Re: [PATCH v4 01/17] Xen: ACPI: Hide UART used by Xen

From: Rafael J. Wysocki
Date: Sat Feb 06 2016 - 05:24:01 EST


On Fri, Feb 5, 2016 at 4:05 AM, Shannon Zhao <zhaoshenglong@xxxxxxxxxx> wrote:
> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
>
> ACPI 6.0 introduces a new table STAO to list the devices which are used
> by Xen and can't be used by Dom0. On Xen virtual platforms, the physical
> UART is used by Xen. So here it hides UART from Dom0.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

Well, this doesn't look right to me.

We need to find a nicer way to achieve what you want.

Thanks,
Rafael