diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gem.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 993ab223b503..032736b429bf 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -290,7 +290,8 @@ int radeon_gem_userptr_ioctl(struct drm_device *dev, void *data, return -EACCES; /* reject unknown flag values */ - if (args->flags & ~RADEON_GEM_USERPTR_READONLY) + if (args->flags & ~(RADEON_GEM_USERPTR_READONLY | + RADEON_GEM_USERPTR_ANONONLY)) return -EINVAL; /* readonly pages not tested on older hardware */ diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index b20933fa35c6..12e37b1ddc40 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -538,6 +538,16 @@ static int radeon_ttm_tt_pin_userptr(struct ttm_tt *ttm) if (current->mm != gtt->usermm) return -EPERM; + if (gtt->userflags & RADEON_GEM_USERPTR_ANONONLY) { + /* check that we only pin down anonymous memory + to prevent problems with writeback */ + unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE; + struct vm_area_struct *vma; + vma = find_vma(gtt->usermm, gtt->userptr); + if (!vma || vma->vm_file || vma->vm_end < end) + return -EPERM; + } + do { unsigned num_pages = ttm->num_pages - pinned; uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE; |