On 13/02/2018 23:05, dann frazier wrote:
        bool
>
> +config INDIRECT_PIO
> +  bool "Access I/O in non-MMIO mode"
> +  depends on ARM64
> +  help
> +    On some platforms where no separate I/O space exists, there are I/O
> +    hosts which can not be accessed in MMIO mode. Using the logical PIO
> +    mechanism, the host-local I/O resource can be mapped into system
> +    logic PIO space shared with MMIO hosts, such as PCI/PCIE, then the
> +    system can access the I/O devices with the mapped logic PIO through
> +    I/O accessors.
> +    This way has a relatively little I/O performance cost. Please make
grammar nit - s/a relatively/relatively/


Fine, thanks

John

  -dann

> +    sure your devices really need this configure item enabled.
> +


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