[PATCH v2 01/52] genirq: Let irq_set_vcpu_affinity() iterate over hierarchy

[Thomas Gleixner]

On Wed, 28 Jun 2017, Marc Zyngier wrote:

> When assigning an interrupt to a vcpu, it is not unlikely that
> the level of the hierarchy implementing irq_set_vcpu_affinity
> is not the top level (think a generic MSI domain on top of a
> virtualization aware interrupt controller).
> 
> In such a case, let's iterate over the hierarchy until we find
> an irqchip implementing it.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>

Reviewed-by: Thomas Gleixner <tglx at linutronix.de>