This is a note to let you know that I've just added the patch titled
ttm: Clear the ttm page allocated from high memory zone correctly
to the 3.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ttm-clear-the-ttm-page-allocated-from-high-memory-zone-correctly.patch
and it can be found in the queue-3.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From ac207ed2471150e06af0afc76e4becc701fa2733 Mon Sep 17 00:00:00 2001
From: Zhao Yakui <[email protected]>
Date: Tue, 13 Nov 2012 18:31:55 +0000
Subject: ttm: Clear the ttm page allocated from high memory zone correctly
From: Zhao Yakui <[email protected]>
commit ac207ed2471150e06af0afc76e4becc701fa2733 upstream.
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 <[email protected]>
Reviewed-by: Thomas Hellstrom <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/ttm/ttm_page_alloc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- 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 **p
/* 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));
}
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.6/ttm-clear-the-ttm-page-allocated-from-high-memory-zone-correctly.patch
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