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Juergen Gross e62098357b xen/events: add a new "late EOI" evtchn framework 
commit 54c9de89895e0a36047fcc4ae754ea5b8655fb9d upstream.

In order to avoid tight event channel related IRQ loops add a new
framework of "late EOI" handling: the IRQ the event channel is bound
to will be masked until the event has been handled and the related
driver is capable to handle another event. The driver is responsible
for unmasking the event channel via the new function xen_irq_lateeoi().

This is similar to binding an event channel to a threaded IRQ, but
without having to structure the driver accordingly.

In order to support a future special handling in case a rogue guest
is sending lots of unsolicited events, add a flag to xen_irq_lateeoi()
which can be set by the caller to indicate the event was a spurious
one.

This is part of XSA-332.

Cc: stable@vger.kernel.org
Reported-by: Julien Grall <julien@xen.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Wei Liu <wl@xen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-03-16 16:39:37 +08:00
..
accessibility Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
acpi ACPI: Always build evged in 2021-03-16 16:38:08 +08:00
amba Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
android binder: Remove bogus warning on failed same-process transaction 2021-03-16 16:38:35 +08:00
ata ata: sata_rcar: Fix DMA boundary mask 2021-03-16 16:39:35 +08:00
atm atm: eni: fix the missed pci_disable_device() for eni_init_one() 2021-03-16 16:37:33 +08:00
auxdisplay Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
base driver core: Fix probe_count imbalance in really_probe() 2021-03-16 16:37:56 +08:00
bcma Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
block rbd: require global CAP_SYS_ADMIN for mapping and unmapping 2021-03-16 16:36:06 +08:00
bluetooth Bluetooth: btusb: Fix memleak in btusb_mtk_submit_wmt_recv_urb 2021-03-16 16:39:23 +08:00
bus bus: hisi_lpc: Fixup IO ports addresses to avoid use-after-free in host removal 2021-03-16 16:36:56 +08:00
cdrom Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
char ipmi_si: Fix wrong return value in try_smi_init() 2021-03-16 16:38:45 +08:00
clk clk: imx8mq: Fix usdhc parents order 2021-03-16 16:39:03 +08:00
clocksource clocksource/drivers/timer-gx6605s: Fixup counter reload 2021-03-16 16:37:44 +08:00
connector Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
counter counter: 104-quad-8: Add lock guards - generic interface 2021-03-16 16:27:07 +08:00
cpufreq cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier 2021-03-16 16:38:57 +08:00
cpuidle cpuidle: Fixup IRQ state 2021-03-16 16:35:25 +08:00
crypto chelsio/chtls: fix tls record info to user 2021-03-16 16:39:30 +08:00
dax dax: Fix alloc_dax_region() compile warning 2021-03-16 16:36:36 +08:00
dca Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
devfreq PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out 2021-03-16 16:36:35 +08:00
dio Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dma dmaengine: dw: Activate FIFO-mode for memory peripherals only 2021-03-16 16:39:25 +08:00
dma-buf dmabuf: fix NULL pointer dereference in dma_buf_release() 2021-03-16 16:37:40 +08:00
edac EDAC/ti: Fix handling of platform_get_irq() error 2021-03-16 16:38:22 +08:00
eisa Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
extcon extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()' 2021-03-16 16:30:26 +08:00
firewire Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
firmware firmware: arm_sdei: Use cpus_read_lock() to avoid races with cpuhp 2021-03-16 16:36:56 +08:00
fpga fpga: dfl: fix bug in port reset handshake 2021-03-16 16:32:23 +08:00
fsi Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
gnss gnss: sirf: fix error return code in sirf_probe() 2021-03-16 16:29:47 +08:00
gpio gpio: aspeed: fix ast2600 bank properties 2021-03-16 16:37:49 +08:00
gpu Fix use after free in get_capset_info callback. 2021-03-16 16:39:22 +08:00
