Message-ID: <316d19f15ad98459df920e3bb2657f183c88d647.camel@infradead.org>
Subject: Re: [PATCH v8 0/9] Parallel CPU bringup for x86_64
From:   David Woodhouse <dwmw2@infradead.org>
To:     paulmck@kernel.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,
        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
Date:   Fri, 10 Feb 2023 09:02:06 +0000
In-Reply-To: <20230210041103.GO2948950@paulmck-ThinkPad-P17-Gen-1>
References: <20230209154156.266385-1-usama.arif@bytedance.com>
         <20230210041103.GO2948950@paulmck-ThinkPad-P17-Gen-1>
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On Thu, 2023-02-09 at 20:11 -0800, Paul E. McKenney wrote:
> On Thu, Feb 09, 2023 at 03:41:47PM +0000, Usama Arif wrote:
> > The major change over v7 is fixing CPU0 hotplug not working as reported=
 by
> > Paul E. McKenney using rcu torture tests. This is fixed by setting up t=
he
> > initial_gs, initial_stack and early_gdt_descr properly for this case.
> >=20
> > The improvement in boot time is the same as v7.
>=20
> This one passes moderate rcutorture testing.

Thanks, Paul!

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