x86, extable: Remove open-coded exception table entries in arch/x86/kernel/test_rodata.c

Remove open-coded exception table entries in arch/x86/kernel/test_rodata.c,
and replace them with _ASM_EXTABLE() macros; this will allow us to
change the format and type of the exception table entries.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: David Daney <david.daney@cavium.com>
Link: http://lkml.kernel.org/r/CA%2B55aFyijf43qSu3N9nWHEBwaGbb7T2Oq9A=9EyR=Jtyqfq_cQ@mail.gmail.com

arch/x86/kernel/test_rodata.c

@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <asm/cacheflush.h>
 #include <asm/sections.h>
+#include <asm/asm.h>
 
 int rodata_test(void)
 {
@@ -42,14 +43,7 @@ int rodata_test(void)
 		".section .fixup,\"ax\"\n"
 		"2:	jmp 1b\n"
 		".previous\n"
-		".section __ex_table,\"a\"\n"
-		"       .align 16\n"
-#ifdef CONFIG_X86_32
-		"	.long 0b,2b\n"
-#else
-		"	.quad 0b,2b\n"
-#endif
-		".previous"
+		_ASM_EXTABLE(0b,2b)
 		: [rslt] "=r" (result)
 		: [rodata_test] "r" (&rodata_test_data), [zero] "r" (0UL)
 	);