Messages in this thread Patch in this message | | | From | Nadav Amit <> | Subject | [PATCH 5/7] KVM: x86: popf emulation should not change RF | Date | Mon, 21 Jul 2014 14:37:28 +0300 |
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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> --- arch/x86/kvm/emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index dd07410..cf117bf 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -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: -- 1.9.1
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