Paolo Bonzini <pbonz...@redhat.com> writes: > Il 16/10/2013 11:51, Markus Armbruster ha scritto: >> Let me try to elaborate, to make sure I understand. >> >> Unlike ordinary ISA devices, the i8259 devices need additional wiring, >> done by code. >> >> For instance, board code like pc_q35_init(), pc_piix.c's pc_init1(), >> mips_malta_init(), ... wire up their IRQ input lines. The slave's IRQ >> output line is wired to the master's IRQ2 in hw/intc/i8259.c for >> isa-i8259, and the kernel for kvm-i8259. The master's IRQ output line >> is wired up by board code (it's complicated). >> >> Correct? If yes, I can turn it into a suitable comment. > > The wiring of the slave to the master is hardcoded into i8259 code. > > The wiring of all 16 lines is set up by board code.
Got it, thanks!
