linux-kernel - Re: [PATCH 14/19] csky: Misc headers

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Message-ID: <20180320132237.GA11611@guoren>
Date:   Tue, 20 Mar 2018 21:22:38 +0800
From:   Guo Ren <ren_guo@...ky.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Jason Cooper <jason@...edaemon.net>,
        c-sky_gcc_upstream@...ky.com, gnu-csky@...tor.com,
        thomas.petazzoni@...tlin.com, wbx@...ibc-ng.org
Subject: Re: [PATCH 14/19] csky: Misc headers

On Tue, Mar 20, 2018 at 03:54:53PM +0800, Arnd Bergmann wrote:
> We generally assume that any upstream kernel ABI cannot be changed, so this
> has to be changed before the code gets merged upstream.
> 
> You can obviously maintain the old and the new ABI in parallel for a while,
> until the libc supports the new ABI, but you can't do that in the patches
> you send for integration.
> 
> This is more important for the list of system calls, but when you change
> the ABI, it should be changed all at once.
Ok, follow the rules. I will modify uclibc-ng and glibc now.