linux-kernel - Re: [PATCH v2 1/1] arm: topology: parse the topology from the dt

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Message-ID: <871rbbmnbu.mognet@arm.com>
Date:   Thu, 15 Apr 2021 19:09:41 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Ruifeng Zhang <ruifeng.zhang0110@...il.com>, linux@...linux.org.uk,
        sudeep.holla@....com, gregkh@...uxfoundation.org,
        rafael@...nel.org, a.p.zijlstra@...llo.nl,
        dietmar.eggemann@....com, mingo@...nel.org,
        ruifeng.zhang1@...soc.com, nianfu.bai@...soc.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] arm: topology: parse the topology from the dt

On 14/04/21 20:23, Ruifeng Zhang wrote:
> From: Ruifeng Zhang <ruifeng.zhang1@...soc.com>
>
> The arm topology still parse from the MPIDR, but it is incomplete.  When
> the armv8.2 or above cpu runs kernel in EL1 with aarch32 mode, it will
> parse out the wrong topology.
>

Per my other email, isn't the problem that MPIDR can't be trusted to
properly represent the topology, and thus a new method of describing the
topology (cpu-map) has to be used?