Re: Please revert / review 077fc1c04d70ef1748ac2daa6622b3320a1a004c

[Matthias <matthias.kannenberg@googlemail.com>]

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Just for me for clarification: So is it reasonable that my server crashed
with th #3 patch used, or is this something I should investigate furthor /
maybe do another xen build.?

Also, I don't have a serial port, but i got a netconsole setup running. Is
there any way to pipe the xl dmesg output into the normal dmesg output so
it would be caught by netconsole?


2014-06-20 10:22 GMT+02:00 Jan Beulich <JBeulich@suse.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
>
>

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