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32d0b7be68
qemu/include/hw
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Paul Durrant 32d0b7be68 xen-bus/block: explicitly assign event channels to an AioContext 
It is not safe to close an event channel from the QEMU main thread when
that channel's poller is running in IOThread context.

This patch adds a new xen_device_set_event_channel_context() function
to explicitly assign the channel AioContext, and modifies
xen_device_bind_event_channel() to initially assign the channel's poller
to the QEMU main thread context. The code in xen-block's dataplane is
then modified to assign the channel to IOThread context during
xen_block_dataplane_start() and de-assign it during in
xen_block_dataplane_stop(), such that the channel is always assigned
back to main thread context before it is closed. aio_set_fd_handler()
already deals with all the necessary synchronization when moving an fd
between AioContext-s so no extra code is needed to manage this.

Reported-by: Julien Grall <jgrall@amazon.com>
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20191216143451.19024-1-pdurrant@amazon.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
2020-02-27 11:50:30 +00:00
..
acpi piix4: Add a MC146818 RTC Controller as specified in datasheet 2019-11-05 23:33:12 +01:00
adc include: Make headers more self-contained 2019-08-16 13:31:51 +02:00
arm arm: allwinner: Wire up USB ports 2020-02-21 16:07:02 +00:00
audio Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
block block: Support providing LCHS from user 2019-10-31 11:47:11 -04:00
char mips: inline serial_init() 2020-01-07 17:24:29 +04:00
core cpu: Introduce cpu_class_set_parent_reset() 2020-01-24 20:59:06 +01:00
cpu Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
cris etraxfs: remove PROP_PTR usage 2020-01-07 17:24:29 +04:00
display hw/m68k: add Nubus macfb video card 2019-10-28 19:06:49 +01:00
dma Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
firmware machine: Refactor smp-related call chains to pass MachineState 2019-07-05 17:07:36 -03:00
gpio hw/gpio: Add basic Aspeed GPIO model for AST2400 and AST2500 2019-09-13 16:05:00 +01:00
hyperv hyperv: process POST_MESSAGE hypercall 2018-10-19 13:44:14 +02:00
i2c aspeed/i2c: Add support for DMA transfers 2019-12-16 10:46:34 +00:00
i386 hw/i386/pc: Extract the port92 device 2019-12-17 19:33:51 +01:00
ide hw/ide: Let the DMAIntFunc prototype use a boolean 'is_write' argument 2020-02-20 14:47:08 +01:00
input hppa: add emulation of LASI PS2 controllers 2020-01-27 10:49:51 -08:00
intc hw: replace hw/i386/pc.h with a header just for the i8259 2019-12-17 19:33:49 +01:00
ipack Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
ipmi ipmi: Add support to customize OEM functions 2019-12-17 10:39:47 +11:00
isa hw/isa/isa-bus: cleanup irq functions 2019-12-17 19:33:51 +01:00
kvm Supply missing header guards 2019-06-12 13:20:21 +02:00
lm32 Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
m68k m68k: Add NeXTcube machine 2019-09-07 08:31:51 +02:00
mem nvdimm: add uuid property to nvdimm 2020-02-21 09:15:04 +11:00
mips Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
misc arm/aspeed: actually check RAM size 2020-02-19 16:49:54 +00:00
net hppa: Add support for LASI chip with i82596 NIC 2020-01-27 10:49:51 -08:00
nubus hw/m68k: add Nubus support 2019-10-28 19:06:47 +01:00
nvram fw_cfg: add "modify" functions for all types 2019-10-22 09:39:54 +02:00
pci hw/pci/pci_bridge: Fix typo in comment 2020-02-06 11:10:46 +01:00
pci-bridge Supply missing header guards 2019-06-12 13:20:21 +02:00
pci-host ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge 2020-02-02 14:07:57 +11:00
ppc Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
rdma {hmp, hw/pvrdma}: Expose device internals via monitor interface 2019-03-16 15:52:44 +02:00
riscv riscv: virt: Use Goldfish RTC device 2020-02-10 12:01:38 -08:00
rtc hw: rtc: Add Goldfish RTC device 2020-02-10 12:01:37 -08:00
s390x Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
scsi scsi: Propagate unrealize() callback to scsi-hd 2019-10-31 11:47:25 -04:00
sd hw/sd: Configure number of slots exposed by the ASPEED SDHCI model 2020-01-30 16:02:02 +00:00
semihosting semihosting: add qemu_semihosting_console_inc for SYS_READC 2020-01-09 11:41:29 +00:00
sh4 Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
southbridge hw/pci-host/piix: Extract PIIX3 functions to hw/isa/piix3.c 2019-11-05 23:33:12 +01:00
sparc Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
ssi aspeed/smc: Add AST2600 timings registers 2019-12-16 10:46:34 +00:00
timer Fix typos and docs, trivial changes and RTC devices split 2019-10-25 14:17:08 +01:00
tricore Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
unicore32 hw/unicore32: restrict hw addr defines to source file 2017-12-18 17:07:02 +03:00
usb usb: Add basic code to emulate Chipidea USB IP 2018-02-09 10:40:30 +00:00
vfio vfio: Turn the container error into an Error handle 2019-10-04 18:49:18 +02:00
virtio vhost-vsock: delete vqs in vhost_vsock_unrealize to avoid memleaks 2020-01-22 00:23:07 -05:00
watchdog watchdog/aspeed: Fix AST2600 frequency behaviour 2019-12-16 10:46:34 +00:00
xen xen-bus/block: explicitly assign event channels to an AioContext 2020-02-27 11:50:30 +00:00
xtensa Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
boards.h remove no longer used memory_region_allocate_system_memory() 2020-02-19 16:50:01 +00:00
elf_ops.h hw/core/loader: Let load_elf() populate a field with CPU-specific flags 2020-01-29 19:28:52 +01:00
empty_slot.h include: Make headers more self-contained 2019-08-16 13:31:51 +02:00
fw-path-provider.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
hotplug.h qom: make interface types abstract 2018-12-11 15:45:22 -02:00
hw.h Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
ide.h ide/via: Rename functions to match device name 2019-01-25 14:52:12 -05:00
irq.h Revert "irq: introduce qemu_irq_proxy()" 2019-11-05 23:33:12 +01:00
loader-fit.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
loader.h hw/core/loader: Let load_elf() populate a field with CPU-specific flags 2020-01-29 19:28:52 +01:00
nmi.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
or-irq.h hw/core/or-irq: Increase limit of or-lines to 48 2020-01-23 16:34:15 +00:00
pcmcia.h Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
platform-bus.h platform-bus-device: use device plug callback instead of machine_done notifier 2018-05-10 18:10:56 +01:00
ptimer.h ptimer: Remove old ptimer_init_with_bh() API 2019-11-11 13:44:16 +00:00
qdev-core.h hw/core: deprecate old reset functions and introduce new ones 2020-01-30 16:02:04 +00:00
qdev-dma.h Supply missing header guards 2019-06-12 13:20:21 +02:00
qdev-properties.h qdev: remove extraneous error 2020-01-24 20:59:12 +01:00
register.h hw: register: Run post_write hook on reset 2018-03-01 11:05:43 +00:00
registerfields.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
resettable.h hw/core: deprecate old reset functions and introduce new ones 2020-01-30 16:02:04 +00:00
stream.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sysbus.h sysbus: remove outdated comment 2020-01-07 16:06:59 +04:00
usb.h Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
vmstate-if.h vmstate: add qom interface to get id 2020-01-06 18:41:32 +04:00