x86: fix some bugs about EFI runtime code mapping

This patch fixes some bugs of making EFI runtime code executable.

- Use change_page_attr in i386 too. Because the runtime code may be
  mapped not through ioremap.

- If there is no _PAGE_NX in __supported_pte_mask, the change_page_attr
  is not called.

- Make efi_ioremap map pages as PAGE_KERNEL_EXEC_NOCACHE, because EFI runtime
  code may be mapped through efi_ioremap.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/asm-x86/efi.h b/include/asm-x86/efi.h
index 8380131ca542..9e08ae84795d 100644
--- a/include/asm-x86/efi.h
+++ b/include/asm-x86/efi.h
@@ -95,6 +95,5 @@ extern void *efi_ioremap(unsigned long offset, unsigned long size);
 extern void efi_reserve_bootmem(void);
 extern void efi_call_phys_prelog(void);
 extern void efi_call_phys_epilog(void);
-extern void runtime_code_page_mkexec(void);
 
 #endif