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8caf907f07
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Cornelia Huck 8caf907f07 dataplane: Fix startup race. 
Avoid trying to setup dataplane again if dataplane setup is already in
progress. This may happen if an eventfd is triggered during setup.

I saw this occasionally with an experimental s390 irqfd implementation:

virtio_blk_handle_output
-> virtio_blk_data_plane_start
-> virtio_ccw_set_host_notifier
...
-> virtio_queue_set_host_notifier_fd_handler
-> virtio_queue_host_notifier_read
-> virtio_queue_notify_vq
-> virtio_blk_handle_output
-> virtio_blk_data_plane_start
-> vring_setup
-> hostmem_init
-> memory_listener_register
-> BOOM

As virtio-ccw tries to follow what virtio-pci does, it might be triggerable
for other platforms as well.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-09-06 15:25:09 +02:00
audio aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
backends aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
block raw-posix: report unwritten extents as zero 2013-09-06 15:25:09 +02:00
bsd-user gdbstub: Change gdb_handlesig() argument to CPUState 2013-07-23 02:41:33 +02:00
default-configs default-configs: Fix A9MP and A15MP config names 2013-08-20 14:54:32 +01:00
disas disas/ppc.c: Fix little endian disassembly 2013-09-02 10:06:41 +02:00
docs qcow2: Add corrupt bit 2013-08-30 15:48:43 +02:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu softfloat: Fix shift128Right for shift counts 64..127 2013-06-10 11:36:12 -05:00
fsdev fsdev: Fix potential memory leak 2013-07-09 13:38:56 -05:00
gdb-xml
hw dataplane: Fix startup race. 2013-09-06 15:25:09 +02:00
include block: define get_block_status return value 2013-09-06 15:25:09 +02:00
libcacard misc: Fix some typos in names and comments 2013-09-01 18:59:24 +04:00
linux-headers misc: Fix some typos in names and comments 2013-09-01 18:59:24 +04:00
linux-user cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
net aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
pc-bios Update OpenBIOS images 2013-07-30 23:11:07 +01:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po po: Update all *.po files 2013-08-07 12:48:00 -05:00
qapi OptsVisitor: don't try to flatten overlong integer ranges 2013-08-20 11:52:00 -04:00
qga qga: escape cmdline args when registering win32 service (CVE-2013-2231) 2013-07-25 14:49:04 -05:00
QMP qmp: Documentation for BLOCK_IMAGE_CORRUPTED 2013-09-06 15:25:08 +02:00
qobject Implement qdict_flatten() 2013-07-26 22:01:31 +02:00
qom QOM CPUState refactorings / X86CPU 2013-09-03 12:33:32 -05:00
roms Update OpenBIOS images 2013-07-30 23:11:07 +01:00
scripts qapi-types.py: Split off generate_struct_fields() 2013-08-30 15:28:52 +02:00
slirp slirp/arp_table.c: Avoid shifting into sign bit of signed integers 2013-09-01 19:09:09 +04:00
stubs aio / timers: Rearrange timer.h & make legacy functions call non-legacy 2013-08-22 19:14:24 +02:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-arm Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-09-03 12:31:44 -05:00
target-cris tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-i386 target-i386: Use #defines instead of magic numbers for CPUID cache info 2013-09-03 12:25:56 +02:00
target-lm32 target: Include softmmu_exec.h where forgotten 2013-09-02 09:08:30 -07:00
target-m68k tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-microblaze tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-mips cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
target-moxie target: Include softmmu_exec.h where forgotten 2013-09-02 09:08:30 -07:00
target-openrisc tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-ppc cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
target-s390x cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
target-sh4 tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-sparc tcg: Change tcg_gen_exit_tb argument to uintptr_t 2013-09-02 09:08:30 -07:00
