replace d->nr_pirqs sized arrays with radix tree

With this it is questionable whether retaining struct domain's
nr_pirqs is actually necessary - the value now only serves for bounds
checking, and this boundary could easily be nr_irqs.

Another thing to consider is whether it's worth storing the pirq
number in struct pirq, to avoid passing the number and a pointer to
quite a number of functions.

Note that ia64, the build of which is broken currently anyway, is only
partially fixed up.

Signed-off-by: Jan Beulich <jbeulich@novell.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/xen/include/xen/iommu.h b/xen/include/xen/iommu.h
index 2dee3f2982..4d4f4c4bf3 100644
--- a/xen/include/xen/iommu.h
+++ b/xen/include/xen/iommu.h
@@ -88,7 +88,9 @@ int iommu_unmap_page(struct domain *d, unsigned long gfn);
 void iommu_pte_flush(struct domain *d, u64 gfn, u64 *pte, int order, int present);
 void iommu_set_pgd(struct domain *d);
 void iommu_domain_teardown(struct domain *d);
-int hvm_do_IRQ_dpci(struct domain *d, unsigned int irq);
+
+struct pirq;
+int hvm_do_IRQ_dpci(struct domain *, struct pirq *);
 int dpci_ioport_intercept(ioreq_t *p);
 int pt_irq_create_bind_vtd(struct domain *d,
                            xen_domctl_bind_pt_irq_t *pt_irq_bind);