xemu/hw/isa
David Woodhouse 886e0a5f31 hw/isa/ich9: Add comment on imperfect emulation of PIC vs. I/O APIC routing
As noted in the comment, the PCI INTx lines are supposed to be routed
to *both* the PIC and the I/O APIC. It's just that we don't cope with
the concept of an IRQ being asserted to two *different* pins on the
two irqchips.

So we have this hack of routing to I/O APIC only if the PIRQ routing to
the PIC is disabled. Which seems to work well enough, even when I try
hard to break it with kexec. But should be explicitly documented and
understood.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <112a09643b8191c4eae7d92fa247a861ab90a9ee.camel@infradead.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-10-04 12:25:17 -04:00
..
Kconfig hw/i386/pc: Create RTC controllers in south bridges 2023-05-19 10:30:46 -04:00
apm.c nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
i82378.c hw/isa/i82378: Remove unused "io" attribute 2023-06-05 07:43:23 +01:00
isa-bus.c hw/isa: Factor isa_bus_get_irq() out of isa_get_irq() 2023-02-27 22:29:02 +01:00
isa-superio.c hw/char/parallel-isa: Export struct ISAParallelState 2023-06-13 11:28:58 +02:00
lpc_ich9.c hw/isa/ich9: Add comment on imperfect emulation of PIC vs. I/O APIC routing 2023-10-04 12:25:17 -04:00
meson.build meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
pc87312.c pc87312: Rename TYPE_PC87312_SUPERIO to TYPE_PC87312 2020-09-09 13:20:22 -04:00
piix3.c hw/isa/piix3: Resolve redundant TYPE_PIIX3_XEN_DEVICE 2023-06-07 15:07:10 +01:00
piix4.c hw/rtc/mc146818rtc: Rename RTCState -> MC146818RtcState 2023-02-27 22:29:02 +01:00
smc37c669-superio.c hw/isa/superio: Correct the license text 2020-04-01 19:00:16 +02:00
trace-events hw/audio/via-ac97: Basic implementation of audio playback 2023-03-08 00:37:48 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vt82c686.c hw/isa/vt82c686: Remove via_isa_set_irq() 2023-07-11 00:11:25 +02:00