linux-kernel - Re: [PATCH] MIPS: SmartMIPS: Fix build

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Date:	Mon, 7 Oct 2013 17:58:05 +0200
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Markos Chandras <Markos.Chandras@...tec.com>
Cc:	Thierry Reding <thierry.reding@...il.com>,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: SmartMIPS: Fix build

On Mon, Oct 07, 2013 at 04:29:07PM +0100, Markos Chandras wrote:

> On 10/07/13 16:10, Thierry Reding wrote:
> >All CONFIG_CPU_HAS_SMARTMIPS #ifdefs have been removed from code, but
> >the ACX register declaration in struct pt_regs is still protected by it,
> >causing builds to fail. Remove the #ifdef protection and always declare
> >the register.
> >
> >Signed-off-by: Thierry Reding <treding@...dia.com>
> >---
> >  arch/mips/include/asm/ptrace.h | 2 --
> >  1 file changed, 2 deletions(-)
> >
> >diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
> >index 7bba9da..d47bdce 100644
> >--- a/arch/mips/include/asm/ptrace.h
> >+++ b/arch/mips/include/asm/ptrace.h
> >@@ -33,9 +33,7 @@ struct pt_regs {
> >  	unsigned long cp0_status;
> >  	unsigned long hi;
> >  	unsigned long lo;
> >-#ifdef CONFIG_CPU_HAS_SMARTMIPS
> >  	unsigned long acx;
> >-#endif
> >  	unsigned long cp0_badvaddr;
> >  	unsigned long cp0_cause;
> >  	unsigned long cp0_epc;
> >
> 
> Hi Thierry,
> 
> Looks good to me. Thanks!
> 
> Reviewed-by: Markos Chandras <markos.chandras@...tec.com>

Looking good - but I've already pulled the offending patch.  Processor
specific registers in the register frame have historically been a PITA -
in particular because much of what's requiring space there is also
requiring space in the signal frame and that's a kernel ABI.

  Ralf
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