OpenE2K/qemu-e2k
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c4583c8c39
qemu-e2k/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
..
9pfs 9pfs: suppress performance warnings on qtest runs 2020-10-19 14:25:40 +02:00
acpi hw/acpi/piix4: Rename piix4_pm_add_propeties() to piix4_pm_add_properties() 2020-10-13 13:33:45 +02:00
adc
alpha load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
arm hw/arm/virt: Implement kvm-steal-time 2020-10-08 15:24:32 +01:00
audio Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
avr
block hw/block/nvme: Simplify timestamp sum 2020-10-13 13:33:45 +02:00
char hw/char/serial: remove duplicate .class_init in serial_mm_info 2020-10-13 13:33:46 +02:00
core MIPS patches queue 2020-10-19 10:52:57 +01:00
cpu cpu/core: Register core-id and nr-threads as class properties 2020-09-22 16:48:29 -04:00
cris load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
display vga-pci: Register "big-endian-framebuffer" as class property 2020-10-13 15:56:30 -04:00
dma Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
gpio Pull request trivial patches 20200919 2020-09-22 15:42:23 +01:00
hppa Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
hyperv qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
i2c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
i386 xen: xenguest is not used so is not needed 2020-10-19 16:22:58 +01:00
ide hw/ide: restore replay support of IDE 2020-10-09 17:27:55 +01:00
input Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
intc hw/intc/armv7m_nvic: Only show ID register values for Main Extension CPUs 2020-10-01 15:31:00 +01:00
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 x86: ich9: expose "smi_negotiated_features" as a QOM property 2020-09-29 02:15:24 -04:00
lm32
m68k Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
mem
microblaze load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
mips hw/mips: Remove exit(1) in case of missing ROM 2020-10-17 13:59:40 +02:00
misc macio: don't reference serial_hd() directly within the device 2020-10-18 16:21:42 +01:00
moxie load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
net qdev: add "check if address free" callback for buses 2020-10-12 11:50:50 -04:00
nios2 load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
nubus
nvram hw/nvram: Always register FW_CFG_DATA_GENERATOR_INTERFACE 2020-10-12 11:50:20 -04:00
openrisc
pci hw/pci: Fix typo in PCI hot-plug error message 2020-10-13 13:33:45 +02:00
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
pcmcia
ppc mac_oldworld: Change PCI address of macio to match real hardware 2020-10-19 08:11:21 +01:00
rdma qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
riscv load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
rtc m48t59: remove legacy m48t59_init() function 2020-10-18 16:21:42 +01:00
rx
s390x error: Use error_fatal to simplify obvious fatal errors (again) 2020-10-09 08:36:23 +02:00
scsi scsi/scsi_bus: fix races in REPORT LUNS 2020-10-12 11:50:51 -04:00
sd qdev: add "check if address free" callback for buses 2020-10-12 11:50:50 -04:00
semihosting
sh4 Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
smbios hw/smbios: report error if table size is too large 2020-09-29 02:15:24 -04:00
sparc sun4m: use qdev properties instead of legacy m48t59_init() function 2020-10-18 16:21:42 +01:00
sparc64 sun4u: use qdev properties instead of legacy m48t59_init() function 2020-10-18 16:21:42 +01:00
ssi hw/ssi/npcm7xx_fiu: Fix handling of unsigned integer 2020-10-08 15:24:32 +01:00
timer Pull request trivial patches 20200919 2020-09-22 15:42:23 +01:00
tpm Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
tricore
unicore32
usb hw/usb/hcd-dwc2: fix divide-by-zero in dwc2_handle_packet() 2020-10-19 09:17:21 +02:00
vfio vfio-ccw: plug memory leak while getting region info 2020-10-02 13:52:49 +02:00
virtio Error reporting patches for 2020-10-09 2020-10-09 14:47:45 +01:00
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
xenpv
xtensa load_elf: Remove unused address variables from callers 2020-09-25 16:52:08 -07:00
Kconfig
meson.build