linux-kernel - Re: [PATCH 2/2] arm64/mm: show TAINT_CPU_OUT_OF_SPEC warning if the cache size is over the spec.

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Message-ID: <20190611154105.GE10165@c02tf0j2hf1t.cambridge.arm.com>
Date:   Tue, 11 Jun 2019 16:41:06 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Masayoshi Mizuma <msys.mizuma@...il.com>
Cc:     Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org,
        Masayoshi Mizuma <m.mizuma@...fujitsu.com>,
        linux-kernel@...r.kernel.org,
        Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>,
        Zhang Lei <zhang.lei@...fujitsu.com>
Subject: Re: [PATCH 2/2] arm64/mm: show TAINT_CPU_OUT_OF_SPEC warning if the
 cache size is over the spec.

On Tue, Jun 11, 2019 at 11:17:31AM -0400, Masayoshi Mizuma wrote:
> From: Masayoshi Mizuma <m.mizuma@...fujitsu.com>
> 
> Show the warning and taints as TAINT_CPU_OUT_OF_SPEC if the cache line
> size is greater than the maximum.

In general the "out of spec" part is a misnomer, we tend to apply it to
CPU features that are not supported by the kernel rather than some CPU
feature not compliant with the architecture (we call the latter errata).

I suggest you drop this patch.

-- 
Catalin