greybus Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
hid HID: ite: Add USB id match for Acer One S1003 keyboard dock 2021-03-16 16:39:22 +08:00
hsi Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
hv Drivers: hv: vmbus: Add timeout to vmbus_wait_for_unload 2021-03-16 16:36:17 +08:00
hwmon hwmon: (pmbus/max34440) Fix status register reads for MAX344{51,60,61} 2021-03-16 16:38:27 +08:00
hwspinlock Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
hwtracing coresight: etm: perf: Fix warning caused by etm_setup_aux failure 2021-03-16 16:38:43 +08:00
i2c i2c: core: Restore acpi_walk_dep_device_list() getting called after registering the ACPI i2c devs 2021-03-16 16:39:11 +08:00
i3c i3c: master: Fix error return in cdns_i3c_master_probe() 2021-03-16 16:38:56 +08:00
ide Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
idle Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
iio iio: adc: stm32-adc: fix runtime autosuspend delay when slow polling 2021-03-16 16:38:43 +08:00
infiniband RDMA/addr: Fix race with netevent_callback()/rdma_addr_cancel() 2021-03-16 16:39:34 +08:00
input Input: sun4i-ps2 - fix handling of platform_get_irq() error 2021-03-16 16:39:05 +08:00
interconnect Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
iommu iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb() 2021-03-16 16:38:01 +08:00
ipack ipack: tpci200: fix error return code in tpci200_register() 2021-03-16 16:28:19 +08:00
irqchip irqchip/stm32-exti: Avoid losing interrupts due to clearing pending bits by mistake 2021-03-16 16:35:14 +08:00
isdn Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
leds leds: mlxreg: Fix possible buffer overflow 2021-03-16 16:36:35 +08:00
lightnvm lightnvm: fix out-of-bounds write to array devices->info[] 2021-03-16 16:39:10 +08:00
macintosh macintosh/via-macii: Access autopoll_devs when inside lock 2021-03-16 16:33:39 +08:00
mailbox mailbox: avoid timer start from callback 2021-03-16 16:38:59 +08:00
mcb Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md md/bitmap: fix memory leak of temporary bitmap 2021-03-16 16:39:11 +08:00
media media: venus: core: Fix runtime PM imbalance in venus_probe 2021-03-16 16:39:15 +08:00
memory memory: fsl-corenet-cf: Fix handling of platform_get_irq() error 2021-03-16 16:39:07 +08:00
memstick memstick: Skip allocating card when removing host 2021-03-16 16:37:44 +08:00
message scsi: mptscsih: Fix read sense data size 2021-03-16 16:31:28 +08:00
mfd mfd: sm501: Fix leaks in probe() 2021-03-16 16:38:44 +08:00
misc misc: rtsx: do not setting OC_POWER_DOWN reg in rtsx_pci_init_ocp() 2021-03-16 16:39:36 +08:00
mmc mmc: sdio: Check for CISTPL_VERS_1 buffer size 2021-03-16 16:39:15 +08:00
mtd mtd: spinand: gigadevice: Add QE Bit 2021-03-16 16:38:55 +08:00
mux Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
net p54: avoid accessing the data mapped to streaming DMA 2021-03-16 16:39:34 +08:00
nfc NFC: st95hf: Fix memleak in st95hf_in_send_cmd 2021-03-16 16:35:54 +08:00
ntb NTB: hw: amd: fix an issue about leak system resources 2021-03-16 16:39:10 +08:00
nubus Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
nvdimm libnvdimm/security: ensure sysfs poll thread woke up and fetch updated attr 2021-03-16 16:34:18 +08:00
nvme nvmet: fix uninitialized work for zero kato 2021-03-16 16:39:10 +08:00
nvmem nvmem: core: fix possibly memleak when use nvmem_cell_info_to_nvmem_cell() 2021-03-16 16:38:43 +08:00
of of: of_mdio: Correct loop scanning logic 2021-03-16 16:31:51 +08:00
opp opp: Prevent memory leak in dev_pm_opp_attach_genpd() 2021-03-16 16:39:19 +08:00
oprofile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
parisc parisc: mask out enable and reserved bits from sba imask 2021-03-16 16:33:54 +08:00
parport Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
pci PCI/IOV: Mark VFs as not implementing PCI_COMMAND_MEMORY 2021-03-16 16:39:00 +08:00
pcmcia Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
