diff options
Diffstat (limited to 'target-i386/kvm.c')
| -rw-r--r-- | target-i386/kvm.c | 151 |
1 files changed, 138 insertions, 13 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 6426600c63..9038bf7077 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -22,7 +22,7 @@ #include "qemu-common.h" #include "sysemu/sysemu.h" -#include "sysemu/kvm.h" +#include "sysemu/kvm_int.h" #include "kvm_i386.h" #include "cpu.h" #include "exec/gdbstub.h" @@ -73,6 +73,7 @@ static bool has_msr_feature_control; static bool has_msr_async_pf_en; static bool has_msr_pv_eoi_en; static bool has_msr_misc_enable; +static bool has_msr_smbase; static bool has_msr_bndcfgs; static bool has_msr_kvm_steal_time; static int lm_capable_kernel; @@ -85,6 +86,11 @@ static bool has_msr_xss; static bool has_msr_architectural_pmu; static uint32_t num_architectural_pmu_counters; +bool kvm_has_smm(void) +{ + return kvm_check_extension(kvm_state, KVM_CAP_X86_SMM); +} + bool kvm_allows_irq0_override(void) { return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing(); @@ -819,6 +825,10 @@ static int kvm_get_supported_msrs(KVMState *s) has_msr_tsc_deadline = true; continue; } + if (kvm_msr_list->indices[i] == MSR_IA32_SMBASE) { + has_msr_smbase = true; + continue; + } if (kvm_msr_list->indices[i] == MSR_IA32_MISC_ENABLE) { has_msr_misc_enable = true; continue; @@ -840,6 +850,40 @@ static int kvm_get_supported_msrs(KVMState *s) return ret; } +static Notifier smram_machine_done; +static KVMMemoryListener smram_listener; +static AddressSpace smram_address_space; +static MemoryRegion smram_as_root; +static MemoryRegion smram_as_mem; + +static void register_smram_listener(Notifier *n, void *unused) +{ + MemoryRegion *smram = + (MemoryRegion *) object_resolve_path("/machine/smram", NULL); + + /* Outer container... */ + memory_region_init(&smram_as_root, OBJECT(kvm_state), "mem-container-smram", ~0ull); + memory_region_set_enabled(&smram_as_root, true); + + /* ... with two regions inside: normal system memory with low + * priority, and... + */ + memory_region_init_alias(&smram_as_mem, OBJECT(kvm_state), "mem-smram", + get_system_memory(), 0, ~0ull); + memory_region_add_subregion_overlap(&smram_as_root, 0, &smram_as_mem, 0); + memory_region_set_enabled(&smram_as_mem, true); + + if (smram) { + /* ... SMRAM with higher priority */ + memory_region_add_subregion_overlap(&smram_as_root, 0, smram, 10); + memory_region_set_enabled(smram, true); + } + + address_space_init(&smram_address_space, &smram_as_root, "KVM-SMRAM"); + kvm_memory_listener_register(kvm_state, &smram_listener, + &smram_address_space, 1); +} + int kvm_arch_init(MachineState *ms, KVMState *s) { uint64_t identity_base = 0xfffbc000; @@ -898,6 +942,11 @@ int kvm_arch_init(MachineState *ms, KVMState *s) return ret; } } + + if (kvm_check_extension(s, KVM_CAP_X86_SMM)) { + smram_machine_done.notify = register_smram_listener; + qemu_add_machine_init_done_notifier(&smram_machine_done); + } return 0; } @@ -1245,6 +1294,9 @@ static int kvm_put_msrs(X86CPU *cpu, int level) kvm_msr_entry_set(&msrs[n++], MSR_IA32_MISC_ENABLE, env->msr_ia32_misc_enable); } + if (has_msr_smbase) { + kvm_msr_entry_set(&msrs[n++], MSR_IA32_SMBASE, env->smbase); + } if (has_msr_bndcfgs) { kvm_msr_entry_set(&msrs[n++], MSR_IA32_BNDCFGS, env->msr_bndcfgs); } @@ -1606,6 +1658,9 @@ static int kvm_get_msrs(X86CPU *cpu) if (has_msr_misc_enable) { msrs[n++].index = MSR_IA32_MISC_ENABLE; } + if (has_msr_smbase) { + msrs[n++].index = MSR_IA32_SMBASE; + } if (has_msr_feature_control) { msrs[n++].index = MSR_IA32_FEATURE_CONTROL; } @@ -1760,6 +1815,9 @@ static int kvm_get_msrs(X86CPU *cpu) case MSR_IA32_MISC_ENABLE: env->msr_ia32_misc_enable = msrs[i].data; break; + case MSR_IA32_SMBASE: + env->smbase = msrs[i].data; + break; case MSR_IA32_FEATURE_CONTROL: env->msr_ia32_feature_control = msrs[i].data; break; @@ -1923,6 +1981,7 @@ static int kvm_put_apic(X86CPU *cpu) static int kvm_put_vcpu_events(X86CPU *cpu, int level) { + CPUState *cs = CPU(cpu); CPUX86State *env = &cpu->env; struct kvm_vcpu_events events = {}; @@ -1947,6 +2006,24 @@ static int kvm_put_vcpu_events(X86CPU *cpu, int level) events.sipi_vector = env->sipi_vector; + if (has_msr_smbase) { + events.smi.smm = !!