user/sven/linux.git/drivers/gpu/drm/ttm, branch v4.4.183

drm/ttm: check the return value of kzalloc

2018-03-03T09:19:44Z

[ Upstream commit 19d859a7205bc59ffc38303eb25ae394f61d21dc ] In the function ttm_page_alloc_init, kzalloc call is made for variable _manager, we need to check its return value, it may return NULL. Signed-off-by: Xiongwei Song Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

drm/ttm: Fix accounting error when fail to get pages for pool

2017-09-07T06:34:09Z

commit 9afae2719273fa1d406829bf3498f82dbdba71c7 upstream. When fail to get needed page for pool, need to put allocated pages into pool. But current code has a miscalculation of allocated pages, correct it. Signed-off-by: Xiangliang.Yu Reviewed-by: Christian König Reviewed-by: Monk Liu Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/ttm: fix use-after-free races in vm fault handling

2017-05-14T11:32:59Z

commit 3089c1df10e2931b1d72d2ffa7d86431084c86b3 upstream. The vm fault handler relies on the fact that the VMA owns a reference to the BO. However, once mmap_sem is released, other tasks are free to destroy the VMA, which can lead to the BO being freed. Fix two code paths where that can happen, both related to vm fault retries. Found via a lock debugging warning which flagged &bo->wu_mutex as locked while being destroyed. Fixes: cbe12e74ee4e ("drm/ttm: Allow vm fault retries") Signed-off-by: Nicolai Hähnle Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces

2017-04-12T10:38:33Z

commit fe25deb7737ce6c0879ccf79c99fa1221d428bf2 upstream. Previously, when a surface was opened using a legacy (non prime) handle, it was verified to have been created by a client in the same master realm. Relax this so that opening is also allowed recursively if the client already has the surface open. This works around a regression in svga mesa where opening of a shared surface is used recursively to obtain surface information. Signed-off-by: Thomas Hellstrom Reviewed-by: Sinclair Yeh Signed-off-by: Greg Kroah-Hartman

drm/ttm: Make sure BOs being swapped out are cacheable

2017-03-15T01:57:15Z

commit 239ac65fa5ffab71adf66e642750f940e7241d99 upstream. The current caching state may not be tt_cached, even though the placement contains TTM_PL_FLAG_CACHED, because placement can contain multiple caching flags. Trying to swap out such a BO would trip up the BUG_ON(ttm->caching_state != tt_cached); in ttm_tt_swapout. Signed-off-by: Michel Dänzer Reviewed-by: Thomas Hellstrom Reviewed-by: Christian König . Reviewed-by: Sinclair Yeh Signed-off-by: Christian König Signed-off-by: Greg Kroah-Hartman

drm/ttm: Make ttm_bo_mem_compat available

2016-07-27T16:47:35Z

commit 94477bff390aa4612d2332c8abafaae0a13d6923 upstream. There are cases where it is desired to see if a proposed placement is compatible with a buffer object before calling ttm_bo_validate(). Signed-off-by: Sinclair Yeh Reviewed-by: Thomas Hellstrom Signed-off-by: Greg Kroah-Hartman

drm/ttm: Fixed a read/write lock imbalance

2015-11-26T14:47:38Z

In ttm_write_lock(), the uninterruptible path should call __ttm_write_lock() not __ttm_read_lock(). This fixes a vmwgfx hang on F23 start up. syeh: Extracted this from one of Thomas' internal patches. Cc: Signed-off-by: Thomas Hellstrom Reviewed-by: Sinclair Yeh

drm/ttm: Fix memory space allocation v2

2015-09-15T07:57:01Z

In the event that TTM doesn't find a compatible memory type for the driver's first placement choice (placement without eviction), TTM returns -EINVAL without trying the driver's second choice. This causes problems on vmwgfx when VRAM is disabled before first modeset and during VT switches when fbdev is not enabled. Fix this by also trying the driver's second choice before returning -EINVAL. v2: Also check that man->use_type is true for the driver's second choice. Fixes a bug where disallowed memory types could be used. Signed-off-by: Thomas Hellstrom Reviewed-by: Brian Paul Reviewed-by: Sinclair Yeh

Merge tag 'v4.2-rc7' into drm-next

2015-08-17T04:13:53Z

Linux 4.2-rc7 Backmerge master for i915 fixes

drivers: gpu: Drop unlikely before IS_ERR(_OR_NULL)

2015-08-06T12:13:07Z

IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there is no need to do that again from its callers. Drop it. Signed-off-by: Viresh Kumar Reviewed-by: Sinclair Yeh Signed-off-by: Daniel Vetter