linux-kernel - Re: [PATCH] KVM: fix mov immediate emulation for 64-bit operands

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Message-ID: <4F08AA3C.9090306@zytor.com>
Date:	Sat, 07 Jan 2012 12:25:32 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Nadav Amit <nadav.amit@...il.com>
CC:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: fix mov immediate emulation for 64-bit operands

On 01/07/2012 12:21 PM, Nadav Amit wrote:
> MOV immediate instruction (opcodes 0xB8-0xBF) may take 64-bit operand.
> The previous emulation implementation assumes the operand is no longer than 32.
> 
> Signed-off-by: Nadav Amit <nadav.amit@...il.com>

There are exactly two such instructions: MOV immediate (B8-BF) and MOV
moff (A0-A3); you may want to check the latter too.

	-hpa

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