target-unicore32 target: Include softmmu_exec.h where forgotten 2013-09-02 09:08:30 -07:00
target-xtensa target: Include softmmu_exec.h where forgotten 2013-09-02 09:08:30 -07:00
tcg Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-09-03 12:31:44 -05:00
tests aio / timers: fix build of test/test-aio.c on non-linux platforms 2013-09-06 15:25:08 +02:00
trace trace: Add ftrace tracing backend 2013-05-03 13:58:09 +02:00
ui gtk: Remove unused include statements which are not portable 2013-08-27 14:21:16 +02:00
util throttle: Add a new throttling API implementing continuous leaky bucket. 2013-09-06 15:25:07 +02:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore OptsVisitor: introduce unit tests, with test cases for range flattening 2013-08-20 11:52:00 -04:00
.gitmodules pc-bios: Update palcode-clipper 2013-07-18 08:17:42 -07:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
aio-posix.c aio / timers: Convert aio_poll to use AioContext timers' deadline 2013-08-22 19:10:28 +02:00
aio-win32.c aio-win32: replace incorrect AioHandler->opaque usage with ->e 2013-08-22 22:04:54 +02:00
arch_init.c cpu: Replace qemu_for_each_cpu() 2013-09-03 12:25:55 +02:00
async.c aio / timers: aio_ctx_prepare sets timeout from AioContext timers 2013-08-22 19:10:28 +02:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c migration: omit drive ref as we have bdrv_ref now 2013-09-06 15:25:08 +02:00
block.c block: look for zero blocks in bs->file 2013-09-06 15:25:09 +02:00
blockdev-nbd.c nbd: use BlockDriverState refcnt 2013-09-06 15:25:08 +02:00
blockdev.c block: use BDS ref for block jobs 2013-09-06 15:25:08 +02:00
blockjob.c block: use BDS ref for block jobs 2013-09-06 15:25:08 +02:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog fix some common typos 2012-05-14 07:27:24 +02:00
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
configure Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-09-03 12:31:44 -05:00
COPYING
COPYING.LIB
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c tcg: Fix next_tb type in cpu_exec 2013-09-02 09:08:29 -07:00
cpus.c cpu: Replace qemu_for_each_cpu() 2013-09-03 12:25:55 +02:00
cputlb.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
device_tree.c device_tree: Add qemu_devtree_setprop_sized_cells() utility functions 2013-07-19 12:58:46 +01:00
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
disas.c disas: Implement fallback to dump object code as hex 2013-08-24 07:26:45 +02:00
dma-helpers.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
dump.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
exec.c exec: do tcg_commit only when tcg_enabled 2013-09-05 18:11:52 +02:00
gdbstub.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx Merge remote-tracking branch 'luiz/queue/qmp' into staging 2013-08-30 12:26:04 -05:00
hmp.c block: Add iops_size to do the iops accounting for a given io size. 2013-09-06 15:25:07 +02:00
hmp.h block: add drive_backup HMP command 2013-07-15 09:49:00 +02:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c memory: Provide separate handling of unassigned io ports accesses 2013-09-05 18:11:43 +02:00
kvm-all.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
kvm-stub.c Merge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5 2013-08-29 17:21:51 -05:00
LICENSE LICENSE: clarify 2013-08-12 09:15:12 -05:00
main-loop.c aio / timers: Rearrange timer.h & make legacy functions call non-legacy 2013-08-22 19:14:24 +02:00
MAINTAINERS MAINTAINERS: Take over 0.15 maintenance 2013-08-22 17:27:43 +02:00
Makefile w32: Fix broken out-of-tree builds (missing version.o) 2013-08-27 14:21:16 +02:00
Makefile.objs w32: Add missing version.o to all executables (fix regression) 2013-08-12 09:19:05 -05:00
Makefile.target build: do not use TARGET_ARCH 2013-06-14 15:33:10 +01:00
memory_mapping.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
