linux-kernel - Re: [PATCH V4] x86: call smp vmxoff in smp stop

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Message-ID: <20170419095002.n2m6hsehfy2hzscn@gmail.com>
Date:   Wed, 19 Apr 2017 11:50:02 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Xishi Qiu <qiuxishi@...wei.com>, Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        the arch/x86 maintainers <x86@...nel.org>,
        wanpeng li <wanpeng.li@...mail.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        hidehiro kawai ez <hidehiro.kawai.ez@...achi.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Fengtiantian <fengtiantian@...wei.com>,
        Xiexiuqi <xiexiuqi@...wei.com>
Subject: Re: [PATCH V4] x86: call smp vmxoff in smp stop


* Paolo Bonzini <pbonzini@...hat.com> wrote:

> 
> > > On 18/01/2017 12:32, Xishi Qiu wrote:
> > > > From: Tiantian Feng <fengtiantian@...wei.com>
> > > > 
> > > > We need to disable VMX on all CPUs before stop cpu when OS panic,
> > > > otherwisewe risk hanging up the machine, because the CPU ignore INIT
> > > > signals when VMX is enabled. In kernel mainline this issue existence.
> > 
> > Yes, but the changelog is atrcious:
> > 
> >  - title should describe the purpose, not the implementation
> > 
> >  - CPU is spelled 'CPU' once, then 'cpu' _in the same sentence_!
> > 
> >  - typos
> > 
> >  - spelling
> > 
> >  - the last sentence doesn't even parse ...
> > 
> > Still it's already at V4 and comes with two signoffs and what amounts to a
> > maintainer Ack??
> 
> Well, the v2-v4 were really just about getting the signoffs right.  At some
> point you just get desensitized about the changelog. :(
> 
> I'll post v5 with a rewritten commit message.

Thanks!

	Ingo