{"id":2197908,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2197908/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/projects/14/?format=json","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-v9-4-d8dbdb0ca6f6@web.de>","date":"2026-02-18T21:29:24","name":"[v9,04/19] colo: Replace migration_incoming_colo_enabled() with migrate_colo()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"4b94d3994387e9cae5530d8016a519b333f82862","submitter":{"id":76468,"url":"http://patchwork.ozlabs.org/api/1.0/people/76468/?format=json","name":"Lukas 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CDIhi7YvwcCfJ4bjlg==","X-UI-Sender-Class":"814a7b36-bfc1-4dae-8640-3722d8ec6cd6","From":"Lukas Straub ","Date":"Wed, 18 Feb 2026 22:29:24 +0100","Subject":"[PATCH v9 04/19] colo: Replace migration_incoming_colo_enabled()\n with migrate_colo()","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"quoted-printable","Message-Id":"<20260218-colo_unit_test_multifd-v9-4-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 , Fabiano Rosas ,\n Laurent Vivier , Paolo Bonzini ,\n Zhang Chen ,\n Hailiang Zhang ,\n Markus Armbruster , Li Zhijian ,\n \"Dr. David Alan Gilbert\" ,\n Lukas Straub ","X-Mailer":"b4 0.14.2","X-Developer-Signature":"v=1; a=openpgp-sha256; l=3533; i=lukasstraub2@web.de;\n h=from:subject:message-id; bh=n0JNkGWwDvp69U+jS7cX+vJwFoFOUey0gb5uYJ0EtrM=;\n 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envelope-from=lukasstraub2@web.de;\n helo=mout.web.de","X-Spam_score_int":"-24","X-Spam_score":"-2.5","X-Spam_bar":"--","X-Spam_report":"(-2.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7,\n RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Since\n121ccedc2b migration: block incoming colo when capability is disabled\n\nx-colo capability needs to be always enabled on the incoming side.\nSo migration_incoming_colo_enabled() and migrate_colo() are equivalent\nwith migrate_colo() being easier to reason about since it is always true\nduring the whole migration.\n\nReviewed-by: Fabiano Rosas \nReviewed-by: Peter Xu \nSigned-off-by: Lukas Straub \n---\n include/migration/colo.h | 1 -\n migration/colo.c | 2 +-\n migration/migration.c | 9 ++-------\n migration/ram.c | 2 +-\n 4 files changed, 4 insertions(+), 10 deletions(-)","diff":"diff --git a/include/migration/colo.h b/include/migration/colo.h\nindex d4fe422e4d335d3bef4f860f56400fcd73287a0e..2496a968cc1ce709f706c0efe57e4f765f163d3c 100644\n--- a/include/migration/colo.h\n+++ b/include/migration/colo.h\n@@ -27,7 +27,6 @@ bool migration_in_colo_state(void);\n /* loadvm */\n int migration_incoming_enable_colo(Error **errp);\n void migration_incoming_disable_colo(void);\n-bool migration_incoming_colo_enabled(void);\n bool migration_incoming_in_colo_state(void);\n \n COLOMode get_colo_mode(void);\ndiff --git a/migration/colo.c b/migration/colo.c\nindex f7a5bd3619a49a3b4a8306973de7a4411cc0df58..97a224c39c49ff2269f375db47112458cab0b4cb 100644\n--- a/migration/colo.c\n+++ b/migration/colo.c\n@@ -935,7 +935,7 @@ void coroutine_fn colo_incoming_co(void)\n QemuThread th;\n \n assert(bql_locked());\n- assert(migration_incoming_colo_enabled());\n+ assert(migrate_colo());\n \n qemu_thread_create(&th, MIGRATION_THREAD_DST_COLO,\n colo_process_incoming_thread,\ndiff --git a/migration/migration.c b/migration/migration.c\nindex c2b9621190f8678ac6b32d6794d9bcb6ffa5e402..ef6aac53343f2217cd1aa37e493483703068d1ff 100644\n--- a/migration/migration.c\n+++ b/migration/migration.c\n@@ -605,11 +605,6 @@ int migrate_send_rp_req_pages(MigrationIncomingState *mis,\n }\n \n static bool migration_colo_enabled;\n-bool migration_incoming_colo_enabled(void)\n-{\n- return migration_colo_enabled;\n-}\n-\n void migration_incoming_disable_colo(void)\n {\n ram_block_discard_disable(false);\n@@ -739,7 +734,7 @@ static void process_incoming_migration_bh(void *opaque)\n } else {\n runstate_set(RUN_STATE_PAUSED);\n }\n- } else if (migration_incoming_colo_enabled()) {\n+ } else if (migrate_colo()) {\n migration_incoming_disable_colo();\n vm_start();\n } else {\n@@ -807,7 +802,7 @@ process_incoming_migration_co(void *opaque)\n goto fail;\n }\n \n- if (migration_incoming_colo_enabled()) {\n+ if (migrate_colo()) {\n /* yield until COLO exit */\n colo_incoming_co();\n }\ndiff --git a/migration/ram.c b/migration/ram.c\nindex fc7ece2c1a10f34aa5a91f58cbe42ea418d7c078..aebf77aa0b861e00516d6f1090aebefdd0d97e54 100644\n--- a/migration/ram.c\n+++ b/migration/ram.c\n@@ -4370,7 +4370,7 @@ static int ram_load_precopy(QEMUFile *f)\n * speed of the migration, but it obviously reduce the downtime of\n * back-up all SVM'S memory in COLO preparing stage.\n */\n- if (migration_incoming_colo_enabled()) {\n+ if (migrate_colo()) {\n if (migration_incoming_in_colo_state()) {\n /* In COLO stage, put all pages into cache temporarily */\n host = colo_cache_from_block_offset(block, addr, true);\n","prefixes":["v9","04/19"]}