linux-kernel - Re: [PATCH] KVM: SVM: Fix CPL export via SS.DPL

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Message-ID: <20140629180033.GA12943@pd.tnic>
Date:	Sun, 29 Jun 2014 20:00:33 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Jan Kiszka <jan.kiszka@....de>
Cc:	Paolo Bonzini <pbonzini@...hat.com>,
	Gleb Natapov <gleb@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>, x86-ml <x86@...nel.org>,
	kvm@...r.kernel.org, Jörg Rödel <joro@...tes.org>
Subject: Re: [PATCH] KVM: SVM: Fix CPL export via SS.DPL

On Sun, Jun 29, 2014 at 05:12:43PM +0200, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@...mens.com>
> 
> We import the CPL via SS.DPL since ae9fedc793. However, we fail to
> export it this way so far. This caused spurious guest crashes, e.g. of
> Linux when accessing the vmport from guest user space which triggered
> register saving/restoring to/from host user space.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>

Yep, looks good.

Tested-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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