From: "Roedel, Joerg" <Joerg.Roedel@amd.com>
To: Avi Kivity <avi@redhat.com>
Cc: IVAN ANGELOV <ivangotoy@gmail.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>, "x86@kernel.org" <x86@kernel.org>
Subject: Re: kvm_amd BUG: unable to handle kernel NULL pointer dereference at 00000014
Date: Mon, 7 Mar 2011 14:29:52 +0100 [thread overview]
Message-ID: <20110307132952.GG17719@amd.com> (raw)
In-Reply-To: <4D74DBAA.7020901@redhat.com>
On Mon, Mar 07, 2011 at 08:20:42AM -0500, Avi Kivity wrote:
> On 03/07/2011 03:16 PM, Roedel, Joerg wrote:
> > According to the comments in stackprotector.h its the same on amd64 (the
> > difference is that gcc expects the canary value at a different offset
> > from %gs).
> > So we should probably unlazy %gs reload alltogether.
>
> On x86_64 we don't do lazy %gs reload (lazy %fs instead), so it should
> work as is.
Right. I mixed that up with the lazy KERNEL_GS_BASE switching on amd64.
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prev parent reply other threads:[~2011-03-07 13:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-03 22:34 kvm_amd BUG: unable to handle kernel NULL pointer dereference at 00000014 IVAN ANGELOV
2011-03-06 10:23 ` Avi Kivity
2011-03-07 12:11 ` Roedel, Joerg
2011-03-07 12:50 ` Avi Kivity
2011-03-07 13:16 ` Roedel, Joerg
2011-03-07 13:20 ` Avi Kivity
2011-03-07 13:29 ` Roedel, Joerg [this message]
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