tree 5fb5838a8fd14fd40b699a1150685e6b18fea663
parent f03a314b4671407c4ff69a2d85e72413e8064c48
author Francisco Jerez <currojerez@riseup.net> 1261789776 +0100
committer Ben Skeggs <bskeggs@redhat.com> 1263164798 +1000

drm/nouveau: Use the software object for fencing.

This should avoid a race condition on nv0x, if we're doing it with
actual PGRAPH objects and a there's a fence within the FIFO DMA fetch
area when a context switch kicks in.

In that case we get an ILLEGAL_MTHD interrupt as expected, but the
values in PGRAPH_TRAPPED_ADDR aren't calculated correctly and they're
almost useless (e.g. you can see ILLEGAL_MTHDs for the now inactive
channel, with a wrong offset/data pair).

Signed-off-by: Francisco Jerez <currojerez@riseup.net>