linux-kernel - Re: [PATCH] Compiler Attributes: move kernel-only attributes into __KERNEL_

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Date:   Mon, 21 Jan 2019 11:43:41 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Xiaozhou Liu <lxz1983@...il.com>,
        Network Development <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Compiler Attributes: move kernel-only attributes into
 __KERNEL__

On Sat, Jan 19, 2019 at 07:22:50PM +0100, Miguel Ojeda wrote:
> Hi Greg, Nick, Xiaozhou,
> 
> On Thu, Dec 6, 2018 at 1:50 PM Greg KH <gregkh@...uxfoundation.org> wrote:
> >
> > If something is fixed in Linus's tree for this, I want to take it into
> > the 4.19-stable tree as well.
> 
> This ended up in Linus' tree before the holidays, i.e. 4.20 has it,
> see commit 71391bdd2e9a ("include/linux/compiler_types.h: don't
> pollute userspace with macro definitions").
> 
> In case you want to still backport this to 4.19: you can't cherry-pick
> it without conflicts because some stuff was moved around due to the
> Compiler Attributes patch series (which also went in with 4.20 too),
> but you can move the macros like this commit does. There are 2
> conflicts:
> 
>   * The big block of macros for attributes:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/linux/compiler_types.h?h=v4.19.16#n189
>   * The __always_inline macro:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/linux/compiler_types.h?h=v4.19.16#n275
> 
> All those are nowadays inside __KERNEL__ && !__ASSEMBLY__, so it
> should be fine to move those too along the rest that this patch moves.

I have no idea why I would want to backport this, sorry :(

If this resolves a problem, great, but someone has to do the backport
for me to be able to take it.

thanks,

greg k-h

> 
> Cheers,
> Miguel