linux-kernel - Re: [tip: ras/core] x86/mce: Add a struct mce.kflags field

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Message-ID: <20200420084242.GA20918@zn.tnic>
Date:   Mon, 20 Apr 2020 10:42:42 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-tip-commits@...r.kernel.org,
        Tony Luck <tony.luck@...el.com>, x86 <x86@...nel.org>
Subject: Re: [tip: ras/core] x86/mce: Add a struct mce.kflags field

On Mon, Apr 20, 2020 at 01:06:40AM -0700, Christoph Hellwig wrote:
> Err, how can you add a new field to an uapi structure and not break
> things?

By adding it to the end of the structure. The mcelog tool gets the
record length first, before doing anything with the records.

-- 
Regards/Gruss,
    Boris.

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