From mboxrd@z Thu Jan  1 00:00:00 1970
From: George Dunlap <george.dunlap@eu.citrix.com>
Subject: Re: Xen 4.3 development update RC2 imminent
Date: Thu, 23 May 2013 17:10:51 +0100
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To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= <pasik@iki.fi>
Cc: Anthony Perard <anthony.perard@citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Fabio Fantoni <fabio.fantoni@m2r.biz>, Jan Beulich <JBeulich@suse.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On 23/05/13 16:10, Pasi K=E4rkk=E4inen wrote:
> On Thu, May 23, 2013 at 04:58:05PM +0200, Fabio Fantoni wrote:
>>         For now with sse, sse2 and sse3 disabled the performance is very=
 very
>>         low (even without qxl), while performances are acceptables with =
SSE.
>>         I got the same results with qxl card and qxl driver loaded, but =
now at
>>         least X and qemu didn't crash.
>>
>>       Sorry, same result as what?  Does the X driver work or not?
>>
>>     X qxl driver works with sse disabled (tried also with the correct ss=
e4.1
>>     and sse4.2 on cpuid) but performance are too bad, even without qxl,
>>     therefore it seems that the performance problem is only due to sse b=
eing
>>     disabled.
>>
> It's good to hear QXL actually works with Xen qemu-upstream,
> (in the future) when the SSE issue is fixed!
>
> How about Anthony's patch for QXL.. Is that OK for for Xen 4.3,
> or should that wait for 4.4 ?

Unless qxl is useable with sse2 disabled, there's no benefit to having =

the QXL fix in 4.3.  The only reason Anthony might do it is to be able =

to take it off his queue of things to do later -- I would leave it to =

his discretion.

  -George