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Kevin Wolf 520d8b40e8 block/export: Fix vhost-user-blk shutdown with requests in flight 
The vhost-user-blk export runs requests asynchronously in their own
coroutine. When the vhost connection goes away and we want to stop the
vhost-user server, we need to wait for these coroutines to stop before
we can unmap the shared memory. Otherwise, they would still access the
unmapped memory and crash.

This introduces a refcount to VuServer which is increased when spawning
a new request coroutine and decreased before the coroutine exits. The
memory is only unmapped when the refcount reaches zero.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20220125151435.48792-1-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2022-02-01 13:49:15 +01:00
..
accel.h
accel-cpu: make cpu_realizefn return a bool
2021-05-10 15:41:50 -04:00
atomic128.h
docs: fix references to docs/devel/atomics.rst
2021-06-02 06:51:09 +02:00
atomic.h
qemu/atomic: Add aligned_{int64,uint64}_t types
2021-07-21 07:45:38 -10:00
base64.h
nomaintainer: Fix Lesser GPL version number
2020-11-15 17:04:40 +01:00
bcd.h
Clean up decorations and whitespace around header guards
2016-07-12 16:20:46 +02:00
bitmap.h
bitmap: Add bitmap_copy_with_{src|dst}_offset()
2019-07-15 15:39:02 +02:00
bitops.h
bitops.h: revert db1ffc32dd ("qemu/bitops.h: add bitrev8 implementation")
2021-07-26 06:56:41 -10:00
bswap.h
include/qemu/bswap.h: Handle being included outside extern "C" block
2021-05-10 17:21:54 +01:00
buffer.h
nomaintainer: Fix Lesser GPL version number
2020-11-15 17:04:40 +01:00
cacheflush.h
util: Enhance flush_icache_range with separate data pointer
2021-01-07 05:09:41 -10:00
co-shared-resource.h
co-shared-resource: protect with a mutex
2021-06-25 14:24:24 +03:00
compiler.h
configure: Remove probe for _Static_assert
2021-06-16 15:03:26 +02:00
config-file.h
qemu-config: parse configuration files to a QDict
2021-06-04 13:50:01 +02:00
coroutine_int.h
coroutine: support SafeStack in ucontext backend
2020-06-23 15:46:05 +01:00
coroutine.h
co-queue: drop extra coroutine_fn marks
2021-06-18 10:59:52 -05:00
cpuid.h
util: add util function buffer_zero_avx512()
2020-03-16 23:02:21 +01:00
crc32c.h
Include qemu-common.h exactly where needed
2019-06-12 13:20:20 +02:00
crc-ccitt.h
util: Add CRC16 (CCITT) calculation routines
2021-01-24 20:10:54 +01:00
ctype.h
qemu-common: Move qemu_isalnum() etc. to qemu/ctype.h
2019-06-11 20:22:09 +02:00
cutils.h
ui/dbus: add p2p=on/off option
2021-12-21 10:50:22 +04:00
datadir.h
vl: extract softmmu/datadir.c
2020-12-10 12:15:18 -05:00
dbus.h
ui/dbus: add chardev backend & interface
2021-12-21 10:50:22 +04:00
drm.h
Clean up ill-advised or unusual header guards
2019-05-13 08:58:55 +02:00
envlist.h
misc: move include files to include/qemu/
2012-12-19 08:32:39 +01:00
error-report.h
error: rename error_with_timestamp to message_with_timestamp
2021-02-01 10:50:55 +00:00
event_notifier.h
event_notifier: handle initialization failure better
2021-02-08 14:43:55 +01:00
fifo8.h
utils/fifo8: add VMSTATE_FIFO8_TEST macro
2021-02-07 20:38:34 +00:00
fifo32.h
hw: Clean up includes
2016-06-07 18:19:23 +03:00
filemonitor.h
nomaintainer: Fix Lesser GPL version number
2020-11-15 17:04:40 +01:00
futex.h
futex: add missing header guards
2017-10-16 20:57:13 +03:00
guest-random.h
util: Add qemu_guest_getrandom and associated routines
2019-05-22 12:38:54 -04:00
hbitmap.h
block/dirty-bitmap: improve _next_dirty_area API
2020-03-18 14:03:46 -04:00
help_option.h
keyval: Parse help options
2020-10-15 16:06:27 +02:00
host-utils.h
host-utils: Introduce mulu128
2021-11-09 10:32:52 +11:00
id.h
net: Use id_generate() in the network subsystem, too
2021-03-09 21:47:45 +01:00
int128.h
qemu/int128: addition of div/rem 128-bit operations
2022-01-08 15:46:10 +10:00
iov.h
util/iov: make qemu_iovec_init_extended() honest
2021-02-03 08:00:33 -06:00
iova-tree.h
util: Make some iova_tree parameters const
2021-11-02 15:57:21 +01:00
jhash.h
Clean up ill-advised or unusual header guards
2019-05-13 08:58:55 +02:00
job.h
job: Add job_cancel_requested()
2021-10-07 10:42:40 +02:00
lockable.h
include/qemu/lockable: Use _Generic instead of QEMU_GENERIC
2021-06-16 15:03:26 +02:00
log-for-trace.h
log-for-trace.h: Split out parts of log.h used by trace.h
2018-03-12 11:10:20 +00:00
log.h
qemu/atomic.h: rename atomic_ to qatomic_
2020-09-23 16:07:44 +01:00
main-loop.h
util/async: add a human-readable name to BHs for debugging
