[RFC 1/7] compiler: Report x86 segment support

[Nadav Amit]

GCC v6+ supports x86 segment qualifiers (__seg_gs and __seg_fs). Define
COMPILER_HAS_X86_SEG_SUPPORT when it is supported.

Signed-off-by: Nadav Amit <namit@xxxxxxxxxx>
---
 include/linux/compiler-gcc.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index e8579412ad21..787b5971e41f 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -149,6 +149,10 @@
 #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1
 #endif
 
+#if GCC_VERSION >= 60000
+#define COMPILER_HAS_X86_SEG_SUPPORT 1
+#endif
+
 /*
  * Turn individual warnings and errors on and off locally, depending
  * on version.
-- 
2.17.1