Am 28.05.21 um 14:54 schrieb Nirmoy Das:
Flush gpu tlb in amdgpu_ttm_alloc_gart(). Also
don't flush gpu tlb after recovering each BO.
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 2 --
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 5 ++++-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index 5562b5c90c03..68d41063e120 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -329,8 +329,6 @@ int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
mb();
amdgpu_asic_flush_hdp(adev, NULL);
The memory barrier and HDP flush can be moved as well.
- for (i = 0; i < adev->num_vmhubs; i++)
- amdgpu_gmc_flush_gpu_tlb(adev, 0, i, 0);
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index c0aef327292a..e68b5dab84a4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -977,7 +977,7 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
struct ttm_placement placement;
struct ttm_place placements;
uint64_t addr, flags;
- int r;
+ int r, i;
if (bo->mem.start != AMDGPU_BO_INVALID_OFFSET)
return 0;
@@ -1014,6 +1014,9 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
return r;
}
+ for (i = 0; i < adev->num_vmhubs; i++)
+ amdgpu_gmc_flush_gpu_tlb(adev, 0, i, 0);
+
Probably best to make that a function in amdgpu_gart.c to keep the GART
functionality properly abstracted.
This can then be called from both amdgpu_gtt_mgr_recover() after
dropping the lock and here.
Regards,
Christian.
ttm_resource_free(bo, &bo->mem);
bo->mem = tmp;
}
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