state->xsave; |
| 1553 | } |
| 1554 | |
| 1555 | int kvm_has_xcrs(void) |
| 1556 | { |
| 1557 | return kvm_state->xcrs; |
| 1558 | } |
| 1559 | |
Jan Kiszka | 8a7c739 | 2012-03-02 20:28:48 +0100 | [diff] [blame] | 1560 | int kvm_has_pit_state2(void) |
| 1561 | { |
| 1562 | return kvm_state->pit_state2; |
| 1563 | } |
| 1564 | |
Stefan Hajnoczi | d2f2b8a | 2011-01-10 13:50:05 +0200 | [diff] [blame] | 1565 | int kvm_has_many_ioeventfds(void) |
| 1566 | { |
| 1567 | if (!kvm_enabled()) { |
| 1568 | return 0; |
| 1569 | } |
| 1570 | return kvm_state->many_ioeventfds; |
| 1571 | } |
| 1572 | |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1573 | int kvm_has_gsi_routing(void) |
| 1574 | { |
Alexander Graf | a9c5eb0 | 2012-01-25 18:28:05 +0100 | [diff] [blame] | 1575 | #ifdef KVM_CAP_IRQ_ROUTING |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1576 | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING); |
Alexander Graf | a9c5eb0 | 2012-01-25 18:28:05 +0100 | [diff] [blame] | 1577 | #else |
| 1578 | return false; |
| 1579 | #endif |
Jan Kiszka | 84b058d | 2011-10-15 11:49:47 +0200 | [diff] [blame] | 1580 | } |
| 1581 | |
Jan Kiszka | 9b5b76d | 2011-10-15 14:08:26 +0200 | [diff] [blame] | 1582 | int kvm_allows_irq0_override(void) |
| 1583 | { |
Jan Kiszka | 3d4b264 | 2012-01-31 19:17:52 +0100 | [diff] [blame] | 1584 | return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing(); |
Jan Kiszka | 9b5b76d | 2011-10-15 14:08:26 +0200 | [diff] [blame] | 1585 | } |
| 1586 | |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1587 | void kvm_setup_guest_memory(void *start, size_t size) |
| 1588 | { |
| 1589 | if (!kvm_has_sync_mmu()) { |
Andreas Färber | e78815a | 2010-09-25 11:26:05 +0000 | [diff] [blame] | 1590 | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK); |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1591 | |
| 1592 | if (ret) { |
Andreas Färber | e78815a | 2010-09-25 11:26:05 +0000 | [diff] [blame] | 1593 | perror("qemu_madvise"); |
| 1594 | fprintf(stderr, |
| 1595 | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n"); |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1596 | exit(1); |
| 1597 | } |
Jan Kiszka | 6f0437e | 2009-04-26 18:03:40 +0200 | [diff] [blame] | 1598 | } |
| 1599 | } |
| 1600 | |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1601 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1602 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1603 | target_ulong pc) |
| 1604 | { |
| 1605 | struct kvm_sw_breakpoint *bp; |
| 1606 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1607 | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1608 | if (bp->pc == pc) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1609 | return bp; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1610 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1611 | } |
| 1612 | return NULL; |
| 1613 | } |
| 1614 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1615 | int kvm_sw_breakpoints_active(CPUArchState *env) |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1616 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1617 | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1618 | } |
| 1619 | |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1620 | struct kvm_set_guest_debug_data { |
| 1621 | struct kvm_guest_debug dbg; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1622 | CPUArchState *env; |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1623 | int err; |
| 1624 | }; |
| 1625 | |
| 1626 | static void kvm_invoke_set_guest_debug(void *data) |
| 1627 | { |
| 1628 | struct kvm_set_guest_debug_data *dbg_data = data; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1629 | CPUArchState *env = dbg_data->env; |
Jan Kiszka | b380772 | 2009-09-17 20:05:58 +0200 | [diff] [blame] | 1630 | |
Jan Kiszka | b380772 | 2009-09-17 20:05:58 +0200 | [diff] [blame] | 1631 | 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] | 1632 | } |
| 1633 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1634 | int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap) |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1635 | { |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1636 | struct kvm_set_guest_debug_data data; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1637 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1638 | data.dbg.control = reinject_trap; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1639 | |
Jan Kiszka | b0b1d69 | 2010-03-01 19:10:29 +0100 | [diff] [blame] | 1640 | if (env->singlestep_enabled) { |
| 1641 | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
| 1642 | } |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1643 | kvm_arch_update_guest_debug(env, &data.dbg); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1644 | data.env = env; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1645 | |
Jan Kiszka | be41cbe | 2010-05-20 00:28:45 +0200 | [diff] [blame] | 1646 | run_on_cpu(env, kvm_invoke_set_guest_debug, &data); |
Glauber Costa | 452e475 | 2009-07-16 17:55:28 -0400 | [diff] [blame] | 1647 | return data.err; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1648 | } |
