Re: [PATCH v4 5/5] arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists

Hi Doug,

On 07/01/2025 20:06, Douglas Anderson wrote:

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.

It's a moving target!

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

Reviewed-by: James Morse james.morse@arm.com

Thanks!

James