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qemu-cr16/include/hw
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Stefan Hajnoczi b348ca2e04 virtio-scsi: introduce event and ctrl virtqueue locks 
Virtqueues are not thread-safe. Until now this was not a major issue
since all virtqueue processing happened in the same thread. The ctrl
queue's Task Management Function (TMF) requests sometimes need the main
loop, so a BH was used to schedule the virtqueue completion back in the
thread that has virtqueue access.

When IOThread Virtqueue Mapping is introduced in later commits, event
and ctrl virtqueue accesses from other threads will become necessary.
Introduce an optional per-virtqueue lock so the event and ctrl
virtqueues can be protected in the commits that follow.

The addition of the ctrl virtqueue lock makes
virtio_scsi_complete_req_from_main_loop() and its BH unnecessary.
Instead, take the ctrl virtqueue lock from the main loop thread.

The cmd virtqueue does not have a lock because the entirety of SCSI
command processing happens in one thread. Only one thread accesses the
cmd virtqueue and a lock is unnecessary.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20250311132616.1049687-6-stefanha@redhat.com>
Tested-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2025-03-13 17:57:23 +01:00
..
acpi hw/acpi/ghes: Make ghes_record_cper_errors() static 2025-03-04 14:45:34 +01:00
adc hw/adc: Remove MAX111X device 2024-10-15 15:16:17 +01:00
arm hw/arm/aspeed_ast27x0: Support two levels of INTC controllers for AST2700 A1 2025-03-09 14:36:53 +01:00
audio virtio-snd: rewrite invalid tx/rx message handling 2024-04-09 02:31:16 -04:00
block hw/block: Remove ecc 2024-10-15 15:16:17 +01:00
char hw/char/imx_serial: Fix reset value of UFCR register 2025-01-27 13:50:14 +00:00
core cpus: Remove CPUClass::has_work() handler 2025-03-09 17:00:47 +01:00
cpu
cxl hw/cxl: Introduce CXL_T3_MSIX_VECTOR enumeration 2025-02-21 07:18:42 -05:00
display hw/display: Remove Blizzard display device 2024-10-01 14:40:29 +01:00
dma include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
firmware hw/smbios: Remove 'uuid_encoded' argument from smbios_set_defaults() 2024-06-19 12:40:49 +02:00
fsi hw/fsi: Aspeed APB2OPB & On-chip peripheral bus 2024-02-01 08:33:18 +01:00
gpio hw/gpio/aspeed: Support different memory region ops 2024-10-24 07:57:47 +02:00
hyperv include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
i2c hw/i2c/aspeed: Add support for Tx/Rx buffer 64 bit addresses 2024-09-16 17:44:08 +02:00
i386 hw/i386/pc: Remove unused pc_compat_2_3 declarations 2025-01-30 13:01:22 +03:00
ide include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
input hw/input: Remove lm832x device 2024-10-01 14:41:10 +01:00
intc hw/intc/aspeed: Add Support for AST2700 INTCIO Controller 2025-03-09 14:36:53 +01:00
ipack hw/ipack: Remove legacy qemu_allocate_irqs() use 2025-01-31 19:36:44 +01:00
ipmi
isa include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
loongarch hw/loongarch/virt: Update the ACPI table for hotplug cpu 2025-03-05 09:39:18 +08:00
m68k m68k: Clean up includes 2024-01-30 21:20:20 +03:00
mem hw/mem/memory-device: Remove legacy_align from memory_device_pre_plug() 2024-06-19 12:40:49 +02:00
mips hw/mips/cps: Set the vCPU 'cpu-big-endian' property 2024-10-15 12:21:06 -03:00
misc hw/misc/aspeed_scu: Add Support for AST2700/AST2750 A1 Silicon Revisions 2025-03-09 14:36:53 +01:00
net hw/net: Add NPCM8XX PCS Module 2025-02-20 15:22:22 +00:00
nubus hw/nubus: add nubus-virtio-mmio device 2024-02-27 09:36:39 +01:00
nvram include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
openrisc hw/openrisc: Support monitor dumpdtb command 2025-02-24 15:03:42 +00:00
pci xen/passthrough: use gsi to map pirq when dom0 is PVH 2025-03-10 13:25:14 +01:00
pci-bridge hw/pci-bridge/cxl-upstream: Add properties to control link speed and width 2024-11-04 16:03:24 -05:00
pci-host hw/arm/fsl-imx8mp: Add PCIe support 2025-02-25 17:02:34 +00:00
ppc include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
remote remote: Remove unused remote_iohub_finalize 2024-10-03 17:26:06 +03:00
riscv target/riscv: Handle Smrnmi interrupt and exception 2025-01-19 09:44:34 +10:00
rtc hw/i386: move rtc-reset-reinjection command out of hw/rtc 2024-05-10 15:45:15 +02:00
rx hw/rx/rx62n: Only call qdev_get_gpio_in() when necessary 2024-02-15 16:58:46 +01:00
s390x s390x/pci: indicate QEMU supports relaxed translation for passthrough 2025-03-07 09:24:00 +01:00
scsi scsi: introduce requests_lock 2025-03-13 17:57:23 +01:00
sd hw/sd: Remove unused legacy functions, stop killing mammoths 2025-01-31 19:36:44 +01:00
sensor
sh4 hw/sh4: Remove sh7750_register_io_device() helper 2024-09-13 20:10:49 +02:00
southbridge hw/acpi/ich9: Add periodic and swsmi timer 2024-09-11 09:46:14 -04:00
sparc hw/sparc/grlib: split out the headers for each peripherals 2024-02-15 16:58:46 +01:00
ssi hw/ssi: Make flash size a property in NPCM7XX FIU 2025-02-20 14:20:29 +00:00
timer hw/arm/fsl-imx8mp: Implement general purpose timers 2025-02-25 17:03:46 +00:00
tricore include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
uefi hw/uefi: add include/hw/uefi/var-service.h 2025-03-04 12:01:42 +01:00
usb hw/usb/hcd-dwc3: Align global registers size with Linux 2025-02-25 15:32:58 +00:00
vfio vfio/migration: Add x-migration-multifd-transfer VFIO property 2025-03-06 06:47:34 +01:00
virtio virtio-scsi: introduce event and ctrl virtqueue locks 2025-03-13 17:57:23 +01:00
vmapple hw/vmapple/virtio-blk: Add support for apple virtio-blk 2025-03-04 14:45:34 +01:00
watchdog aspeed/wdt: Add AST2700 support 2024-06-16 21:08:54 +02:00
xen hw/xen/xen-legacy-backend: Remove unused 'net/net.h' header 2025-03-04 14:45:34 +01:00
xtensa
boards.h i386/cpu: add has_caches flag to check smp_cache configuration 2025-02-25 16:18:12 +01:00
clock.h clock: clear callback on unparent 2024-12-10 18:49:24 +01:00
elf_ops.h.inc hw/elf_ops: Rename elf_ops.h -> elf_ops.h.inc 2024-04-25 12:48:12 +02:00
fw-path-provider.h
hotplug.h
hw.h
irq.h hw/irq: Introduce qemu_init_irqs() helper 2025-01-31 19:36:44 +01:00
loader-fit.h hw/mips/boston: Support dumpdtb monitor commands 2025-02-24 15:03:42 +00:00
loader.h hw/loader: Pass ELFDATA endian order argument to load_elf() 2025-01-31 19:36:44 +01:00
nmi.h
or-irq.h
platform-bus.h
ptimer.h
qdev-clock.h
qdev-core.h hw/qdev: Factor qdev_hotunplug_allowed() out 2025-01-13 17:16:03 +01:00
qdev-dma.h
qdev-properties-system.h hw/vmapple/virtio-blk: Add support for apple virtio-blk 2025-03-04 14:45:34 +01:00
qdev-properties.h qdev: Rename PropertyInfo member @name to @type 2025-03-06 10:30:58 +01:00
register.h
registerfields.h
resettable.h reset: Add RESET_TYPE_WAKEUP 2024-09-24 11:33:35 +02:00
stream.h
sysbus.h hw/sysbus: Introduce TYPE_DYNAMIC_SYS_BUS_DEVICE 2025-02-16 14:25:07 +01:00
usb.h hw/usb: Inline usb_new() 2025-01-13 17:07:00 +01:00
vmstate-if.h