Am 06.06.2018 um 16:12 schrieb Michel Dänzer:
On 2018-06-06 03:33 PM, Gabriel C wrote:
2018-06-06 14:19 GMT+02:00 Christian König <christian.koenig@xxxxxxx>:
Am 06.06.2018 um 14:08 schrieb Gabriel C:
2018-06-06 13:33 GMT+02:00 Christian König <christian.koenig@xxxxxxx>:
Am 06.06.2018 um 13:28 schrieb Gabriel C:
2018-04-11 7:02 GMT+02:00 Gabriel C <nix.or.die@xxxxxxxxx>:
[ 6.337838] [drm] PCIE GART of 2048M enabled (table at
0x00000000001D6000).
[ 6.338210] radeon 0000:21:00.0: (-12) create WB bo failed
[ 6.338214] radeon 0000:21:00.0: disabling GPU acceleration
...
I have the same Issue now on final 4.17.
Please file a bug report, and ideally bisect which commit(s)
introduced the issue(s).
http://ftp.frugalware.org/pub/other/people/crazy/radeon/dmesg-iommu-sr-iov-off.txt
http://ftp.frugalware.org/pub/other/people/crazy/radeon/dmesg-iommu-sr-iov-on.txt
Also nothing else changed in that setup just testing kernel 4.17.
That has nothing TODO with the driver nor the original bug you
reported. The
problem is that SME is active and that is currently not supported at
all
with a that hardware.
Ok .. so are we playing now kernel an AMD Hardware roulette on each
release ?
SME was like this in kernel 4.16.x here and all worked.
If that is true, again please bisect which commit broke it.
All the reports I've seen before this indicated that at least amdgpu
has never worked with SME (which BTW doesn't mean it's never going to
work or that we don't want to support it, just that as far as we know
it's currently not working).
At least in theory it should work when we use the coherent DMA allocator.
When that really worked before, so the most likely commit which broke
this is:
commit fd5fd480dd8fe4910546e7b080b3ae345e57fe9f
Author: Chunming Zhou <david1.zhou@xxxxxxx>
Date: Fri Feb 9 10:44:09 2018 +0800
drm/amdgpu: only enable swiotlb alloc when need v2
get the max io mapping address of system memory to see if it is over
our card accessing range.
v2: move checking later
Signed-off-by: Chunming Zhou <david1.zhou@xxxxxxx>
Reviewed-by: Monk Liu <monk.liu@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Currently looking into how we could somehow improve this detection.
Regards,
Christian.
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