On 5/28/21 9:30 PM, Zack Rusin wrote:
On 5/22/21 3:13 AM, Christian König wrote:
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.
Got ya. Yea, it's a little messy. I think it's correct. Those unique
numbers are just identifiers for the bo's but the actual memory for
them is regular system memory (e.g. we just tell our virtual hardware,
here's some guest system pages and here's a unique id that we'll be
using the refer to them).
Yes, allocating pages for that memory type is correct. The main
difference to other hardware here is that on other hardware those are
bound to gpu using a range in a translation table. With vmwgfx they are
bound using a slot with a unique integer..
/Thomas
