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| author | Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> | 2026-09-07 10:59:18 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-10-07 15:47:49 -0500 |
| commit | ed3ccc190765f194254c47617a0d894307d39862 (patch) | |
| tree | 3f6d27d51ccdd864a2a559a63d043868fec82398 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 2973773a8c011d06addebfad5f18f1288fb0fb56 (diff) | |
PCI: Avoid FLR and SBR on Intel DG1 0x4905 graphics adapters
DRM CI consistently reports failing device reset attempts on Intel DG1
discrete graphics adapters. Manual reproduction attempts allowed to narrow
down the scope of that problem to a specific revision of that hardware, SKU
8086:4905. It has been confirmed that both reset methods claimed by the
device, i.e., FLR and Secondary Bus Reset, suffer from that issue.
Since consecutively failing device resets may lead to system hangs, disable
both useless reset methods. A respective CI test will then be skipped
instead of aborting whole CI jobs.
Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/11814
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com>
Link: https://patch.msgid.link/20260907090249.1348552-2-janusz.krzysztofik@linux.intel.com
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
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