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x86: cpa, micro-optimization

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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner 2008-02-04 16:48:10 +01:00 committed by Ingo Molnar
parent 87f7f8fe32
commit 7b610eec7a
1 changed files with 2 additions and 4 deletions
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6
arch/x86/mm/pageattr.c
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@ -237,6 +237,7 @@ static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
if (!SHARED_KERNEL_PMD) { if (!SHARED_KERNEL_PMD) {
struct page *page; struct page *page;
address = __pa(address);
list_for_each_entry(page, &pgd_list, lru) { list_for_each_entry(page, &pgd_list, lru) {
pgd_t *pgd; pgd_t *pgd;
pud_t *pud; pud_t *pud;
@ -351,7 +352,7 @@ out_unlock:
static int split_large_page(pte_t *kpte, unsigned long address) static int split_large_page(pte_t *kpte, unsigned long address)
{ {
unsigned long flags, addr, pfn, pfninc = 1; unsigned long flags, pfn, pfninc = 1;
gfp_t gfp_flags = GFP_KERNEL; gfp_t gfp_flags = GFP_KERNEL;
unsigned int i, level; unsigned int i, level;
pte_t *pbase, *tmp; pte_t *pbase, *tmp;
@ -374,8 +375,6 @@ static int split_large_page(pte_t *kpte, unsigned long address)
if (tmp != kpte) if (tmp != kpte)
goto out_unlock; goto out_unlock;
address = __pa(address);
addr = address & PMD_PAGE_MASK;
pbase = (pte_t *)page_address(base); pbase = (pte_t *)page_address(base);
#ifdef CONFIG_X86_32 #ifdef CONFIG_X86_32
paravirt_alloc_pt(&init_mm, page_to_pfn(base)); paravirt_alloc_pt(&init_mm, page_to_pfn(base));
@ -386,7 +385,6 @@ static int split_large_page(pte_t *kpte, unsigned long address)
if (level == PG_LEVEL_1G) { if (level == PG_LEVEL_1G) {
pfninc = PMD_PAGE_SIZE >> PAGE_SHIFT; pfninc = PMD_PAGE_SIZE >> PAGE_SHIFT;
pgprot_val(ref_prot) |= _PAGE_PSE; pgprot_val(ref_prot) |= _PAGE_PSE;
addr &= PUD_PAGE_MASK;
} }
#endif #endif