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drm/amdgpu: always register an MMU notifier for userptr

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commit b39df63b16b64a3af42695acb9bc567aad144776 upstream.

Since switching to HMM we always need that because we no longer grab
references to the pages.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian König 2022-11-09 12:14:44 +01:00 committed by Greg Kroah-Hartman
parent 8d4ceb13da
commit 6f2c804647
1 changed files with 3 additions and 5 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
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@ -278,11 +278,9 @@ int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
if (r)
goto release_object;
if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
r = amdgpu_mn_register(bo, args->addr);
if (r)
goto release_object;
}
r = amdgpu_mn_register(bo, args->addr);
if (r)
goto release_object;
if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
down_read(&current->mm->mmap_sem);