linux-kernel - Re: [PATCH v2 5/9] arm64/cpufeature: Use alternatives to check enabled ARM64_HAS

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Message-ID: <Zhx/Ltwvue04nW7g@finisterre.sirena.org.uk>
Date: Mon, 15 Apr 2024 10:13:18 +0900
From: Mark Brown <broonie@...nel.org>
To: Liao Chang <liaochang1@...wei.com>
Cc: catalin.marinas@....com, will@...nel.org, maz@...nel.org,
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Subject: Re: [PATCH v2 5/9] arm64/cpufeature: Use alternatives to check
 enabled ARM64_HAS_NMI feature

On Thu, Apr 11, 2024 at 06:48:54AM +0000, Liao Chang wrote:
> Due to the historical reasons, cpus_have_const_cap() is more complicated
> than it needs to be. When CONFIG_ARM64_NMI=y the ARM64_HAS_NMI cpucap is
> a strict boot cpu feature which is detected and patched early on the
> boot cpu, which means no code depends on ARM64_HAS_NMI cpucap run in the
> window between the ARM64_HAS_NMI cpucap is detected and alternative is
> patched. So it would be nice to migrate caller over to
> alternative_has_cap_likey().

Just squash this one in as well.

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