linux-stable.git/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c, branch v4.6.2 Linux kernel stable tree drm/amdgpu: add invalidate_page callback for userptrs 2016-03-21T15:52:14+00:00 Christian König christian.koenig@amd.com 2016-03-18T18:29:52+00:00 ae20f12d2de6629ee6f679ccf22f9b7b209c464d Otherwise we can run into problems with the writeback code. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Otherwise we can run into problems with the writeback code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Revert "remove the userptr rmn->lock" 2016-03-21T15:52:14+00:00 Christian König christian.koenig@amd.com 2016-03-18T18:29:51+00:00 0d2b42b0bdba45c82d29d794ea30a4c90e3f4098 This reverts commit c02196834456f2d5fad334088b70e98ce4967c34. In the meantime we moved get_user_pages() outside of the reservation lock, so that shouldn't be an issue any more Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
This reverts commit c02196834456f2d5fad334088b70e98ce4967c34.

In the meantime we moved get_user_pages() outside of the reservation lock,
so that shouldn't be an issue any more

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Don't call interval_tree_remove in amdgpu_mn_destroy 2016-02-17T21:10:56+00:00 Felix Kuehling Felix.Kuehling@amd.com 2016-02-16T20:31:30+00:00 390be2824fa4211c2e973c69b72e04000559bba3 rbtree_postorder_for_each_entry_safe can skip over some entries if the tree is rebalanced in interval_tree_remove. interval_tree_remove is also redundant when the tree is just about to be freed. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> 
rbtree_postorder_for_each_entry_safe can skip over some entries if
the tree is rebalanced in interval_tree_remove. interval_tree_remove
is also redundant when the tree is just about to be freed.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
drm/amdgpu: Fix race condition in amdgpu_mn_unregister 2016-02-17T21:10:42+00:00 Felix Kuehling Felix.Kuehling@amd.com 2016-02-16T20:29:23+00:00 b8ea3783467586246d0b2b08f2e3f42853219d94 Exchange locking order of adev->mn_lock and mm_sem, so that rmn->mm->mmap_sem can be taken safely, protected by adev->mn_lock, when amdgpu_mn_destroy runs concurrently. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> 
Exchange locking order of adev->mn_lock and mm_sem, so that
rmn->mm->mmap_sem can be taken safely, protected by adev->mn_lock,
when amdgpu_mn_destroy runs concurrently.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
drm/amdgpu: Fix race condition in MMU notifier release 2016-02-16T22:17:14+00:00 Felix Kuehling Felix.Kuehling@amd.com 2016-01-14T05:35:08+00:00 fa5b5000308136ad61a33126d8ad380cf1fef016 The release notifier can get called a second time from mmu_notifier_unregister depending on a race between __mmu_notifier_release and amdgpu_mn_destroy. Use mmu_notifier_unregister_no_release to avoid this. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> 
The release notifier can get called a second time from
mmu_notifier_unregister depending on a race between
__mmu_notifier_release and amdgpu_mn_destroy. Use
mmu_notifier_unregister_no_release to avoid this.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
drm/amdgpu: remove the userptr rmn->lock 2016-02-12T20:32:07+00:00 Christian König christian.koenig@amd.com 2016-02-09T15:13:37+00:00 c41d271d751ea023f67f1ea755e144b49079b6d5 Avoid a lock inversion problem by just using the mmap_sem to protect the entries of the intervall tree. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> 
Avoid a lock inversion problem by just using the mmap_sem to
protect the entries of the intervall tree.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
drm/amdgpu: fix issue with overlapping userptrs 2016-02-10T19:16:43+00:00 Christian König christian.koenig@amd.com 2016-02-08T09:57:22+00:00 d7006964d46d76930a44e14f1aae401ccb1797da Otherwise we could try to evict overlapping userptr BOs in get_user_pages(), leading to a possible circular locking dependency. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> 
Otherwise we could try to evict overlapping userptr BOs in get_user_pages(),
leading to a possible circular locking dependency.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: fix userptr lockup 2015-06-04T01:03:26+00:00 Christian König christian.koenig@amd.com 2015-05-04T11:20:36+00:00 a961ea7349d08d5962b6a619f2c2cca670da41ed Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Monk Liu <monk.liu@amd.com> 
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
drm/amdgpu: fix error check issue in amdgpu_mn_invalidate_range_start 2015-06-04T01:03:20+00:00 Jack Xiao Jack.Xiao@amd.com 2015-04-27T05:45:40+00:00 7ab7e8a4096d2af80613113ae4bea497b4f0baf5 Signed-off-by: Jack Xiao <Jack.Xiao@amd.com> Reviewed-by: Monk Liu <monk.liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: add core driver (v4) 2015-06-04T01:03:15+00:00 Alex Deucher alexander.deucher@amd.com 2015-04-20T20:55:21+00:00 d38ceaf99ed015f2a0b9af3499791bd3a3daae21 This adds the non-asic specific core driver code. v2: remove extra kconfig option v3: implement minor fixes from Fengguang Wu v4: fix cast in amdgpu_ucode.c Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Jammy Zhou <Jammy.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
This adds the non-asic specific core driver code.

v2: remove extra kconfig option
v3: implement minor fixes from Fengguang Wu
v4: fix cast in amdgpu_ucode.c

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>