On 6/9/21 2:20 PM, Matthew Auld wrote:
On 09/06/2021 13:16, Thomas Hellström wrote:
On 6/9/21 1:48 PM, Daniel Vetter wrote:
On Wed, Jun 09, 2021 at 08:34:27AM +0200, Thomas Hellström wrote:
A couple of patches from Chris which implement pipelined migration and
clears by atomically writing the PTEs in place before performing the
actual blit.
Some ww utilities mainly for the accompanying selftests added by
Thomas,
as well as modified the above patches for ww locking- and lmem
support.
The actual hook up to the i915 ttm backend is being worked on and not
included yet, so this is considered to be an early review opportunity.
v2:
- A couple of minor style fixes pointed out by Matthew Auld
- Export and use intel_engine_destroy_pinned_context() to address a
ls CI warning / failure.
Just to check my understanding of the plan: These are the new windowed
clear/blt functions which we plan to use everywhere, because less nasty
locking implications? And the clear/blt we currently have in
upstream will
be replaced?
Yes. These are for LMEM clearing and migration. It looks to me like
the other ones we have in upstream are actually unused except for
selftests. We're actually using CPU clearing for now.
If so would be nice if this patch set includes that replacement work (I
think right now all we have is the clear for lmem), including
updating of
selftests and stuff like that. Just to avoid having two ways to do the
same thing in the driver.
OK, I'll have a look at stripping the existing code. If we need it
moving forward, we can always re-add.
Some low hanging fruit would be all the client_blt stuff which can for
sure be deleted now.
What has the client_blt stuff been used for?
In any case, I need 25 commits for commit access to be granted.
/Thomas
