[tip:x86/extable] x86, extable: Remove open-coded exception table entries in arch/x86/kernel/entry_64.S

[tip-bot for H. Peter Anvin]

Commit-ID:  d7abc0fa997972ddb6d3c403e03a6eefda0c0881
Gitweb:     http://git.kernel.org/tip/d7abc0fa997972ddb6d3c403e03a6eefda0c0881
Author:     H. Peter Anvin <hpa@xxxxxxxxx>
AuthorDate: Fri, 20 Apr 2012 12:19:50 -0700
Committer:  H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Fri, 20 Apr 2012 13:51:38 -0700

x86, extable: Remove open-coded exception table entries in arch/x86/kernel/entry_64.S

Remove open-coded exception table entries in arch/x86/kernel/entry_64.S,
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@xxxxxxxxx>
Cc: David Daney <david.daney@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/CA%2B55aFyijf43qSu3N9nWHEBwaGbb7T2Oq9A=9EyR=Jtyqfq_cQ@xxxxxxxxxxxxxx
---
 arch/x86/kernel/entry_64.S |   16 ++++------------
 1 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index cdc79b5..320852d 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -55,6 +55,7 @@
 #include <asm/paravirt.h>
 #include <asm/ftrace.h>
 #include <asm/percpu.h>
+#include <asm/asm.h>
 #include <linux/err.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
@@ -900,18 +901,12 @@ restore_args:
 
 irq_return:
 	INTERRUPT_RETURN
-
-	.section __ex_table, "a"
-	.quad irq_return, bad_iret
-	.previous
+	_ASM_EXTABLE(irq_return, bad_iret)
 
 #ifdef CONFIG_PARAVIRT
 ENTRY(native_iret)
 	iretq
-
-	.section __ex_table,"a"
-	.quad native_iret, bad_iret
-	.previous
+	_ASM_EXTABLE(native_iret, bad_iret)
 #endif
 
 	.section .fixup,"ax"
@@ -1181,10 +1176,7 @@ gs_change:
 	CFI_ENDPROC
 END(native_load_gs_index)
 
-	.section __ex_table,"a"
-	.align 8
-	.quad gs_change,bad_gs
-	.previous
+	_ASM_EXTABLE(gs_change,bad_gs)
 	.section .fixup,"ax"
 	/* running with kernelgs */
 bad_gs:
--
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