Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [2/36] Undo pageattr_32 portions of 11c9734cbcf4c5862260442a5d56dd4779799fcc | Date | Wed, 16 Jan 2008 23:15:00 +0100 (CET) |
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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); }
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