Hi Shannon,
On 24/03/16 15:01, Shannon Zhao wrote:
On 2016年03月23日 02:18, Julien Grall wrote:
+ * Dom0 configures the interrupt, set the interrupt type and
route it to
+ * Dom0.
+ */
+ for( i = NR_LOCAL_IRQS; i < vgic_num_irqs(d); i++ )
+ {
+ desc = irq_to_desc(i);
+ if( desc->action != NULL)
Well some of the SPIs used by Xen may not be registered yet. For
instance the SMMU driver doesn't register any SPIs until it's necessary
(i.e a device is assigned to a domain).
But when SMMU requests some SPI, it will delete the route and
reconfigure the SPI, right?
No, the SMMU driver will fail to request the interrupt if it's already
in use.
Regards,
--
Julien Grall
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