linux-kernel - Re: [PATCH 04/47] arm64/sysreg: Add register fields for ID_AA64DFR2

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Message-ID: <fe8a2d61-4aeb-4f56-b0d0-90bbfe512c74@sirena.org.uk>
Date: Wed, 2 Oct 2024 16:48:07 +0100
From: Mark Brown <broonie@...nel.org>
To: Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-kernel@...r.kernel.org, kvmarm@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, maz@...nel.org,
	Oliver Upton <oliver.upton@...ux.dev>,
	James Morse <james.morse@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>
Subject: Re: [PATCH 04/47] arm64/sysreg: Add register fields for
 ID_AA64DFR2_EL1

On Tue, Oct 01, 2024 at 08:13:13AM +0530, Anshuman Khandual wrote:

> This adds register fields for ID_AA64DFR2_EL1 as per the definitions based
> on DDI0601 2024-06.

DDI0601 2024-09 has now been released...

> +Sysreg	ID_AA64DFR2_EL1	3	0	0	5	2
> +Res0	63:8
> +UnsignedEnum	7:4	BWE
> +	0b0000	NI
> +	0b0001	IMP
> +	0b0010	IMP_WPT

Could equally name that BWE2 since this is for FEAT_BWE2.  I'm OK either
way I think, with a slight preference for BWE2 I think.  Either way:

Reviewed-by: Mark Brown <broonie@...nel.org>

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