linux-kernel - [PATCH] x86-64: correct segment permission flags in linker script

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Date:	Fri, 04 Sep 2009 09:18:07 +0100
From:	"Jan Beulich" <JBeulich@...ell.com>
To:	<mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: [PATCH] x86-64: correct segment permission flags in linker
	 script

While these don't get actively used (afaict), it still doesn't hurt for
them to properly reflect what how respective segments will get mapped/
accessed.

Signed-off-by: Jan Beulich <jbeulich@...ell.com>

---
 arch/x86/kernel/vmlinux.lds.S |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.31-rc8/arch/x86/kernel/vmlinux.lds.S	2009-08-28 14:57:38.000000000 +0200
+++ 2.6.31-rc8-x86_64-segment-flags/arch/x86/kernel/vmlinux.lds.S	2009-09-03 11:39:08.000000000 +0200
@@ -45,9 +45,9 @@ PHDRS {
 	text PT_LOAD FLAGS(5);          /* R_E */
 	data PT_LOAD FLAGS(7);          /* RWE */
 #ifdef CONFIG_X86_64
-	user PT_LOAD FLAGS(7);          /* RWE */
+	user PT_LOAD FLAGS(5);          /* R_E */
 #ifdef CONFIG_SMP
-	percpu PT_LOAD FLAGS(7);        /* RWE */
+	percpu PT_LOAD FLAGS(6);        /* RW_ */
 #endif
 	init PT_LOAD FLAGS(7);          /* RWE */
 #endif



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