Commit ac207ed2 authored Nov 13, 2012 by Zhao Yakui Committed by Dave Airlie Nov 16, 2012

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>

parent 888155bb

drivers/gpu/drm/ttm/ttm_page_alloc.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -749,6 +749,9 @@ 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) {
		if (PageHighMem(p))
		clear_highpage(p);
		else
		clear_page(page_address(p));
		}
		}