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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-22 10:41:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-22 10:41:36 -0700
commit73d5a8675f32b8e22e11773b314324316f920192 (patch)
treed353161d8d162afd6fa90267c96a902a0a9e85be /arch/x86/mm/init_64.c
parente77277dfe28baed73b6fd7c66c3fb44580a3dac1 (diff)
parentd8aa5ec3382e6a545b8f25178d1e0992d4927f19 (diff)
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: xen: update mask_rw_pte after kernel page tables init changes xen: set max_pfn_mapped to the last pfn mapped x86: Cleanup highmap after brk is concluded Fix up trivial onflict (added header file includes) in arch/x86/mm/init_64.c
Diffstat (limited to 'arch/x86/mm/init_64.c')
-rw-r--r--arch/x86/mm/init_64.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 0aa34669ed3..2362b646178 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -52,6 +52,7 @@
#include <asm/cacheflush.h>
#include <asm/init.h>
#include <asm/uv/uv.h>
+#include <asm/setup.h>
static int __init parse_direct_gbpages_off(char *arg)
{
@@ -294,18 +295,18 @@ void __init init_extra_mapping_uc(unsigned long phys, unsigned long size)
* to the compile time generated pmds. This results in invalid pmds up
* to the point where we hit the physaddr 0 mapping.
*
- * We limit the mappings to the region from _text to _end. _end is
- * rounded up to the 2MB boundary. This catches the invalid pmds as
+ * We limit the mappings to the region from _text to _brk_end. _brk_end
+ * is rounded up to the 2MB boundary. This catches the invalid pmds as
* well, as they are located before _text:
*/
void __init cleanup_highmap(void)
{
unsigned long vaddr = __START_KERNEL_map;
- unsigned long end = roundup((unsigned long)_end, PMD_SIZE) - 1;
+ unsigned long vaddr_end = __START_KERNEL_map + (max_pfn_mapped << PAGE_SHIFT);
+ unsigned long end = roundup((unsigned long)_brk_end, PMD_SIZE) - 1;
pmd_t *pmd = level2_kernel_pgt;
- pmd_t *last_pmd = pmd + PTRS_PER_PMD;
- for (; pmd < last_pmd; pmd++, vaddr += PMD_SIZE) {
+ for (; vaddr + PMD_SIZE - 1 < vaddr_end; pmd++, vaddr += PMD_SIZE) {
if (pmd_none(*pmd))
continue;
if (vaddr < (unsigned long) _text || vaddr > end)