From: wogiz@openmailbox.org
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: mihai.dontu@gmail.com, Jan Beulich <jbeulich@suse.com>,
xen-devel@lists.xen.org
Subject: Re: Bug in x86 instruction emulator?
Date: Sat, 16 Apr 2016 06:06:12 +0200 [thread overview]
Message-ID: <0e5762e95b3ffed38023718ffabc457f@openmailbox.org> (raw)
In-Reply-To: <5711289A.2070409@citrix.com>
On 2016-04-15 19:44, Andrew Cooper wrote:
> On 15/04/16 18:33, wogiz@openmailbox.org wrote:
>> On 2016-04-07 04:04, Jan Beulich wrote:
>>> We'd need to know which exact exception (including error code and,
>>> in the case of #PF, CR2 value) gets raised to the guest by what
>>> specific piece of code in the hypervisor. That'll likely mean some
>>> instrumentation of the hypervisor code.
>>>
>>> Jan
>>
>> I want to give it a try, but I'm not sure how the hypervisor code
>> should be modified.
>>
>> Can anyone point me to some documentation or anything else that can
>> help me get started?
>
> Very sorry - I have been busy with patches intended for the 4.7 code
> freeze.
>
> What domU are you using? Is the issue reproducible from a LiveCD by
> any
> chance?
>
> ~Andrew
No problem. I appreciate your help.
I'm using Alpine Linux 3.3.3 domU, but I have also tested various
versions
of Ubuntu.
The issue is reproducible from LiveCD, both Alpine and Ubuntu.
The only requriements to reproduce the fault is a Linux HVM domU with
vga="qxl"
and qxl driver installed in domU. Xorg will segfault instantly when
started, no
matter what Linux distro or other configuration.
William Z.
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next prev parent reply other threads:[~2016-04-16 4:06 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 23:38 Bug in x86 instruction emulator? wogiz
2016-04-05 23:57 ` Mihai Donțu
2016-04-06 0:02 ` Mihai Donțu
2016-04-06 1:48 ` wogiz
2016-04-06 1:26 ` wogiz
2016-04-06 8:55 ` Andrew Cooper
2016-04-07 1:26 ` wogiz
2016-04-07 2:04 ` Jan Beulich
2016-04-08 1:43 ` wogiz
2016-04-15 17:33 ` wogiz
2016-04-15 17:44 ` Andrew Cooper
2016-04-16 4:06 ` wogiz [this message]
2016-05-04 16:02 ` Jan Beulich
2016-05-04 16:04 ` Wei Liu
2016-05-04 16:06 ` Andrew Cooper
2016-05-17 16:53 ` William Z.
2016-05-17 17:03 ` Andrew Cooper
2016-05-18 9:12 ` Jan Beulich
2016-05-20 16:44 ` William Z.
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