Changes to let KFD use render node VMs

[Kuehling, Felix]

Hi David,

Compute contexts enable the compute power profile, and can use a different VM update mode from graphics contexts (SDMA vs. CPU). These differences are not going away. Not yet, anyway. If we start sharing VM address space between graphics and compute in the future, this will have to change. That is, these features would have to be controlled by other means than by the vm context.

Regards,
  Felix

________________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of zhoucm1 <zhoucm1 at amd.com>
Sent: Thursday, March 1, 2018 10:18:15 PM
To: Kuehling, Felix; amd-gfx at freedesktop.org; Koenig, Christian
Subject: Re: Changes to let KFD use render node VMs

Hi Felix,

Out of patches, Could I ask what the difference of  AMDGPU_VM_CONTEXT_COMPUTE/GFX is?

After you merge kfd_vm to amdgpu_vm, does the difference still exist?


Thanks,

David Zhou

On 2018年03月02日 06:58, Felix Kuehling wrote:

Hi Christian,

I have a working patch series against amd-kfg-staging that lets KFD use
VMs from render node FDs, as we discussed. There are two patches in that
series that touch amdgpu_vm.[ch] that I'd like your feedback on before I
commit the changes to amd-kfd-staging and include them in my upstream
patch series for KFD GPUVM support. See attached.

Thanks,
  Felix





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