Am 2021-04-19 um 1:22 p.m. schrieb Alex Sierra: > 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: Alex Sierra <alex.sie...@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com> > --- > drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c > b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c > index 5715be6770ec..823a367990bf 100644 > --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c > +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c > @@ -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); > } > > } _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
