OOB commands were introduced in commit cf869d53172. Unfortunately, we ran into a regression, and had to disable them by default for 2.12 (commit be933ffc23).
http://lists.gnu.org/archive/html/qemu-devel/2018-03/msg06231.html The regression has since been fixed (commit 951702f39c7 "monitor: bind dispatch bh to iohandler context"). Time to re-enable OOB. This patch partly reverts be933ffc23 (monitor: new parameter "x-oob"), and turns it on again for non-MUX QMPs. Note that we can't enable Out-Of-Band for monitors with MUX-typed chardev backends, because not all the chardev frontends can run without main thread, or can run in multiple threads. Some trivial touch-up in the test code is required to make sure qmp-test won't break. Reviewed-by: Markus Armbruster <arm...@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com> Signed-off-by: Peter Xu <pet...@redhat.com> --- include/monitor/monitor.h | 1 - monitor.c | 22 ++++++---------------- tests/libqtest.c | 2 +- tests/qmp-test.c | 2 +- vl.c | 5 ----- 5 files changed, 8 insertions(+), 24 deletions(-) diff --git a/include/monitor/monitor.h b/include/monitor/monitor.h index 0c0a37d8cb..c1b40a9cac 100644 --- a/include/monitor/monitor.h +++ b/include/monitor/monitor.h @@ -13,7 +13,6 @@ extern __thread Monitor *cur_mon; #define MONITOR_USE_READLINE 0x02 #define MONITOR_USE_CONTROL 0x04 #define MONITOR_USE_PRETTY 0x08 -#define MONITOR_USE_OOB 0x10 #define QMP_REQ_QUEUE_LEN_MAX 8 diff --git a/monitor.c b/monitor.c index f5911399d8..65a5e5f41a 100644 --- a/monitor.c +++ b/monitor.c @@ -4545,19 +4545,12 @@ void monitor_init(Chardev *chr, int flags) { Monitor *mon = g_malloc(sizeof(*mon)); bool use_readline = flags & MONITOR_USE_READLINE; - bool use_oob = flags & MONITOR_USE_OOB; - - if (use_oob) { - if (CHARDEV_IS_MUX(chr)) { - error_report("Monitor out-of-band is not supported with " - "MUX typed chardev backend"); - exit(1); - } - if (use_readline) { - error_report("Monitor out-of-band is only supported by QMP"); - exit(1); - } - } + /* + * Note: we can't enable Out-Of-Band for monitors with MUX-typed + * chardev backends, because not all the chardev frontends can run + * without main thread, or can run in multiple threads. + */ + bool use_oob = (flags & MONITOR_USE_CONTROL) && !CHARDEV_IS_MUX(chr); monitor_data_init(mon, false, use_oob); @@ -4647,9 +4640,6 @@ QemuOptsList qemu_mon_opts = { },{ .name = "pretty", .type = QEMU_OPT_BOOL, - },{ - .name = "x-oob", - .type = QEMU_OPT_BOOL, }, { /* end of list */ } }, diff --git a/tests/libqtest.c b/tests/libqtest.c index 2cd5736642..8bf9fd1ae3 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -231,7 +231,7 @@ QTestState *qtest_init_without_qmp_handshake(bool use_oob, "-display none " "%s", qemu_binary, socket_path, getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null", - qmp_socket_path, use_oob ? ",x-oob=on" : "", + qmp_socket_path, "", extra_args ?: ""); execlp("/bin/sh", "sh", "-c", command, NULL); exit(1); diff --git a/tests/qmp-test.c b/tests/qmp-test.c index 6c419f6023..030d813f77 100644 --- a/tests/qmp-test.c +++ b/tests/qmp-test.c @@ -116,7 +116,7 @@ static void test_qmp_protocol(void) g_assert(q); test_version(qdict_get(q, "version")); capabilities = qdict_get_qlist(q, "capabilities"); - g_assert(capabilities && qlist_empty(capabilities)); + g_assert(capabilities); qobject_unref(resp); /* Test valid command before handshake */ diff --git a/vl.c b/vl.c index 4e25c78bff..db766f5295 100644 --- a/vl.c +++ b/vl.c @@ -2282,11 +2282,6 @@ static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp) if (qemu_opt_get_bool(opts, "pretty", 0)) flags |= MONITOR_USE_PRETTY; - /* OOB is off by default */ - if (qemu_opt_get_bool(opts, "x-oob", 0)) { - flags |= MONITOR_USE_OOB; - } - chardev = qemu_opt_get(opts, "chardev"); chr = qemu_chr_find(chardev); if (chr == NULL) { -- 2.17.1