Chris Wilson e8c49fa968 drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU ... When we close the VMA, we unbind it from the ppgtt and tear down the page directory pointing at it. That may trigger us to return WC pages back to the system, requiring conversion back to WB which itself may sleep. That makes i915_vma_close() unsuitable for use inside the RCU read lock, which we need to hold to iterate the radixtree. The fix is quite simple, we can close all the VMA as we close the ppgtt, we only need to do that instead of closing them during destruction of the LUT. v2: Order between closing the LUT and the ppgtt is important; we use the vma inside the LUT as a means of retrieving the object, and so we must clear the LUT before freeing the VMA when closing the ppgtt. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103638 Fixes: 547da76b57 ("drm/i915: Hold rcu_read_lock when iterating over the radixtree (vma idr)") Fixes: d1b48c1e71 ("drm/i915: Replace execbuf vma ht with an idr") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Matthew Auld <matthew.william.auld@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171109085540.32264-1-chris@chris-wilson.co.uk Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> (cherry picked from commit 94dec87159) Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2017-11-09 16:18:37 +02:00
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drm	drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU	2017-11-09 16:18:37 +02:00
host1x	gpu: host1x: Fix incorrect comment for channel_request	2017-10-20 14:19:52 +02:00
ipu-v3	gpu: ipu-v3: pre: implement workaround for ERR009624	2017-10-11 12:04:24 +02:00
vga	vgaarb: Factor out EFI and fallback default device selection	2017-10-18 10:04:56 +02:00
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