On Tue, Dec 03, 2019 at 04:11:07PM +0100, Jan Beulich wrote:
> On 29.11.2019 12:28, Roger Pau Monne wrote:
> > --- a/xen/arch/x86/io_apic.c
> > +++ b/xen/arch/x86/io_apic.c
> > @@ -562,7 +562,7 @@ set_ioapic_affinity_irq(struct irq_desc *desc, const
> > cpumask_t *mask)
> >
> > dest =
On 29.11.2019 12:28, Roger Pau Monne wrote:
> --- a/xen/arch/x86/io_apic.c
> +++ b/xen/arch/x86/io_apic.c
> @@ -562,7 +562,7 @@ set_ioapic_affinity_irq(struct irq_desc *desc, const
> cpumask_t *mask)
>
> dest = set_desc_affinity(desc, mask);
> if (dest != BAD_APICID) {
> -if (
The IO-APIC code assumes that x2apic being enabled also implies
interrupt remapping being enabled, and hence will use the 32bit
destination field in the IO-APIC entry.
This is safe now, but there's no reason to not enable x2APIC even
without interrupt remapping, and hence the IO-APIC code needs
