Am 25.06.2018 um 16:41 schrieb Alex Deucher:
On Mon, Jun 25, 2018 at 9:33 AM, Zhou, David(ChunMing)
<[email protected]> wrote:
current amdgpu driver indeed always set GPU PAGE SIZE is 4096.
In fact, our gpu supports bigger page size like 64KB, just we don't use it.
I remeber previous amdsoc(old android kernel driver) used 64KB.
correct me if I'm wrong.
It's still 4k pages, but you can tweak the fragment size to make a TLB
entry cover multiple pages.
Yeah, but David is right you can also directly increase the GPU page
size. It's just that I'm pretty sure we will never ever support that :)
Anyway original patch is Reviewed-by: Christian König
<[email protected]>.
Christian.
Alex
send from Smartisan Pro
Michel D鋘zer <[email protected]> 于 2018年6月25日 下午5:10写道：
On 2018-06-25 03:56 AM, zhoucm1 wrote:
one question to you:
Did you consider the case that GPU_PAGE_SIZE > CPU_PAGE_SIZE?
That is never the case: AMDGPU_GPU_PAGE_SIZE is always 4096, and
PAGE_SIZE is always >= 4096 (an integer multiple of it).
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
_______________________________________________
amd-gfx mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
_______________________________________________
amd-gfx mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
_______________________________________________
amd-gfx mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
