[Mesa-dev] [PATCH 1/2] radeonsi: set a per-buffer flag that disables inter-process sharing (v4)

[Michel Dänzer]

On 29/08/17 11:47 PM, Christian König wrote:
> From: Marek Olšák <marek.olsak at amd.com>
> 
> For lower overhead in the CS ioctl.
> Winsys allocators are not used with interprocess-sharable resources.
> 
> v2: It shouldn't crash anymore, but the kernel will reject the new flag.
> v3 (christian): Rename the flag, avoid sending those buffers in the BO list.
> v4 (christian): Remove setting the kernel flag for now

This change seems to have caused a GPU hang when running piglit on my
Kaveri with the radeon kernel driver. Haven't been able to isolate it to
a specific test, seems to only happen when running multiple tests
concurrently. There's a GPUVM fault before the hang, I suspect it's related:

radeon 0000:00:01.0: GPU fault detected: 146 0x0ae6760c
radeon 0000:00:01.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x000001D7
radeon 0000:00:01.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0607600C
VM fault (0x0c, vmid 3) at page 471, read from 'CPF' (0x43504600) (118)


Any ideas?


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer