Commit 163b135e authored Jul 21, 2014 by Nadav Amit Committed by Paolo Bonzini Jul 21, 2014

KVM: x86: popf emulation should not change RF

RFLAGS.RF is always zero after popf. Therefore, popf should not updated RF, as
anyhow emulating popf, just as any other instruction should clear RFLAGS.RF.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent bb663c7a

arch/x86/kvm/emulate.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1675,7 +1675,7 @@ static int emulate_popf(struct x86_emulate_ctxt *ctxt,
		return rc;

		change_mask = EFLG_CF \| EFLG_PF \| EFLG_AF \| EFLG_ZF \| EFLG_SF \| EFLG_OF
		\| EFLG_TF \| EFLG_DF \| EFLG_NT \| EFLG_RF \| EFLG_AC \| EFLG_ID;
		\| EFLG_TF \| EFLG_DF \| EFLG_NT \| EFLG_AC \| EFLG_ID;

		switch(ctxt->mode) {
		case X86EMUL_MODE_PROT64: