From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH] KVM: x86 emulator: disable writeback for TEST
Date: Mon, 12 Sep 2011 09:37:10 -0300
Message-ID: <20110912123710.GA14651@amt.cnet>
References: <1315729382-2950-1-git-send-email-avi@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: kvm@vger.kernel.org, ya su <suya94335@gmail.com>
To: Avi Kivity <avi@redhat.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx1.redhat.com ([209.132.183.28]:27776 "EHLO mx1.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1755454Ab1ILMnp (ORCPT <rfc822;kvm@vger.kernel.org>);
	Mon, 12 Sep 2011 08:43:45 -0400
Content-Disposition: inline
In-Reply-To: <1315729382-2950-1-git-send-email-avi@redhat.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

On Sun, Sep 11, 2011 at 11:23:02AM +0300, Avi Kivity wrote:
> The TEST instruction doesn't write its destination operand.  This
> could cause problems if an MMIO register was accessed using the TEST
> instruction.  Recently Windows XP was observed to use TEST against
> the APIC ICR; this can cause spurious IPIs.
> 
> Signed-off-by: Avi Kivity <avi@redhat.com>

Applied, thanks.