Commit 5d1c70bb authored by Philip Yang's avatar Philip Yang Committed by Alex Deucher
Browse files

drm/amdgpu: Increase hmm range get pages timeout 



If hmm_range_fault returns -EBUSY, we should call hmm_range_fault again
to validate the remaining pages. On one system with NUMA auto balancing
enabled, hmm_range_fault takes 6 seconds for 1GB range because CPU
migrate the range one page at a time. To be safe, increase timeout value
to 1 second for 128MB range.

Signed-off-by: default avatarPhilip Yang <Philip.Yang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d728eda3

drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c

+2 −2
Original line number Diff line number Diff line
@@ -190,8 +190,8 @@ int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier, 
		pr_debug("hmm range: start = 0x%lx, end = 0x%lx",

			hmm_range->start, hmm_range->end);



		/* Assuming 512MB takes maxmium 1 second to fault page address */

		timeout = max((hmm_range->end - hmm_range->start) >> 29, 1UL);

		/* Assuming 128MB takes maximum 1 second to fault page address */

		timeout = max((hmm_range->end - hmm_range->start) >> 27, 1UL);

		timeout *= HMM_RANGE_DEFAULT_TIMEOUT;

		timeout = jiffies + msecs_to_jiffies(timeout);