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GET /api/patches/2219978/?format=api
{ "id": 2219978, "url": "http://patchwork.ozlabs.org/api/patches/2219978/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260405-work-qmp-monitor-hotplug-v2-4-ad5bedd2917a@kernel.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260405-work-qmp-monitor-hotplug-v2-4-ad5bedd2917a@kernel.org>", "list_archive_url": null, "date": "2026-04-05T13:11:20", "name": "[v2,4/5] tests/qtest: add tests for dynamic monitor add/remove", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f323c01676524d8ccff94452ebccbef2a535f6b4", "submitter": { "id": 82326, "url": "http://patchwork.ozlabs.org/api/people/82326/?format=api", "name": "Christian Brauner", "email": "brauner@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260405-work-qmp-monitor-hotplug-v2-4-ad5bedd2917a@kernel.org/mbox/", "series": [ { "id": 498784, "url": "http://patchwork.ozlabs.org/api/series/498784/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498784", "date": "2026-04-05T13:11:16", "name": "monitor: add dynamic QMP monitor hotplug support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/498784/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219978/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219978/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ 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b=YO/9Aj3DJ1JjNoVW6JEuye2rD+QiJ+tpF6E34Y7RpQmJVNB4Ssq1XVcn0GzRZwuPv\n 9lQn/Y1cygEWdRSTYgGsMmZUN3cuBzhmAMaQJ8HU8KOoepJs3yxP7+7jWCiLMWCLWF\n lr62FIUVkdcxNMIXUwk5VmDlXFKPUemLURYzfwikEfBOrsr7CPSj0m6CVhgP8kuB/3\n DLESmKsU2ZA2H45fGzPiy3oNmJd05J9mLwxiV66fW4cIIVPMw7orgMYVlqG32uLuG6\n Jod4yV5q+cYBpftHH0/miHHxE78KWKjm5klQkurXwUAHa9PChHs0vvZOyHvY6ddwt/\n wzShQYKFrDkHw==", "From": "Christian Brauner <brauner@kernel.org>", "Date": "Sun, 05 Apr 2026 15:11:20 +0200", "Subject": "[PATCH v2 4/5] tests/qtest: add tests for dynamic monitor add/remove", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260405-work-qmp-monitor-hotplug-v2-4-ad5bedd2917a@kernel.org>", "References": "<20260405-work-qmp-monitor-hotplug-v2-0-ad5bedd2917a@kernel.org>", "In-Reply-To": "<20260405-work-qmp-monitor-hotplug-v2-0-ad5bedd2917a@kernel.org>", "To": "qemu-devel@nongnu.org", "Cc": "Markus Armbruster <armbru@redhat.com>, Eric Blake <eblake@redhat.com>,\n Fabiano Rosas <farosas@suse.de>, Laurent Vivier <lvivier@redhat.com>,\n Paolo Bonzini <pbonzini@redhat.com>, Thomas Huth <th.huth+qemu@posteo.eu>,\n\t=?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>, =?utf-8?q?Dani?=\n\t=?utf-8?q?el_P=2E_Berrang=C3=A9?= <berrange@redhat.com>,\n Christian Brauner <brauner@kernel.org>", "X-Mailer": "b4 0.16-dev", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=7943; i=brauner@kernel.org;\n h=from:subject:message-id; bh=cP8XbmJh0GXQB9MuBcgRv0ncdejCpajjhdMyKSshUIc=;\n b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWReim9at7b/kZ3QTuV7aSVpAWpnNabFyZ1ek6n7Nj3XM\n 2HenNPlHaUsDGJcDLJiiiwO7Sbhcst5KjYbZWrAzGFlAhnCwMUpABOZ3sPIMLmyZ0+efnRxd1zc\n XL5fNwseLeydJKzM13L11+b2z9KPXzP8D9i566fqnYarOt/sWbY7FCw9cjz2M0dB5YmS/9XpPup\n PeQE=", "X-Developer-Key": "i=brauner@kernel.org; a=openpgp;\n fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624", "Received-SPF": "pass client-ip=2600:3c0a:e001:78e:0:1991:8:25;\n envelope-from=brauner@kernel.org; helo=sea.source.kernel.org", "X-Spam_score_int": "-25", "X-Spam_score": "-2.6", "X-Spam_bar": "--", "X-Spam_report": "(-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Test the monitor-add, monitor-remove, and query-monitors QMP commands:\n\n- Basic lifecycle: chardev-add -> monitor-add -> query-monitors ->\n monitor-remove -> chardev-remove\n- Error: duplicate monitor id\n- Error: monitor-remove on nonexistent id\n- Error: monitor-add with nonexistent chardev\n- Error: second monitor on same chardev (chardev already in use)\n- Error: monitor-remove on CLI-created monitor\n- Error: monitor-remove on HMP monitor\n- Re-add after remove: same id and chardev reusable after removal\n\nSigned-off-by: Christian Brauner (Amutable) <brauner@kernel.org>\n---\n tests/qtest/qmp-test.c | 185 +++++++++++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 185 insertions(+)", "diff": "diff --git a/tests/qtest/qmp-test.c b/tests/qtest/qmp-test.c\nindex edf0886787..a493a812a9 100644\n--- a/tests/qtest/qmp-test.c\n+++ b/tests/qtest/qmp-test.c\n@@ -337,6 +337,186 @@ static void test_qmp_missing_any_arg(void)\n qtest_quit(qts);\n }\n \n+static void test_qmp_monitor_add_remove(void)\n+{\n+ QTestState *qts;\n+ QDict *resp;\n+\n+ qts = qtest_init(common_args);\n+\n+ /* Create a null chardev for the dynamic monitor */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'chardev-add',\"\n+ \" 'arguments': {'id': 'monitor-chardev',\"\n+ \" 'backend': {'type': 'null',\"\n+ \" 'data': {}}}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ /* Add a dynamic monitor */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-add',\"\n+ \" 'arguments': {'id': 'dyn-mon',\"\n+ \" 'chardev': 'monitor-chardev'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ /* Verify it shows up in query-monitors */\n+ resp = qtest_qmp(qts, \"{'execute': 'query-monitors'}\");\n+ g_assert(!qdict_haskey(resp, \"error\"));\n+ qobject_unref(resp);\n+\n+ /* Error: duplicate id */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-add',\"\n+ \" 'arguments': {'id': 'dyn-mon',\"\n+ \" 'chardev': 'monitor-chardev'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ /* Remove the dynamic monitor */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'dyn-mon'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ /* Error: remove nonexistent */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'dyn-mon'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ /* Add again after remove -- same id and chardev should work */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-add',\"\n+ \" 'arguments': {'id': 'dyn-mon',\"\n+ \" 'chardev': 'monitor-chardev'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ /* Clean up */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'dyn-mon'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'chardev-remove',\"\n+ \" 'arguments': {'id': 'monitor-chardev'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ qtest_quit(qts);\n+}\n+\n+static void test_qmp_monitor_error_paths(void)\n+{\n+ QTestState *qts;\n+ QDict *resp;\n+\n+ qts = qtest_init(common_args);\n+\n+ /* Error: chardev does not exist */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-add',\"\n+ \" 'arguments': {'id': 'bad-mon',\"\n+ \" 'chardev': 'nonexistent'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ /* Error: remove nonexistent monitor */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'bogus'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ qtest_quit(qts);\n+}\n+\n+static void test_qmp_monitor_chardev_in_use(void)\n+{\n+ QTestState *qts;\n+ QDict *resp;\n+\n+ qts = qtest_init(common_args);\n+\n+ /* Create a null chardev */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'chardev-add',\"\n+ \" 'arguments': {'id': 'shared-chr',\"\n+ \" 'backend': {'type': 'null',\"\n+ \" 'data': {}}}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ /* Attach first monitor */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-add',\"\n+ \" 'arguments': {'id': 'mon-1',\"\n+ \" 'chardev': 'shared-chr'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ /* Error: second monitor on the same chardev */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-add',\"\n+ \" 'arguments': {'id': 'mon-2',\"\n+ \" 'chardev': 'shared-chr'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ /* Clean up */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'mon-1'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'chardev-remove',\"\n+ \" 'arguments': {'id': 'shared-chr'}}\");\n+ g_assert(qdict_haskey(resp, \"return\"));\n+ qobject_unref(resp);\n+\n+ qtest_quit(qts);\n+}\n+\n+static void test_qmp_monitor_remove_cli(void)\n+{\n+ QTestState *qts;\n+ QDict *resp;\n+\n+ /* Launch with a named CLI monitor on a null chardev */\n+ qts = qtest_initf(\"%s -chardev null,id=cli-chr\"\n+ \" -mon id=cli-mon,chardev=cli-chr,mode=control\",\n+ common_args);\n+\n+ /* Error: monitor-remove must reject CLI-created monitors */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'cli-mon'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ qtest_quit(qts);\n+}\n+\n+static void test_qmp_monitor_remove_hmp(void)\n+{\n+ QTestState *qts;\n+ QDict *resp;\n+\n+ qts = qtest_initf(\"%s -chardev null,id=hmp-chr\"\n+ \" -mon id=hmp-mon,chardev=hmp-chr,mode=readline\",\n+ common_args);\n+\n+ /* Error: monitor-remove must reject HMP monitors */\n+ resp = qtest_qmp(qts,\n+ \"{'execute': 'monitor-remove',\"\n+ \" 'arguments': {'id': 'hmp-mon'}}\");\n+ qmp_expect_error_and_unref(resp, \"GenericError\");\n+\n+ qtest_quit(qts);\n+}\n+\n int main(int argc, char *argv[])\n {\n g_test_init(&argc, &argv, NULL);\n@@ -348,6 +528,11 @@ int main(int argc, char *argv[])\n #endif\n qtest_add_func(\"qmp/preconfig\", test_qmp_preconfig);\n qtest_add_func(\"qmp/missing-any-arg\", test_qmp_missing_any_arg);\n+ qtest_add_func(\"qmp/monitor-add-remove\", test_qmp_monitor_add_remove);\n+ qtest_add_func(\"qmp/monitor-error-paths\", test_qmp_monitor_error_paths);\n+ qtest_add_func(\"qmp/monitor-chardev-in-use\", test_qmp_monitor_chardev_in_use);\n+ qtest_add_func(\"qmp/monitor-remove-cli\", test_qmp_monitor_remove_cli);\n+ qtest_add_func(\"qmp/monitor-remove-hmp\", test_qmp_monitor_remove_hmp);\n \n return g_test_run();\n }\n", "prefixes": [ "v2", "4/5" ] }