It does now (I had a spinlock mishap).. which reminds me - how
do I test these patches with your vmwgfx driver? I've an old version
of VMWare Workstation 8, would that do?
Yes, that's a typical use-case. Or passing pages between an array of GPGPUs...OK, that should be no trouble - we would need to expose a functionThe swapping code back (so from swap to pool) does not seem toYes. If / when I do that, I might be adding a new backend function
distinguish it that much - it just allocates a new page - and
then copies from whatever was in the swap cache?
This is something you were thinking to do in the future I presume?
to put a ttm in an
"anonymous state", that is using only pages that can be inserted in
the swap cache or passed
around to other devices, and to put a ttm in a "device" state, that
copies it to device mappable pages.
call to "detach" the page from the TTM pool (which could mean
actually allocating a new page for the "other" device, and copying
it from the "source" to "other" and then freeing the "source).
I am thinking ... you hotplug an high-end radeon while the machine has
an ATI ES1000 in it, and want to move those pages to the new
card. The ATI ES1000 can only do up to 4GB, while the new fancy card
has no such limits (and perhaps does not want to use the TTM DMA
Is this what you had in mind?