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SubjectRe: [PATCH v3 20/25] ARM: owl: Implement CPU enable-method for S500
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Am 01.03.2017 um 11:40 schrieb Andreas Färber:
> Am 01.03.2017 um 08:19 schrieb kbuild test robot:
>> Hi Andreas,
>>
>> [auto build test ERROR on next-20170228]
>> [also build test ERROR on v4.10]
>> [cannot apply to robh/for-next linus/master linux/master v4.9-rc8 v4.9-rc7 v4.9-rc6]
>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>
>> url: https://github.com/0day-ci/linux/commits/Andreas-F-rber/ARM-Initial-Actions-Semi-S500-and-S900-enablement/20170301-110028
>> config: arm-allmodconfig (attached as .config)
>> compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
>> reproduce:
>> wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # save the attached .config to linux build tree
>> make.cross ARCH=arm
>>
>> All errors (new ones prefixed by >>):
>>
>> arch/arm/mach-actions/headsmp.S: Assembler messages:
>>>> arch/arm/mach-actions/headsmp.S:43: Error: selected processor does not support `dsb' in ARM mode
>>>> arch/arm/mach-actions/headsmp.S:44: Error: selected processor does not support `isb' in ARM mode
>>
>> vim +43 arch/arm/mach-actions/headsmp.S
>>
>> 37 mov r6, r2, lsl r0
>> 38 orr r5, r5, r6 @ Reg = (Temp<<WayShift)|(NumSets<<SetShift)
>> 39 mcr p15, 0, r5, c7, c6, 2
>> 40 bgt 2b
>> 41 cmp r2, #0
>> 42 bgt 1b
>> > 43 dsb
>> > 44 isb
>
> Any suggestion what to do about this error? Obviously it built fine for
> me, and the only thing I spotted in the attached config was that it's
> apparently a BE8 build...

And it has V6 enabled. If I set

AFLAGS_headsmp.o := -Wa,-march=armv7-a

then the error seems resolved.

Regards,
Andreas

--
SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)

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