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Date: Fri, 18 Apr 2014 07:11:34 +0300 From: Nadav Amit <namit@...technion.ac.il> To: gleb@...nel.org, pbonzini@...hat.com Cc: tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, Nadav Amit <namit@...technion.ac.il> Subject: [PATCH 5/5] KVM: x86: Processor mode may be determined incorrectly If EFER.LMA is off, cs.l does not determine execution mode. Currently, the emulation engine assumes differently. Signed-off-by: Nadav Amit <namit@...technion.ac.il> --- :100644 100644 f4d9839... c99f7eb... M arch/x86/kvm/x86.c arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f4d9839..c99f7eb 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4887,7 +4887,7 @@ static void init_emulate_ctxt(struct kvm_vcpu *vcpu) ctxt->eip = kvm_rip_read(vcpu); ctxt->mode = (!is_protmode(vcpu)) ? X86EMUL_MODE_REAL : (ctxt->eflags & X86_EFLAGS_VM) ? X86EMUL_MODE_VM86 : - cs_l ? X86EMUL_MODE_PROT64 : + (cs_l && is_long_mode(vcpu)) ? X86EMUL_MODE_PROT64 : cs_db ? X86EMUL_MODE_PROT32 : X86EMUL_MODE_PROT16; ctxt->guest_mode = is_guest_mode(vcpu); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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