ttm_resource_manager::use_tt

[Christian König]

Hi Zack,

IIRC that was for the VMW_PL_GMR type, wasn't it?

As far as I have seen that backend was just giving out unique numbers 
and it looked questionable that we allocated pages for that.

E.g. when you set that flag then for each allocation we also allocate a 
TTM tt structure and a corresponding page.

Regards,
Christian.

Am 21.05.21 um 20:17 schrieb Zack Rusin:
> Hi, Christian.
>
> I was just going over some old patches and I was just looking at your 
> series introducing use_tt:
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.freedesktop.org%2Fseries%2F80078%2F&data=04%7C01%7Cchristian.koenig%40amd.com%7C95b3c758592d4f0c247c08d91c84b48c%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637572178561737650%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=5uZDVUi3W1WH29%2B2nE9uFUFZjQkKJyUxc6MwEce6SQ8%3D&reserved=0 
> and the change 
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.freedesktop.org%2Fpatch%2F382079%2F%3Fseries%3D80078%26rev%3D1&data=04%7C01%7Cchristian.koenig%40amd.com%7C95b3c758592d4f0c247c08d91c84b48c%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637572178561737650%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=5XWSt07%2FzlXDa0GH8hnwEulyCBNocB2fUJ6CLwzubbE%3D&reserved=0
>
> Do you happen to remember what was the worry behind the /* TODO: This 
> is most likely not correct */ in vmwgfx_ttm_buffer.c? I'm trying to 
> figure out if we need to address it.
>
> z