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Viresh Kumar 9e90e58c11 xen: evtchn: Allow shared registration of IRQ handers 
Currently the handling of events is supported either in the kernel or
userspace, but not both.

In order to support fast delivery of interrupts from the guest to the
backend, we need to handle the Queue notify part of Virtio protocol in
kernel and the rest in userspace.

Update the interrupt handler registration flag to IRQF_SHARED for event
channels, which would allow multiple entities to bind their interrupt
handler for the same event channel port.

Also increment the reference count of irq_info when multiple entities
try to bind event channel to irqchip, so the unbinding happens only
after all the users are gone.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/99b1edfd3147c6b5d22a5139dab5861e767dc34a.1697439990.git.viresh.kumar@linaro.org
Signed-off-by: Juergen Gross <jgross@suse.com>
2023-10-16 15:18:33 +02:00
..
accel accel/ivpu: Use cached buffers for FW loading 2023-09-27 07:40:43 +02:00
accessibility
acpi Fix a Longsoon build warning by harmonizing the arch_[un]register_cpu() 2023-10-15 08:44:56 -07:00
amba
android binder: fix memory leaks of spam and pending work 2023-10-05 12:48:08 +02:00
ata ata: pata_parport: fit3: implement IDE command set registers 2023-10-10 14:42:22 +09:00
atm
auxdisplay drm for 6.6-rc1 2023-08-30 13:34:34 -07:00
base regmap: Fix for v6.4 2023-10-03 11:57:37 -07:00
bcma
block block-6.6-2023-10-06 2023-10-06 15:43:19 -07:00
bluetooth Bluetooth: btusb: add shutdown function for QCA6174 2023-09-20 10:55:29 -07:00
bus bus: ti-sysc: Fix SYSC_QUIRK_SWSUP_SIDLE_ACT handling for uart wake-up 2023-09-13 10:24:53 +03:00
cache cache: Add L2 cache management for Andes AX45MP RISC-V core 2023-09-01 09:08:59 -07:00
cdrom
cdx
char Hi, 2023-09-13 11:44:20 -07:00
clk clk: tegra: fix error return case for recalc_rate 2023-09-12 10:56:05 -07:00
clocksource Updates for clocksource/clockevent drivers: 2023-09-04 13:15:57 -07:00
comedi Revert "comedi: add HAS_IOPORT dependencies" 2023-09-12 15:49:20 +02:00
connector
counter First set of Counter fixes for 6.6 2023-10-02 13:13:15 +02:00
cpufreq cpufreq: Support per-policy performance boost 2023-08-29 20:51:40 +02:00
cpuidle powerpc updates for 6.6 2023-08-31 12:43:10 -07:00
crypto This update includes the following changes: 2023-08-29 11:23:29 -07:00
cxl cxl/acpi: Annotate struct cxl_cxims_data with __counted_by 2023-09-22 14:31:04 -07:00
dax mm: remove enum page_entry_size 2023-08-24 16:20:30 -07:00
dca
devfreq
dio
dma dmaengine fixes for v6.6 2023-10-13 08:52:57 -07:00
dma-buf dma-buf: add dma_fence_timestamp helper 2023-10-05 11:05:58 +02:00
edac Intel EDAC fixes: 2023-08-30 19:23:00 -07:00
eisa
extcon
firewire scsi: sd: Differentiate system and runtime start/stop management 2023-09-28 21:23:00 +09:00
firmware ARM: SoC fixes for 6.6 2023-09-30 18:41:37 -07:00
fpga
fsi
gnss
gpio gpio: aspeed: fix the GPIO number passed to pinctrl_gpio_set_config() 2023-10-05 08:41:56 +02:00
gpu amd-drm-fixes-6.6-2023-10-11: 2023-10-13 13:20:24 +10:00
