Merge tag 'pull-request-2022-10-28' of https://gitlab.com/thuth/qemu into staging

* Fix and test the VISTR instruction on s390x
* Some more small s390x fixes and maintainer updates
* Make sure to remove all temporary files from qtests
* OpenBSD VM test update to version 7.2
* Add sndio to FreeBSD tests
* More patches to enable the qtests on Windows

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEEJ7iIR+7gJQEY8+q5LtnXdP5wLbUFAmNb1x8RHHRodXRoQHJl
# ZGhhdC5jb20ACgkQLtnXdP5wLbXmcA//TCliiFkhprVxzIqy7zb9uz2Odu+sS4dT
# azUSlXvC14fECm/Rb/rd2VLqCu5x2er8CYauxKQ4VhRImzcDta4kvpt/HKIppN2t
# sqw5tipJL0DYcWBwYL1llvfutM26M+Oh0igwR8uV7b+W1FjojEZdcOr9IZ6E6V55
# wQCE5OHm0VCr61QeI5IBfZTsiPo+DFomUCpj7w66j6i0CVDvmpoe36tCmvGgrcpZ
# SP7ep7/Iq+dnGh2YnJyoUOPlXeeiBCxAygOVnIRXptDeniGoliCFn7ksLdKDQ9qY
# 69pSPR/W7mTZB/HkCRalAbYuYrI9Rcqxdu6c9vcyB8Pr0snQLTf8qThY+BJ2oC4w
# JSGgWVniAk5MmrDazwNRkSbgngYLYf+CcT1h5AANuU5Kt50Bdy9Y3TuL5YVmofEp
# N4bypV0ICImQyDECz76+i5/iJOcWiRyjMfLT6y00dspeuy983xHakrsHGD8xj0U/
# 3IVxnF9bDnUSVg6lFhYrgCB3dRG1TNPJoYQOM7raS5MAPRrDtIuSabwtyn84jo4+
# 9kZRPJBriMBHNsCjGVlJ9CATmaK1SKVAbRcabjgOKoIwhZTpAe6JalykREUJlTys
# hB2V//lWWYPaSpzwY+OkvxoOmJIziixEskOmx6hPcoxID5v/bqlR69W15aUlKuLq
# VWFb+/yMvaE=
# =h0Ep
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 28 Oct 2022 09:20:31 EDT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2022-10-28' of https://gitlab.com/thuth/qemu: (21 commits)
  tests/qtest: libqtest: Correct the timeout unit of blocking receive calls for win32
  tests/qtest: libqos: Do not build virtio-9p unconditionally
  tests/qtest: migration-test: Make sure QEMU process "to" exited after migration is canceled
  tests/qtest: libqtest: Introduce qtest_wait_qemu()
  tests/qtest: Use EXIT_FAILURE instead of magic number
  tests/qtest: device-plug-test: Reverse the usage of double/single quotes
  tests/qtest: Support libqtest to build and run on Windows
  tests/qtest: Use send/recv for socket communication
  accel/qtest: Support qtest accelerator for Windows
  tests: Add sndio to the FreeBSD CI containers / VM
  tests/vm: update openbsd to release 7.2
  tests/qtest/libqos/e1000e: Use e1000_regs.h
  tests/qtest/cxl-test: Remove temporary directories after testing
  tests/qtest/tpm: Clean up remainders of swtpm
  MAINTAINERS: target/s390x/: add Ilya as reviewer
  tests/tcg/s390x: Add a test for the vistr instruction
  target/s390x: Fix emulation of the VISTR instruction
  tests/tcg/s390x: Test compiler flags only once, not every time
  s390x/tod-kvm: don't save/restore the TOD in PV guests
  s390x: step down as general arch maintainer
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

include/qemu/sockets.h

@@ -33,6 +33,19 @@ int qemu_socketpair(int domain, int type, int protocol, int sv[2]);
 #endif
 
 int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
+/*
+ * A variant of send(2) which handles partial send.
+ *
+ * Return the number of bytes transferred over the socket.
+ * Set errno if fewer than `count' bytes are sent.
+ *
+ * This function don't work with non-blocking socket's.
+ * Any of the possibilities with non-blocking socket's is bad:
+ *   - return a short write (then name is wrong)
+ *   - busy wait adding (errno == EAGAIN) to the loop
+ */
+ssize_t qemu_send_full(int s, const void *buf, size_t count)
+    G_GNUC_WARN_UNUSED_RESULT;
 int socket_set_cork(int fd, int v);
 int socket_set_nodelay(int fd);
 void qemu_socket_set_block(int fd);