On Fri, Feb 5, 2016 at 4:05 AM, Shannon Zhao [off-list ref] wrote:

From: Shannon Zhao <redacted>

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 <redacted>
Reviewed-by: Stefano Stabellini <redacted>

Well, this doesn't look right to me.

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

Thanks,
Rafael