On 12/12/2019 16:04, Chris Wilson wrote:
As we use the active state to keep the vma alive while we are reading
its contents during GPU error capture, we need to mark the
context->state vma as active during execution if we want to include it
in the error state.
Reported-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
Fixes: b1e3177bd1d8 ("drm/i915: Coordinate i915_active with its own mutex")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_context.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c
index 61c39e943f69..f7e2f3af007a 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.c
+++ b/drivers/gpu/drm/i915/gt/intel_context.c
@@ -120,6 +120,10 @@ static int __context_pin_state(struct i915_vma *vma)
if (err)
return err;
+ err = i915_active_acquire(&vma->active);
+ if (err)
+ goto err_unpin;
+
/*
* And mark it as a globally pinned object to let the shrinker know
* it cannot reclaim the object until we release it.
@@ -128,11 +132,16 @@ static int __context_pin_state(struct i915_vma *vma)
vma->obj->mm.dirty = true;
return 0;
+
+err_unpin:
+ i915_vma_unpin(vma);
+ return err;
}
static void __context_unpin_state(struct i915_vma *vma)
{
i915_vma_make_shrinkable(vma);
+ i915_active_release(&vma->active);
__i915_vma_unpin(vma);
}
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