linux-kernel - Re: [PATCH v2] next: openrisc: Fix build

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Date:	Fri, 26 Sep 2014 20:18:42 +0200
From:	Jonas Bonn <jonas@...thpole.se>
To:	Guenter Roeck <linux@...ck-us.net>, Eric Paris <eparis@...hat.com>
CC:	linux@...nrisc.net, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org, linux-next@...r.kernel.org,
	Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH v2] next: openrisc: Fix build


-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.

On September 26, 2014 8:08:13 PM CEST, Guenter Roeck <linux@...ck-us.net> wrote:
>On Fri, Sep 26, 2014 at 01:53:01PM -0400, Eric Paris wrote:
>> Would you like me to carry this in the audit tree, since I'm the one
>who
>> broke it?
>> 
>Hi Eric,
>
>guess you are asking Jonas, but it would make sense to me.

Hi Eric,
Yes, please take this via the audit tree.
/Jonas

>
>Guenter
>
>> -Eric
>> 
>> On Fri, 2014-09-26 at 09:05 -0700, Guenter Roeck wrote:
>> > openrisc:defconfig fails to build in next-20140926 with the
>following error.
>> > 
>> > In file included from arch/openrisc/kernel/signal.c:31:0:
>> > ./arch/openrisc/include/asm/syscall.h: In function
>'syscall_get_arch':
>> > ./arch/openrisc/include/asm/syscall.h:77:9: error: 'EM_OPENRISC'
>undeclared
>> > 
>> > Fix by moving EM_OPENRISC to include/uapi/linux/elf-em.h.
>> > 
>> > Fixes: ce5d112827e5 ("ARCH: AUDIT: implement syscall_get_arch for
>all arches")
>> > Cc: Eric Paris <eparis@...hat.com>
>> > Cc: Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>
>> > Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
>> > Cc: Stephen Rothwell <sfr@...b.auug.org.au>
>> > Signed-off-by: Guenter Roeck <linux@...ck-us.net>
>> > ---
>> > v2: Only move EM_OPENRISC.
>> > 
>> > Another possible solution for the problem would be to include
>asm/elf.h
>> > in arch/openrisc/kernel/signal.c. I had actually submitted a patch
>with
>> > that fix back in August (maybe that is where I remembered the
>problem from).
>> > Wonder what happened with that patch.
>> > 
>> > Would it make sense to drop EM_OR32 and replace it with EM_OPENRISC
>where
>> > it is used ? binutils seems to suggest that EM_OPENRISC is the
>"official"
>> > definition.
>> > 
>> >  arch/openrisc/include/uapi/asm/elf.h | 3 +--
>> >  include/uapi/linux/elf-em.h          | 1 +
>> >  2 files changed, 2 insertions(+), 2 deletions(-)
>> > 
>> > diff --git a/arch/openrisc/include/uapi/asm/elf.h
>b/arch/openrisc/include/uapi/asm/elf.h
>> > index f02ea58..8884276 100644
>> > --- a/arch/openrisc/include/uapi/asm/elf.h
>> > +++ b/arch/openrisc/include/uapi/asm/elf.h
>> > @@ -55,9 +55,8 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG];
>> >  /* A placeholder; OR32 does not have fp support yes, so no fp regs
>for now.  */
>> >  typedef unsigned long elf_fpregset_t;
>> >  
>> > -/* This should be moved to include/linux/elf.h */
>> > +/* EM_OPENRISC is defined in linux/elf-em.h */
>> >  #define EM_OR32         0x8472
>> > -#define EM_OPENRISC     92     /* OpenRISC 32-bit embedded
>processor */
>> >  
>> >  /*
>> >   * These are used to set parameters in the core dumps.
>> > diff --git a/include/uapi/linux/elf-em.h
>b/include/uapi/linux/elf-em.h
>> > index 01529bd..aa90bc9 100644
>> > --- a/include/uapi/linux/elf-em.h
>> > +++ b/include/uapi/linux/elf-em.h
>> > @@ -32,6 +32,7 @@
>> >  #define EM_V850		87	/* NEC v850 */
>> >  #define EM_M32R		88	/* Renesas M32R */
>> >  #define EM_MN10300	89	/* Panasonic/MEI MN10300, AM33 */
>> > +#define EM_OPENRISC     92     /* OpenRISC 32-bit embedded
>processor */
>> >  #define EM_BLACKFIN     106     /* ADI Blackfin Processor */
>> >  #define EM_TI_C6000	140	/* TI C6X DSPs */
>> >  #define EM_AARCH64	183	/* ARM 64 bit */
>> 
>> 

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