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Date:   Tue, 21 Aug 2018 00:48:26 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Anup Patel <anup@brainfault.org>
Cc:     Atish Patra <atish.patra@wdc.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Damien Le Moal <Damien.LeMoal@wdc.com>,
        "palmer@sifive.com" <palmer@sifive.com>,
        "linux-kernel@vger.kernel.org List" <linux-kernel@vger.kernel.org>,
        Christoph Hellwig <hch@infradead.org>,
        "linux-riscv@lists.infradead.org" <linux-riscv@lists.infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC PATCH 3/5] RISC-V: Add cpu_operatios structure
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On Thu, Aug 16, 2018 at 11:51:03AM +0530, Anup Patel wrote:
> Having thought about this more, I think cpu_ops should be an pointer array
> of NR_CPUS size. This means its not necessary to have have same ops for
> all CPUs. The ARM64 implementation of CPU operations also allows separate
> CPU operations for each CPU.
> 
> For example, let's us assume that we have an SOC where we 2 cores
> per-cluster and N clusters. All CPUs of cluster0 comes up at the same time
> whereas cluster1 onwards we have to bring-up CPUs using special HW
> mechanism.

All this (including the patch itself) seems a little hypothetical.
I'd rather only add all this infrastructure once it actually is needed.