On Sun, Mar 03, 2013, Jan Kiszka wrote about "[PATCH] KVM: nVMX: Reset RFLAGS on VM-exit": > From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > > Ouch, how could this work so well that far? We need to clear RFLAGS to > the reset value as specified by the SDM. Particularly, IF must be off > after VM-exit! nested_vmx_succeed() or nested_vmx_fail*() were already clearing some of the fields that I understood was necessary to clear. But they did not clear the IF - I never realised (and didn't verify now) that this is part of the spec. And since L1 KVM anyways enters L2 with interrupts disabled, nested KVM would not see a difference. > + vmx_set_rflags(vcpu, 0x02); There's a macro X86_EFLAGS_BIT1 which you can use for this 0x02. -- Nadav Har'El | Sunday, Mar 3 2013, 22 Adar 5773 nyh@xxxxxxxxxxxxxxxxxxx |----------------------------------------- Phone +972-523-790466, ICQ 13349191 |"I don't use drugs, my dreams are http://nadav.harel.org.il |frightening enough." -- M. C. Escher -- 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
