From: Jan Kiszka <jan.kiszka@siemens.com>
To: Tom Horsley <tom.horsley@att.net>
Cc: kvm@vger.kernel.org
Subject: Re: bad leakage between virtual machines?
Date: Fri, 15 Jan 2010 18:37:57 +0100 [thread overview]
Message-ID: <4B50A7F5.4020708@siemens.com> (raw)
In-Reply-To: <20100115101706.4fb8897a@tomh.ccur.com>
Tom Horsley wrote:
> I just submitted this fedora bug with lots of details:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=555788
>
> It sure seems to me like the contents of the debug
> address trap registers are leaking across virtual machines
> (at least for opterons on this motherboard :-).
Are only AMD boxes affected, or did you also test on Intel?
>
> Anyone seen anything like this before? (I've been
> having similar problems on this host since it was
> running xen 3.1 before switching to kvm).
I still have one debug register oddity on my todo list (that one causes
an unhandled VM exit), but I'm not aware of such an issue nor do I
remember any patch between 2.6.31.x and now at the moment that may have
fixed it. Nevertheless, could you retry with latest kvm kernel or a
recent kvm-kmod release?
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2010-01-15 17:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-15 15:17 bad leakage between virtual machines? Tom Horsley
2010-01-15 17:37 ` Jan Kiszka [this message]
2010-01-15 18:21 ` Tom Horsley
2010-01-15 18:38 ` Jan Kiszka
2010-01-20 0:18 ` Jan Kiszka
2010-01-20 17:36 ` Jan Kiszka
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