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| author | Andi Kleen <ak@suse.de> | 2006-02-16 23:41:58 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-17 08:00:40 -0800 |
| commit | a62eaf151d9cb478d127cfbc2e93c498869785b0 (patch) | |
| tree | b13d62257ada7e0a9d37fdc9a69a7afa6f028b30 /mm/memory.c | |
| parent | 99019e919969be88e7e4042f3afa296bd55ad9ec (diff) | |
| download | lwn-a62eaf151d9cb478d127cfbc2e93c498869785b0.tar.gz lwn-a62eaf151d9cb478d127cfbc2e93c498869785b0.zip | |
[PATCH] x86_64: Add boot option to disable randomized mappings and cleanup
AMD SimNow!'s JIT doesn't like them at all in the guest. For distribution
installation it's easiest if it's a boot time option.
Also I moved the variable to a more appropiate place and make
it independent from sysctl
And marked __read_mostly which it is.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c index 2bee1f21aa8a..9abc6008544b 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 |