greybus
hid HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect 2023-10-06 16:09:14 +02:00
hsi
hte hte: Explicitly include correct DT includes 2023-08-28 13:31:06 -05:00
hv hyperv-next for v6.6 2023-09-04 11:26:29 -07:00
hwmon hwmon: (nct6775) Fix non-existent ALARM warning 2023-09-18 11:52:18 -07:00
hwspinlock
hwtracing coresight: tmc-etr: Disable warnings for allocation failures 2023-09-20 10:46:30 +01:00
i2c i2c: npcm7xx: Fix callback completion ordering 2023-09-27 21:32:06 +02:00
i3c i3c: master: svc: fix probe failure when no i3c device exist 2023-09-06 01:21:47 +02:00
idle Perf events changes for v6.6: 2023-08-28 16:35:01 -07:00
iio iio: pressure: ms5611: ms5611_prom_is_valid false negative bug 2023-10-05 18:06:46 +01:00
infiniband RDMA/core: Require admin capabilities to set system parameters 2023-10-05 20:01:47 +03:00
input Input updates for v6.6-rc5 2023-10-13 23:19:16 -07:00
interconnect This pull request is full of clk driver changes. In fact, there aren't any 2023-08-30 19:53:39 -07:00
iommu iommu/vt-d: Avoid memory allocation in iommu_suspend() 2023-09-25 16:10:36 +02:00
ipack
irqchip A set of updates for interrupt chip drivers: 2023-10-10 11:14:07 -07:00
isdn
leds leds: Drop BUG_ON check for LED_COLOR_ID_MULTI 2023-09-19 15:16:23 +01:00
macintosh powerpc updates for 6.6 2023-08-31 12:43:10 -07:00
mailbox mailbox: qcom-ipcc: fix incorrect num_chans counting 2023-09-05 10:11:01 -05:00
mcb mcb: remove is_added flag from mcb_device struct 2023-10-05 09:50:14 +02:00
md This push fixes a 6.5 regression in dm-crypt. 2023-10-10 10:47:35 -07:00
media media: i2c: ov8858: Don't set fwnode in the driver 2023-10-11 15:26:16 +02:00
memory
memstick
message
mfd Couple of small fixes, including: 2023-10-05 11:03:20 -07:00
misc misc: rtsx: Fix some platforms can not boot and move the l1ss judgment to probe 2023-09-25 10:48:19 +02:00
mmc TTY/Serial driver changes for 6.6-rc1 2023-09-01 09:38:00 -07:00
most
mtd ubi: Refuse attaching if mtd's erasesize is 0 2023-09-07 21:59:04 +02:00
mux mux: Explicitly include correct DT includes 2023-08-28 13:36:24 -05:00
net virtio_net: fix the missing of the dma cpu sync 2023-10-15 11:49:57 -07:00
nfc NFC: nxp: add NXP1002 2023-08-30 18:32:24 -07:00
ntb ntb: Check tx descriptors outstanding instead of head/tail for tx queue 2023-08-22 12:38:19 -04:00
nubus
nvdimm nvdimm changes for v6.6 merge window 2023-08-30 20:52:08 -07:00
nvme nvme fixes for Linux 6.6 2023-09-14 16:20:31 -06:00
nvmem nvmem: core: Notify when a new layout is registered 2023-08-23 16:34:02 +02:00
of of: overlay: Reorder struct fragment fields kerneldoc 2023-10-02 11:34:23 -05:00
opp
parisc parisc: iosapic.c: Fix sparse warnings 2023-08-31 21:42:42 +02:00
parport TTY/Serial driver changes for 6.6-rc1 2023-09-01 09:38:00 -07:00
pci pci-v6.6-fixes-2 2023-10-06 09:11:13 -07:00
pcmcia
peci
perf RISC-V Fixes for 6.6-rc6 2023-10-13 09:17:48 -07:00
phy phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers 2023-10-06 10:59:52 +01:00
pinctrl pinctrl: renesas: rzn1: Enable missing PINMUX 2023-10-12 09:10:40 +02:00
