linux-kernel - Re: [PATCH] arm64: Make L1_CACHE

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Message-ID: <ffc090d5-62c9-e608-32e2-8d13d01234e6@gmail.com>
Date:   Mon, 12 Feb 2018 15:57:29 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Timur Tabi <timur@...eaurora.org>,
        linux-arm-kernel@...ts.infradead.org
Cc:     tchalamarla@...ium.com, rrichter@...ium.com, opendmb@...il.com,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: Make L1_CACHE_SHIFT configurable

On 02/12/2018 03:52 PM, Timur Tabi wrote:
> On 02/12/2018 05:45 PM, Florian Fainelli wrote:
>> +config ARM64_L1_CACHE_SHIFT
>> +    int
>> +    default 7 if ARM64_L1_CACHE_SHIFT_7
>> +    default 6
> 
> Shouldn't this be the other way around?  Everyone is used to 7 now, so
> you're changing the default back to 6.  I would think that it should be
> 7 by default, and platforms like Brahma-B53 should force it to 6.

That is debatable, is there a good publicly available table of what the
typical L1 cache line size is on ARMv8 platforms?
-- 
Florian