From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: [PATCH] KVM: Emulator: Opcode 0x80 gets a byte immediate Date: Sun, 29 Apr 2012 11:22:33 +0300 Message-ID: <20120429082233.GX15413@redhat.com> References: <1335536616-8524-1-git-send-email-namit@cs.technion.ac.il> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: avi@redhat.com, mtosatti@redhat.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org To: Nadav Amit Return-path: Content-Disposition: inline In-Reply-To: <1335536616-8524-1-git-send-email-namit@cs.technion.ac.il> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Fri, Apr 27, 2012 at 05:23:36PM +0300, Nadav Amit wrote: > The single byte opcode 0x80 should get a byte immediate. > The previous emulation is broken for opcode 0x80. It is not. That what ByteOp is about. > --- > arch/x86/kvm/emulate.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c > index 8375622..dd53e53 100644 > --- a/arch/x86/kvm/emulate.c > +++ b/arch/x86/kvm/emulate.c > @@ -3464,7 +3464,7 @@ static struct opcode opcode_table[256] = { > /* 0x70 - 0x7F */ > X16(D(SrcImmByte)), > /* 0x80 - 0x87 */ > - G(ByteOp | DstMem | SrcImm | ModRM | Group, group1), > + G(ByteOp | DstMem | SrcImmByte | ModRM | Group, group1), > G(DstMem | SrcImm | ModRM | Group, group1), > G(ByteOp | DstMem | SrcImm | ModRM | No64 | Group, group1), > G(DstMem | SrcImmByte | ModRM | Group, group1), > -- > 1.7.4.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Gleb.