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qemu/include/hw
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Paul Durrant c4583c8c39 xen-bus: reduce scope of backend watch 
Currently a single watch on /local/domain/X/backend is registered by each
QEMU process running in service domain X (where X is usually 0). The purpose
of this watch is to ensure that QEMU is notified when the Xen toolstack
creates a new device backend area.
Such a backend area is specific to a single frontend area created for a
specific guest domain and, since each QEMU process is also created to service
a specfic guest domain, it is unnecessary and inefficient to notify all QEMU
processes.
Only the QEMU process associated with the same guest domain need
receive the notification. This patch re-factors the watch registration code
such that notifications are targetted appropriately.

Reported-by: Jerome Leseinne <jerome.leseinne@gmail.com>
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20201001081500.1026-1-paul@xen.org>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
2020-10-19 16:32:41 +01:00
..
acpi qom: fix objects with improper parent type 2020-10-12 11:50:22 -04:00
adc Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
arm hw/arm/virt: Implement kvm-steal-time 2020-10-08 15:24:32 +01:00
audio qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
block Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
char hw/char/serial: Make 'wakeup' property boolean 2020-09-30 19:09:20 +02:00
core cpu: Introduce CPU model deprecation API 2020-10-14 15:28:54 -04:00
cpu Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
cris sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
display edid: use physical dimensions if available 2020-09-29 10:08:25 +02:00
dma Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
firmware machine: Refactor smp-related call chains to pass MachineState 2019-07-05 17:07:36 -03:00
gpio Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
hyperv Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
i2c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
i386 microvm: add pcie support. 2020-10-01 15:28:55 +01:00
ide ide: remove magic constants from the device register 2020-10-01 13:04:16 -04:00
input input: tsc2xxx fix. 2020-09-22 21:11:10 +01:00
intc Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ipack Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ipmi Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
isa Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
kvm target/i386: always create kvmclock device 2020-09-30 19:11:36 +02:00
lm32 Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
m68k Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
mem qapi: Restrict device memory commands to machine code 2020-09-29 15:41:36 +02:00
mips hw/mips: Simplify code using ROUND_UP(INITRD_PAGE_SIZE) 2020-10-17 13:59:40 +02:00
misc qom: fix objects with improper parent type 2020-10-12 11:50:22 -04:00
net Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
nubus Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
nvram Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
pci Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
pci-bridge Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
pci-host uninorth: use qdev gpios for PCI IRQs 2020-10-18 16:21:42 +01:00
ppc spapr: add spapr_machine_using_legacy_numa() helper 2020-10-09 10:52:09 +11:00
rdma Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
riscv Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
rtc m48t59: remove legacy m48t59_init() function 2020-10-18 16:21:42 +01:00
rx Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
s390x s390: guest support for diagnose 0x318 2020-10-02 13:52:49 +02:00
scsi scsi/scsi_bus: Add scsi_device_get 2020-10-12 11:50:51 -04:00
sd Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
semihosting semihosting: add qemu_semihosting_console_inc for SYS_READC 2020-01-09 11:41:29 +00:00
sh4 hw/sh4: Extract timer definitions to 'hw/timer/tmu012.h' 2020-06-22 18:37:12 +02:00
southbridge Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
sparc Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ssi Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
timer Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
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 Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
vfio Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio vhost-scsi: support inflight io track 2020-09-30 19:09:20 +02:00
watchdog Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
xen xen-bus: reduce scope of backend watch 2020-10-19 16:32:41 +01:00
xtensa Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
boards.h numa: drop support for '-numa node' (without memory specified) 2020-09-30 19:09:20 +02:00
clock.h hw/core/clock: Add the clock_new helper function 2020-10-16 18:58:10 +02:00
elf_ops.h hw/elf_ops: Do not ignore write failures when loading ELF 2020-06-10 12:10:23 -04:00
fw-path-provider.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
hotplug.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
hw.h Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
ide.h hw/ide: Move MAX_IDE_DEVS define to hw/ide/internal.h 2020-03-17 12:22:36 -04:00
irq.h include/hw/irq.h: New function qemu_irq_is_connected() 2020-08-03 17:55:03 +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 Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
or-irq.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
pcmcia.h Use OBJECT_DECLARE_TYPE when possible 2020-09-18 14:12:32 -04:00
platform-bus.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ptimer.h ptimer: Remove old ptimer_init_with_bh() API 2019-11-11 13:44:16 +00:00
qdev-clock.h hw/qdev-clock: Avoid calling qdev_connect_clock_in after DeviceRealize 2020-08-28 10:02:46 +01:00
qdev-core.h device-core: use atomic_set on .realized property 2020-10-12 11:50:51 -04:00
qdev-dma.h Supply missing header guards 2019-06-12 13:20:21 +02:00
qdev-properties.h hw/core/qdev-properties: Export qdev_prop_enum 2020-10-06 11:09:35 -04:00
register.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
registerfields.h hw/registerfields: Prefix local variables with underscore in macros 2020-05-27 11:23:07 -07:00
resettable.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
stream.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
sysbus.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
usb.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
vmstate-if.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00