From: Jan Beulich <jbeulich@novell.com>
Date: Sat, 21 Jul 2007 15:10:26 +0000 (+0200)
Subject: i386: minor nx handling adjustment
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d5321abe6abd16e1749ccd89636415d39611e138;p=linux-beck.git

i386: minor nx handling adjustment

Constrain __supported_pte_mask and NX handling to just the PAE kernel.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 6e72f22e6bbd..e1a9a805c445 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -471,6 +471,10 @@ void zap_low_mappings (void)
 	flush_tlb_all();
 }
 
+int nx_enabled = 0;
+
+#ifdef CONFIG_X86_PAE
+
 static int disable_nx __initdata = 0;
 u64 __supported_pte_mask __read_mostly = ~_PAGE_NX;
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
@@ -500,9 +504,6 @@ static int __init noexec_setup(char *str)
 }
 early_param("noexec", noexec_setup);
 
-int nx_enabled = 0;
-#ifdef CONFIG_X86_PAE
-
 static void __init set_nx(void)
 {
 	unsigned int v[4], l, h;
diff --git a/include/asm-i386/page.h b/include/asm-i386/page.h
index 99cf5d3692a9..80ecc66b6d86 100644
--- a/include/asm-i386/page.h
+++ b/include/asm-i386/page.h
@@ -44,7 +44,6 @@
 extern int nx_enabled;
 
 #ifdef CONFIG_X86_PAE
-extern unsigned long long __supported_pte_mask;
 typedef struct { unsigned long pte_low, pte_high; } pte_t;
 typedef struct { unsigned long long pmd; } pmd_t;
 typedef struct { unsigned long long pgd; } pgd_t;