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Fam Zheng e819ab2277 block: Introduce "null" drivers 
This is an analogue to Linux null_blk. It can be used for testing or
benchmarking block device emulation and general block layer
functionalities such as coroutines and throttling, where disk IO is not
necessary or wanted.

Use null-aio:// for AIO version, and null-co:// for coroutine version.

[Resolved conflict with Fam's async bdrv_aio_cancel() series:
1. Drop .bdrv_aio_cancel() since it is now done by block.c
2. Rename qemu_aio_release() to qemu_aio_unref()
--Stefan]

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1410415798-20673-2-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-22 11:39:23 +01:00
audio
…
backends
pci, pc, virtio, misc bugfixes
2014-09-18 20:02:01 +01:00
block
block: Introduce "null" drivers
2014-09-22 11:39:23 +01:00
bsd-user
…
default-configs
…
disas
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docs
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dtc @ bc895d6d09
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fpu
…
fsdev
…
gdb-xml
…
hw
block: Rename qemu_aio_release -> qemu_aio_unref
2014-09-22 11:39:17 +01:00
include
block: Rename qemu_aio_release -> qemu_aio_unref
2014-09-22 11:39:17 +01:00
libcacard
…
libdecnumber
…
linux-headers
…
linux-user
exec.c: Relax restrictions on watchpoint length and alignment
2014-09-12 14:06:48 +01:00
net
…
pc-bios
…
pixman @ 87eea99e44
pixman: update internal copy to pixman-0.32.6
2014-09-15 08:14:19 +02:00
po
…
qapi
block: Introduce "null" drivers
2014-09-22 11:39:23 +01:00
qga
…
qobject
…
qom
cpu-exec: Make debug_excp_handler a QOM CPU method
2014-09-12 14:06:48 +01:00
roms
…
scripts
…
slirp
…
stubs
…
sysconfigs/target
…
target-alpha
…
target-arm
target-arm: Make *IS TLB maintenance ops affect all CPUs
2014-09-12 14:06:50 +01:00
target-cris
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target-i386
cpu-exec: Make debug_excp_handler a QOM CPU method
2014-09-12 14:06:48 +01:00
target-lm32
cpu-exec: Make debug_excp_handler a QOM CPU method
2014-09-12 14:06:48 +01:00
target-m68k
…
target-microblaze
…
target-mips
…
target-moxie
…
target-openrisc
…
target-ppc
…
target-s390x
…
target-sh4
…
target-sparc
…
target-tricore
…
target-unicore32
…
target-xtensa
cpu-exec: Make debug_excp_handler a QOM CPU method
2014-09-12 14:06:48 +01:00
tcg
…
tests
thread-pool: Convert thread_pool_aiocb_info.cancel to cancel_async
2014-09-22 11:39:02 +01:00
trace
…
ui
vnc-tls: Clean up dead store in vnc_set_x509_credential()
2014-09-18 08:01:53 +02:00
util
util/qemu-sockets.c: Support specifying IPv4 or IPv6 in socket_dgram()
2014-09-16 23:36:32 +01:00
.exrc
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.gitignore
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.gitmodules
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.mailmap
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.travis.yml
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aio-posix.c
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aio-win32.c
aio-win32: avoid out-of-bounds access to the events array
2014-09-22 11:39:21 +01:00
arch_init.c
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async.c
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balloon.c
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block-migration.c
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block.c
block: Rename qemu_aio_release -> qemu_aio_unref
2014-09-22 11:39:17 +01:00
blockdev-nbd.c
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blockdev.c
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blockjob.c
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bt-host.c
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bt-vhci.c
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Changelog
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CODING_STYLE
…
configure
Fix cross compilation (nm command)
2014-09-19 17:20:11 +01:00
COPYING
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COPYING.LIB
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coroutine-gthread.c
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coroutine-sigaltstack.c
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coroutine-ucontext.c
…
coroutine-win32.c
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cpu-exec.c
cpu-exec: Make debug_excp_handler a QOM CPU method
2014-09-12 14:06:48 +01:00
cpus.c
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cputlb.c
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device_tree.c
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device-hotplug.c
…
disas.c
…
dma-helpers.c
block: Rename qemu_aio_release -> qemu_aio_unref
2014-09-22 11:39:17 +01:00
dump.c
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exec.c
exec.c: fix setting 1-byte-long watchpoints
2014-09-19 17:42:16 +01:00
gdbstub.c
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HACKING
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hmp-commands.hx
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hmp.c
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hmp.h
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iohandler.c
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ioport.c
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iothread.c
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kvm-all.c
- Memory: improve error reporting and avoid crashes on hotplug
2014-09-12 16:55:49 +01:00
kvm-stub.c
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LICENSE
…
main-loop.c
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MAINTAINERS
…
Makefile
…
Makefile.objs
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Makefile.target
…
memory_mapping.c
…
memory.c
…
migration-exec.c
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migration-fd.c
…
migration-rdma.c
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migration-tcp.c
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migration-unix.c
…
migration.c
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module-common.c
…
monitor.c
monitor: fix debug print compiling error
2014-09-12 11:01:50 -04:00
nbd.c
…
numa.c
…
os-posix.c
…
os-win32.c
…
page_cache.c
…
qapi-schema.json
…
qdev-monitor.c
qdev-monitor: fix segmentation fault on qdev_device_help()
2014-09-22 11:39:18 +01:00
qdict-test-data.txt
…
qemu-bridge-helper.c
…
qemu-char.c
qemu-char: Rename register_char_driver_qapi() to register_char_driver()
2014-09-16 23:36:32 +01:00
qemu-coroutine-io.c
…
qemu-coroutine-lock.c
…
qemu-coroutine-sleep.c
…
qemu-coroutine.c
…
qemu-doc.texi
qcow2: Add falloc and full preallocation option
2014-09-12 15:43:06 +02:00
qemu-file.c
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qemu-img-cmds.hx
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qemu-img.c
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qemu-img.texi
qcow2: Add falloc and full preallocation option
2014-09-12 15:43:06 +02:00
qemu-io-cmds.c
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qemu-io.c
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qemu-log.c
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qemu-nbd.c
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qemu-nbd.texi
…
qemu-options-wrapper.h
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qemu-options.h
…
qemu-options.hx
…
qemu-seccomp.c
…
qemu-tech.texi
…
qemu-timer.c
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qemu.nsi
…
qemu.sasl
…
qmp-commands.hx
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qmp.c
…
qtest.c
…
README
…
rules.mak
Fix cross compilation (nm command)
2014-09-19 17:20:11 +01:00
savevm.c
…
softmmu_template.h
…
spice-qemu-char.c
qemu-char: Rename register_char_driver_qapi() to register_char_driver()
2014-09-16 23:36:32 +01:00
tcg-runtime.c
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tci.c
…
thread-pool.c
block: Rename qemu_aio_release -> qemu_aio_unref
2014-09-22 11:39:17 +01:00
thunk.c
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tpm.c
…
trace-events
…
translate-all.c
…
translate-all.h
…
user-exec.c
…
VERSION
…
version.rc
…
vl.c
pci, pc, virtio, misc bugfixes
2014-09-18 20:02:01 +01:00
vmstate.c
…
xbzrle.c
…
xen-common-stub.c
…
xen-common.c
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xen-hvm-stub.c
…
xen-hvm.c
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xen-mapcache.c
…

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team
Description
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Readme 404 MiB
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