From: "Christian König" <christian.koenig@amd.com>
To: Matthew Brost <matthew.brost@intel.com>
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Christian König" <ckoenig.leichtzumerken@gmail.com>,
"Simona Vetter" <simona.vetter@ffwll.ch>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Huang Rui" <ray.huang@amd.com>,
intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
matthew.auld@intel.com, "David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>
Subject: Re: [PATCH v6 2/8] drm/ttm: Add ttm_bo_access
Date: Mon, 25 Nov 2024 17:19:54 +0100 [thread overview]
Message-ID: <634b07dd-aa5a-410e-8f62-0a96567c7932@amd.com> (raw)
In-Reply-To: <Z0SX8WJCPADGLVE5@lstrano-desk.jf.intel.com>
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Am 25.11.24 um 16:29 schrieb Matthew Brost:
> On Fri, Nov 15, 2024 at 10:27:59AM -0800, Matthew Brost wrote:
>> [SNIP]
>> We use this interface to read a BO marked with a dumpable flag during a
>> GPU hang in our error capture code. This is an internal KMD feature, not
>> directly exposed to user space. Would adding this helper be acceptable
>> for this use case? I can add kernel indicating the current restrictions
>> of the helper (do not directly expose to user space) too if that would
>> help.
>>
> Christian - ping on above.
Sorry, I will try to give those mailing list tasks a bit more time in
before the xmas holidays.
That is an acceptable use case, but the problem is that this helper
won't work for that.
See during a GPU hang you can't lock BOs, so how do you want to look
into their content with the peek helper?
The only thing you could potentially do is to trylock the BO and then
dump, but that would most likely be a bit unreliable.
Regards,
Christian.
>> Matt
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next prev parent reply other threads:[~2024-11-25 16:20 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-31 18:10 [PATCH v6 0/8] Fix non-contiguous VRAM BO access in Xe Matthew Brost
2024-10-31 18:10 ` [PATCH v6 1/8] drm/xe: Add xe_bo_vm_access Matthew Brost
2024-10-31 18:10 ` [PATCH v6 2/8] drm/ttm: Add ttm_bo_access Matthew Brost
2024-10-31 23:43 ` Matthew Brost
2024-11-04 17:34 ` Rodrigo Vivi
2024-11-04 19:28 ` Christian König
2024-11-04 21:49 ` Matthew Brost
2024-11-05 7:41 ` Christian König
2024-11-05 18:35 ` Matthew Brost
2024-11-06 9:48 ` Christian König
2024-11-06 15:25 ` Matthew Brost
2024-11-06 15:44 ` Christian König
2024-11-06 17:00 ` Matthew Brost
2024-11-07 9:44 ` Christian König
2024-11-11 8:00 ` Joonas Lahtinen
2024-11-11 10:10 ` Simona Vetter
2024-11-11 11:34 ` Christian König
2024-11-11 14:00 ` Joonas Lahtinen
2024-11-11 15:54 ` Christian König
2024-11-11 22:45 ` Matthew Brost
2024-11-12 9:23 ` Christian König
2024-11-12 13:41 ` Joonas Lahtinen
2024-11-12 16:22 ` Thomas Hellström
2024-11-12 16:25 ` Christian König
2024-11-12 16:33 ` Thomas Hellström
2024-11-13 8:37 ` Christian König
2024-11-13 10:44 ` Thomas Hellström
2024-11-13 11:42 ` Christian König
2024-11-15 18:27 ` Matthew Brost
2024-11-25 15:29 ` Matthew Brost
2024-11-25 16:19 ` Christian König [this message]
2024-11-25 17:27 ` Matthew Brost
2024-11-26 8:19 ` Christian König
2024-11-26 17:49 ` Matthew Brost
2024-11-27 13:21 ` Christian König
2024-11-12 8:28 ` Simona Vetter
2024-11-12 8:58 ` Christian König
2024-11-12 13:30 ` Joonas Lahtinen
2024-11-11 11:27 ` Christian König
2024-11-04 19:47 ` Christian König
2024-11-04 21:30 ` Matthew Brost
2024-11-04 22:26 ` Rodrigo Vivi
2024-10-31 18:10 ` [PATCH v6 3/8] drm/xe: Add xe_ttm_access_memory Matthew Brost
2024-10-31 18:10 ` [PATCH v6 4/8] drm/xe: Take PM ref in delayed snapshot capture worker Matthew Brost
2024-10-31 18:10 ` [PATCH v6 5/8] drm/xe/display: Update intel_bo_read_from_page to use ttm_bo_access Matthew Brost
2024-10-31 18:10 ` [PATCH v6 6/8] drm/xe: Use ttm_bo_access in xe_vm_snapshot_capture_delayed Matthew Brost
2024-10-31 18:10 ` [PATCH v6 7/8] drm/xe: Set XE_BO_FLAG_PINNED in migrate selftest BOs Matthew Brost
2024-10-31 18:10 ` [PATCH v6 8/8] drm/xe: Only allow contiguous BOs to use xe_bo_vmap Matthew Brost
2024-10-31 18:15 ` ✓ CI.Patch_applied: success for Fix non-contiguous VRAM BO access in Xe (rev6) Patchwork
2024-10-31 18:15 ` ✗ CI.checkpatch: warning " Patchwork
2024-10-31 18:17 ` ✓ CI.KUnit: success " Patchwork
2024-10-31 18:28 ` ✓ CI.Build: " Patchwork
2024-10-31 18:31 ` ✓ CI.Hooks: " Patchwork
2024-10-31 18:32 ` ✗ CI.checksparse: warning " Patchwork
2024-10-31 18:57 ` ✓ CI.BAT: success " Patchwork
2024-10-31 21:27 ` ✗ CI.FULL: failure " Patchwork
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