memory.c Revert "memory: Return -1 again on reads from unsigned regions" 2013-09-05 18:11:48 +02:00
migration-exec.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-fd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-rdma.c rdma: silly ipv6 bugfix 2013-09-01 19:03:43 +04:00
migration-tcp.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-unix.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
monitor.c QOM CPUState refactorings / X86CPU 2013-09-03 12:33:32 -05:00
nbd.c nbd: use BlockDriverState refcnt 2013-09-06 15:25:08 +02:00
os-posix.c Add option to mlock qemu and guest memory 2013-04-22 08:52:23 -05:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c remove some double-includes 2013-05-18 16:35:12 +04:00
qapi-schema.json docs, qapi: document qemu-img map 2013-09-06 15:25:09 +02:00
qdev-monitor.c qemu-help: Sort devices by logical functionality 2013-07-29 10:37:09 -05:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c Merge remote-tracking branch 'stefanha/block' into staging 2013-08-26 09:19:50 -05:00
qemu-coroutine-io.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-coroutine-lock.c block: Repair the throttling code. 2013-07-29 17:07:37 +02:00
qemu-coroutine-sleep.c aio / timers: convert block_job_sleep_ns and co_sleep_ns to new API 2013-08-22 19:14:24 +02:00
qemu-coroutine.c coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
qemu-doc.texi doc: we use seabios, not bochs bios 2013-06-28 22:10:34 +04:00
qemu-img-cmds.hx qemu-img: add a "map" subcommand 2013-09-06 15:25:09 +02:00
qemu-img.c qemu-img: add a "map" subcommand 2013-09-06 15:25:09 +02:00
qemu-img.texi docs, qapi: document qemu-img map 2013-09-06 15:25:09 +02:00
qemu-io-cmds.c block: expect errors from bdrv_co_is_allocated 2013-09-06 15:25:09 +02:00
qemu-io.c block: make bdrv_delete() static 2013-09-06 15:25:08 +02:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-nbd.texi Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h
qemu-options.hx block: Add iops_size to do the iops accounting for a given io size. 2013-09-06 15:25:07 +02:00
qemu-seccomp.c seccomp: add arch_prctl() to the syscall whitelist 2013-07-29 19:56:52 -05:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c aio / timers: Remove legacy interface 2013-08-22 19:14:24 +02:00
qemu.nsi w32, w64: Add build rule for installer 2013-07-29 11:43:37 +02:00
qemu.sasl Fix command example in qemu.sasl 2013-07-19 12:52:03 +04:00
qmp-commands.hx block: Add iops_size to do the iops accounting for a given io size. 2013-09-06 15:25:07 +02:00
qmp.c QMP: Add cpu-add command 2013-05-01 13:06:07 +02:00
qtest.c qtest: Fix FMT_timeval vs time_t 2013-09-02 09:08:29 -07:00
readline.c monitor: avoid use of global *cur_mon in readline_completion() 2013-08-30 07:41:14 -04:00
README
rules.mak win32: fix compilation again 2013-05-03 12:04:40 -05:00
savevm.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
spice-qemu-char.c qemu-char: don't issue CHR_EVENT_OPEN in a BH 2013-06-10 11:38:37 -05:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c tcg: Change tcg_qemu_tb_exec return to uintptr_t 2013-09-02 09:08:29 -07:00
thread-pool.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
tpm.c tpm.c: Don't try to put -1 in a variable of type TpmModel 2013-07-29 10:37:10 -05:00
trace-events Merge remote-tracking branch 'kraxel/usb.88' into staging 2013-09-03 12:31:30 -05:00
translate-all.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c linux-user: fix segmentation fault passing with h2g(x) != x 2013-07-23 17:28:28 +03:00
VERSION Open up 1.7 development branch 2013-08-15 15:41:13 -05:00
version.rc w32: Add an icon resource 2013-08-27 14:21:16 +02:00
vl.c pc,pci,virtio fixes and cleanups 2013-09-03 12:31:07 -05:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c Allow use of pc machine type (accel=xen) for Xen HVM domains. 2013-06-25 12:00:48 +00:00

README 

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

- QEMU team