linux-kernel - Re: [PATCH] x86/smpboot: Check for cpu

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Message-ID: <20150720151000.GB12256@nazgul.tnic>
Date:	Mon, 20 Jul 2015 17:10:00 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Joerg Roedel <jroedel@...e.de>
Cc:	Joerg Roedel <joro@...tes.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/smpboot: Check for cpu_active on cpu initialization

On Mon, Jul 20, 2015 at 05:02:40PM +0200, Joerg Roedel wrote:
> I have seen a report where this happens on bare metal, when the change
> to the cpu_active bit becomes visible on the other CPU significantly
> later than the the cpu_online bit. This happened on a pretty big machine
> with 88 cores.

So how about what I proposed at the end of my previous mail?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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