linux-kernel - Re: [PATCH v3 3/6] x86/microcode: Display revisions only when update is successful

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Date:   Fri, 6 Jan 2023 22:52:45 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Luck, Tony" <tony.luck@...el.com>
Cc:     "Raj, Ashok" <ashok.raj@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        X86-kernel <x86@...nel.org>,
        LKML Mailing List <linux-kernel@...r.kernel.org>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        "Schofield, Alison" <alison.schofield@...el.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>
Subject: Re: [PATCH v3 3/6] x86/microcode: Display revisions only when update
 is successful

On Fri, Jan 06, 2023 at 09:35:41PM +0000, Luck, Tony wrote:
> # dmesg | tail -1
> microcode revision: 0x40001a -> 0x4001a
> 
> User doesn't notice that the version didn't change and thinks
> that all is well.

The version did change. One '0' less.

Users don't read even if you put in there:

	"Corrected error, no action required."

User still complains about maybe her hardware going bad and "should I replace my
CPU" yadda yadda...

But whatever, since both of you think this is sooo important, then pls do this:

Success: "Reload completed, microcode revision: 0x%x -> 0x%x\n"

Failure: "Reload failed, current microcode revision: 0x%x\n"

Or something along those lines.

-- 
Regards/Gruss,
    Boris.

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