| 1649 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1650 | int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1651 | target_ulong len, int type) |
| 1652 | { |
| 1653 | struct kvm_sw_breakpoint *bp; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1654 | CPUArchState *env; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1655 | int err; |
| 1656 | |
| 1657 | if (type == GDB_BREAKPOINT_SW) { |
| 1658 | bp = kvm_find_sw_breakpoint(current_env, addr); |
| 1659 | if (bp) { |
| 1660 | bp->use_count++; |
| 1661 | return 0; |
| 1662 | } |
| 1663 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1664 | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1665 | if (!bp) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1666 | return -ENOMEM; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1667 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1668 | |
| 1669 | bp->pc = addr; |
| 1670 | bp->use_count = 1; |
| 1671 | err = kvm_arch_insert_sw_breakpoint(current_env, bp); |
| 1672 | if (err) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1673 | g_free(bp); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1674 | return err; |
| 1675 | } |
| 1676 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1677 | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1678 | bp, entry); |
| 1679 | } else { |
| 1680 | err = kvm_arch_insert_hw_breakpoint(addr, len, type); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1681 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1682 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1683 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1684 | } |
| 1685 | |
| 1686 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1687 | err = kvm_update_guest_debug(env, 0); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1688 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1689 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1690 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1691 | } |
| 1692 | return 0; |
| 1693 | } |
| 1694 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1695 | int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1696 | target_ulong len, int type) |
| 1697 | { |
| 1698 | struct kvm_sw_breakpoint *bp; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1699 | CPUArchState *env; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1700 | int err; |
| 1701 | |
| 1702 | if (type == GDB_BREAKPOINT_SW) { |
| 1703 | bp = kvm_find_sw_breakpoint(current_env, addr); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1704 | if (!bp) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1705 | return -ENOENT; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1706 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1707 | |
| 1708 | if (bp->use_count > 1) { |
| 1709 | bp->use_count--; |
| 1710 | return 0; |
| 1711 | } |
| 1712 | |
| 1713 | err = kvm_arch_remove_sw_breakpoint(current_env, bp); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1714 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1715 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1716 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1717 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1718 | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1719 | g_free(bp); |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1720 | } else { |
| 1721 | err = kvm_arch_remove_hw_breakpoint(addr, len, type); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1722 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1723 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1724 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1725 | } |
| 1726 | |
| 1727 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1728 | err = kvm_update_guest_debug(env, 0); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1729 | if (err) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1730 | return err; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1731 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1732 | } |
| 1733 | return 0; |
| 1734 | } |
| 1735 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1736 | void kvm_remove_all_breakpoints(CPUArchState *current_env) |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1737 | { |
| 1738 | struct kvm_sw_breakpoint *bp, *next; |
| 1739 | KVMState *s = current_env->kvm_state; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1740 | CPUArchState *env; |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1741 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1742 | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1743 | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
| 1744 | /* Try harder to find a CPU that currently sees the breakpoint. */ |
| 1745 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1746 | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1747 | break; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1748 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1749 | } |
| 1750 | } |
| 1751 | } |
| 1752 | kvm_arch_remove_all_hw_breakpoints(); |