2021-07-05 11:40:32 +01:00
memfd.h
linux-user: add memfd_create
2019-09-11 08:46:17 +02:00
mmap-alloc.h
util/mmap-alloc: Pass flags instead of separate bools to qemu_ram_mmap()
2021-06-15 20:27:38 +02:00
module.h
docs: remove non-reference uses of single backticks
2021-11-08 12:27:23 +04:00
notify.h
xen / notify: introduce a new XenWatchList abstraction
2019-09-24 12:18:47 +01:00
nvdimm-utils.h
Clean up includes
2020-12-10 17:16:44 +01:00
option_int.h
qemu/queue.h: simplify reverse access to QTAILQ
2019-01-11 15:46:55 +01:00
option.h
option: add g_auto for QemuOpts
2021-12-21 10:50:22 +04:00
osdep.h
util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc()
2022-01-07 05:19:55 -05:00
path.h
Clean up decorations and whitespace around header guards
2016-07-12 16:20:46 +02:00
plugin-memory.h
plugins: fix-up handling of internal hostaddr for 32 bit
2021-07-14 14:33:53 +01:00
plugin.h
plugins: try and make plugin_insn_append more ergonomic
2021-11-04 10:32:01 +00:00
pmem.h
Clean up decorations and whitespace around header guards
2019-05-13 08:58:55 +02:00
processor.h
Drop remaining bits of ia64 host support
2018-02-05 18:09:45 +01:00
progress_meter.h
progressmeter: protect with a mutex
2021-06-25 14:24:24 +03:00
qdist.h
Include qemu-common.h exactly where needed
2019-06-12 13:20:20 +02:00
qemu-options.h
remove qemu-options* from root directory
2021-05-26 14:49:46 +02:00
qemu-plugin.h
plugins/api: added a boolean parsing plugin api
2021-09-02 11:29:34 +01:00
qemu-print.h
qemu-print: New qemu_fprintf(), qemu_vfprintf()
2019-04-18 22:18:59 +02:00
qht.h
qht: constify qht_statistics_init
2018-09-26 08:55:54 -07:00
qsp.h
qsp: Simplify how qsp_report() prints
2019-04-18 22:18:59 +02:00
queue.h
qemu/atomic.h: rename atomic_ to qatomic_
2020-09-23 16:07:44 +01:00
range.h
Include qemu/queue.h slightly less
2019-08-16 13:31:52 +02:00
ratelimit.h
ratelimit: treat zero speed as unlimited
2021-06-25 14:22:21 +03:00
rcu_queue.h
qemu/atomic.h: rename atomic_ to qatomic_
2020-09-23 16:07:44 +01:00
rcu.h
rcu: Introduce force_rcu notifier
2021-11-10 13:20:15 +01:00
readline.h
readline: add a free function
2018-01-16 14:54:50 +01:00
selfmap.h
Remove leading underscores from QEMU defines
2021-06-21 05:49:01 +02:00
seqlock.h
qemu/atomic.h: rename atomic_ to qatomic_
2020-09-23 16:07:44 +01:00
sockets.h
qemu-sockets: introduce socket_address_parse_named_fd()
2021-06-18 10:59:53 -05:00
stats64.h
qemu/atomic: Add aligned_{int64,uint64}_t types
2021-07-21 07:45:38 -10:00
sys_membarrier.h
Normalize header guard symbol definition.
2019-05-13 08:58:55 +02:00
systemd.h
Normalize header guard symbol definition.
2019-05-13 08:58:55 +02:00
thread-posix.h
util: Use unique type for QemuRecMutex in thread-posix.h
2021-06-16 15:03:26 +02:00
thread-win32.h
util: Use real functions for thread-posix QemuRecMutex
2021-06-16 15:03:26 +02:00
thread.h
util: Pass file+line to qemu_rec_mutex_unlock_impl
2021-06-16 15:03:26 +02:00
throttle-options.h
block: add throttle block filter driver
2017-09-06 10:12:02 +02:00
throttle.h
Include qemu-common.h exactly where needed
2019-06-12 13:20:20 +02:00
timed-average.h
include: Clean up includes
2016-02-23 12:43:05 +00:00
timer.h
spapr: rollback 'unplug timeout' for CPU hotunplugs
2021-04-12 12:27:14 +10:00
transactions.h
transactions: Invoke clean() after everything else
2021-11-16 09:43:44 +01:00
tsan.h
include/qemu: Added tsan.h for annotations.
2020-06-16 14:49:05 +01:00
typedefs.h
exec: Move TranslationBlock typedef to qemu/typedefs.h
2021-02-18 08:19:08 +00:00
unicode.h
json: Reject invalid UTF-8 sequences
2018-08-24 20:26:37 +02:00
units.h
block: Eliminate the S_1KiB, S_2KiB, ... macros
2019-02-01 13:46:45 +01:00
uri.h
Remove unused function declarations
2016-09-15 15:32:22 +03:00
userfaultfd.h
migration: introduce UFFD-WP low-level interface helpers
2021-02-08 11:19:51 +00:00
uuid.h
acpi: nvdimm: change NVDIMM_UUID_LE to a common macro
2020-05-14 15:03:08 +01:00
vfio-helpers.h
util/vfio-helpers: Pass Error handle to qemu_vfio_dma_map()
2021-09-07 09:08:24 +01:00
vhost-user-server.h
block/export: Fix vhost-user-blk shutdown with requests in flight
2022-02-01 13:49:15 +01:00
win_dump_defs.h
dump: move Windows dump structures definitions
2018-10-02 19:09:12 +02:00
xattr.h
include: Fix typos found by codespell
2017-01-24 23:26:52 +03:00
xxhash.h
target/arm: Implement an IMPDEF pauth algorithm
2021-01-19 14:38:51 +00:00
yank.h
yank: Remove dependency on qiochannel
2021-04-01 15:27:44 +04:00