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Date:   Fri, 6 Sep 2019 09:46:55 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     "Raj, Ashok" <ashok.raj@intel.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Mihai Carabas <mihai.carabas@oracle.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        Jon Grimm <Jon.Grimm@amd.com>, kanth.ghatraju@oracle.com,
        konrad.wilk@oracle.com, patrick.colp@oracle.com,
        Tom Lendacky <thomas.lendacky@amd.com>,
        x86-ml <x86@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/microcode: Add an option to reload microcode even if
 revision is unchanged
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On Thu, Sep 05, 2019 at 03:27:06PM -0700, Raj, Ashok wrote:
> Several customers have asked this to check the safety of late loads.
> They want to validate in production setup prior to rolling late-load
> to all production systems.

First of all, they should use *early* loading. I don't know how many
times I need to say that, maybe I should print it on T-shirts.

And then they can reboot. If you're thinking of the
"we-can't-reboot-because-we're-cloud" argument don't even bother to
bring it - I've had it more than enough and no, just because cloud
people don't want to reboot, it doesn't mean we will support some insane
use case.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette