This is a note to let you know that I've just added the patch titled
Documentation: Document arm64 kpti control
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
documentation-document-arm64-kpti-control.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From de19055564c8f8f9d366f8db3395836da0b2176c Mon Sep 17 00:00:00 2001
From: Jeremy Linton <jeremy.linton@xxxxxxx>
Date: Fri, 25 Jan 2019 12:07:00 -0600
Subject: Documentation: Document arm64 kpti control
From: Jeremy Linton <jeremy.linton@xxxxxxx>
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@xxxxxxx>
Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
Signed-off-by: Jonathan Corbet <corbet@xxxxxxx>
[florian: patch the correct file]
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/kernel-parameters.txt | 6 ++++++
1 file changed, 6 insertions(+)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1965,6 +1965,12 @@ bytes respectively. Such letter suffixes
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
+
kstack=N [X86] Print N words from the kernel stack
in oops dumps.
Patches currently in stable-queue which might be from jeremy.linton@xxxxxxx are
queue-4.9/documentation-document-arm64-kpti-control.patch
