Chris Wilson f6844a85e0 drm/i915/selftests: Replace opencoded clflush with drm_clflush_virt_range ... We occasionally see that the clflush prior to a read of GPU data is returning stale data, reminiscent of much earlier bugs fixed by adding a second clflush for serialisation. As drm_clflush_virt_range() already supplies the workaround, use it rather than open code the clflush instruction. References: 396f5d62d1 ("drm: Restore double clflush on the last partial cacheline") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180730075351.15569-3-chris@chris-wilson.co.uk		2018-07-30 10:33:21 +01:00
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drm	drm/i915/selftests: Replace opencoded clflush with drm_clflush_virt_range	2018-07-30 10:33:21 +01:00
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