diff options
Diffstat (limited to 'arch/um/include/asm/pgtable.h')
| -rw-r--r-- | arch/um/include/asm/pgtable.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h index 02db81b7b86..58da2480a7f 100644 --- a/arch/um/include/asm/pgtable.h +++ b/arch/um/include/asm/pgtable.h @@ -47,6 +47,7 @@ extern unsigned long end_iomem; #define VMALLOC_OFFSET (__va_space) #define VMALLOC_START ((end_iomem + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1)) +#define PKMAP_BASE ((FIXADDR_START - LAST_PKMAP * PAGE_SIZE) & PMD_MASK) #ifdef CONFIG_HIGHMEM # define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE) #else @@ -355,4 +356,11 @@ extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr); #include <asm-generic/pgtable.h> +/* Clear a kernel PTE and flush it from the TLB */ +#define kpte_clear_flush(ptep, vaddr) \ +do { \ + pte_clear(&init_mm, (vaddr), (ptep)); \ + __flush_tlb_one((vaddr)); \ +} while (0) + #endif |