[PATCH libdrm 1/2] amdgpu: prevent an integer wraparound of cpu_map_count

[Marek Olšák]

On Tue, Oct 30, 2018, 4:20 AM Michel Dänzer <michel at daenzer.net> wrote:

> On 2018-10-29 10:15 p.m., Marek Olšák wrote:
> > You and I discussed this extensively internally a while ago. It's
> expected
> > and correct behavior. Mesa doesn't unmap some buffers and never will.
>
> It doesn't need to keep mapping the same buffer over and over again
> though, does it?
>

It doesnt map it again. It just doesnt unmap. So the next map call just
returns the pointer. It's correct to stop the counter wraparound.

Marek


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