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    Subject[PATCH 20/21] kvm/svm: check for nested VINTR flag in svm_interrupt_allowed
    Date
    Not checking for this flag breaks any nested hypervisor that does not
    set VINTR. So fix it with this patch.

    Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
    ---
    arch/x86/kvm/svm.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
    index 089310d..8b32cc8 100644
    --- a/arch/x86/kvm/svm.c
    +++ b/arch/x86/kvm/svm.c
    @@ -2467,7 +2467,7 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
    return (vmcb->save.rflags & X86_EFLAGS_IF) &&
    !(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
    gif_set(svm) &&
    - !is_nested(svm);
    + !(is_nested(svm) && (svm->vcpu.arch.hflags & HF_VINTR_MASK));
    }

    static void enable_irq_window(struct kvm_vcpu *vcpu)
    --
    1.6.3.3



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