[PATCH 1/2] powerpc: sstep: Fix load and update instructions

[Sandipan Das]

Hi,

On 25/11/20 3:39 pm, Ravi Bangoria wrote:
> 
>> diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
>> index 855457ed09b5..25a5436be6c6 100644
>> --- a/arch/powerpc/lib/sstep.c
>> +++ b/arch/powerpc/lib/sstep.c
>> @@ -2157,11 +2157,15 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
>>             case 23:    /* lwzx */
>>           case 55:    /* lwzux */
>> +            if (u && (ra == 0 || ra == rd))
>> +                return -1;
> 
> I guess you also need to split case 23 and 55?
> 

'u' takes care of that. It will be set for lwzux but not lwzx.

- Sandipan