From:   Oleksandr Natalenko <oleksandr@natalenko.name>
To:     David Woodhouse <dwmw2@infradead.org>,
        Usama Arif <usama.arif@bytedance.com>
Cc:     tglx@linutronix.de, kim.phillips@amd.com, arjan@linux.intel.com,
        mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
        hpa@zytor.com, x86@kernel.org, pbonzini@redhat.com,
        paulmck@kernel.org, linux-kernel@vger.kernel.org,
        kvm@vger.kernel.org, rcu@vger.kernel.org, mimoja@mimoja.de,
        hewenliang4@huawei.com, thomas.lendacky@amd.com, seanjc@google.com,
        pmenzel@molgen.mpg.de, fam.zheng@bytedance.com,
        punit.agrawal@bytedance.com, simon.evans@bytedance.com,
        liangma@liangbit.com, Piotr Gorski <piotrgorski@cachyos.org>
Subject: Re: [External] Re: [PATCH v9 0/8] Parallel CPU bringup for x86_64
Date:   Mon, 20 Feb 2023 23:41:21 +0100
Message-ID: <2668982.mvXUDI8C0e@natalenko.name>
In-Reply-To: <4a7b863c-469d-ea61-fc49-7aa8c819bb73@bytedance.com>
References: <20230215145425.420125-1-usama.arif@bytedance.com>
 <982e1d6140705414e8fd60b990bd259a@natalenko.name>
 <4a7b863c-469d-ea61-fc49-7aa8c819bb73@bytedance.com>
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Hello.

On pond=C4=9Bl=C3=AD 20. =C3=BAnora 2023 23:23:43 CET Usama Arif wrote:
> So for initial boot, do all CPUs comes up for you when parallel smp boot=
=20
> is enabled or only 1?

All the CPUs come up during the initial boot.

> I don't have access to Ryzen hardware so can only say from code, but it=20
> would be weird if initial boot is fine but resume is broken if the same=20
> code path is being taken.

=2D-=20
Oleksandr Natalenko (post-factum)