From: Gerd Knorr <kraxel@suse.de>
To: xen-devel@lists.xensource.com
Subject: [patch] pae: nx support
Date: Wed, 22 Jun 2005 15:50:37 +0200 [thread overview]
Message-ID: <20050622135037.GA31640@bytesex> (raw)
Hi,
Below is a patch to enable nx for 32-bit PAE mode.
Gerd
Index: xen/include/asm-x86/x86_32/page-2level.h
===================================================================
--- xen.orig/include/asm-x86/x86_32/page-2level.h 2005-06-21 10:06:12.000000000 +0200
+++ xen/include/asm-x86/x86_32/page-2level.h 2005-06-22 14:09:50.000000000 +0200
@@ -46,6 +46,8 @@ typedef l2_pgentry_t root_pgentry_t;
* 12-bit flags = (pte[11:0])
*/
+#define _PAGE_NX 0U
+
/* Extract flags into 12-bit integer, or turn 12-bit flags into a pte mask. */
#define get_pte_flags(x) ((int)(x) & 0xFFF)
#define put_pte_flags(x) ((intpte_t)((x) & 0xFFF))
Index: xen/include/asm-x86/x86_32/page-3level.h
===================================================================
--- xen.orig/include/asm-x86/x86_32/page-3level.h 2005-06-21 10:06:12.000000000 +0200
+++ xen/include/asm-x86/x86_32/page-3level.h 2005-06-22 14:09:50.000000000 +0200
@@ -59,6 +59,8 @@ typedef l3_pgentry_t root_pgentry_t;
* 32-bit flags = (pte[63:44],pte[11:0])
*/
+#define _PAGE_NX (cpu_has_nx ? (1<<31) : 0)
+
/* Extract flags into 32-bit integer, or turn 32-bit flags into a pte mask. */
#define get_pte_flags(x) (((int)((x) >> 32) & ~0xFFF) | ((int)(x) & 0xFFF))
#define put_pte_flags(x) (((intpte_t)((x) & ~0xFFF) << 40) | ((x) & 0xFFF))
Index: xen/include/asm-x86/x86_32/page.h
===================================================================
--- xen.orig/include/asm-x86/x86_32/page.h 2005-06-21 10:06:12.000000000 +0200
+++ xen/include/asm-x86/x86_32/page.h 2005-06-22 14:09:50.000000000 +0200
@@ -7,8 +7,6 @@
#define VADDR_BITS 32
#define VADDR_MASK (~0UL)
-#define _PAGE_NX 0U
-
#include <xen/config.h>
#ifdef CONFIG_X86_PAE
# include <asm/x86_32/page-3level.h>
reply other threads:[~2005-06-22 13:50 UTC|newest]
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