linux-kernel - Re: [PATCH v1 05/10] asm-generic: Define 'funct_descr_t' to commonly describe function descriptors

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Date:   Wed, 13 Oct 2021 00:27:19 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Helge Deller <deller@....de>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-ia64@...r.kernel.org, linux-parisc@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v1 05/10] asm-generic: Define 'funct_descr_t' to commonly
 describe function descriptors

On Wed, Oct 13, 2021 at 09:23:56AM +0200, Christophe Leroy wrote:
> 
> 
> Le 13/10/2021 à 09:01, Kees Cook a écrit :
> > On Mon, Oct 11, 2021 at 05:25:32PM +0200, Christophe Leroy wrote:
> > > We have three architectures using function descriptors, each with its
> > > own name.
> > > 
> > > Add a common typedef that can be used in generic code.
> > > 
> > > Also add a stub typedef for architecture without function descriptors,
> > 
> > nit: funct_descr_t reads weird to me. why not func_desc_t ? Either way:
> 
> func_desc_t already exists in powerpc. I have a patch to remove it as it is
> redundant with struct ppc64_opd_entry, but I didnt' want to include it in
> this series.
> 
> But after all I can add it in this series, I'll add it in v2.

Ah-ha! That works for me. :) Thanks!

-Kees

-- 
Kees Cook