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From: "Jan Beulich" <JBeulich@suse.com>
To: Matthias <matthias.kannenberg@googlemail.com>
Cc: Yang Z Zhang <yang.z.zhang@intel.com>,
	"tim@xen.org" <tim@xen.org>,
	"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Please revert / review 077fc1c04d70ef1748ac2daa6622b3320a1a004c
Date: Fri, 20 Jun 2014 09:22:51 +0100	[thread overview]
Message-ID: <53A40B7B020000780001BE38@mail.emea.novell.com> (raw)
In-Reply-To: <CABoYbGoVPy9R=DD98xD4oYV88vAW=44-SUbFP1EbNWfFCR_DWw@mail.gmail.com>

>>> On 19.06.14 at 18:22, <matthias.kannenberg@googlemail.com> wrote:
> Test 2:
> 
> Xen-Version: Compiled a normal 077 commit version without any of your
> patches
> Xen cmd line: added immo=no-sharept as suggested
> Passed-through devices: vga, 2 usb controller (ohci+ehci), sound card
> Result: works fine. domU boots, no BSOD, no other problems, server seems to
> be stable. So not sharing the VT-d page tables seems to do the trick / the
> problem is in the page table sharing.

Just to clarify - page table sharing is intended to get disabled in
-unstable on the AMD side (
http://lists.xenproject.org/archives/html/xen-devel/2014-06/msg00416.html,
still awaiting an AMD IOMMU maintainer ack). But as that's not
immediately a backporting candidate, understanding the problem
to find a solution also for 4.4.x would still be necessary.

Jan

  parent reply	other threads:[~2014-06-20  8:22 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-11 15:44 Please revert / review 077fc1c04d70ef1748ac2daa6622b3320a1a004c Matthias
2014-06-12  1:02 ` Zhang, Yang Z
2014-06-12  9:35   ` Jan Beulich
2014-06-12 13:49     ` Matthias
2014-06-16  7:47       ` Zhang, Yang Z
2014-06-16  8:08         ` Jan Beulich
2014-06-16 13:42           ` Matthias
2014-06-16 14:52             ` Jan Beulich
2014-06-16 15:07               ` Matthias
2014-06-18  7:25             ` Zhang, Yang Z
2014-06-18 22:21               ` Matthias
2014-06-19  1:07                 ` Matthias
2014-06-19  1:29                   ` Matthias
2014-06-19 12:25                 ` Zhang, Yang Z
2014-06-19 16:22                   ` Matthias
2014-06-20  0:20                     ` Zhang, Yang Z
2014-06-20  8:22                     ` Jan Beulich [this message]
2014-06-20 10:07                       ` Matthias
2014-06-20 11:18                         ` Jan Beulich
2014-06-20 11:27                           ` Zhang, Yang Z
2014-06-20 11:24                         ` Zhang, Yang Z
2014-06-20 11:28                       ` Zhang, Yang Z
2014-06-20  8:17                   ` Jan Beulich
2014-06-20 11:26                     ` Zhang, Yang Z

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