x86: cpa, micro-optimization

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 4f03350..bb55a78 100644 (file)
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -237,6 +237,7 @@ static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
        if (!SHARED_KERNEL_PMD) {
                struct page *page;
 
+               address = __pa(address);
                list_for_each_entry(page, &pgd_list, lru) {
                        pgd_t *pgd;
                        pud_t *pud;
@@ -351,7 +352,7 @@ out_unlock:
 
 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;
        unsigned int i, level;
        pte_t *pbase, *tmp;
@@ -374,8 +375,6 @@ static int split_large_page(pte_t *kpte, unsigned long address)
        if (tmp != kpte)
                goto out_unlock;
 
-       address = __pa(address);
-       addr = address & PMD_PAGE_MASK;
        pbase = (pte_t *)page_address(base);
 #ifdef CONFIG_X86_32
        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) {
                pfninc = PMD_PAGE_SIZE >> PAGE_SHIFT;
                pgprot_val(ref_prot) |= _PAGE_PSE;
-               addr &= PUD_PAGE_MASK;
        }
 #endif