From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Re: Fedora 11 PV Xen domU (2.6.29.4-167.fc11.x86_64)
	crash with invalid opcode in xsave_cntxt_init (xsetbv)
Date: Mon, 21 Sep 2009 14:10:51 -0700
Message-ID: <4AB7EBDB.7040108@goop.org>
References: <20090921195750.GQ31123@reaktio.net> <4AB7E221.60709@goop.org>
	<20090921204444.GU31123@reaktio.net>
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To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= <pasik@iki.fi>
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On 09/21/09 13:44, Pasi K=E4rkk=E4inen wrote:
> Thanks for the fast reply. I'll ask him to try "noxsave".=20
>
> Other than that not much to do about it.. can't really update the F11 G=
A
> installer kernel.. (and I don't think doing own custom re-spin of F11 i=
s
> good solution for him).
>  =20

Oh, its a domU install?  You can mask it in the domain config with the
oh-so-intuitive cpuid=3D[] setting (leaf 1, ecx bit 26).  I think that's:

cpuid=3D['1:ecx=3Dxxxxx0xxxxxxxxxxxxxxxxxxxxxxxxxx,
          eax=3Dxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' ]

(I'm assuming it works for PV as well as HVM domains.)

    J