x32: Warn and disable rather than error if binutils too old
If X32 is enabled in .config, but the binutils can't build it, issue a
warning and disable the feature rather than erroring out.
In order to support this, have CONFIG_X86_X32 be the option set in
Kconfig, and CONFIG_X86_X32_ABI be the option set by the Makefile when
it is enabled and binutils has been found to be functional.
Requested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: H. J. Lu <hjl.tools@gmail.com>
Link: http://lkml.kernel.org/r/1329696488-16970-1-git-send-email-hpa@zytor.com
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c9d6c9e..e2b38b4 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2175,7 +2175,7 @@
---help---
Support old a.out binaries in the 32bit emulation.
-config X86_X32_ABI
+config X86_X32
bool "x32 ABI for 64-bit mode (EXPERIMENTAL)"
depends on X86_64 && IA32_EMULATION && EXPERIMENTAL
---help---
@@ -2190,7 +2190,7 @@
config COMPAT
def_bool y
- depends on IA32_EMULATION || X86_X32_ABI
+ depends on IA32_EMULATION || X86_X32
config COMPAT_FOR_U64_ALIGNMENT
def_bool COMPAT