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authorChuck Ebbert <76306.1226@compuserve.com>2006-03-23 05:59:34 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-23 10:38:04 -0500
commit4f88651125e2ca8b106b6f65b65ea45776517bf3 (patch)
treea9865c268c57bd1752a66899615d8694d5ddaea8 /Documentation
parent3bc9b76bede9b3c72088258c7e72eb823f3351d4 (diff)
[PATCH] i386: allow disabling X86_FEATURE_SEP at boot
Allow the x86 "sep" feature to be disabled at bootup. This forces use of the int80 vsyscall. Mainly for testing or benchmarking the int80 vsyscall code. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation')
-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 fc99075e0af4..880be3a30d8d 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1008,7 +1008,9 @@ running once the system is up.
1008 noexec=on: enable non-executable mappings (default) 1008 noexec=on: enable non-executable mappings (default)
1009 noexec=off: disable nn-executable mappings 1009 noexec=off: disable nn-executable mappings
1010 1010
1011 nofxsr [BUGS=IA-32] 1011 nofxsr [BUGS=IA-32] Disables x86 floating point extended
1012 register save and restore. The kernel will only save
1013 legacy floating-point registers on task switch.
1012 1014
1013 nohlt [BUGS=ARM] 1015 nohlt [BUGS=ARM]
1014 1016
@@ -1053,6 +1055,8 @@ running once the system is up.
1053 1055
1054 nosbagart [IA-64] 1056 nosbagart [IA-64]
1055 1057
1058 nosep [BUGS=IA-32] Disables x86 SYSENTER/SYSEXIT support.
1059
1056 nosmp [SMP] Tells an SMP kernel to act as a UP kernel. 1060 nosmp [SMP] Tells an SMP kernel to act as a UP kernel.
1057 1061
1058 nosync [HW,M68K] Disables sync negotiation for all devices. 1062 nosync [HW,M68K] Disables sync negotiation for all devices.