[Beignet] Haswell-ULT Support?

[Meng, Mengmeng]

Hi,
   With 4.0.0-rc6 kernel (enable_cmd_parser=1 as default), the HSW issue also exists on Release_v1.0 branch:1.0.1, 1.0.2, and the latest git. 
But it is OK on 1.0.0 (git-59142eb). The bisected commit is also git-7ecc5b9d.





Thanks,
Meng

-----Original Message-----
From: Zhigang Gong [mailto:zhigang.gong at linux.intel.com] 
Sent: Tuesday, April 14, 2015 2:04 PM
To: Rebecca N. Palmer; Meng, Mengmeng
Cc: Julian Simioni; beignet at lists.freedesktop.org
Subject: Re: [Beignet] Haswell-ULT Support?

Not sure whether it's helpful. We need to do some experiments on HSW with latest kernel.
Mengmeng, could you help to test Release_v1.0 branch with 4.0.0-rc6 kernel? Maybe bisect on beignet side to find out the first bad commit?

Thanks.

On Fri, Apr 10, 2015 at 12:01:48PM +0100, Rebecca N. Palmer wrote:
> On 10/04/15 09:56, Zhigang Gong wrote:
> >I think I know the cause now. Because beignet uses some new registers 
> >which are not in the whitelist (not included in c9224f). These new 
> >registers are to enable atomic on L3 which is disabled by KMD by default.
> 
> The obvious place matching that description is 
> http://cgit.freedesktop.org/beignet/commit/?h=Release_v1.0&id=7ecc5b9d
> 8d5baf4e049ade885ece3c1a1d6cab1b ...but that's between 1.0.0 and 
> 1.0.1, so can't explain "have tried unsuccessfully to run Beignet 
> 1.0.0, 1.0.1, 1.0.2, and the latest git".
> 
> Does reverting that commit help at all?
> 
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