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From: "Michel Dänzer" <michel@daenzer.net>
To: "Christian König" <deathsimple@vodafone.de>,
	"Alex Deucher" <alexdeucher@gmail.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH 1/3] drm/radeon: stop poisoning the GART TLB
Date: Thu, 19 Jun 2014 10:48:13 +0900	[thread overview]
Message-ID: <53A2415D.6020808@daenzer.net> (raw)
In-Reply-To: <539D9601.8090308@vodafone.de>

On 15.06.2014 21:48, Christian König wrote:
> Am 13.06.2014 23:31, schrieb Alex Deucher:
>> On Fri, Jun 13, 2014 at 11:45 AM, Christian König
>> <deathsimple@vodafone.de> wrote:
>>> Hi Marek,
>>>
>>> ah, yes! Piglit in combination with that patch can indeed crash the box.
>>>
>>> Going to investigate now that I can reproduce it.
>> I wonder if it's a clockgating issue with the MC or BIF?  You might
>> try adjusting the rdev->cg_flags (try setting it to 0) in
>> radeon_asic.c or disabling dpm.
> 
> Unfortunately that was just a false alarm.
> 
> I was just on a branch which didn't had the "stop poisoning the GART
> TLB" patch, after applying this patch I can again let piglit run for the
> whole night without a lockup.
> 
> No idea what goes wrong when Marek runs piglit, but 3.15.0+"stop
> poisoning the GART TLB"+"force_gtt" is rock solid here.

FWIW, 3.15 doesn't survive piglit on my Bonaire either, but 3.14 is
fine. 3.15 seems stable on Kaveri though, but I haven't tried the
force_gtt patch on that yet.

There have also been a number of bug reports about stability regressions
in 3.15 on various SI and CIK cards. It seems likely that at least some
of those are related to this issue as well.

If we can't figure out the problem soon, we probably need to revert the
'Use normal BOs for page tables' and dependent changes at least for 3.15.y?


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer
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  reply	other threads:[~2014-06-19  1:48 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-04 13:29 [PATCH 1/3] drm/radeon: stop poisoning the GART TLB Christian König
2014-06-04 13:29 ` [PATCH 2/3] drm/radeon: remove range check from *_gart_set_page Christian König
2014-06-04 13:29 ` [PATCH 3/3] drm/radeon: use the SDMA on for buffer moves on CIK again Christian König
2014-06-04 13:46 ` [PATCH 1/3] drm/radeon: stop poisoning the GART TLB Alex Deucher
2014-06-04 13:50   ` Christian König
2014-06-10 23:30 ` Marek Olšák
2014-06-11  9:29   ` Christian König
2014-06-11 10:56     ` Marek Olšák
2014-06-12 11:23       ` Christian König
2014-06-13 13:19         ` Marek Olšák
2014-06-13 15:45           ` Christian König
2014-06-13 21:31             ` Alex Deucher
2014-06-15 12:48               ` Christian König
2014-06-19  1:48                 ` Michel Dänzer [this message]
2014-06-19  9:45                   ` Christian König
2014-06-23  8:15                     ` Michel Dänzer
2014-06-23  9:56                       ` Christian König
2014-06-24  6:49                         ` Michel Dänzer
2014-06-24 10:14                           ` Christian König
2014-06-25  3:59                             ` Michel Dänzer
2014-06-26 12:25                               ` Dieter Nützel
2014-06-27  2:31                               ` Michel Dänzer
2014-06-27  8:26                                 ` Christian König
2014-06-27  8:59                                   ` Michel Dänzer
2014-06-29 10:34                                     ` Christian König
2014-06-30  6:10                                       ` Michel Dänzer
2014-06-30  7:43                                         ` Christian König
2014-07-01  6:48                                           ` Michel Dänzer
2014-07-01 12:16                                             ` Christian König
2014-07-02  6:57                                               ` Michel Dänzer
2014-07-02 19:31                                                 ` Christian König
2014-07-03  3:48                                                   ` Michel Dänzer
2014-07-03  6:36                                                     ` Christian König
2014-06-19 10:20                   ` Marek Olšák
2014-06-19 10:25                     ` Christian König
2014-06-20  1:10                     ` Michel Dänzer

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