summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--Documentation/kernel-parameters.txt3
-rw-r--r--arch/i386/kernel/cpu/transmeta.c1
-rw-r--r--include/linux/kernel.h6
-rw-r--r--include/linux/mm.h2
-rw-r--r--kernel/sysctl.c2
-rw-r--r--mm/memory.c10
6 files changed, 16 insertions, 8 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ac75b57..b874771 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1638,6 +1638,9 @@ running once the system is up.
Format:
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
+ norandmaps Don't use address space randomization
+ Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space
+
______________________________________________________________________
Changelog:
diff --git a/arch/i386/kernel/cpu/transmeta.c b/arch/i386/kernel/cpu/transmeta.c
index bdbeb77..7214c9b 100644
--- a/arch/i386/kernel/cpu/transmeta.c
+++ b/arch/i386/kernel/cpu/transmeta.c
@@ -1,4 +1,5 @@
#include <linux/kernel.h>
+#include <linux/mm.h>
#include <linux/init.h>
#include <asm/processor.h>
#include <asm/msr.h>
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b49affa..3b507bf 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -326,12 +326,6 @@ struct sysinfo {
/* Force a compilation error if condition is true */
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
-#ifdef CONFIG_SYSCTL
-extern int randomize_va_space;
-#else
-#define randomize_va_space 1
-#endif
-
/* Trap pasters of __FUNCTION__ at compile-time */
#define __FUNCTION__ (__func__)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 75e9f07..26e1663 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1051,5 +1051,7 @@ int shrink_slab(unsigned long scanned, gfp_t gfp_mask,
void drop_pagecache(void);
void drop_slab(void);
+extern int randomize_va_space;
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MM_H */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 71dd6f6..7654d55 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -126,8 +126,6 @@ extern int sysctl_hz_timer;
extern int acct_parm[];
#endif
-int randomize_va_space = 1;
-
static int parse_table(int __user *, int, void __user *, size_t __user *, void __user *, size_t,
ctl_table *, void **);
static int proc_doutsstring(ctl_table *table, int write, struct file *filp,
diff --git a/mm/memory.c b/mm/memory.c
index 2bee1f2..9abc600 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -82,6 +82,16 @@ EXPORT_SYMBOL(num_physpages);
EXPORT_SYMBOL(high_memory);
EXPORT_SYMBOL(vmalloc_earlyreserve);
+int randomize_va_space __read_mostly = 1;
+
+static int __init disable_randmaps(char *s)
+{
+ randomize_va_space = 0;
+ return 0;
+}
+__setup("norandmaps", disable_randmaps);
+
+
/*
* If a p?d_bad entry is found while walking page tables, report
* the error, before resetting entry to p?d_none. Usually (but
OpenPOWER on IntegriCloud