perf drivers/perf: thunderx2_pmu: Fix memory resource error handling 2021-03-16 16:38:23 +08:00
phy phy: marvell: comphy: Convert internal SMCC firmware return codes to errno 2021-03-16 16:39:36 +08:00
pinctrl pinctrl: mcp23s08: Fix mcp23x17 precious range 2021-03-16 16:38:38 +08:00
platform platform/x86: mlx-platform: Remove PSU EEPROM configuration 2021-03-16 16:38:46 +08:00
pnp Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
power power: supply: max17040: Correct voltage reading 2021-03-16 16:37:16 +08:00
powercap Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
pps Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ps3 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ptp Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
pwm pwm: img: Fix null pointer access in probe 2021-03-16 16:39:01 +08:00
rapidio rapidio: fix the missed put_device() for rio_mport_add_riodev 2021-03-16 16:38:59 +08:00
ras Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
regulator regulator: resolve supply after creating regulator 2021-03-16 16:38:29 +08:00
remoteproc remoteproc: qcom_q6v5_mss: Validate modem blob firmware size before load 2021-03-16 16:34:10 +08:00
reset Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rpmsg rpmsg: smd: Fix a kobj leak in in qcom_smd_parse_edge() 2021-03-16 16:39:00 +08:00
rtc rtc: ds1374: fix possible race condition 2021-03-16 16:37:01 +08:00
s390 s390/qeth: don't let HW override the configured port role 2021-03-16 16:39:26 +08:00
sbus Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
scsi scsi: ufs: ufs-qcom: Fix race conditions caused by ufs_qcom_testbus_config() 2021-03-16 16:39:25 +08:00
sfi Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
siox Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
slimbus slimbus: qcom-ngd-ctrl: disable ngd in qmi server down callback 2021-03-16 16:38:42 +08:00
soc soc: fsl: qbman: Fix return value on success 2021-03-16 16:39:09 +08:00
soundwire soundwire: bus: disable pm_runtime in sdw_slave_delete 2021-03-16 16:36:55 +08:00
spi spi: omap2-mcspi: Improve performance waiting for CHSTAT 2021-03-16 16:38:40 +08:00
spmi Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ssb Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
staging net: wilc1000: clean up resource in error path of init mon interface 2021-03-16 16:38:40 +08:00
target scsi: target: tcmu: Fix warning: 'page' may be used uninitialized 2021-03-16 16:38:45 +08:00
tc Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tee Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
thermal thermal: rcar_thermal: Handle probe error gracefully 2021-03-16 16:37:03 +08:00
thunderbolt Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tty serial: pl011: Fix lockdep splat when handling magic-sysrq interrupt 2021-03-16 16:39:35 +08:00
uio uio_pdrv_genirq: fix use without device tree and no interrupt 2021-03-16 16:32:12 +08:00
usb usb: gadget: f_ncm: allow using NCM in SuperSpeed Plus gadgets. 2021-03-16 16:39:27 +08:00
vfio vfio iommu type1: Fix memory leak in vfio_iommu_type1_pin_pages 2021-03-16 16:39:03 +08:00
vhost vhost: Use vhost_get_used_size() in vhost_vring_set_addr() 2021-03-16 16:37:54 +08:00
video fbmem: add margin check to fb_check_caps() 2021-03-16 16:39:23 +08:00
virt drivers/virt/fsl_hypervisor: Fix error handling path 2021-03-16 16:38:36 +08:00
virtio virtio_ring: Avoid loop when vq is broken in virtqueue_poll 2021-03-16 16:34:34 +08:00
visorbus Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
vlynq Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
vme Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
w1 w1: omap-hdq: cleanup to add missing newline for some dev_dbg 2021-03-16 16:29:53 +08:00
watchdog watchdog: sp5100: Fix definition of EFCH_PM_DECODEEN3 2021-03-16 16:39:02 +08:00
xen xen/events: add a new "late EOI" evtchn framework 2021-03-16 16:39:37 +08:00
zorro Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00