linux-kernel - [PATCH 06/27] x86: single

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Message-Id: <20071125215951.1BEA526F8DE@magilla.localdomain>
Date:	Sun, 25 Nov 2007 13:59:51 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 06/27] x86: single_step segment macros


This cleans up the single-step code to use the asm/segment.h macros
for segment selector magic bits, rather than its own constant.

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 arch/x86/kernel/step.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c
index cb3c8bc..3b70f20 100644
--- a/arch/x86/kernel/step.c
+++ b/arch/x86/kernel/step.c
@@ -5,8 +5,6 @@
 #include <linux/mm.h>
 #include <linux/ptrace.h>
 
-#define LDT_SEGMENT 4
-
 unsigned long convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs)
 {
 	unsigned long addr, seg;
@@ -20,7 +18,7 @@ unsigned long convert_rip_to_linear(struct task_struct *child, struct pt_regs *r
 	 * TLS segments are used for data, and the PNPBIOS
 	 * and APM bios ones we just ignore here.
 	 */
-	if (seg & LDT_SEGMENT) {
+	if ((seg & SEGMENT_TI_MASK) == SEGMENT_LDT) {
 		u32 *desc;
 		unsigned long base;
 
-
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