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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-04-23 04:25:44 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 18:14:39 +0200 |
| commit | 1b660b6baaafd8b9056740b83decd7fc74023627 (patch) | |
| tree | 4adde4cc1d816a0f2007a51fb979ed156569f33d /arch/x86/kvm | |
| parent | KVM: nSVM: Move SMI vmexit handling to svm_check_nested_events() (diff) | |
| download | linux-1b660b6baaafd8b9056740b83decd7fc74023627.tar.xz linux-1b660b6baaafd8b9056740b83decd7fc74023627.zip | |
KVM: VMX: Split out architectural interrupt/NMI blocking checks
Move the architectural (non-KVM specific) interrupt/NMI blocking checks
to a separate helper so that they can be used in a future patch by
vmx_check_nested_events().
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200423022550.15113-8-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 35 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.h | 2 |
2 files changed, 24 insertions, 13 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index f688e6e876e8..a5140ed7dbf9 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -4510,21 +4510,35 @@ void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked) } } +bool vmx_nmi_blocked(struct kvm_vcpu *vcpu) +{ + if (is_guest_mode(vcpu) && nested_exit_on_nmi(vcpu)) + return false; + + if (!enable_vnmi && to_vmx(vcpu)->loaded_vmcs->soft_vnmi_blocked) + return true; + + return (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & + (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_STI | + GUEST_INTR_STATE_NMI)); +} + static bool vmx_nmi_allowed(struct kvm_vcpu *vcpu) { if (to_vmx(vcpu)->nested.nested_run_pending) return false; - if (is_guest_mode(vcpu) && nested_exit_on_nmi(vcpu)) - return true; + return !vmx_nmi_blocked(vcpu); +} - if (!enable_vnmi && - to_vmx(vcpu)->loaded_vmcs->soft_vnmi_blocked) +bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu) +{ + if (is_guest_mode(vcpu) && nested_exit_on_intr(vcpu)) return false; - return !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & - (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_STI - | GUEST_INTR_STATE_NMI)); + return !(vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) || + (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & + (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS)); } static bool vmx_interrupt_allowed(struct kvm_vcpu *vcpu) @@ -4532,12 +4546,7 @@ static bool vmx_interrupt_allowed(struct kvm_vcpu *vcpu) if (to_vmx(vcpu)->nested.nested_run_pending) return false; - if (is_guest_mode(vcpu) && nested_exit_on_intr(vcpu)) - return true; - - return (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) && - !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & - (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS)); + return !vmx_interrupt_blocked(vcpu); } static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr) diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index edfb739e5907..b5e773267abe 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -344,6 +344,8 @@ void vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa); void update_exception_bitmap(struct kvm_vcpu *vcpu); void vmx_update_msr_bitmap(struct kvm_vcpu *vcpu); +bool vmx_nmi_blocked(struct kvm_vcpu *vcpu); +bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu); bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu); void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked); void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu); |