diff options
| author |   Zhao Yakui <yakui.zhao@intel.com> | 2012-11-13 18:31:55 +0000 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2012-11-16 09:56:35 +1000 |
| commit | ac207ed2471150e06af0afc76e4becc701fa2733 (patch) | |
| tree | 348d030301979c30286c895a84f11a8e398a1761 /drivers | |
| parent | vmwgfx: return an -EFAULT if copy_to_user() fails (diff) | |
| download | linux-dev-ac207ed2471150e06af0afc76e4becc701fa2733.tar.xz linux-dev-ac207ed2471150e06af0afc76e4becc701fa2733.zip | |
ttm: Clear the ttm page allocated from high memory zone correctly
The TTM page can be allocated from high memory. In such case it is
wrong to use the page_address(page) as the virtual address for the high memory
page.
bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=50241
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_page_alloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index 860dc4813e99..bd2a3b40cd12 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -749,7 +749,10 @@ static int ttm_get_pages(struct page **pages, unsigned npages, int flags, /* clear the pages coming from the pool if requested */ if (flags & TTM_PAGE_FLAG_ZERO_ALLOC) { list_for_each_entry(p, &plist, lru) { - clear_page(page_address(p)); + if (PageHighMem(p)) + clear_highpage(p); + else + clear_page(page_address(p)); } } |