linux-kernel - Re: [PATCH] arm64: ptrace: Use ARM64_SME to guard the SME register enumerations

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Message-ID: <Y5nj4WmHNUCSaDMZ@sirena.org.uk>
Date:   Wed, 14 Dec 2022 14:55:29 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Zenghui Yu <yuzenghui@...wei.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        oleg@...hat.com, catalin.marinas@....com, will@...nel.org,
        wanghaibin.wang@...wei.com, zhouquan65@...wei.com,
        sundongxu3@...wei.com
Subject: Re: [PATCH] arm64: ptrace: Use ARM64_SME to guard the SME register
 enumerations

On Wed, Dec 14, 2022 at 09:59:43PM +0800, Zenghui Yu wrote:
> We currently guard REGSET_{SSVE, ZA} using ARM64_SVE for no good reason.
> Both enumerations would be pointless without ARM64_SME and create two empty
> entries in aarch64_regsets[] which would then become part of a process's
> native regset view (they should be ignored though).
> 
> Switch to use ARM64_SME instead.

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

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