diff options
| author | Andi Kleen <ak@suse.de> | 2008-02-04 16:48:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-02-04 16:48:08 +0100 |
| commit | bde1965ce8c63e17cc284e1af616c85aba483f11 (patch) | |
| tree | d66904605ba3a1d8248c9a14cd1f70d49985b3e2 | |
| parent | x86: switch pci-gart over to using set_memory_np() instead of clear_kernel_ma... (diff) | |
| download | linux-bde1965ce8c63e17cc284e1af616c85aba483f11.tar.xz linux-bde1965ce8c63e17cc284e1af616c85aba483f11.zip | |
x86: remove now unused clear_kernel_mapping
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/x86/mm/init_64.c | 43 | ||||
| -rw-r--r-- | include/asm-x86/pgtable_64.h | 1 |
2 files changed, 0 insertions, 44 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index b7a7992c28b6..5855449ce7aa 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -435,49 +435,6 @@ void __init paging_init(void) #endif /* - * Unmap a kernel mapping if it exists. This is useful to avoid - * prefetches from the CPU leading to inconsistent cache lines. - * address and size must be aligned to 2MB boundaries. - * Does nothing when the mapping doesn't exist. - */ -void __init clear_kernel_mapping(unsigned long address, unsigned long size) -{ - unsigned long end = address + size; - - BUG_ON(address & ~PMD_PAGE_MASK); - BUG_ON(size & ~PMD_PAGE_MASK); - - for (; address < end; address += PMD_PAGE_SIZE) { - pgd_t *pgd = pgd_offset_k(address); - pud_t *pud; - pmd_t *pmd; - - if (pgd_none(*pgd)) - continue; - - pud = pud_offset(pgd, address); - if (pud_none(*pud)) - continue; - - pmd = pmd_offset(pud, address); - if (!pmd || pmd_none(*pmd)) - continue; - - if (!(pmd_val(*pmd) & _PAGE_PSE)) { - /* - * Could handle this, but it should not happen - * currently: - */ - printk(KERN_ERR "clear_kernel_mapping: " - "mapping has been split. will leak memory\n"); - pmd_ERROR(*pmd); - } - set_pmd(pmd, __pmd(0)); - } - __flush_tlb_all(); -} - -/* * Memory hotplug specific functions */ void online_page(struct page *page) diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h index 6e615a103c2f..5c86cff3ee79 100644 --- a/include/asm-x86/pgtable_64.h +++ b/include/asm-x86/pgtable_64.h @@ -21,7 +21,6 @@ extern pgd_t init_level4_pgt[]; #define swapper_pg_dir init_level4_pgt extern void paging_init(void); -extern void clear_kernel_mapping(unsigned long addr, unsigned long size); #endif /* !__ASSEMBLY__ */ |