linux-kernel - Re: [PATCH] sparse doesn't support indirect

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Message-ID: <20180227223611.vglxasfco524cdy7@ltop.local>
Date:   Tue, 27 Feb 2018 23:36:13 +0100
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Matthew Wilcox <willy@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Subject: Re: [PATCH] sparse doesn't support indirect_branch attribute

On Tue, Feb 27, 2018 at 02:12:28PM -0800, Linus Torvalds wrote:
> On Tue, Feb 27, 2018 at 12:18 PM, Randy Dunlap <rdunlap@...radead.org> wrote:
> >
> > I don't mind the patch, but I did send a patch for this attribute on Feb. 13, 2018,
> > to the sparse mailing list.
> 
> I think the sparse plan is to just stop warning about unknown
> attributes, because it doesn't really help users (at most it's a note
> to a sparse developer).
> 
> But sparse doesn't have the same regular releases the kernel has. Oh well.

To compensate this, I sent a patch  to use '-Wno-unknown-attribute' for kernel
builds. Masahiro Yamada has already taken it to the linux-kbuild tree.
I'm not sure if it's planned for the next -rc or for 4.17, though.

-- Luc Van Oostenryck