From f1db3c1cb5d40140028ddae812bfa924ca247556 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 24 Apr 2020 15:09:45 +0200 Subject: [PATCH 2/2] WIP: ASYNC_PF_INT Signed-off-by: Vitaly Kuznetsov --- target/i386/cpu.c | 2 +- target/i386/cpu.h | 1 + target/i386/kvm.c | 10 ++++++++++ target/i386/machine.c | 19 +++++++++++++++++++ 4 files changed, 31 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 9c256ab15910..ea794f3f52b5 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -810,7 +810,7 @@ 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", - "kvm-poll-control", "kvm-pv-sched-yield", NULL, NULL, + "kvm-poll-control", "kvm-pv-sched-yield", "kvm-asyncpf-int", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "kvmclock-stable-bit", NULL, NULL, NULL, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index e818fc712aca..673e31e191cc 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1474,6 +1474,7 @@ typedef struct CPUX86State { uint64_t wall_clock_msr; uint64_t steal_time_msr; uint64_t async_pf_en_msr; + uint64_t async_pf_int_msr; uint64_t pv_eoi_en_msr; uint64_t poll_control_msr; diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 4901c6dd747d..d2b286f9dcb9 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -283,6 +283,7 @@ static const struct kvm_para_features { { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY }, { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP }, { KVM_CAP_ASYNC_PF, KVM_FEATURE_ASYNC_PF }, + { KVM_CAP_ASYNC_PF_INT, KVM_FEATURE_ASYNC_PF_INT }, }; static int get_para_features(KVMState *s) @@ -2798,6 +2799,9 @@ static int kvm_put_msrs(X86CPU *cpu, int level) if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, env->async_pf_en_msr); } + if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) { + kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, env->async_pf_int_msr); + } if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_PV_EOI)) { kvm_msr_entry_add(cpu, MSR_KVM_PV_EOI_EN, env->pv_eoi_en_msr); } @@ -3183,6 +3187,9 @@ static int kvm_get_msrs(X86CPU *cpu) if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, 0); } + if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) { + kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0); + } if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_PV_EOI)) { kvm_msr_entry_add(cpu, MSR_KVM_PV_EOI_EN, 0); } @@ -3423,6 +3430,9 @@ static int kvm_get_msrs(X86CPU *cpu) case MSR_KVM_ASYNC_PF_EN: env->async_pf_en_msr = msrs[i].data; break; + case MSR_KVM_ASYNC_PF_INT: + env->async_pf_int_msr = msrs[i].data; + break; case MSR_KVM_PV_EOI_EN: env->pv_eoi_en_msr = msrs[i].data; break; diff --git a/target/i386/machine.c b/target/i386/machine.c index 0c96531a56f0..dc124cf57de7 100644 --- a/target/i386/machine.c +++ b/target/i386/machine.c @@ -394,6 +394,13 @@ static bool async_pf_msr_needed(void *opaque) return cpu->env.async_pf_en_msr != 0; } +static bool async_pf_int_msr_needed(void *opaque) +{ + X86CPU *cpu = opaque; + + return cpu->env.async_pf_int_msr != 0; +} + static bool pv_eoi_msr_needed(void *opaque) { X86CPU *cpu = opaque; @@ -467,6 +474,17 @@ static const VMStateDescription vmstate_async_pf_msr = { } }; +static const VMStateDescription vmstate_async_pf_int_msr = { + .name = "cpu/async_pf_int_msr", + .version_id = 1, + .minimum_version_id = 1, + .needed = async_pf_int_msr_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64(env.async_pf_int_msr, X86CPU), + VMSTATE_END_OF_LIST() + } +}; + static const VMStateDescription vmstate_pv_eoi_msr = { .name = "cpu/async_pv_eoi_msr", .version_id = 1, @@ -1409,6 +1427,7 @@ VMStateDescription vmstate_x86_cpu = { .subsections = (const VMStateDescription*[]) { &vmstate_exception_info, &vmstate_async_pf_msr, + &vmstate_async_pf_int_msr, &vmstate_pv_eoi_msr, &vmstate_steal_time_msr, &vmstate_poll_control_msr, -- 2.25.4