Subject: Re: [PATCH V2 2/7] arm64: errata: Add detection for TRBE ignored system register writes

From: Catalin Marinas <[email-masked]>
Date: Fri, 7 Jan 2022 10:58:27 +0000

On Fri, Jan 07, 2022 at 06:40:03AM +0530, Anshuman Khandual wrote:
> TRBE implementations affected by Arm erratum #2064142 might fail to write
> into certain system registers after the TRBE has been disabled. Under some
> conditions after TRBE has been disabled, writes into certain TRBE registers
> TRBLIMITR_EL1, TRBPTR_EL1, TRBBASER_EL1, TRBSR_EL1 and TRBTRG_EL1 will be
> ignored and not be effected. This adds a new errata ARM64_ERRATUM_2064142
> in arm64 errata framework.
> 
> Cc: Catalin Marinas <[email-masked]>
> Cc: Will Deacon <[email-masked]>
> Cc: Mathieu Poirier <[email-masked]>
> Cc: Suzuki Poulose <[email-masked]>
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Signed-off-by: Anshuman Khandual <[email-masked]>

Acked-by: Catalin Marinas <[email-masked]>

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