Re: [PATCH 2/2] xen/x86: detect support for extended destination ID

From: Juergen Gross
Date: Mon Feb 07 2022 - 04:15:24 EST


On 20.01.22 16:25, Roger Pau Monne wrote:
Xen allows the usage of some previously reserved bits in the IO-APIC
RTE and the MSI address fields in order to store high bits for the
target APIC ID. Such feature is already implemented by QEMU/KVM and
HyperV, so in order to enable it just add the handler that checks for
it's presence.

Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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