Commit a50fe707 authored by Eric Huang's avatar Eric Huang Committed by Alex Deucher
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drm/amdkfd: Only apply heavy-weight TLB flush on Aldebaran 



It is to workaround HW bug on other Asics and based on
reverting two commits back:
  drm/amdkfd: Add heavy-weight TLB flush after unmapping
  drm/amdkfd: Add memory sync before TLB flush on unmap

Signed-off-by: default avatarEric Huang <jinhuieric.huang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 3cd293a7

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

+17 −15
Original line number Diff line number Diff line
@@ -1570,7 +1570,9 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep, 
	}

	mutex_unlock(&p->mutex);



	err = amdgpu_amdkfd_gpuvm_sync_memory(dev->kgd, (struct kgd_mem *) mem, true);

	if (dev->device_info->asic_family == CHIP_ALDEBARAN) {

		err = amdgpu_amdkfd_gpuvm_sync_memory(dev->kgd,

				(struct kgd_mem *) mem, true);

		if (err) {

			pr_debug("Sync memory failed, wait interrupted by user signal\n");

			goto sync_memory_failed;
@@ -1586,7 +1588,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep, 
				continue;

			kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);

		}



	}

	kfree(devices_arr);



	return 0;