lkml.org 
[lkml]   [2020]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.9 261/271] Documentation: Document arm64 kpti control
Date
From: Jeremy Linton <jeremy.linton@arm.com>

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>
[florian: patch the correct file]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
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.


\
 
 \ /
  Last update: 2020-01-28 15:33    [W:0.685 / U:0.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site