On 2021-06-30 6:03 p.m., Eric Huang wrote:
It is based on reverting two patches back.
drm/amdkfd: Make TLB flush conditional on mapping
drm/amdgpu: Add table_freed parameter to amdgpu_vm_bo_update
Signed-off-by: Eric Huang <jinhuieric.huang@xxxxxxx>
I'd prefer to put HW-specific workarounds in
amdgpu_amdkfd_gpuvm_map_memory_to_gpu.
Regards,
Felix
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index cfaa5f88e630..f859ee7e8c13 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1659,6 +1659,12 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
goto sync_memory_failed;
}
+ /* Only apply no TLB flush on Aldebaran to
+ * workaround regressions on other Asics
+ */
+ if (dev->device_info->asic_family != CHIP_ALDEBARAN)
+ table_freed = true;
+
/* Flush TLBs after waiting for the page table updates to complete */
if (table_freed) {
for (i = 0; i < args->n_devices; i++) {
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