Re: [PATCH v3 3/5] x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery

[boris.ostrovsky@xxxxxxxxxx]

On 1/6/21 10:39 AM, David Woodhouse wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
>
> It's useful to be able to test non-vector event channel delivery, to make
> sure Linux will work properly on older Xen which doesn't have it.
>
> It's also useful for those working on Xen and Xen-compatible hypervisors,
> because there are guest kernels still in active use which use PCI INTX
> even when vector delivery is available.
>
> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>


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