kernel/linux.git/drivers/gpu/drm/ttm, branch v3.13.3

drm/ttm: Fix swapin regression

2013-12-23T00:33:07+00:00

Commit "drm/ttm: Don't move non-existing data" didn't take the swapped-out corner case into account. This patch corrects that. Fixes blank screen after attempted suspend / hibernate on vmwgfx. Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie

drm/ttm: Fix accesses through vmas with only partial coverage

2013-12-16T18:08:35+00:00

VMAs covering a bo but that didn't start at the same address space offset as the bo they were mapping were incorrectly generating SEGFAULT errors in the fault handler. Reported-by: Joseph Dolinak Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz Cc: stable@vger.kernel.org

Merge branch 'ttm-fixes-3.13' of git://people.freedesktop.org/~thomash/linux into drm-fixes

2013-11-21T08:46:56+00:00

The set_need_resched() removal fix and yet another fix in ttm_bo_move_memcpy(). * 'ttm-fixes-3.13' of git://people.freedesktop.org/~thomash/linux: drm/ttm: Remove set_need_resched from the ttm fault handler drm/ttm: Don't move non-existing data

drm/ttm: Remove set_need_resched from the ttm fault handler

2013-11-20T11:46:54+00:00

Addresses "[BUG] completely bonkers use of set_need_resched + VM_FAULT_NOPAGE". In the first occurence it was used to try to be nice while releasing the mmap_sem and retrying the fault to work around a locking inversion. The second occurence was never used. There has been some discussion whether we should change the locking order to mmap_sem -> bo_reserve. This patch doesn't address that issue, and leaves that locking order undefined. The solution that we release the mmap_sem if tryreserve fails and wait for the buffer to become unreserved is something we want in any case, and follows how the core vm system waits for pages to be come unlocked while releasing the mmap_sem. The code also outlines what needs to be changed if we want to establish the locking order as mmap_sem -> bo::reserve. One slight issue that remains with this code is that the fault handler might be prone to starvation if another thread countinously reserves the buffer. IMO that usage pattern is highly unlikely. Signed-off-by: Thomas Hellstrom

drm/ttm: Don't move non-existing data

2013-11-20T11:43:28+00:00

If ttm_bo_move_memcpy was instructed to move a non-populated ttm to io memory, it would first populate the ttm, then move the data and then destroy the ttm. That's stupid. However, some drivers might have relied on this to clear io memory from old stuff. So instead of a NOP, which would be the most efficient, just clear the destination. Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz

drm/ttm: Add a minimal prime implementation for ttm base objects

2013-11-18T08:46:41+00:00

Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz

drm/ttm: Allow execbuf util reserves without ticket

2013-11-18T08:38:52+00:00

If no reservation ticket is given to the execbuf reservation utilities, try reservation with non-blocking semantics. This is intended for eviction paths that use the execbuf reservation utilities for convenience rather than for deadlock avoidance. Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz

Merge branch 'ttm-next-3.13' of git://people.freedesktop.org/~thomash/linux into drm-next

2013-11-13T23:52:10+00:00

The page-prot bit fix. * 'ttm-next-3.13' of git://people.freedesktop.org/~thomash/linux: drm/ttm: Fix vma page_prot bit manipulation

drm/ttm: Fix vma page_prot bit manipulation

2013-11-13T07:55:31+00:00

Fix a long-standing TTM issue where we manipulated the vma page_prot bits while mmap_sem was taken in read mode only. We now make a local copy of the vma structure which we pass when we set the ptes. Signed-off-by: Thomas Hellstrom Reviewed-by: Jerome Glisse

Merge branch 'ttm-next-3.13' of git://people.freedesktop.org/~thomash/linux into drm-next

2013-11-07T02:22:10+00:00

- A couple of fixes that never made it into fixes-3.12 - Make NO_EVICT bo's available for shrinkers when on delayed-delete list - Allow retrying page-faults that need to wait for GPU. * 'ttm-next-3.13' of git://people.freedesktop.org/~thomash/linux: drm/ttm: Fix memory type compatibility check drm/ttm: Fix ttm_bo_move_memcpy drm/ttm: Handle in-memory region copies drm/ttm: Make NO_EVICT bos available to shrinkers pending destruction drm/ttm: Allow vm fault retries