[PATCH] i386: PARAVIRT: add kmap_atomic_pte for mapping highpte pages

[powerpc.git] / arch / i386 / mm / highmem.c

diff --git a/arch/i386/mm/highmem.c b/arch/i386/mm/highmem.c
index ac70d09..a1a21ab 100644 (file)
--- a/arch/i386/mm/highmem.c
+++ b/arch/i386/mm/highmem.c
@@ -26,7 +26,7 @@ void kunmap(struct page *page)
  * However when holding an atomic kmap is is not legal to sleep, so atomic
  * kmaps are appropriate for short, tight code paths only.
  */
-void *kmap_atomic(struct page *page, enum km_type type)
+void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
 {
        enum fixed_addresses idx;
        unsigned long vaddr;
@@ -41,12 +41,17 @@ void *kmap_atomic(struct page *page, enum km_type type)
                return page_address(page);
 
        vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-       set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
+       set_pte(kmap_pte-idx, mk_pte(page, prot));
        arch_flush_lazy_mmu_mode();
 
        return (void*) vaddr;
 }
 
+void *kmap_atomic(struct page *page, enum km_type type)
+{
+       return kmap_atomic_prot(page, type, kmap_prot);
+}
+
 void kunmap_atomic(void *kvaddr, enum km_type type)
 {
        unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;