KVM: x86: Treat pending TRIPLE_FAULT requests as pending exceptions
authorSean Christopherson <seanjc@google.com>
Tue, 30 Aug 2022 23:16:09 +0000 (23:16 +0000)
committerPaolo Bonzini <pbonzini@redhat.com>
Mon, 26 Sep 2022 16:03:11 +0000 (12:03 -0400)
commit7055fb11311622852c16463b1ccaa59e7691e42e
tree8d156d32b11b5e7dba6c8e6ad1373817f94fcea2
parent7709aba8f71613ae5d18d8c00adb54948e6bedb3
KVM: x86: Treat pending TRIPLE_FAULT requests as pending exceptions

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>
Link: https://lore.kernel.org/r/20220830231614.3580124-23-seanjc@google.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/x86.c
arch/x86/kvm/x86.h