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 <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
Cc: Richard Weinberger <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
This commit is contained in:
H. Peter Anvin 2014-05-04 10:00:49 -07:00
commit 197725de65
4 changed files with 7 additions and 3 deletions

View file

@ -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