From: Ard Biesheuvel <[email protected]> Instead of using ioremap_cache(), which is slightly inappropriate for mapping firmware tables, and is not even allowed on ARM for mapping regions that are covered by a struct page, use memremap(), which was invented for this purpose, and will also reuse the existing kernel direct mapping if the requested region is covered by it.
Signed-off-by: Ard Biesheuvel <[email protected]> Signed-off-by: Matt Fleming <[email protected]> --- drivers/firmware/efi/arm-runtime.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c index 55a9ea041068..19283deac375 100644 --- a/drivers/firmware/efi/arm-runtime.c +++ b/drivers/firmware/efi/arm-runtime.c @@ -105,8 +105,7 @@ static int __init arm_enable_runtime_services(void) mapsize = efi.memmap.map_end - efi.memmap.map; - efi.memmap.map = (__force void *)ioremap_cache(efi.memmap.phys_map, - mapsize); + efi.memmap.map = memremap(efi.memmap.phys_map, mapsize, MEMREMAP_WB); if (!efi.memmap.map) { pr_err("Failed to remap EFI memory map\n"); return -ENOMEM; -- 2.7.3
