Il 30/06/2014 11:03, Nadav Amit ha scritto:
We encountered a scenario in which after an INIT is delivered, a pending interrupt is delivered, although it was sent before the INIT. As the SDM states in section 10.4.7.1, the ISR and the IRR should be cleared after INIT as KVM does. This also means that pending interrupts should be cleared. This patch clears upon reset (and INIT) the pending interrupts; and at the same occassion clears the pending exceptions, since they may cause a similar issue. Signed-off-by: Nadav Amit <namit@xxxxxxxxxxxxxxxxx> --- arch/x86/kvm/x86.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f32a025..6425a31 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6835,6 +6835,8 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu) atomic_set(&vcpu->arch.nmi_queued, 0); vcpu->arch.nmi_pending = 0; vcpu->arch.nmi_injected = false; + kvm_clear_interrupt_queue(vcpu); + kvm_clear_exception_queue(vcpu); memset(vcpu->arch.db, 0, sizeof(vcpu->arch.db)); vcpu->arch.dr6 = DR6_FIXED_1;
Applied to kvm/queue, thanks. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
