[PATCH v5 4/8] powerpc/watchpoint: Move DAWR detection logic outside of hw_breakpoint.c
Ravi Bangoria
ravi.bangoria at linux.ibm.com
Tue Aug 25 21:08:17 AEST 2020
Hi Christophe,
>> +static int cache_op_size(void)
>> +{
>> +#ifdef __powerpc64__
>> + return ppc64_caches.l1d.block_size;
>> +#else
>> + return L1_CACHE_BYTES;
>> +#endif
>> +}
>
> You've got l1_dcache_bytes() in arch/powerpc/include/asm/cache.h to do that.
>
>> +
>> +void wp_get_instr_detail(struct pt_regs *regs, struct ppc_inst *instr,
>> + int *type, int *size, unsigned long *ea)
>> +{
>> + struct instruction_op op;
>> +
>> + if (__get_user_instr_inatomic(*instr, (void __user *)regs->nip))
>> + return;
>> +
>> + analyse_instr(&op, regs, *instr);
>> + *type = GETTYPE(op.type);
>> + *ea = op.ea;
>> +#ifdef __powerpc64__
>> + if (!(regs->msr & MSR_64BIT))
>> + *ea &= 0xffffffffUL;
>> +#endif
>
> This #ifdef is unneeded, it should build fine on a 32 bits too.
This patch is just a code movement from one file to another.
I don't really change the logic. Would you mind if I do a
separate patch for these changes (not a part of this series)?
Thanks for review,
Ravi
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