Patch Detail

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{
    "id": 2197918,
    "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197918/?format=api",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/1.0/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": ""
    },
    "msgid": "<20260218-colo_unit_test_multifd-v9-11-d8dbdb0ca6f6@web.de>",
    "date": "2026-02-18T21:29:31",
    "name": "[v9,11/19] colo: Hold the BQL while sending ram state",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "361ed82ee5d612d41a0e93f219045fd9c5262aa9",
    "submitter": {
        "id": 76468,
        "url": "http://patchwork.ozlabs.org/api/1.0/people/76468/?format=api",
        "name": "Lukas Straub",
        "email": "lukasstraub2@web.de"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260218-colo_unit_test_multifd-v9-11-d8dbdb0ca6f6@web.de/mbox/",
    "series": [
        {
            "id": 492617,
            "url": "http://patchwork.ozlabs.org/api/1.0/series/492617/?format=api",
            "date": "2026-02-18T21:29:37",
            "name": "migration: Add COLO multifd support and COLO migration unit test",
            "version": 9,
            "mbox": "http://patchwork.ozlabs.org/series/492617/mbox/"
        }
    ],
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2197918/checks/",
    "tags": {},
    "headers": {
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        "X-UI-Sender-Class": "814a7b36-bfc1-4dae-8640-3722d8ec6cd6",
        "From": "Lukas Straub <lukasstraub2@web.de>",
        "Date": "Wed, 18 Feb 2026 22:29:31 +0100",
        "Subject": "[PATCH v9 11/19] colo: Hold the BQL while sending ram state",
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        "Message-Id": "<20260218-colo_unit_test_multifd-v9-11-d8dbdb0ca6f6@web.de>",
        "References": "<20260218-colo_unit_test_multifd-v9-0-d8dbdb0ca6f6@web.de>",
        "In-Reply-To": "<20260218-colo_unit_test_multifd-v9-0-d8dbdb0ca6f6@web.de>",
        "To": "qemu-devel@nongnu.org",
        "Cc": "Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>,\n Laurent Vivier <lvivier@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>,\n Zhang Chen <zhangckid@gmail.com>,\n Hailiang Zhang <zhanghailiang@xfusion.com>,\n Markus Armbruster <armbru@redhat.com>, Li Zhijian <lizhijian@fujitsu.com>,\n \"Dr. David Alan Gilbert\" <dave@treblig.org>,\n Lukas Straub <lukasstraub2@web.de>",
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        "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org",
        "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"
    },
    "content": "qemu_savevm_state_complete_precopy() requires that BQL is held.\n\nThis fixes a crash when running with TCG accel.\n\nReviewed-by: Peter Xu <peterx@redhat.com>\nSigned-off-by: Lukas Straub <lukasstraub2@web.de>\n---\n migration/colo.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)",
    "diff": "diff --git a/migration/colo.c b/migration/colo.c\nindex dc7cfa81ef7db78e3ee372642de48567c5bc06eb..3297aa593cd9f87bf1013598464cc581a9d23531 100644\n--- a/migration/colo.c\n+++ b/migration/colo.c\n@@ -455,9 +455,8 @@ static int colo_do_checkpoint_transaction(MigrationState *s,\n \n     /* Note: device state is saved into buffer */\n     ret = qemu_save_device_state(fb, &local_err);\n-\n-    bql_unlock();\n     if (ret < 0) {\n+        bql_unlock();\n         goto out;\n     }\n \n@@ -471,6 +470,7 @@ static int colo_do_checkpoint_transaction(MigrationState *s,\n      */\n     qemu_savevm_state_complete_precopy_iterable(s->to_dst_file, false);\n     qemu_savevm_state_end(s->to_dst_file);\n+    bql_unlock();\n \n     /*\n      * We need the size of the VMstate data in Secondary side,\n",
    "prefixes": [
        "v9",
        "11/19"
    ]
}