1 files changed, 4 insertions, 17 deletions

diff --git a/arch/x86/kernel/efi_64.c b/arch/x86/kernel/efi_64.c
index a4ee29127fdf..22c3b7828c50 100644
--- a/arch/x86/kernel/efi_64.c
+++ b/arch/x86/kernel/efi_64.c
@@ -100,24 +100,11 @@ void __init efi_call_phys_epilog(void)
 
 void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size)
 {
-        static unsigned pages_mapped __initdata;
-        unsigned i, pages;
-        unsigned long offset;
+        unsigned long last_map_pfn;
 
-        pages = PFN_UP(phys_addr + size) - PFN_DOWN(phys_addr);
-        offset = phys_addr & ~PAGE_MASK;
-        phys_addr &= PAGE_MASK;
-
-        if (pages_mapped + pages > MAX_EFI_IO_PAGES)
+        last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
+        if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size)
                 return NULL;
 
-        for (i = 0; i < pages; i++) {
-                __set_fixmap(FIX_EFI_IO_MAP_FIRST_PAGE - pages_mapped,
-                             phys_addr, PAGE_KERNEL);
-                phys_addr += PAGE_SIZE;
-                pages_mapped++;
-        }
-
-        return (void __iomem *)__fix_to_virt(FIX_EFI_IO_MAP_FIRST_PAGE - \
-                                             (pages_mapped - pages)) + offset;
+        return (void __iomem *)__va(phys_addr);
 }