Undoes pageattr_32.c parts of
Not sure what the point of that change was anyways.
commit 11c9734cbcf4c5862260442a5d56dd4779799fcc
Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Date: Tue Jan 15 09:36:03 2008 +0100
patches/x86-pat-usable_only_map_i386.patch
i386: Map only usable memory in identity map. Reserved memory maps to a
zero page.
Signed-off-by: Andi Kleen <ak@suse.de>
---
arch/x86/mm/pageattr_32.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
Index: linux/arch/x86/mm/pageattr_32.c
===================================================================
--- linux.orig/arch/x86/mm/pageattr_32.c
+++ linux/arch/x86/mm/pageattr_32.c
@@ -55,11 +55,9 @@ split_large_page(unsigned long address,
/*
* page_private is used to track the number of entries in
* the page table page that have non standard attributes.
- * Count of 1 indicates page split by split_large_page(),
- * additional count indicates the number of pages with non-std attr.
*/
SetPagePrivate(base);
- page_private(base) = 1;
+ page_private(base) = 0;
address = __pa(address);
addr = address & LARGE_PAGE_MASK;
@@ -205,7 +203,7 @@ static int __change_page_attr(struct pag
save_page(kpte_page);
if (!PageReserved(kpte_page)) {
- if (cpu_has_pse && (page_private(kpte_page) == 1)) {
+ if (cpu_has_pse && (page_private(kpte_page) == 0)) {
paravirt_release_pt(page_to_pfn(kpte_page));
revert_page(kpte_page, address);
}
--
