Change Details

There were actually two distinct locking domains in xen_intr.c, but they were sharing the same lock. Both xen_intr_port_to_isrc[] and the x86 interrupt structures needed protection. Split these two apart as a precursor to splitting the architecture portions off the file. The call structures around xen_intr_alloc_isrc() were rather perverse. Notably the allocation function should be taking care of locking for interrupt allocation needs and should also be handling the reuse of unused interrupts.

There are actually several distinct locking domains in xen_intr.c, but all were sharing the same lock. Both xen_intr_port_to_isrc[] and the x86 interrupt structures needed protection. Split these two apart as a precursor to splitting the architecture portions off the file. The call structures around xen_intr_alloc_isrc() were rather perverse. Notably the allocation function should be taking care of locking for interrupt allocation needs and should also be handling the reuse of unused interrupts.

There weare actually twoseveral distinct locking domains in xen_intr.c, but they all were sharing the same lock. Both xen_intr_port_to_isrc[] and the x86 x86 interrupt structures needed protection. Split these two apart as a precursor to splitting the architecture portions off the file. The call structures around xen_intr_alloc_isrc() were rather perverse. Notably the allocation function should be taking care of locking for interrupt allocation needs and should also be handling the reuse of unused interrupts.