git.stricted.de - GitHub/LineageOS/G12/android_kernel_amlogic

author	Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
	Mon, 7 Mar 2022 19:28:32 +0000 (19:28 +0000)
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	Fri, 11 Mar 2022 09:03:32 +0000 (10:03 +0100)
commit	48b1aa98e19d189703d518166ddb2520164b3164
tree	32190ccc63e6da6353ad8060104f74c33e2e3fbc	tree \| snapshot (tar.gz zip)
parent	da3dfb69bbc3fdfeb3e5930fe28bcd689751a594	commit \| diff

ARM: include unprivileged BPF status in Spectre V2 reporting

commit 25875aa71dfefd1959f07e626c4d285b88b27ac2 upstream.

The mitigations for Spectre-BHB are only applied when an exception
is taken, but when unprivileged BPF is enabled, userspace can
load BPF programs that can be used to exploit the problem.

When unprivileged BPF is enabled, report the vulnerable status via
the spectre_v2 sysfs file.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>