[PATCH] powerpc/hw_breakpoint: move instruction stepping out of hw_breakpoint_handler()
Ravi Bangoria
ravi.bangoria at linux.ibm.com
Mon Jul 8 13:40:54 AEST 2019
On 7/6/19 1:56 PM, Christophe Leroy wrote:
>
>
> Le 03/07/2019 à 08:20, Ravi Bangoria a écrit :
>>
>>
>> On 6/28/19 9:25 PM, Christophe Leroy wrote:
>>> On 8xx, breakpoints stop after executing the instruction, so
>>> stepping/emulation is not needed. Move it into a sub-function and
>>> remove the #ifdefs.
>>>
>>> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
>>> ---
>>
>> Reviewed-by: Ravi Bangoria <ravi.bangoria at linux.ibm.com>
>>
>> Just one neat below...
>
> Thanks for the review.
>
>>
>> [...]
>>
>>> -#ifndef CONFIG_PPC_8xx
>>> - /* Do not emulate user-space instructions, instead single-step them */
>>> - if (user_mode(regs)) {
>>> - current->thread.last_hit_ubp = bp;
>>> - regs->msr |= MSR_SE;
>>> + if (!IS_ENABLED(CONFIG_PPC_8xx) && !stepping_handler(regs, bp, info->address))
>>
>> May be split this line. It's 86 chars long and checkpatch.pl is warning
>> about this:
>
> Didn't you use arch/powerpc/tools/checkpatch.sh ?
>
> powerpc accepts 90 chars per line.
Hmm.. wasn't aware of it. Thanks!
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