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SubjectRe: [PATCH] powerpc/hw_breakpoint: move instruction stepping out of hw_breakpoint_handler()
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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@c-s.fr>
> ---

Reviewed-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>

Just one neat below...

[...]

> -#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:

WARNING: line over 80 characters
#257: FILE: arch/powerpc/kernel/hw_breakpoint.c:282:
+ if (!IS_ENABLED(CONFIG_PPC_8xx) && !stepping_handler(regs, bp, info->address))

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