ARM: spectre-v1: add speculation barrier (csdb) macros
authorRussell King <rmk+kernel@armlinux.org.uk>
Mon, 15 Oct 2018 15:32:10 +0000 (11:32 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 18 Oct 2018 07:16:27 +0000 (09:16 +0200)
commitf6909113ad1ff2a168643e7fee3136b8adbb4aa9
treeb6fc5c2db10779c9095fbacea6271c7a3f19b808
parente7fc401a8800b9d657e2d1ba7188592b449c9c84
ARM: spectre-v1: add speculation barrier (csdb) macros

Commit a78d156587931a2c3b354534aa772febf6c9e855 upstream.

Add assembly and C macros for the new CSDB instruction.

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>
Signed-off-by: David A. Long <dave.long@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm/include/asm/assembler.h
arch/arm/include/asm/barrier.h