x86/compat: Define ARCH_WANT_OLD_COMPAT_IPC only for 32-bit compat

x32 does not need CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1434974121-32575-11-git-send-email-brgerst@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 55bced1..6e910ba 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2517,6 +2517,7 @@ config IA32_EMULATION
        select BINFMT_ELF
        select COMPAT_BINFMT_ELF
        select HAVE_UID16
+       select ARCH_WANT_OLD_COMPAT_IPC
        ---help---
          Include code to run legacy 32-bit programs under a
          64-bit kernel. You should likely turn this on, unless you're
@@ -2544,7 +2545,6 @@ config X86_X32
 config COMPAT
        def_bool y
        depends on IA32_EMULATION || X86_X32
-       select ARCH_WANT_OLD_COMPAT_IPC
 
 if COMPAT
 config COMPAT_FOR_U64_ALIGNMENT