Commit 8973a61e authored Jan 25, 2019 by Jeremy Linton Committed by Greg Kroah-Hartman Jan 29, 2020

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

parent 51772996

Documentation/kernel-parameters.txt

+6 −0

Original line number	Diff line number	Diff line
		@@ -1965,6 +1965,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
		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.