[amdgpu] Is it possible to disable page tables and use the physical address directly in amdgpu

[Christian König]

Am 01.12.20 um 07:58 schrieb Smith John:
> Hello!
> I was trying to figure out the impact of gpu page tables on 
> applications' performance. I noticed that there are 16 vmids supported 
> by the hardware /Vega 10/. Is it possible to use physical address 
> directly in some vmids, or use physical address globally?

No. VMID0 is used by the kernel for jobs like copying things from A to B 
and even there we use the VM remapping functionality.

Regards,
Christian.

>
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