Chris Wilson 44c2200afc drm/i915/gem: Flush coherency domains on first set-domain-ioctl ... Avoid skipping what appears to be a no-op set-domain-ioctl if the cache coherency state is inconsistent with our target domain. This also has the utility of using the population of the pages to validate the backing store. The danger in skipping the first set-domain is leaving the cache inconsistent and submitting stale data, or worse leaving the clean data in the cache and not flushing it to the GPU. The impact should be small as it requires a no-op set-domain as the very first ioctl in a particular sequence not found in typical userspace. Reported-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com> Fixes: 754a254427 ("drm/i915: Skip object locking around a no-op set-domain ioctl") Testcase: igt/gem_mmap_offset/blt-coherency Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Matthew Auld <matthew.william.auld@gmail.com> Cc: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com> Cc: <stable@vger.kernel.org> # v5.2+ Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201019203825.10966-1-chris@chris-wilson.co.uk		2020-10-22 08:26:57 +01:00
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drm	drm/i915/gem: Flush coherency domains on first set-domain-ioctl	2020-10-22 08:26:57 +01:00
host1x	gpu: host1x: debug: Dump push buffer state	2020-07-17 16:06:14 +02:00
ipu-v3	gpu: ipu-v3: image-convert: Wait for all EOFs before completing a tile	2020-07-20 15:16:05 +02:00
trace	…
vga	vgaarb: mark vga_tryget static	2020-08-01 11:28:17 +02:00
Makefile	…