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authorIngo Molnar <mingo@elte.hu>2009-09-02 02:17:56 -0400
committerIngo Molnar <mingo@elte.hu>2009-09-02 02:17:56 -0400
commit936e894a976dd3b0f07f1f6f43c17b77b7e6146d (patch)
tree5ed5c1f6735dcd26550594df23c8f7fe2aa21a15 /security/Kconfig
parent69575d388603365f2afbf4166df93152df59b165 (diff)
parent326ba5010a5429a5a528b268b36a5900d4ab0eba (diff)
Merge commit 'v2.6.31-rc8' into x86/txt
Conflicts: arch/x86/kernel/reboot.c security/Kconfig Merge reason: resolve the conflicts, bump up from rc3 to rc8. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'security/Kconfig')
-rw-r--r--security/Kconfig16
1 files changed, 16 insertions, 0 deletions
diff --git a/security/Kconfig b/security/Kconfig
index 5721847a7a62..fb363cd81cf6 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -143,6 +143,22 @@ config INTEL_TXT
143 143
144 If you are unsure as to whether this is required, answer N. 144 If you are unsure as to whether this is required, answer N.
145 145
146config LSM_MMAP_MIN_ADDR
147 int "Low address space for LSM to protect from user allocation"
148 depends on SECURITY && SECURITY_SELINUX
149 default 65536
150 help
151 This is the portion of low virtual memory which should be protected
152 from userspace allocation. Keeping a user from writing to low pages
153 can help reduce the impact of kernel NULL pointer bugs.
154
155 For most ia64, ppc64 and x86 users with lots of address space
156 a value of 65536 is reasonable and should cause no problems.
157 On arm and other archs it should not be higher than 32768.
158 Programs which use vm86 functionality or have some need to map
159 this low address space will need the permission specific to the
160 systems running LSM.
161
146source security/selinux/Kconfig 162source security/selinux/Kconfig
147source security/smack/Kconfig 163source security/smack/Kconfig
148source security/tomoyo/Kconfig 164source security/tomoyo/Kconfig