redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

ttm: Clear the ttm page allocated from high memory zone correctly

Browse source 
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>
This commit is contained in:
Zhao Yakui 2012-11-13 18:31:55 +00:00 committed by Dave Airlie
parent 888155bbf6
commit ac207ed247
1 changed files with 4 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/gpu/drm/ttm/ttm_page_alloc.c
View file

@ -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));
}
}