linux-kernel - Re: pktgen -- arm build failures (Was: linux-next: triage for March 13, 2012)

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Message-ID: <CAP=VYLoQbNqHnc6_hzF5hYZq_=9L5qaGm7TNF1Mh5YZH57yjMQ@mail.gmail.com>
Date:	Tue, 13 Mar 2012 20:52:11 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Russell King <rmk@....linux.org.uk>, tony@...eyournoodle.com,
	netdev <netdev@...r.kernel.org>
Subject: Re: pktgen -- arm build failures (Was: linux-next: triage for March
 13, 2012)

[PG: adding netdev to CC list]

On Tue, Mar 13, 2012 at 8:41 PM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> On Tue, 13 Mar 2012 19:47:07 -0400 Paul Gortmaker <paul.gortmaker@...driver.com> wrote:
>>
>> ARM:netx_defconfig,pnx4008_defconfig
>>       when:   Mar 14, 02:43
>>       why:    net/core/pktgen.c: can't find a register in class 'GENERAL_REGS'
>>       status:
>>       fix:
>>       ref:    http://kisskb.ellerman.id.au/kisskb/buildresult/5869486/
>
> This is this:
>
> net/core/pktgen.c:682:2775: error: can't find a register in class 'GENERAL_REGS' while reloading 'asm'
> net/core/pktgen.c:682:3153: error: can't find a register in class 'GENERAL_REGS' while reloading 'asm'
> net/core/pktgen.c:682:2775: error: 'asm' operand has impossible constraints
> net/core/pktgen.c:682:3153: error: 'asm' operand has impossible constraints
>
> Which is a do_div() call.  The relevant code does not appear to have
> changed, so this may well be a result of our toolchain changing from
> "arm-linux-gcc (GCC) 4.4.0, GNU ld (GNU Binutils) 2.19.1" to
> "arm-unknown-linux-gnueabi-gcc (GCC) 4.6.3, GNU ld (GNU Binutils) 2.22".
>
> Anyone have any thoughts?
> --
> Cheers,
> Stephen Rothwell                    sfr@...b.auug.org.au
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