diff mbox series

[v4,20/24] KVM: x86: Treat pending TRIPLE_FAULT requests as pending exceptions

Message ID 20220723005137.1649592-21-seanjc@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: x86: Event/exception fixes and cleanups | expand

Commit Message

Sean Christopherson July 23, 2022, 12:51 a.m. UTC 
Treat pending TRIPLE_FAULTS as pending exceptions.  A triple fault is an
exception for all intents and purposes, it's just not tracked as such
because there's no vector associated the exception.  E.g. if userspace
were to set vcpu->request_interrupt_window while running L2 and L2 hit a
triple fault, a triple fault nested VM-Exit should be synthesized to L1
before exiting to userspace with KVM_EXIT_IRQ_WINDOW_OPEN.

Link: https://lore.kernel.org/all/YoVHAIGcFgJit1qp@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
---
 arch/x86/kvm/x86.c | 3 ---
 arch/x86/kvm/x86.h | 3 ++-
 2 files changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6c77411fc570..d714f335749c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12657,9 +12657,6 @@  static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
 	if (kvm_xen_has_pending_events(vcpu))
 		return true;
 
-	if (kvm_test_request(KVM_REQ_TRIPLE_FAULT, vcpu))
-		return true;
-
 	return false;
 }
 
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 256745d1a2c3..a784ff90740b 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -85,7 +85,8 @@  int kvm_check_nested_events(struct kvm_vcpu *vcpu);
 static inline bool kvm_is_exception_pending(struct kvm_vcpu *vcpu)
 {
 	return vcpu->arch.exception.pending ||
-	       vcpu->arch.exception_vmexit.pending;
+	       vcpu->arch.exception_vmexit.pending ||
+	       kvm_test_request(KVM_REQ_TRIPLE_FAULT, vcpu);
 }
 
 static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)