x86: EFI set_memory_x()/set_memory_uc() fixes

The EFI-runtime mapping code changed a larger memory area than it
should have, due to a pages/bytes parameter mixup.

noticed by Andi Kleen.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/efi.c

@@ -391,7 +391,7 @@ static void __init runtime_code_page_mkexec(void)
 		if (md->type != EFI_RUNTIME_SERVICES_CODE)
 			continue;
 
-		set_memory_x(md->virt_addr, md->num_pages << EFI_PAGE_SHIFT);
+		set_memory_x(md->virt_addr, md->num_pages);
 	}
 }
 
@@ -434,7 +434,7 @@ void __init efi_enter_virtual_mode(void)
 		}
 
 		if (!(md->attribute & EFI_MEMORY_WB))
-			set_memory_uc(md->virt_addr, size);
+			set_memory_uc(md->virt_addr, md->num_pages);
 
 		systab = (u64) (unsigned long) efi_phys.systab;
 		if (md->phys_addr <= systab && systab < end) {