On 15/06/2022 16:27, Mauro Carvalho Chehab wrote:
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.
Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store")
Are there any real problems fixed or it's just a logical thing to do?
Not much harm tagging it as fixes in terms of process since it is tiny
but, again, wanting a clear picture.
Regards,
Tvrtko
Signed-off-by: Chris Wilson <[email protected]>
Cc: Fei Yang <[email protected]>
Cc: Andi Shyti <[email protected]>
Cc: [email protected]
Acked-by: Thomas Hellström <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
---
See [PATCH 0/6] 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 61b7ec5118f9..fb4fd5273ca4 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -1226,6 +1226,9 @@ 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);
