Eric Farman 6178d4689a vfio-ccw: Permit missing IRQs ... Commit 690e29b911 ("vfio-ccw: Refactor ccw irq handler") changed one of the checks for the IRQ notifier registration from saying "the host needs to recognize the only IRQ that exists" to saying "the host needs to recognize ANY IRQ that exists." And this worked fine, because the subsequent change to support the CRW IRQ notifier doesn't get into this code when running on an older kernel, thanks to a guard by a capability region. The later addition of the REQ(uest) IRQ by commit b2f96f9e4f ("vfio-ccw: Connect the device request notifier") broke this assumption because there is no matching capability region. Thus, running new QEMU on an older kernel fails with: vfio: unexpected number of irqs 2 Let's adapt the message here so that there's a better clue of what IRQ is missing. Furthermore, let's make the REQ(uest) IRQ not fail when attempting to register it, to permit running vfio-ccw on a newer QEMU with an older kernel. Fixes: b2f96f9e4f ("vfio-ccw: Connect the device request notifier") Signed-off-by: Eric Farman <farman@linux.ibm.com> Message-Id: <20210421152053.2379873-1-farman@linux.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>		2021-05-20 14:19:30 +02:00
..
amd-xgbe.c
ap.c	Do not include cpu.h if it's not really necessary	2021-05-02 17:24:51 +02:00
calxeda-xgmac.c
ccw.c	vfio-ccw: Permit missing IRQs	2021-05-20 14:19:30 +02:00
common.c	vfio/migrate: Move switch of dirty tracking into vfio_memory_listener	2021-03-16 10:06:44 -06:00
display.c	Do not include sysemu/sysemu.h if it's not really necessary	2021-05-02 17:24:50 +02:00
igd.c	docs: Fix some typos (found by codespell)	2020-11-18 09:29:41 +01:00
Kconfig	hw/vfio: Move the IGD quirk code to a separate file	2020-02-06 11:55:42 -07:00
meson.build	vfio: Add migration region initialization and finalize function	2020-11-01 12:30:50 -07:00
migration.c	Do not include cpu.h if it's not really necessary	2021-05-02 17:24:51 +02:00
pci-quirks.c	hw: Remove superfluous includes of hw/hw.h	2021-05-02 17:24:50 +02:00
pci.c	Do not include sysemu/sysemu.h if it's not really necessary	2021-05-02 17:24:50 +02:00
pci.h	hw/vfio/pci-quirks: Replace the word 'blacklist'	2021-03-16 10:06:44 -06:00
platform.c	hw/vfio: Use lock guard macros	2020-11-01 12:30:52 -07:00
spapr.c	Do not include cpu.h if it's not really necessary	2021-05-02 17:24:51 +02:00
trace-events	hw/vfio/pci-quirks: Replace the word 'blacklist'	2021-03-16 10:06:44 -06:00
trace.h	trace: switch position of headers to what Meson requires	2020-08-21 06:18:24 -04:00