linux-kernel - [PATCH] x86: Use v8086_mode helper, trivial unification

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Date:	Thu, 17 Jan 2008 15:04:38 -0800
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] x86: Use v8086_mode helper, trivial unification

Use v8086_mode inline in fault_32.c, no functional change
also ifdef the section for 32-bit only and add to fault_64.c

Signed-off-by: Harvey Harrison <harvey.harrison@...il.com>
---
 arch/x86/mm/fault_32.c |    4 +++-
 arch/x86/mm/fault_64.c |   11 +++++++++++
 2 files changed, 14 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/fault_32.c b/arch/x86/mm/fault_32.c
index 77915ac..6d8a0bb 100644
--- a/arch/x86/mm/fault_32.c
+++ b/arch/x86/mm/fault_32.c
@@ -547,14 +547,16 @@ good_area:
 	else
 		tsk->min_flt++;
 
+#ifdef CONFIG_X86_32
 	/*
 	 * Did it hit the DOS screen memory VA from vm86 mode?
 	 */
-	if (regs->flags & VM_MASK) {
+	if (v8086_mode(regs)) {
 		unsigned long bit = (address - 0xA0000) >> PAGE_SHIFT;
 		if (bit < 32)
 			tsk->thread.screen_bitmap |= 1 << bit;
 	}
+#endif
 	up_read(&mm->mmap_sem);
 	return;
 
diff --git a/arch/x86/mm/fault_64.c b/arch/x86/mm/fault_64.c
index 84531d8..8393275 100644
--- a/arch/x86/mm/fault_64.c
+++ b/arch/x86/mm/fault_64.c
@@ -551,6 +551,17 @@ good_area:
 		tsk->maj_flt++;
 	else
 		tsk->min_flt++;
+
+#ifdef CONFIG_X86_32
+	/*
+	 * Did it hit the DOS screen memory VA from vm86 mode?
+	 */
+	if (v8086_mode(regs)) {
+		unsigned long bit = (address - 0xA0000) >> PAGE_SHIFT;
+		if (bit < 32)
+			tsk->thread.screen_bitmap |= 1 << bit;
+	}
+#endif
 	up_read(&mm->mmap_sem);
 	return;
 
-- 
1.5.4.rc2.1164.g6451



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