[Bug 93721] Tonga [drm:amdgpu_vm_init [amdgpu]] *ERROR* Cannot allocate memory for page table array

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93721

            Bug ID: 93721
           Summary: Tonga [drm:amdgpu_vm_init [amdgpu]] *ERROR* Cannot
                    allocate memory for page table array
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: adf.lists at gmail.com

Created attachment 121052
  --> https://bugs.freedesktop.org/attachment.cgi?id=121052&action=edit
dmesg showing mem  fail

Been testing the latest agd5f drm-next-4.5 with powerplay=1.

Nothings changed from previously reported issues, uvd still breaks powerplay
and it's self, lockups with uvd possible.

This particular boot I hadn't touched uvd or anything gl excepting glamor is
always used.

Was testing/benching vce which was going OK (apart from previously reported
issue with UHD content).

After I had finished testing I turned auto/down GPU/CPU which had been set
high.

memclk stayed stuck high. I then tried glxgears just to see if it would change
the clocks.

I got - 

libGL error: failed to open drm device: Cannot allocate memory
libGL error: failed to load driver: radeonsi

tried as user = same, tried glxinfo = same, did free =

              total        used        free      shared  buff/cache   available
Mem:        8139284      244600      340524     1519216     7554160     6314420
Swap:       4605948           0     4605948

Looks OK but as I had 1.5Gig in a ramdisk I deleted the file and then gl
started working again - strange as I've done many tests with 6Gig in there and
it just doesn't look like I was low on mem. Maybe you can see why from the
memdumps in the dmesg. 

I haven't been able to reproduce this.

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