tree dbc21a6b8a94eaa26fdc73b4440affa5ad082e4c
parent 1d4238c56f9816ce0f9c8dbe42d7f2ad81cb6613
author Russell King <rmk+kernel@armlinux.org.uk> 1526033782 +0100
committer Russell King <rmk+kernel@armlinux.org.uk> 1527805646 +0100

ARM: spectre-v1: fix syscall entry

Prevent speculation at the syscall table decoding by clamping the index
used to zero on invalid system call numbers, and using the csdb
speculative barrier.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Boot-tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>