linux-kernel - Re: [PATCH] openrisc: Add support for more module relocations

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Date: Thu, 11 Apr 2024 16:51:01 +0100
From: Stafford Horne <shorne@...il.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Jonas Bonn <jonas@...thpole.se>,
	Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
	Eric Biederman <ebiederm@...ssion.com>,
	Kees Cook <keescook@...omium.org>, linux-openrisc@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH] openrisc: Add support for more module relocations

On Thu, Apr 11, 2024 at 02:12:59PM +0200, Geert Uytterhoeven wrote:
> Hi Stafford,
> 
> On Wed, Apr 10, 2024 at 10:52 PM Stafford Horne <shorne@...il.com> wrote:
> > This patch adds the relocations. Note, we use the old naming R_OR32_*
> > instead or the new naming R_OR1K_* to avoid change as this header is
> > exported as a user api.
> 
> > --- a/arch/openrisc/include/uapi/asm/elf.h
> > +++ b/arch/openrisc/include/uapi/asm/elf.h
> > @@ -43,6 +43,8 @@
> >  #define R_OR32_JUMPTARG        6
> >  #define R_OR32_VTINHERIT 7
> >  #define R_OR32_VTENTRY 8
> > +#define R_OR32_AHI16   35
> > +#define R_OR32_SLO16   39
> 
> Would it make sense to switch to the new names, e.g.
> 
>   #define R_OR1K_NONE        0
> 
> and add definitions for backwards compatibility?
> 
>     #define R_OR32_NONE        R_OR1K_NONE
> 

Hi Geert,

Actually I had a patch doing this and added all 38 or so relocation definitions.
But I dropped it at the last moment in favor of simplicity.

Let me rework it and add it back.

-Stafford