]> 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>
Sun, 20 Apr 2025 08:16:00 +0000 (10:16 +0200)
commit9ca4fe357464bbdad0db67985275f2694df8dab5
treee15d7c028add19ddb9a5324ecdb20305efd8f42e
parentd25a240c5a937f7a60a4a2f8e548e78a8de54ea0
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