summaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorJeremy Linton <jeremy.linton@arm.com>2019-01-25 12:07:00 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-01-29 15:02:37 +0100
commitc57b0f88fce8b4f697f323cfb3b7acc195b7560f (patch)
tree95bdef51e2383b3b7bc54b994b4d4cc61b7b843a /Documentation
parentda6b467e112957eea049c400eff84e3cfb89008d (diff)
downloadlinux-stable-c57b0f88fce8b4f697f323cfb3b7acc195b7560f.tar.gz
linux-stable-c57b0f88fce8b4f697f323cfb3b7acc195b7560f.tar.bz2
linux-stable-c57b0f88fce8b4f697f323cfb3b7acc195b7560f.zip
Documentation: Document arm64 kpti control
commit de19055564c8f8f9d366f8db3395836da0b2176c upstream. For a while Arm64 has been capable of force enabling or disabling the kpti mitigations. Lets make sure the documentation reflects that. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 933465eff40e..7e0a4be3503d 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1845,6 +1845,12 @@
Built with CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y,
the default is off.
+ kpti= [ARM64] Control page table isolation of user
+ and kernel address spaces.
+ Default: enabled on cores which need mitigation.
+ 0: force disabled
+ 1: force enabled
+
kvm.ignore_msrs=[KVM] Ignore guest accesses to unhandled MSRs.
Default is 0 (don't ignore, but inject #GP)