From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org, ya su <suya94335@gmail.com>
Subject: Re: [PATCH] KVM: x86 emulator: disable writeback for TEST
Date: Mon, 12 Sep 2011 09:37:10 -0300 [thread overview]
Message-ID: <20110912123710.GA14651@amt.cnet> (raw)
In-Reply-To: <1315729382-2950-1-git-send-email-avi@redhat.com>
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.
prev parent reply other threads:[~2011-09-12 12:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-11 8:23 [PATCH] KVM: x86 emulator: disable writeback for TEST Avi Kivity
2011-09-12 12:37 ` Marcelo Tosatti [this message]
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