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Date:   Wed, 16 Dec 2020 11:12:49 +0100
From:   Thomas Gleixner <>
To:     "shenkai \(D\)" <>,
        Andy Lutomirski <>
Cc:     LKML <>,
        Ingo Molnar <>, Borislav Petkov <>,
        X86 ML <>, "H. Peter Anvin" <>,,,,
Subject: Re: [PATCH] use x86 cpu park to speedup smp_init in kexec situation


On Wed, Dec 16 2020 at 16:45, shenkai wrote:
> 在 2020/12/16 5:20, Thomas Gleixner 写道:
> Thanks for your and Andy's precious comments. I would like to take a try on
> reconstructing this patch to make it more decent and generic.

>> It would be interesting to see the numbers just with play_dead() using
>> hlt() or mwait(eax=0, 0) for the kexec case and no other change at all.

Can you please as a first step look into this and check if the time



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