actually, on this machine, about half the interrupt
sources don't do msi, since msi is the default irq type:
; grep ioapic /dev/irqalloc
#vec.mach irq count cycles type name
65.0 1 59967 793975781 ioapic i8042
65.7 9 0 0 ioapic acpi
66.1 4 66350 8910023002 ioapic COM1
66.3 5 18364273 98144708590 ioapic
usbehci
66.6 11 18182865 162682346167 ioapic
usbehci
; grep msi /dev/irqalloc
65.1 7 0 0 msi
ether1
65.2 5 0 0 msi
ether3
65.4 11 6002102 30018646458 msi
ether0
65.5 11 0 0 msi
ether2
66.4 11 14 248036 msi sdE
(ahci)
- erik