Re: [PATCH 2/5] xen: Set platform PCI device INTX affinity to CPU0

[boris.ostrovsky@xxxxxxxxxx]

On 12/24/20 6:53 AM, David Woodhouse wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
>
> With INTX or GSI delivery, Xen uses the event channel structures of CPU0.
>
> If the interrupt gets handled by Linux on a different CPU, then no events
> are seen as pending. Rather than introducing locking to allow other CPUs
> to process CPU0's events, just ensure that the PCI interrupts happens
> only on CPU0.
>
> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>


Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>