x86, espfix: Make espfix64 a Kconfig option, fix UML

Make espfix64 a hidden Kconfig option.  This fixes the x86-64 UML
build which had broken due to the non-existence of init_espfix_bsp()
in UML: since UML uses its own Kconfig, this option does not appear in
the UML build.

This also makes it possible to make support for 16-bit segments a
configuration option, for the people who want to minimize the size of
the kernel.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Richard Weinberger <richard@nod.at>
Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com

1 files changed, 1 insertions, 1 deletions

diff --git a/init/main.c b/init/main.c
index 70fc00e7db06..58c132d7de4b 100644
--- a/init/main.c
+++ b/init/main.c
@@ -617,7 +617,7 @@ asmlinkage void __init start_kernel(void)
         if (efi_enabled(EFI_RUNTIME_SERVICES))
                 efi_enter_virtual_mode();
 #endif
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_ESPFIX64
         /* Should be run before the first non-init thread is created */
         init_espfix_bsp();
 #endif