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xen-devel
Re: [Xen-devel] Serial console problem with Xen 3.0
On 11 Apr 2006, at 17:00, Ryan wrote:
Hmm... I hadn't tried the latest xen-unstable with that changeset and
you're right, it appears to work now. Is that how the ACPI tables
specify how to disable the serial port? Or is my conclusion about ACPI
completely unrelated to why it wasn't working?
Your analysis was mostly correct I believe. However I don't think
pnpacpi is even explicitly disabling the device or interrupt line. It's
calling into IO-APIC code to set up the routing entry and that code is
deciding to mask the entry because it knows that no device driver is
currently registered on that irq.
-- Keir
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