platform platform/x86: hp-wmi:: Mark driver struct with __refdata to prevent section mismatch warning 2023-10-06 15:09:40 +02:00
pmdomain pmdomain: imx: scu-pd: correct DMA2 channel 2023-10-05 00:28:52 +02:00
pnp
power power: supply: qcom_battmgr: fix enable request endianness 2023-09-30 21:00:20 +02:00
powercap powercap: intel_rapl: Fix invalid setting of Power Limit 4 2023-09-06 22:21:22 +02:00
pps
ps3
ptp ptp: ocp: Fix error handling in ptp_ocp_device_init 2023-10-02 07:19:22 +01:00
pwm pwm: Changes for v6.6-rc1 2023-09-07 18:05:58 -07:00
rapidio
ras
regulator regulator/core: Revert "fix kobject release warning and memory leak in regulator_register()" 2023-09-26 17:26:08 +02:00
remoteproc remoteproc updates for v6.6 2023-09-04 15:12:26 -07:00
reset This pull request is full of clk driver changes. In fact, there aren't any 2023-08-30 19:53:39 -07:00
rpmsg rpmsg updates for v6.6 2023-09-04 15:08:52 -07:00
rtc RTC for 6.6 2023-09-07 16:07:35 -07:00
s390 net/smc: Fix dependency of SMC on ISM 2023-10-10 11:51:41 +02:00
sbus sbus: Explicitly include correct DT includes 2023-08-28 13:36:24 -05:00
scsi scsi: Do not rescan devices with a suspended queue 2023-10-10 14:42:22 +09:00
sh
siox
slimbus
soc ARM: SoC fixes for 6.6, part 2 2023-10-12 11:52:23 -07:00
soundwire soundwire: bus: Make IRQ handling conditionally built 2023-09-21 11:31:33 +02:00
spi spi: spi-gxp: BUG: Correct spi write return value 2023-09-27 17:06:36 +02:00
spmi
ssb
staging staging: media: tegra-video: fix infinite recursion regression 2023-10-02 10:02:53 +02:00
target scsi: target: core: Fix deadlock due to recursive locking 2023-09-27 10:55:29 -04:00
tc
tee ARM: SoC fixes for 6.6, part 2 2023-10-12 11:52:23 -07:00
thermal thermal: sysfs: Fix trip_point_hyst_store() 2023-09-18 13:13:05 +02:00
thunderbolt thunderbolt: Restart XDomain discovery handshake after failure 2023-09-15 13:01:18 +03:00
tty serial: core: Fix checks for tx runtime PM state 2023-10-07 11:23:47 +02:00
ufs scsi: ufs: core: Correct clear TM error log 2023-10-09 21:33:30 -04:00
uio
usb usb: typec: ucsi: Use GET_CAPABILITY attributes data to set power supply scope 2023-10-11 11:39:25 +02:00
vdpa virtio: features 2023-09-04 10:43:44 -07:00
vfio vfio/mdev: Fix a null-ptr-deref bug for mdev_unregister_parent() 2023-09-22 12:48:04 -06:00
vhost vringh: don't use vringh_kiov_advance() in vringh_iov_xfer() 2023-10-04 08:26:48 +01:00
video fbdev/sh7760fb: Depend on FB=y 2023-09-21 10:33:49 +02:00
virt minmax: add in_range() macro 2023-08-24 16:20:18 -07:00
virtio virtio_ring: fix avail_wrap_counter in virtqueue_add_packed 2023-09-03 18:10:24 -04:00
vlynq
w1 w1: ds2482: Switch back to use struct i2c_driver's .probe() 2023-09-13 10:48:42 +02:00
watchdog linux-watchdog 6.6-rc1 tag 2023-09-06 09:19:12 -07:00
xen xen: evtchn: Allow shared registration of IRQ handers 2023-10-16 15:18:33 +02:00
zorro
Kconfig Merge patch series "Add non-coherent DMA support for AX45MP" 2023-09-08 11:24:34 -07:00
Makefile pmdomain: Rename the genpd subsystem to pmdomain 2023-09-13 11:09:21 +02:00