linux-kernel - Re: [PATCH 2/2] x86/microcode: Fix CPU synchronization routine

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Date:   Thu, 15 Mar 2018 02:01:52 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:     X86 ML <x86@...nel.org>, Emanuel Czirai <xftroxgpx@...tonmail.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] x86/microcode: Fix CPU synchronization routine

On Wed, Mar 14, 2018 at 10:00:14PM -0300, Henrique de Moraes Holschuh wrote:
> Intel takes anything from twenty thousand cycles to several *million*
> cycles per core, proportional to microcode update size.

Got any hard data to back that claim up?

-- 
Regards/Gruss,
    Boris.

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