Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
x86: cpa, micro-optimization
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
authored by Thomas Gleixner and committed by Ingo Molnar 7b610eec 87f7f8fe
+2
-4
arch/x86/mm/pageattr.c
+2
-4
arch/x86/mm/pageattr.c
···
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if (!SHARED_KERNEL_PMD) {
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struct page *page;
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+
address = __pa(address);
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list_for_each_entry(page, &pgd_list, lru) {
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pgd_t *pgd;
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pud_t *pud;
···
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static int split_large_page(pte_t *kpte, unsigned long address)
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{
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-
unsigned long flags, addr, pfn, pfninc = 1;
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unsigned long flags, pfn, pfninc = 1;
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gfp_t gfp_flags = GFP_KERNEL;
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unsigned int i, level;
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pte_t *pbase, *tmp;
···
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if (tmp != kpte)
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goto out_unlock;
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-
address = __pa(address);
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-
addr = address & PMD_PAGE_MASK;
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pbase = (pte_t *)page_address(base);
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#ifdef CONFIG_X86_32
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paravirt_alloc_pt(&init_mm, page_to_pfn(base));
···
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if (level == PG_LEVEL_1G) {
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pfninc = PMD_PAGE_SIZE >> PAGE_SHIFT;
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pgprot_val(ref_prot) |= _PAGE_PSE;
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-
addr &= PUD_PAGE_MASK;
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}
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#endif
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