| 1753 | |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1754 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1755 | kvm_update_guest_debug(env, 0); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1756 | } |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1757 | } |
| 1758 | |
| 1759 | #else /* !KVM_CAP_SET_GUEST_DEBUG */ |
| 1760 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1761 | int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap) |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1762 | { |
| 1763 | return -EINVAL; |
| 1764 | } |
| 1765 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1766 | int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1767 | target_ulong len, int type) |
| 1768 | { |
| 1769 | return -EINVAL; |
| 1770 | } |
| 1771 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1772 | int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr, |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1773 | target_ulong len, int type) |
| 1774 | { |
| 1775 | return -EINVAL; |
| 1776 | } |
| 1777 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1778 | void kvm_remove_all_breakpoints(CPUArchState *current_env) |
aliguori | e22a25c | 2009-03-12 20:12:48 +0000 | [diff] [blame] | 1779 | { |
| 1780 | } |
| 1781 | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1782 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1783 | int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset) |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1784 | { |
| 1785 | struct kvm_signal_mask *sigmask; |
| 1786 | int r; |
| 1787 | |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1788 | if (!sigset) { |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1789 | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1790 | } |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1791 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1792 | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1793 | |
| 1794 | sigmask->len = 8; |
| 1795 | memcpy(sigmask->sigset, sigset, sizeof(*sigset)); |
| 1796 | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1797 | g_free(sigmask); |
Marcelo Tosatti | cc84de9 | 2010-02-17 20:14:42 -0200 | [diff] [blame] | 1798 | |
| 1799 | return r; |
| 1800 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1801 | |
Michael S. Tsirkin | 4b8f1c8 | 2012-03-20 14:31:38 +0200 | [diff] [blame] | 1802 | int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val, bool assign, |
| 1803 | uint32_t size) |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1804 | { |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1805 | int ret; |
| 1806 | struct kvm_ioeventfd iofd; |
| 1807 | |
| 1808 | iofd.datamatch = val; |
| 1809 | iofd.addr = addr; |
Michael S. Tsirkin | 4b8f1c8 | 2012-03-20 14:31:38 +0200 | [diff] [blame] | 1810 | iofd.len = size; |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1811 | iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; |
| 1812 | iofd.fd = fd; |
| 1813 | |
| 1814 | if (!kvm_enabled()) { |
| 1815 | return -ENOSYS; |
| 1816 | } |
| 1817 | |
| 1818 | if (!assign) { |
| 1819 | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
| 1820 | } |
| 1821 | |
| 1822 | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); |
| 1823 | |
| 1824 | if (ret < 0) { |
| 1825 | return -errno; |
| 1826 | } |
| 1827 | |
| 1828 | return 0; |
Cam Macdonell | 44f1a3d | 2010-07-26 18:10:59 -0600 | [diff] [blame] | 1829 | } |
| 1830 | |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1831 | int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) |
| 1832 | { |
| 1833 | struct kvm_ioeventfd kick = { |
| 1834 | .datamatch = val, |
| 1835 | .addr = addr, |
| 1836 | .len = 2, |
| 1837 | .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO, |
| 1838 | .fd = fd, |
| 1839 | }; |
| 1840 | int r; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1841 | if (!kvm_enabled()) { |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1842 | return -ENOSYS; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1843 | } |
| 1844 | if (!assign) { |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1845 | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1846 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1847 | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1848 | if (r < 0) { |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1849 | return r; |
Jan Kiszka | a426e12 | 2011-01-04 09:32:13 +0100 | [diff] [blame] | 1850 | } |
Michael S. Tsirkin | ca82180 | 2010-03-17 13:07:54 +0200 | [diff] [blame] | 1851 | return 0; |
Paolo Bonzini | 98c8573 | 2010-04-19 18:59:30 +0000 | [diff] [blame] | 1852 | } |
Jan Kiszka | a1b87fe | 2011-02-01 22:15:51 +0100 | [diff] [blame] | 1853 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1854 | int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr) |
Jan Kiszka | a1b87fe | 2011-02-01 22:15:51 +0100 | [diff] [blame] | 1855 | { |
| 1856 | return kvm_arch_on_sigbus_vcpu(env, code, addr); |
| 1857 | } |
| 1858 | |
| 1859 | int kvm_on_sigbus(int code, void *addr) |
| 1860 | { |
| 1861 | return kvm_arch_on_sigbus(code, addr); |
| 1862 | } |