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monitor: Remove "x-oob", offer capability "oob" unconditionally

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Out-of-band command execution was introduced in commit cf869d5317.
Unfortunately, we ran into a regression, and had to turn it into an
experimental option for 2.12 (commit be933ffc23).

  http://lists.gnu.org/archive/html/qemu-devel/2018-03/msg06231.html

The regression has since been fixed (commit 951702f39c "monitor: bind
dispatch bh to iohandler context").  A thorough re-review of OOB
commands led to a few more issues, which have also been addressed.

This patch partly reverts be933ffc23 (monitor: new parameter "x-oob"),
and makes QMP monitors again offer capability "oob" whenever they can
provide it, i.e. when the monitor's character device is capable of
running in an I/O thread.

Some trivial touch-up in the test code is required to make sure qmp-test
won't break.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20181009062718.1914-4-peterx@redhat.com>
[Conflict with "monitor: check if chardev can switch gcontext for OOB"
resolved, commit message updated]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Peter Xu 2018-10-09 14:27:15 +08:00 • committed by Markus Armbruster
parent 9ab84470ff
commit 8258292e18
5 changed files with 7 additions and 26 deletions
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1
include/monitor/monitor.h
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@ -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