From: Chris Wilson <[email protected]> Skip all further TLB invalidations once the device is wedged and had been reset, as, on such cases, it can no longer process instructions on the GPU and the user no longer has access to the TLB's in each engine.
That helps to reduce the performance regression introduced by TLB invalidate logic. Cc: [email protected] Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson <[email protected]> Cc: Fei Yang <[email protected]> Cc: Andi Shyti <[email protected]> Acked-by: Thomas Hellström <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> --- To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover. See [PATCH v2 00/21] at: https://lore.kernel.org/all/[email protected]/ drivers/gpu/drm/i915/gt/intel_gt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 1d84418e8676..5c55a90672f4 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -934,6 +934,9 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) if (I915_SELFTEST_ONLY(gt->awake == -ENODEV)) return; + if (intel_gt_is_wedged(gt)) + return; + if (GRAPHICS_VER(i915) == 12) { regs = gen12_regs; num = ARRAY_SIZE(gen12_regs); -- 2.36.1
