Re: [PATCH] drm/i915: Use i915_gem_object_ggtt_pin_ww for reloc_iomap

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On 11/05/2022 12:52, Maarten Lankhorst wrote:
Instead of its own path, use the common path when it doesn't result
in evicting any vma. This fixes the case where we don't wait for
binding.


https://gitlab.freedesktop.org/drm/intel/-/issues/5806

If I'm reading that correctly waiting for the bind doesn't seem to help?

Fixes: b5cfe6f7a6e1 ("drm/i915: Remove short-term pins from execbuf, v6.")
Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
Reported-by: Mateusz Jończyk <mat.jonczyk@xxxxx>
Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 498b458fd784..919d01082909 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -1262,14 +1262,12 @@ static void *reloc_iomap(struct i915_vma *batch,
  		 * Only attempt to pin the batch buffer to ggtt if the current batch
  		 * is not inside ggtt, or the batch buffer is not misplaced.
  		 */
-		if (!i915_is_ggtt(batch->vm)) {
+		if (!i915_is_ggtt(batch->vm) ||
+		    !i915_vma_misplaced(batch, 0, 0, PIN_MAPPABLE)) {
  			vma = i915_gem_object_ggtt_pin_ww(obj, &eb->ww, NULL, 0, 0,
  							  PIN_MAPPABLE |
  							  PIN_NONBLOCK /* NOWARN */ |
  							  PIN_NOEVICT);
-		} else if (i915_vma_is_map_and_fenceable(batch)) {
-			__i915_vma_pin(batch);
-			vma = batch;
  		}
if (vma == ERR_PTR(-EDEADLK))



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