From: Ian Campbell <Ian.Campbell@citrix.com>
To: Frediano Ziglio <freddy77@gmail.com>
Cc: George Dunlap <george.dunlap@eu.citrix.com>,
Philipp Hahn <hahn@univention.de>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Xen-devel@lists.xen.org, David Vrabel <david.vrabel@citrix.com>,
Jan Beulich <JBeulich@suse.com>
Subject: Re: xenstored crashes with SIGSEGV
Date: Thu, 18 Dec 2014 10:17:47 +0000 [thread overview]
Message-ID: <1418897867.11882.11.camel@citrix.com> (raw)
In-Reply-To: <CAHt6W4eLJ-FNwdLmDHuZFKpEcc+eQn0AmnFdtvBW7g3KUu96QQ@mail.gmail.com>
On Tue, 2014-12-16 at 16:13 +0000, Frediano Ziglio wrote:
> Do we have a bug in Xen that affect SSE instructions (possibly already
> fixed after Philipp version) ?
I've had a niggling feeling of Deja Vu over this which I'd been putting
down to an old Xen on ARM bug in the area of FPU register switching.
But it seems at some point (possibly even still) there was a similar
issue with pvops kernels on x86, see:
http://bugs.xenproject.org/xen/bug/40
Philipp, what kernel are you guys using?
CCing Jan and the x86 kernel guys (and George since he registered the
bug). I'm not seeing anything in the kernel logs which looks like a fix
(there's some PVH related cr0 frobbing, but I don't think that's it).
I also can't quite shake the feeling that there was another much older
issue relating to FPU context switch on x86, but I think that was truly
ancient history (2.6.18 era stuff)
Ian.
next prev parent reply other threads:[~2014-12-18 10:17 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-13 7:45 xenstored crashes with SIGSEGV Philipp Hahn
2014-11-13 9:12 ` Ian Campbell
2014-12-12 16:14 ` Philipp Hahn
2014-12-12 16:32 ` Ian Campbell
2014-12-12 16:45 ` Philipp Hahn
2014-12-12 16:56 ` Ian Campbell
2014-12-12 17:20 ` Philipp Hahn
2014-12-12 17:58 ` Ian Campbell
2014-12-15 13:17 ` Ian Campbell
2014-12-15 14:19 ` Philipp Hahn
2014-12-15 14:50 ` Ian Campbell
2014-12-15 17:45 ` Ian Campbell
2014-12-15 22:29 ` Philipp Hahn
2014-12-16 9:51 ` Ian Campbell
2014-12-16 10:25 ` Ian Campbell
2014-12-16 10:45 ` Ian Campbell
2014-12-16 11:06 ` Ian Campbell
2014-12-16 11:30 ` Frediano Ziglio
2014-12-16 12:23 ` Ian Campbell
2014-12-16 16:13 ` Frediano Ziglio
2014-12-16 16:23 ` Ian Campbell
2014-12-16 16:44 ` Frediano Ziglio
2014-12-17 9:14 ` Frediano Ziglio
2014-12-17 12:43 ` core dump files do not include all CPU registers? Philipp Hahn
2014-12-18 10:20 ` xenstored crashes with SIGSEGV Philipp Hahn
2014-12-18 10:17 ` Ian Campbell [this message]
2014-12-18 10:25 ` David Vrabel
2014-12-19 14:30 ` Konrad Rzeszutek Wilk
2014-12-18 10:49 ` Jan Beulich
2014-12-18 10:51 ` Ian Campbell
2014-12-19 12:36 ` Philipp Hahn
2015-01-06 7:19 ` Philipp Hahn
2015-03-12 12:08 ` Philipp Hahn
2015-03-12 18:17 ` Oleg Nesterov
2015-03-12 21:57 ` Philipp Hahn
2014-12-16 12:04 ` Philipp Hahn
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