linux-kernel - Re: [PATCH v8 0/9] Parallel CPU bringup for x86

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Date:   Fri, 10 Feb 2023 09:02:06 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     paulmck@...nel.org, Usama Arif <usama.arif@...edance.com>
Cc:     tglx@...utronix.de, kim.phillips@....com, arjan@...ux.intel.com,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        hpa@...or.com, x86@...nel.org, pbonzini@...hat.com,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        rcu@...r.kernel.org, mimoja@...oja.de, hewenliang4@...wei.com,
        thomas.lendacky@....com, seanjc@...gle.com, pmenzel@...gen.mpg.de,
        fam.zheng@...edance.com, punit.agrawal@...edance.com,
        simon.evans@...edance.com, liangma@...ngbit.com
Subject: Re: [PATCH v8 0/9] Parallel CPU bringup for x86_64

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 the
> > initial_gs, initial_stack and early_gdt_descr properly for this case.
> > 
> > The improvement in boot time is the same as v7.
> 
> This one passes moderate rcutorture testing.

Thanks, Paul!

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