linux-kernel - Re: [PATCH 2/4] RISC-V: Implement nosmp commandline option.

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Date:   Thu, 25 Apr 2019 10:41:47 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Atish Patra <atish.patra@....com>
Cc:     linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Albert Ou <aou@...s.berkeley.edu>,
        Andreas Schwab <schwab@...e.de>,
        Anup Patel <anup@...infault.org>,
        Johan Hovold <johan@...nel.org>,
        linux-riscv@...ts.infradead.org,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Damien Le Moal <Damien.LeMoal@....com>
Subject: Re: [PATCH 2/4] RISC-V: Implement nosmp commandline option.

On Wed, Apr 24, 2019 at 02:47:59PM -0700, Atish Patra wrote:
> nosmp command line option sets max_cpus to zero. No secondary harts
> will boot if this is enabled. But present cpu mask will still point to
> all possible masks.
>
> Fix present cpu mask for nosmp usecase.
>
> Signed-off-by: Atish Patra <atish.patra@....com>
> Reviewed-by: Christoph Hellwig <hch@....de>

I just noticed RISC-V has CONFIG_SMP option configurable. ARM64 has
it always on and no option to disable :)

Anyways, this looks good.

Reviewed-by: Sudeep Holla <sudeep.holla@....com>

--
Regards,
Sudeep