On Fri, Jun 4, 2021 at 7:11 AM Christian König ckoenig.leichtzumerken@gmail.com wrote:

Am 03.06.21 um 18:09 schrieb Liam Howlett:

...

Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated.

Signed-off-by: Liam R. Howlett Liam.Howlett@Oracle.com

Reviewed-by: Christian König christian.koenig@amd.com

I'm fine to have this go through whatever tree makes sense.

Acked-by: Alex Deucher alexander.deucher@amd.com

...

---

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 7cb7ffdd1900..dfb5ca3f8da8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -680,9 +680,9 @@ int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages) return -ESRCH;

  mmap_read_lock(mm);

• vma = find_vma(mm, start);
  

• vma = vma_lookup(mm, start);
  mmap_read_unlock(mm);
  

• if (unlikely(!vma || start < vma->vm_start)) {
  

• if (unlikely(!vma)) {
          r = -EFAULT;
          goto out_putmm;
  }