Oscar Mateo 14d8ec544f drm/i915: Remove ctx->last_ring ... The original comment that introduced it said: commit 0009e46cd5 Author: Ben Widawsky <ben@bwidawsk.net> Date: Fri Dec 6 14:11:02 2013 -0800 drm/i915: Track which ring a context ran on Previously we dropped the association of a context to a ring. It is however very important to know which ring a context ran on (we could have reused the other member, but I was nitpicky). This is very important when we switch address spaces, which unlike context objects, do change per ring. As an example, if we have: RCS BCS ctx A ctx A ctx B ctx B Without tracking the last ring B ran on, we wouldn't know to switch the address space on BCS in the last row. But this is not really true, because we are already checking to != from (with "from" being = ring->last_context) and that should be enough to make sure we switch to the right address space. We would have a problem if we switched the context object for every ring (since then we would fail to do it in some situations) but we only switch it for the render ring, so we don't care. Signed-off-by: Oscar Mateo <oscar.mateo@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2014-06-18 21:42:42 +02:00
..
drm	drm/i915: Remove ctx->last_ring	2014-06-18 21:42:42 +02:00
host1x	gpu: host1x: Rename internal functions for clarity	2014-06-05 23:10:30 +02:00
ipu-v3	gpu: ipu-v3: Register the CSI modules	2014-06-04 11:07:12 +02:00
vga	vgaswitcheroo: switch the mux to the igp on power down when runpm is enabled	2014-06-02 10:25:08 -04:00
Makefile	gpu: ipu-v3: Move i.MX IPUv3 core driver out of staging	2014-06-04 11:06:52 +02:00