Re: [RESEND PATCH v2] acpi: Use access_width over register_width for system memory accesses

[Jarred White]

On 12/22/2023 4:00 PM, Easwar Hariharan wrote:
>  >> @@ -784,7 +792,8 @@ int acpi_cppc_processor_probe(struct 
> acpi_processor *pr)
>  >>                                                          goto out_free;
>  >>                                          }
>  >>
>  >> -                                       addr = 
> ioremap(gas_t->address, gas_t->bit_width/8);
>  >> +                                       access_width = 
> ACCESS_WIDTH_TO_BITS(gas_t) / 8;
>  >
>  > What would happen if the platform firmware incorrectly provided
>  > reg->access_witdh == 0?
>  >

Unfortunately, we have no hardware platform with this configuration to 
test with. What is the level of concern here? Were there previous 
changes that raised this similar concerns?


Thanks,
Jarred