From: Jeremy Linton <jeremy.linton@arm.com>
Date: Fri, 25 Jan 2019 12:07:00 -0600
Subject: Documentation: Document arm64 kpti control
Git-commit: de19055564c8f8f9d366f8db3395836da0b2176c
Patch-mainline: v5.1-rc1
References: bsc#1162623
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>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
Documentation/admin-guide/kernel-parameters.txt | 6 ++++++
1 file changed, 6 insertions(+)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1832,6 +1832,12 @@
kmemcheck=2 (one-shot mode)
Default: 2 (one-shot mode)
+ 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)