linux-kernel - Re: [PATCH] kvm: x86: do not leak guest xcr0 into host interrupt handlers

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Message-ID: <5703E2BB.8070707@redhat.com>
Date:	Tue, 5 Apr 2016 18:07:23 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	David Matlack <dmatlack@...gle.com>
Cc:	kvm list <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>, stable@...r.kernel.org
Subject: Re: [PATCH] kvm: x86: do not leak guest xcr0 into host interrupt
 handlers



On 05/04/2016 17:56, David Matlack wrote:
> > I'm going to rerun the tests without this patch, as it seems the most
> > likely culprit, and leave it out of the pull request if they pass.
>
> Agreed this is a very likely culprit. I think I see one way the
> guest's xcr0 can leak into the host. I will do some testing an send
> another version. Thanks.

Tests passed without this patch.

Paolo