Otherwise we can't be sure that we won't end up with a bounce buffer.
Signed-off-by: Christian König
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index d21dd2
Reviewed-by: Alex Deucher
From: amd-gfx on behalf of Christian
König
Sent: Wednesday, February 20, 2019 8:46 AM
To: amd-gfx@lists.freedesktop.org
Subject: [PATCH] drm/amdgpu: disable userptr if swiotlb is active
Otherwise we can't be sure that we won
I guess we'll need something similar for KFD? I don't think we've ever
intentionally tested KFD with swiotlb. But I've seen some backtraces
with swiotlb in them before. I wonder how badly broken it is ...
Regards,
Felix
On 2019-02-20 8:46 a.m., Christian König wrote:
> Otherwise we can't be
Well in the worst case you could end up having a bounce buffer mapped
instead of the real page.
Christian.
Am 20.02.19 um 18:02 schrieb Kuehling, Felix:
I guess we'll need something similar for KFD? I don't think we've ever
intentionally tested KFD with swiotlb. But I've seen some backtraces
w
