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From:   Emil Renner Berthing <emil.renner.berthing@gmail.com>
Date:   Sun, 22 Mar 2020 18:49:21 +0100
Message-ID: <CANBLGcxB7Tf7wmkDnjsiEpmo6djwzN2DEjGqPfCt4LG6wcjLbQ@mail.gmail.com>
Subject: Re: [PATCH v11 00/11] Add support for SBI v0.2 and CPU hotplug
To:     Atish Patra <atish.patra@wdc.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Zong Li <zong.li@sifive.com>, Nick Hu <nickhu@andestech.com>,
        Vincent Chen <vincent.chen@sifive.com>,
        Anup Patel <anup@brainfault.org>,
        Mike Rapoport <rppt@linux.ibm.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Gary Guo <gary@garyguo.net>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Greentime Hu <greentime.hu@sifive.com>,
        linux-riscv@lists.infradead.org, Bin Meng <bmeng.cn@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Mao Han <han_mao@c-sky.com>
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Hi Atish,

On Wed, 18 Mar 2020 at 02:12, Atish Patra <atish.patra@wdc.com> wrote:
>
> The Supervisor Binary Interface(SBI) specification[1] now defines a
> base extension that provides extendability to add future extensions
> while maintaining backward compatibility with previous versions.
> The new version is defined as 0.2 and older version is marked as 0.1.
>
> This series adds following features to RISC-V Linux.
> 1. Adds support for SBI v0.2
> 2. A Unified calling convention implementation between 0.1 and 0.2.
> 3. SBI Hart state management extension (HSM)
> 4. Ordered booting of harts
> 4. CPU hotplug

If it's any help I tried this series with both OpenSBI v0.6 and master
(9a74a64ae08),
and in both cases Linux found all four cpus. I can test the hotplug
stuff too if you send
me instructions. In any case you can add my

Tested-by: Emil Renner Berthing <kernel@esmil.dk>

/Emil