Sergio Lopez 3bcf0fb3f2 event_notifier: add event_notifier_get_wfd() ... event_notifier_get_fd(const EventNotifier *e) always returns EventNotifier's read file descriptor (rfd). This is not a problem when the EventNotifier is backed by a an eventfd, as a single file descriptor is used both for reading and triggering events (rfd == wfd). But, when EventNotifier is backed by a pipe pair, we have two file descriptors, one that can only be used for reads (rfd), and the other only for writes (wfd). There's, at least, one known situation in which we need to obtain wfd instead of rfd, which is when setting up the file that's going to be sent to the peer in vhost's SET_VRING_CALL. Add a new event_notifier_get_wfd(const EventNotifier *e) that can be used to obtain wfd where needed. Signed-off-by: Sergio Lopez <slp@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20220304100854.14829-2-slp@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2022-03-06 06:19:47 -05:00
..
aio-posix.c	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
aio-posix.h	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
aio-wait.c
aio-win32.c	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
aiocb.c
async.c	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
atomic64.c	include: Move qemu_[id]cache_* declarations to new qemu/cacheinfo.h	2022-02-21 13:30:20 +00:00
base64.c
bitmap.c
bitops.c
block-helpers.c
block-helpers.h
buffer.c
bufferiszero.c	cpuid: use unsigned for max cpuid	2022-02-04 09:07:43 -05:00
cacheflush.c	include: Move qemu_[id]cache_* declarations to new qemu/cacheinfo.h	2022-02-21 13:30:20 +00:00
cacheinfo.c	include: Move qemu_[id]cache_* declarations to new qemu/cacheinfo.h	2022-02-21 13:30:20 +00:00
compatfd.c	util/compatfd.c: use libc signalfd wrapper instead of raw syscall	2021-10-13 10:47:49 +02:00
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
crc-ccitt.c
cutils.c
dbus.c
drm.c
envlist.c
error.c
event_notifier-posix.c	event_notifier: add event_notifier_get_wfd()	2022-03-06 06:19:47 -05:00
event_notifier-win32.c
fdmon-epoll.c
fdmon-io_uring.c
fdmon-poll.c
fifo8.c
filemonitor-inotify.c
filemonitor-stub.c
getauxval.c
guest-random.c	util/guest-random: Fix size arg to tail memcpy	2021-07-09 18:42:46 +02:00
hbitmap.c
hexdump.c
host-utils.c	host-utils: add 128-bit quotient support to divu128/divs128	2021-10-27 17:10:00 -07:00
id.c
int128.c	qemu/int128: addition of div/rem 128-bit operations	2022-01-08 15:46:10 +10:00
iov.c
iova-tree.c	util: Make some iova_tree parameters const	2021-11-02 15:57:21 +01:00
keyval.c	keyval: Fix grammar comment to cover downstream prefix	2022-02-28 11:39:35 +01:00
lockcnt.c
log.c
main-loop.c	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
memfd.c
meson.build	configure, meson: move membarrier test to meson	2022-02-16 15:01:33 +01:00
mmap-alloc.c	Deprecate pmem=on with non-DAX capable backend file	2021-07-06 18:05:16 -04:00
module.c	modules: check arch on qom lookup	2021-07-09 18:20:27 +02:00
notify.c
nvdimm-utils.c
osdep.c	include: Move hardware version declarations to new qemu/hw-version.h	2022-02-21 13:30:20 +00:00
oslib-posix.c	include: Move qemu_madvise() and related #defines to new qemu/madvise.h	2022-02-21 13:30:20 +00:00
oslib-win32.c	util/oslib-win32: Fix fatal assertion in qemu_try_memalign	2021-06-19 14:51:51 -07:00
pagesize.c
path.c
qdist.c
qemu-co-shared-resource.c	co-shared-resource: protect with a mutex	2021-06-25 14:24:24 +03:00
qemu-config.c	qemu-config: restore "machine" in qmp_query_command_line_options()	2021-07-22 14:44:47 +02:00
qemu-coroutine-io.c	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
qemu-coroutine-lock.c
qemu-coroutine-sleep.c	coroutine-sleep: introduce qemu_co_sleep	2021-05-21 18:22:33 +01:00
qemu-coroutine.c	util: adjust coroutine pool size to virtio block queue	2022-02-14 17:11:25 +00:00
qemu-error.c
qemu-openpty.c	util: Remove redundant checks in the openpty()	2021-09-15 14:42:48 +02:00
qemu-option.c	qemu-option: Allow deleting opts during qemu_opts_foreach()	2021-10-15 16:11:22 +02:00
qemu-print.c
qemu-progress.c
qemu-sockets.c	build-sys: add HAVE_IPPROTO_MPTCP	2021-09-30 15:30:25 +02:00
qemu-thread-common.h
qemu-thread-posix.c	configure, meson: move pthread_setname_np checks to Meson	2021-10-14 09:50:57 +02:00
qemu-thread-win32.c	util: Pass file+line to qemu_rec_mutex_unlock_impl	2021-06-16 15:03:26 +02:00
qemu-timer-common.c
qemu-timer.c
qht.c
qsp.c	qemu/atomic: Add aligned_{int64,uint64}_t types	2021-07-21 07:45:38 -10:00
range.c
rcu.c	rcu: Introduce force_rcu notifier	2021-11-10 13:20:15 +01:00
readline.c
selfmap.c	util/selfmap: Discard mapping on error	2021-07-26 07:06:49 -10:00
stats64.c
sys_membarrier.c
systemd.c
thread-pool.c
throttle.c
timed-average.c
trace-events	modules: add tracepoints	2021-07-09 18:20:27 +02:00
trace.h
transactions.c	transactions: Invoke clean() after everything else	2021-11-16 09:43:44 +01:00
unicode.c
uri.c	util/uri: do not check argument of uri_free()	2021-07-09 12:26:05 +02:00
userfaultfd.c
uuid.c
vfio-helpers.c	util/vfio-helpers: Let qemu_vfio_do_mapping() propagate Error	2021-09-07 09:08:24 +01:00
vhost-user-server.c	block/export: Fix vhost-user-blk shutdown with requests in flight	2022-02-01 13:49:15 +01:00
yank.c