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| author | Sean Christopherson <seanjc@google.com> | 2024-06-07 19:26:06 +0200 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-06-28 17:59:05 +0200 |
| commit | 322a569c4b4188a0da2812f9e952780ce09b74ba (patch) | |
| tree | cde3bac52e2274f9a378d245adddd9822d7d260d | |
| parent | KVM: nVMX: Request immediate exit iff pending nested event needs injection (diff) | |
| download | linux-322a569c4b4188a0da2812f9e952780ce09b74ba.tar.xz linux-322a569c4b4188a0da2812f9e952780ce09b74ba.zip | |
KVM: VMX: Split out the non-virtualization part of vmx_interrupt_blocked()
Move the non-VMX chunk of the "interrupt blocked" checks to a separate
helper so that KVM can reuse the code to detect if interrupts are blocked
for L2, e.g. to determine if a virtual interrupt _for L2_ is a valid wake
event. If L1 disables HLT-exiting for L2, nested APICv is enabled, and L2
HLTs, then L2 virtual interrupts are valid wake events, but if and only if
interrupts are unblocked for L2.
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240607172609.3205077-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 11 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.h | 1 |
2 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 6643c2d5b3a0..7efb52328e5d 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -5049,14 +5049,19 @@ int vmx_nmi_allowed(struct kvm_vcpu *vcpu, bool for_injection) return !vmx_nmi_blocked(vcpu); } +bool __vmx_interrupt_blocked(struct kvm_vcpu *vcpu) +{ + return !(vmx_get_rflags(vcpu) & X86_EFLAGS_IF) || + (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & + (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS)); +} + bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu) { if (is_guest_mode(vcpu) && nested_exit_on_intr(vcpu)) return false; - return !(vmx_get_rflags(vcpu) & X86_EFLAGS_IF) || - (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & - (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS)); + return __vmx_interrupt_blocked(vcpu); } int vmx_interrupt_allowed(struct kvm_vcpu *vcpu, bool for_injection) diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 7b64e271a931..2e23a01fe320 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -406,6 +406,7 @@ u64 construct_eptp(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level); bool vmx_guest_inject_ac(struct kvm_vcpu *vcpu); void vmx_update_exception_bitmap(struct kvm_vcpu *vcpu); bool vmx_nmi_blocked(struct kvm_vcpu *vcpu); +bool __vmx_interrupt_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); |