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authorH. Peter Anvin <hpa@linux.intel.com>2012-09-21 12:43:13 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2012-09-21 12:45:27 -0700
commit52b6179ac87d33c2eeaff5292786a10fe98cff64 (patch)
tree6ec59d41c4840844031c5030c6fbbd4cdd40819d /Documentation/kernel-parameters.txt
parent63bcff2a307b9bcc712a8251eb27df8b2e117967 (diff)
x86, smap: Turn on Supervisor Mode Access Prevention
If Supervisor Mode Access Prevention is available and not disabled by the user, turn it on. Also fix the expansion of SMEP (Supervisor Mode Execution Prevention.) Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1348256595-29119-10-git-send-email-hpa@linux.intel.com
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ad7e2e5088c1..49c5c41b07e1 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1812,8 +1812,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
noexec=on: enable non-executable mappings (default)
noexec=off: disable non-executable mappings
+ nosmap [X86]
+ Disable SMAP (Supervisor Mode Access Prevention)
+ even if it is supported by processor.
+
nosmep [X86]
- Disable SMEP (Supervisor Mode Execution Protection)
+ Disable SMEP (Supervisor Mode Execution Prevention)
even if it is supported by processor.
noexec32 [X86-64]