From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: VMX: Check cpl before emulating debug register access
Date: Tue, 1 Sep 2009 13:44:04 -0300 [thread overview]
Message-ID: <20090901164404.GA24107@amt.cnet> (raw)
In-Reply-To: <1251795805-11643-1-git-send-email-avi@redhat.com>
On Tue, Sep 01, 2009 at 12:03:25PM +0300, Avi Kivity wrote:
> Debug registers may only be accessed from cpl 0. Unfortunately, vmx will
> code to emulate the instruction even though it was issued from guest
> userspace, possibly leading to an unexpected trap later.
>
> Cc: stable@kernel.org
> Signed-off-by: Avi Kivity <avi@redhat.com>
Applied, thanks.
prev parent reply other threads:[~2009-09-01 16:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-01 9:03 [PATCH] KVM: VMX: Check cpl before emulating debug register access Avi Kivity
2009-09-01 16:44 ` Marcelo Tosatti [this message]
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