[Mesa-dev] [PATCH 00/15] RadeonSI 32-bit GPU pointers

[Marek Olšák]

On Sat, Jan 6, 2018 at 5:51 PM, Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
> Hi Marek,
>
> actually I was on the verge to remove the 32bit VM support in libdrm because
> it clashes with HMM and SVM in general.
>
> Is it possible to set the upper 32bit of the 64bit address to some fixed
> value instead?

Yes, but not on radeon. radeon only has 8GB of virtual address space and
4GB on older kernels. I would have to change LLVM to set the high bits
differently on amdgpu but keep the high bits 0 on radeon.

Marek