x86/compat: Separate ia32 and x32 compat ABIs

The x32 ABI is now independent of the ia32 compat ABI.  Common
code is now conditional on CONFIG_COMPAT, but unshared code like
syscall entry, signal handling, and the VDSO are under separate
config options.

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/1434974121-32575-13-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 d823a3320c633e11af77b2d2581ec4d8e0ec6e55..aa94fd014fa2bbcf0de7f1105256ae844296d50e 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2530,7 +2530,7 @@ config IA32_AOUT
 
 config X86_X32
        bool "x32 ABI for 64-bit mode"
-       depends on X86_64 && IA32_EMULATION
+       depends on X86_64
        ---help---
          Include code to run binaries for the x32 native 32-bit ABI
          for 64-bit processors.  An x32 process gets access to the