genesi/linux-legacy
1
0
Fork 0
mirror of https://github.com/genesi/linux-legacy.git synced 2026-05-06 20:25:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

ARM 5794/1 Flush the D-cache during copy_user_highpage()

Browse Source
This commit is contained in:
Matt Sealey
2010-10-28 01:42:05 -05:00
parent 9dda27bbe8
commit d55b6dcd76
1 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/mm/copypage-v6.c
View File

@@ -41,6 +41,16 @@ static void v6_copy_user_highpage_nonaliasing(struct page *to,
kfrom = kmap_atomic(from, KM_USER0);
kto = kmap_atomic(to, KM_USER1);
copy_page(kto, kfrom);
#ifdef CONFIG_HIGHMEM
/*
* kmap_atomic() doesn't set the page virtual address, and
* kunmap_atomic() takes care of cache flushing already.
*/
if (page_address(to) != NULL)
#endif
__cpuc_flush_dcache_page(kto);
kunmap_atomic(kto, KM_USER1);
kunmap_atomic(kfrom, KM_USER0);
}