]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
authorDouglas Anderson <dianders@chromium.org>
Tue, 7 Jan 2025 20:06:02 +0000 (12:06 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 25 Apr 2025 08:45:37 +0000 (10:45 +0200)
commit4117975672c4743cffaf32b6fd018cfacd1b420e
tree968766e01f7dd5e8b41f6d4f4491e0c415cc89ec
parentd784cb189035c67f9729b88defaa14f2e6def649
arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists

commit a5951389e58d2e816eed3dbec5877de9327fd881 upstream.

When comparing to the ARM list [1], it appears that several ARM cores
were missing from the lists in spectre_bhb_loop_affected(). Add them.

NOTE: for some of these cores it may not matter since other ways of
clearing the BHB may be used (like the CLRBHB instruction or ECBHB),
but it still seems good to have all the info from ARM's whitepaper
included.

[1] https://developer.arm.com/Arm%20Security%20Center/Spectre-BHB

Fixes: 558c303c9734 ("arm64: Mitigate spectre style branch history side channels")
Cc: stable@vger.kernel.org
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20250107120555.v4.5.I4a9a527e03f663040721c5401c41de587d015c82@changeid
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm64/kernel/proton-pack.c