Commit 126bbd4a authored by Alex Sierra's avatar Alex Sierra Committed by Alex Deucher
Browse files

drm/amdgpu: extend xnack limit page fault timeout 



Extending this timeout will prevent IH from storm interrupts coming
from SDMA while a page fault is active. Currently, on Aldebaran,
handling that many interrupts can take a lot of CPU time
(up to 4 seconds).
This eventually causes timeouts in other tasks.

Signed-off-by: default avatarAlex Sierra <alex.sierra@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 502f0e28

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

+2 −0
Original line number Diff line number Diff line
@@ -1109,6 +1109,8 @@ static void sdma_v4_0_ctx_switch_enable(struct amdgpu_device *adev, bool enable) 
		if (adev->asic_type == CHIP_ARCTURUS &&

		    adev->sdma.instance[i].fw_version >= 14)

			WREG32_SDMA(i, mmSDMA0_PUB_DUMMY_REG2, enable);

		/* Extend page fault timeout to avoid interrupt storm */

		WREG32_SDMA(i, mmSDMA0_UTCL1_TIMEOUT, 0x00800080);

	}



}