diff options
Diffstat (limited to 'kvm-all.c')
| -rw-r--r-- | kvm-all.c | 89 |
1 files changed, 50 insertions, 39 deletions
diff --git a/kvm-all.c b/kvm-all.c index 2ec9e0980d..e6a7de4722 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -78,7 +78,7 @@ struct KVMState int many_ioeventfds; }; -static KVMState *kvm_state; +KVMState *kvm_state; static const KVMCapabilityInfo kvm_required_capabilites[] = { KVM_CAP_INFO(USER_MEMORY), @@ -91,10 +91,6 @@ static KVMSlot *kvm_alloc_slot(KVMState *s) int i; for (i = 0; i < ARRAY_SIZE(s->slots); i++) { - /* KVM private memory slots */ - if (i >= 8 && i < 12) { - continue; - } if (s->slots[i].memory_size == 0) { return &s->slots[i]; } @@ -199,7 +195,6 @@ int kvm_pit_in_kernel(void) return kvm_state->pit_in_kernel; } - int kvm_init_vcpu(CPUState *env) { KVMState *s = kvm_state; @@ -219,6 +214,7 @@ int kvm_init_vcpu(CPUState *env) mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); if (mmap_size < 0) { + ret = mmap_size; DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); goto err; } @@ -278,13 +274,15 @@ static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, return kvm_set_user_memory_region(s, mem); } -int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size) +static int kvm_log_start(CPUPhysMemoryClient *client, + target_phys_addr_t phys_addr, ram_addr_t size) { return kvm_dirty_pages_log_change(phys_addr, size, KVM_MEM_LOG_DIRTY_PAGES, KVM_MEM_LOG_DIRTY_PAGES); } -int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size) +static int kvm_log_stop(CPUPhysMemoryClient *client, + target_phys_addr_t phys_addr, ram_addr_t size) { return kvm_dirty_pages_log_change(phys_addr, size, 0, KVM_MEM_LOG_DIRTY_PAGES); @@ -648,6 +646,8 @@ static CPUPhysMemoryClient kvm_cpu_phys_memory_client = { .set_memory = kvm_client_set_memory, .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap, .migration_log = kvm_client_migration_log, + .log_start = kvm_log_start, + .log_stop = kvm_log_stop, }; int kvm_init(void) @@ -774,8 +774,8 @@ err: return ret; } -static int kvm_handle_io(uint16_t port, void *data, int direction, int size, - uint32_t count) +static void kvm_handle_io(uint16_t port, void *data, int direction, int size, + uint32_t count) { int i; uint8_t *ptr = data; @@ -809,8 +809,6 @@ static int kvm_handle_io(uint16_t port, void *data, int direction, int size, ptr += size; } - - return 1; } #ifdef KVM_CAP_INTERNAL_ERROR_DATA @@ -895,29 +893,34 @@ int kvm_cpu_exec(CPUState *env) DPRINTF("kvm_cpu_exec()\n"); - do { -#ifndef CONFIG_IOTHREAD - if (env->exit_request) { - DPRINTF("interrupt exit requested\n"); - ret = 0; - break; - } -#endif + if (kvm_arch_process_irqchip_events(env)) { + env->exit_request = 0; + return EXCP_HLT; + } - if (kvm_arch_process_irqchip_events(env)) { - ret = 0; - break; - } + cpu_single_env = env; + do { if (env->kvm_vcpu_dirty) { kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); env->kvm_vcpu_dirty = 0; } kvm_arch_pre_run(env, run); + if (env->exit_request) { + DPRINTF("interrupt exit requested\n"); + /* + * KVM requires us to reenter the kernel after IO exits to complete + * instruction emulation. This self-signal will ensure that we + * leave ASAP again. + */ + qemu_cpu_kick_self(); + } cpu_single_env = NULL; qemu_mutex_unlock_iothread(); + ret = kvm_vcpu_ioctl(env, KVM_RUN, 0); + qemu_mutex_lock_iothread(); cpu_single_env = env; kvm_arch_post_run(env, run); @@ -925,7 +928,6 @@ int kvm_cpu_exec(CPUState *env) kvm_flush_coalesced_mmio_buffer(); if (ret == -EINTR || ret == -EAGAIN) { - cpu_exit(env); DPRINTF("io window exit\n"); ret = 0; break; @@ -940,11 +942,12 @@ int kvm_cpu_exec(CPUState *env) switch (run->exit_reason) { case KVM_EXIT_IO: DPRINTF("handle_io\n"); - ret = kvm_handle_io(run->io.port, - (uint8_t *)run + run->io.data_offset, - run->io.direction, - run->io.size, - run->io.count); + kvm_handle_io(run->io.port, + (uint8_t *)run + run->io.data_offset, + run->io.direction, + run->io.size, + run->io.count); + ret = 1; break; case KVM_EXIT_MMIO: DPRINTF("handle_mmio\n"); @@ -960,7 +963,6 @@ int kvm_cpu_exec(CPUState *env) case KVM_EXIT_SHUTDOWN: DPRINTF("shutdown\n"); qemu_system_reset_request(); - ret = 1; break; case KVM_EXIT_UNKNOWN: fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", @@ -976,8 +978,8 @@ int kvm_cpu_exec(CPUState *env) DPRINTF("kvm_exit_debug\n"); #ifdef KVM_CAP_SET_GUEST_DEBUG if (kvm_arch_debug(&run->debug.arch)) { - env->exception_index = EXCP_DEBUG; - return 0; + ret = EXCP_DEBUG; + goto out; } /* re-enter, this exception was guest-internal */ ret = 1; @@ -992,14 +994,13 @@ int kvm_cpu_exec(CPUState *env) if (ret < 0) { cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE); - vm_stop(0); - env->exit_request = 1; - } - if (env->exit_request) { - env->exit_request = 0; - env->exception_index = EXCP_INTERRUPT; + vm_stop(VMSTOP_PANIC); } + ret = EXCP_INTERRUPT; +out: + env->exit_request = 0; + cpu_single_env = NULL; return ret; } @@ -1365,3 +1366,13 @@ int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) return -ENOSYS; #endif } + +int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr) +{ + return kvm_arch_on_sigbus_vcpu(env, code, addr); +} + +int kvm_on_sigbus(int code, void *addr) +{ + return kvm_arch_on_sigbus(code, addr); +} |