diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/i386/cpu.c | 4 | ||||
| -rw-r--r-- | target/i386/cpu.h | 1 | ||||
| -rw-r--r-- | target/i386/kvm.c | 14 | ||||
| -rw-r--r-- | target/i386/machine.c | 20 |
4 files changed, 38 insertions, 1 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index ff65e11008..69cef4076a 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -906,7 +906,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "kvmclock", "kvm-nopiodelay", "kvm-mmu", "kvmclock", "kvm-asyncpf", "kvm-steal-time", "kvm-pv-eoi", "kvm-pv-unhalt", NULL, "kvm-pv-tlb-flush", NULL, "kvm-pv-ipi", - NULL, NULL, NULL, NULL, + "kvm-poll-control", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "kvmclock-stable-bit", NULL, NULL, NULL, @@ -5660,6 +5660,8 @@ static void x86_cpu_initfn(Object *obj) object_property_add_alias(obj, "kvm_steal_time", obj, "kvm-steal-time", &error_abort); object_property_add_alias(obj, "kvm_pv_eoi", obj, "kvm-pv-eoi", &error_abort); object_property_add_alias(obj, "kvm_pv_unhalt", obj, "kvm-pv-unhalt", &error_abort); + object_property_add_alias(obj, "kvm_poll_control", obj, "kvm-poll-control", + &error_abort); object_property_add_alias(obj, "svm_lock", obj, "svm-lock", &error_abort); object_property_add_alias(obj, "nrip_save", obj, "nrip-save", &error_abort); object_property_add_alias(obj, "tsc_scale", obj, "tsc-scale", &error_abort); diff --git a/target/i386/cpu.h b/target/i386/cpu.h index ecd0ec0899..6c95447005 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1260,6 +1260,7 @@ typedef struct CPUX86State { uint64_t steal_time_msr; uint64_t async_pf_en_msr; uint64_t pv_eoi_en_msr; + uint64_t poll_control_msr; /* Partition-wide HV MSRs, will be updated only on the first vcpu */ uint64_t msr_hv_hypercall; diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 2abc881324..8dc7026b0d 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1785,6 +1785,8 @@ void kvm_arch_reset_vcpu(X86CPU *cpu) hyperv_x86_synic_reset(cpu); } + /* enabled by default */ + env->poll_control_msr = 1; } void kvm_arch_do_init_vcpu(X86CPU *cpu) @@ -2493,6 +2495,11 @@ static int kvm_put_msrs(X86CPU *cpu, int level) if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_STEAL_TIME)) { kvm_msr_entry_add(cpu, MSR_KVM_STEAL_TIME, env->steal_time_msr); } + + if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_POLL_CONTROL)) { + kvm_msr_entry_add(cpu, MSR_KVM_POLL_CONTROL, env->poll_control_msr); + } + if (has_architectural_pmu_version > 0) { if (has_architectural_pmu_version > 1) { /* Stop the counter. */ @@ -2878,6 +2885,9 @@ static int kvm_get_msrs(X86CPU *cpu) if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_STEAL_TIME)) { kvm_msr_entry_add(cpu, MSR_KVM_STEAL_TIME, 0); } + if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_POLL_CONTROL)) { + kvm_msr_entry_add(cpu, MSR_KVM_POLL_CONTROL, 1); + } if (has_architectural_pmu_version > 0) { if (has_architectural_pmu_version > 1) { kvm_msr_entry_add(cpu, MSR_CORE_PERF_FIXED_CTR_CTRL, 0); @@ -3112,6 +3122,10 @@ static int kvm_get_msrs(X86CPU *cpu) case MSR_KVM_STEAL_TIME: env->steal_time_msr = msrs[i].data; break; + case MSR_KVM_POLL_CONTROL: { + env->poll_control_msr = msrs[i].data; + break; + } case MSR_CORE_PERF_FIXED_CTR_CTRL: env->msr_fixed_ctr_ctrl = msrs[i].data; break; diff --git a/target/i386/machine.c b/target/i386/machine.c index ce55755f0f..2767b3096d 100644 --- a/target/i386/machine.c +++ b/target/i386/machine.c @@ -437,6 +437,14 @@ static const VMStateDescription vmstate_exception_info = { } }; +/* Poll control MSR enabled by default */ +static bool poll_control_msr_needed(void *opaque) +{ + X86CPU *cpu = opaque; + + return cpu->env.poll_control_msr != 1; +} + static const VMStateDescription vmstate_steal_time_msr = { .name = "cpu/steal_time_msr", .version_id = 1, @@ -470,6 +478,17 @@ static const VMStateDescription vmstate_pv_eoi_msr = { } }; +static const VMStateDescription vmstate_poll_control_msr = { + .name = "cpu/poll_control_msr", + .version_id = 1, + .minimum_version_id = 1, + .needed = poll_control_msr_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64(env.poll_control_msr, X86CPU), + VMSTATE_END_OF_LIST() + } +}; + static bool fpop_ip_dp_needed(void *opaque) { X86CPU *cpu = opaque; @@ -1354,6 +1373,7 @@ VMStateDescription vmstate_x86_cpu = { &vmstate_async_pf_msr, &vmstate_pv_eoi_msr, &vmstate_steal_time_msr, + &vmstate_poll_control_msr, &vmstate_fpop_ip_dp, &vmstate_msr_tsc_adjust, &vmstate_msr_tscdeadline, |