(env->hflags & HF_SMM_MASK); + events.smi.smm_inside_nmi = !!(env->hflags2 & HF2_SMM_INSIDE_NMI_MASK); + if (kvm_irqchip_in_kernel()) { + /* As soon as these are moved to the kernel, remove them + * from cs->interrupt_request. + */ + events.smi.pending = cs->interrupt_request & CPU_INTERRUPT_SMI; + events.smi.latched_init = cs->interrupt_request & CPU_INTERRUPT_INIT; + cs->interrupt_request &= ~(CPU_INTERRUPT_INIT | CPU_INTERRUPT_SMI); + } else { + /* Keep these in cs->interrupt_request. */ + events.smi.pending = 0; + events.smi.latched_init = 0; + } + events.flags |= KVM_VCPUEVENT_VALID_SMM; + } + events.flags = 0; if (level >= KVM_PUT_RESET_STATE) { events.flags |= @@ -1966,6 +2043,7 @@ static int kvm_get_vcpu_events(X86CPU *cpu) return 0; } + memset(&events, 0, sizeof(events)); ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_VCPU_EVENTS, &events); if (ret < 0) { return ret; @@ -1987,6 +2065,29 @@ static int kvm_get_vcpu_events(X86CPU *cpu) env->hflags2 &= ~HF2_NMI_MASK; } + if (events.flags & KVM_VCPUEVENT_VALID_SMM) { + if (events.smi.smm) { + env->hflags |= HF_SMM_MASK; + } else { + env->hflags &= ~HF_SMM_MASK; + } + if (events.smi.pending) { + cpu_interrupt(CPU(cpu), CPU_INTERRUPT_SMI); + } else { + cpu_reset_interrupt(CPU(cpu), CPU_INTERRUPT_SMI); + } + if (events.smi.smm_inside_nmi) { + env->hflags2 |= HF2_SMM_INSIDE_NMI_MASK; + } else { + env->hflags2 &= ~HF2_SMM_INSIDE_NMI_MASK; + } + if (events.smi.latched_init) { + cpu_interrupt(CPU(cpu), CPU_INTERRUPT_INIT); + } else { + cpu_reset_interrupt(CPU(cpu), CPU_INTERRUPT_INIT); + } + } + env->sipi_vector = events.sipi_vector; return 0; @@ -2190,16 +2291,28 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run) int ret; /* Inject NMI */ - if (cpu->interrupt_request & CPU_INTERRUPT_NMI) { - qemu_mutex_lock_iothread(); - cpu->interrupt_request &= ~CPU_INTERRUPT_NMI; - qemu_mutex_unlock_iothread(); - - DPRINTF("injected NMI\n"); - ret = kvm_vcpu_ioctl(cpu, KVM_NMI); - if (ret < 0) { - fprintf(stderr, "KVM: injection failed, NMI lost (%s)\n", - strerror(-ret)); + if (cpu->interrupt_request & (CPU_INTERRUPT_NMI | CPU_INTERRUPT_SMI)) { + if (cpu->interrupt_request & CPU_INTERRUPT_NMI) { + qemu_mutex_lock_iothread(); + cpu->interrupt_request &= ~CPU_INTERRUPT_NMI; + qemu_mutex_unlock_iothread(); + DPRINTF("injected NMI\n"); + ret = kvm_vcpu_ioctl(cpu, KVM_NMI); + if (ret < 0) { + fprintf(stderr, "KVM: injection failed, NMI lost (%s)\n", + strerror(-ret)); + } + } + if (cpu->interrupt_request & CPU_INTERRUPT_SMI) { + qemu_mutex_lock_iothread(); + cpu->interrupt_request &= ~CPU_INTERRUPT_SMI; + qemu_mutex_unlock_iothread(); + DPRINTF("injected SMI\n"); + ret = kvm_vcpu_ioctl(cpu, KVM_SMI); + if (ret < 0) { + fprintf(stderr, "KVM: injection failed, SMI lost (%s)\n", + strerror(-ret)); + } } } @@ -2212,7 +2325,13 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run) * pending TPR access reports. */ if (cpu->interrupt_request & (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) { - cpu->exit_request = 1; + if ((cpu->interrupt_request & CPU_INTERRUPT_INIT) && + !(env->hflags & HF_SMM_MASK)) { + cpu->exit_request = 1; + } + if (cpu->interrupt_request & CPU_INTERRUPT_TPR) { + cpu->exit_request = 1; + } } if (!kvm_irqchip_in_kernel()) { @@ -2260,6 +2379,11 @@ MemTxAttrs kvm_arch_post_run(CPUState *cpu, struct kvm_run *run) X86CPU *x86_cpu = X86_CPU(cpu); CPUX86State *env = &x86_cpu->env; + if (run->flags & KVM_RUN_X86_SMM) { + env->hflags |= HF_SMM_MASK; + } else { + env->hflags &= HF_SMM_MASK; + } if (run->if_flag) { env->eflags |= IF_MASK; } else { @@ -2307,7 +2431,8 @@ int kvm_arch_process_async_events(CPUState *cs) } } - if (cs->interrupt_request & CPU_INTERRUPT_INIT) { + if ((cs->interrupt_request & CPU_INTERRUPT_INIT) && + !(env->hflags & HF_SMM_MASK)) { kvm_cpu_synchronize_state(cs); do_cpu_init(cpu); } |