On 2018-09-18 10:13 a.m., Christian König wrote:
Mhm, there is no more failed IB-test in there isn't it?

oh sorry I thought you wanted to test HEAD~ ... Attached is a log from the tip of drm-next

Tom


Christian.

Am 18.09.2018 um 16:09 schrieb Tom St Denis:
Disabling IOMMU in the BIOS resulted in a correct boot up...

Here's the log.

Tom

On 2018-09-18 9:58 a.m., Tom St Denis wrote:
Odd I couldn't even boot my system with the dGPU as primary after rebuilding the kernel.  It got hung up in the IOMMU driver (loads of AMD-Vi IOMMU errors) which I wasn't able to capture because it panic'ed before loading the network stack.

Bizarre.

I'll keep trying.

Tom

On 2018-09-18 9:35 a.m., Christian König wrote:
Am 18.09.2018 um 15:32 schrieb Tom St Denis:
On 2018-09-18 9:30 a.m., Christian König wrote:
Great, not sure if that is a good or a bad news.

Anyway going to revert the change for now. Does anybody volunteer to figure out why interrupts sometimes doesn't work correctly on Raven?

What does "doesn't work correctly?"  My workstation is a Raven1 (Ryzen 2400G) and other than the TTM bulk move issue has been perfectly stable (through suspend/resumes too I might add).

Anything I could test with my devel raven?

The problem seems to be that on some boards IH handling doesn't work as it should.

Can you try to disable the onboard graphics and try again?

If that still doesn't work there is a DRM_DEBUG in amdgpu_ih_process(), make that a DRM_ERROR and send me the resulting dmesg of loading amdgpu (but don't start any UMD).

Thanks,
Christian.



Tom


Christian.

Am 18.09.2018 um 15:27 schrieb Tom St Denis:
This commit:

[root@raven linux]# git bisect good
9b0df0937a852d299fbe42a5939c9a8a4cc83c55 is the first bad commit
commit 9b0df0937a852d299fbe42a5939c9a8a4cc83c55
Author: Christian König <[email protected]>
Date:   Tue Sep 18 10:38:09 2018 +0200

    drm/amdgpu: remove fence fallback

    DC doesn't seem to have a fallback path either.

    So when interrupts doesn't work any more we are pretty much busted no
    matter what.

    Signed-off-by: Christian König <[email protected]>
    Reviewed-by: Chunming Zhou <[email protected]>

Results in this:

[   24.334025] [drm] Initialized amdgpu 3.27.0 20150101 for 0000:07:00.0 on minor 1 [   24.335674] modprobe (3895) used greatest stack depth: 12600 bytes left [   26.272358] [drm:gfx_v8_0_ring_test_ib [amdgpu]] *ERROR* amdgpu: IB test timed out. [   26.272460] [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* amdgpu: failed testing IB on ring 9 (-110). [   26.407885] [drm:process_one_work] *ERROR* ib ring test failed (-110).
[   28.506708] fuse init (API version 7.27)

On init with my polaris/raven1 system.

Cheers,
Tom
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Attachment: amdgpu_ih_process2.log.gz
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