[PATCH v4 5/5] arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
James Morse
james.morse at arm.com
Wed Jan 29 08:43:34 PST 2025
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 at vger.kernel.org
Reviewed-by: James Morse <james.morse at arm.com>
Thanks!
James
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