Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux...

[pandora-kernel.git] / security / Kconfig

diff --git a/security/Kconfig b/security/Kconfig
index 38411dd..cc5c70c 100644 (file)
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -92,6 +92,35 @@ config SECURITY_ROOTPLUG
 
          See <http://www.linuxjournal.com/article.php?sid=6279> for
          more information about this module.
+         
+         If you are unsure how to answer this question, answer N.
+
+config SECURITY_LOWMEM
+       tristate "Low memory watermark support"
+       depends on SECURITY
+       help
+         Implements low memory watermark support
+
+         If you are unsure how to answer this question, answer N.
+
+config SECURITY_DEFAULT_MMAP_MIN_ADDR
+        int "Low address space to protect from user allocation"
+        depends on SECURITY
+        default 0
+        help
+         This is the portion of low virtual memory which should be protected
+         from userspace allocation.  Keeping a user from writing to low pages
+         can help reduce the impact of kernel NULL pointer bugs.
+
+         For most ia64, ppc64 and x86 users with lots of address space
+         a value of 65536 is reasonable and should cause no problems.
+         On arm and other archs it should not be higher than 32768.
+         Programs which use vm86 functionality would either need additional
+         permissions from either the LSM or the capabilities module or have
+         this protection disabled.
+
+         This value can be changed after boot using the
+         /proc/sys/vm/mmap_min_addr tunable.
 
          If you are unsure how to answer this question, answer N.