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c90bd505a3
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Kevin Wolf c90bd505a3 vhost-user-blk: Check that num-queues is supported by backend 
Creating a device with a number of queues that isn't supported by the
backend is pointless, the device won't work properly and the error
messages are rather confusing.

Just fail to create the device if num-queues is higher than what the
backend supports.

Since the relationship between num-queues and the number of virtqueues
depends on the specific device, this is an additional value that needs
to be initialised by the device. For convenience, allow leaving it 0 if
the check should be skipped. This makes sense for vhost-user-net where
separate vhost devices are used for the queues and custom initialisation
code is needed to perform the check.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1935031
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <20210429171316.162022-7-kwolf@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-05-18 12:57:39 +02:00
..
9pfs hw/9pfs/9p-synth: Replaced qemu_mutex_lock with QEMU_LOCK_GUARD 2021-03-16 11:41:49 +01:00
acpi pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
adc clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
alpha Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
arm pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
audio Drop the deprecated lm32 target 2021-05-12 18:20:25 +02:00
avr hw/avr/atmega.c: use the avr51 cpu for atmega1280 2021-05-13 19:11:42 +02:00
block vhost-user-blk: Check that num-queues is supported by backend 2021-05-18 12:57:39 +02:00
char Miscellaneous patches for 2021-05-12 2021-05-13 20:13:24 +01:00
core numa: Make all callbacks of ram block notifiers optional 2021-05-13 18:21:13 +01:00
cpu cpu/core: Fix "help" of CPU core device types 2021-04-09 16:05:16 -04:00
cris Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
display Drop the deprecated lm32 target 2021-05-12 18:20:25 +02:00
dma Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00
gpio Pull request trivial-branch 20210515 2021-05-17 16:44:47 +01:00
hppa Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
hyperv qdev: Move softmmu properties to qdev-properties-system.h 2020-12-18 15:20:17 -05:00
i2c Add a bus multiplexer device 2021-05-14 14:26:23 +01:00
i386 pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
ide hw: Do not include hw/sysbus.h if it is not necessary 2021-05-02 17:24:50 +02:00
input pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
intc Miscellaneous patches for 2021-05-12 2021-05-13 20:13:24 +01:00
ipack Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ipmi hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
isa ppc patch queue 2021-05-04 2021-05-05 20:29:14 +01:00
m68k Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
mem Pull request trivial-branch 20210515 2021-05-17 16:44:47 +01:00
microblaze Do not include sysemu/sysemu.h if it's not really necessary 2021-05-02 17:24:50 +02:00
mips Trivial patches pull request 20210503 2021-05-05 13:52:00 +01:00
misc Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00
net pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
nios2 Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
nubus hw: Do not include hw/sysbus.h if it is not necessary 2021-05-02 17:24:50 +02:00
nvram Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
openrisc Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
pci Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
pci-bridge Kconfig: Compile PXB for ARM_VIRT 2021-01-17 06:42:54 -05:00
pci-host hw/pci-host: Do not build gpex-acpi.c if GPEX is not selected 2021-05-13 18:12:40 +02:00
pcmcia hw/pcmcia: Do not register PCMCIA type if not required 2021-05-02 17:24:50 +02:00
ppc ppc patch queue 2021-05-04 2021-05-05 20:29:14 +01:00
rdma pvrdma: wean code off pvrdma_ring.h kernel header 2021-03-15 16:41:22 +08:00
remote multi-process: Avoid logical AND of mutually exclusive tests 2021-05-13 18:15:32 +02:00
riscv hw/riscv: Fix OT IBEX reset vector 2021-05-11 20:02:07 +10:00
rtc hw/rtc/mc146818rtc: Convert to 3-phase reset (Resettable interface) 2021-05-13 18:05:22 +02:00
rx hw/rx/rx-gdbsim: Do not accept invalid memory size 2021-05-03 10:07:41 +02:00
s390x Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
scsi pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
sd Drop the deprecated lm32 target 2021-05-12 18:20:25 +02:00
sh4 Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
smbios hw/smbios: support for type 41 (onboard devices extended information) 2021-05-14 10:26:18 -04:00
sparc qemu-sparc queue 2021-05-10 12:34:05 +01:00
sparc64 qemu-sparc queue 2021-05-10 12:34:05 +01:00
ssi Trivial patches pull request 20210503 2021-05-05 13:52:00 +01:00
timer Pull request trivial-branch 20210515 2021-05-17 16:44:47 +01:00
tpm Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
tricore Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
usb Drop the deprecated lm32 target 2021-05-12 18:20:25 +02:00
vfio Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
virtio vhost-user-blk: Check that num-queues is supported by backend 2021-05-18 12:57:39 +02:00
watchdog clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
xen Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
xenpv meson: convert hw/arch* 2020-08-21 06:30:33 -04:00
xtensa Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
Kconfig Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00
meson.build Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00