linux-kernel - Re: [PATCH 2/4] x86/mce: Get rid of machine_check

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Message-ID: <YUi3tdWXfo8VeMs/@zn.tnic>
Date:   Mon, 20 Sep 2021 18:32:53 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Luck, Tony" <tony.luck@...el.com>
Cc:     Yazen Ghannam <Yazen.Ghannam@....com>, X86 ML <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] x86/mce: Get rid of machine_check_vector

On Mon, Sep 20, 2021 at 04:04:35PM +0000, Luck, Tony wrote:
> You want to know how many bit are left for some reason? Is there some
> user API that will break if we overflow and start allocating bits from
> the next 64-bit word?

Well, I'd like for all of the bits to fit in a single u64, naturally.
"Spilling" into the next word is unnecessary, even though it doesn't
matter for solely kernel internal usage - just common sense.

> Or is this just the countdown for when you and I both have a nervous
> breakdown trying to keep track of that many different option paths
> through the machine check code :-)

Nah, this is the moment where I close the MCE tree and no more features
are allowed!

:-P

> Thanks for the tip about Ctrl-x to decrement a number in vim (Google
> tell me Ctrl-a increments). Learned something new today :-)

Yeah, vim is simply great. :-)

-- 
Regards/Gruss,
    Boris.

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