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GET /api/patches/2227455/?format=api
{ "id": 2227455, "url": "http://patchwork.ozlabs.org/api/patches/2227455/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260423191958.1440-8-farosas@suse.de/", "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": "<20260423191958.1440-8-farosas@suse.de>", "list_archive_url": null, "date": "2026-04-23T19:19:21", "name": "[PULL,07/43] migration: vmstate_save/load_state(): refactor tracing errors", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a23264fed19b81aa20d2b3eed49c440e84fd50f6", "submitter": { "id": 85343, "url": "http://patchwork.ozlabs.org/api/people/85343/?format=api", "name": "Fabiano Rosas", "email": "farosas@suse.de" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260423191958.1440-8-farosas@suse.de/mbox/", "series": [ { "id": 501236, "url": "http://patchwork.ozlabs.org/api/series/501236/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501236", "date": "2026-04-23T19:19:14", "name": "[PULL,01/43] checkpatch: Allow spaces after all coroutine annotations", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501236/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227455/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227455/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": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) 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Sementsov-Ogievskiy <vsementsov@yandex-team.ru>", "Subject": "[PULL 07/43] migration: vmstate_save/load_state(): refactor tracing\n errors", "Date": "Thu, 23 Apr 2026 16:19:21 -0300", "Message-ID": "<20260423191958.1440-8-farosas@suse.de>", "X-Mailer": "git-send-email 2.51.0", "In-Reply-To": "<20260423191958.1440-1-farosas@suse.de>", "References": "<20260423191958.1440-1-farosas@suse.de>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Rspamd-Action": "no action", "X-Rspamd-Server": "rspamd2.dmz-prg2.suse.org", "X-Spamd-Result": "default: False [-3.01 / 50.00]; BAYES_HAM(-3.00)[100.00%];\n NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[];\n R_MISSING_CHARSET(0.50)[];\n R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519];\n NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain];\n MX_GOOD(-0.01)[]; ARC_NA(0.00)[];\n FUZZY_RATELIMITED(0.00)[rspamd.com]; RCVD_COUNT_TWO(0.00)[2];\n MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[];\n SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from];\n TO_DN_SOME(0.00)[];\n RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from];\n RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received];\n FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[];\n DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:mid,suse.de:email,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns];\n RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[];\n RCPT_COUNT_THREE(0.00)[3];\n DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519];\n DKIM_TRACE(0.00)[suse.de:+]", "X-Rspamd-Queue-Id": "BEE326A895", "X-Spam-Score": "-3.01", "Received-SPF": "pass client-ip=195.135.223.130; envelope-from=farosas@suse.de;\n helo=smtp-out1.suse.de", "X-Spam_score_int": "-43", "X-Spam_score": "-4.4", "X-Spam_bar": "----", "X-Spam_report": "(-4.4 / 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 RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001,\n 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": "From: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>\n\nTo simplify further changes (convertion to bool+errp APIs),\nlet's rework some error paths:\n\n- get rid of int ret in traces, as we are moving to bool+errp APIs\n- split traces to _fail / _success (seems better than add boolean\n result to the message).\n- prefer short error paths (return immediately on error)\n- around trace_vmstate_load_field_error(), do not call\n qemu_file_set_error(), if the erroc comes from qemu_file_get_error()\n\nSigned-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>\nReviewed-by: Peter Xu <peterx@redhat.com>\nLink: https://lore.kernel.org/qemu-devel/20260304212303.667141-6-vsementsov@yandex-team.ru\nSigned-off-by: Fabiano Rosas <farosas@suse.de>\n---\n migration/trace-events | 6 ++++--\n migration/vmstate.c | 25 +++++++++++++++----------\n 2 files changed, 19 insertions(+), 12 deletions(-)", "diff": "diff --git a/migration/trace-events b/migration/trace-events\nindex 60e5087e38..27459dfb78 100644\n--- a/migration/trace-events\n+++ b/migration/trace-events\n@@ -56,13 +56,15 @@ postcopy_page_req_sync(void *host_addr) \"sync page req %p\"\n # vmstate.c\n vmstate_load_field_error(const char *field, int ret) \"field \\\"%s\\\" load failed, ret = %d\"\n vmstate_load_state(const char *name, int version_id) \"%s v%d\"\n-vmstate_load_state_end(const char *name, const char *reason, int val) \"%s %s/%d\"\n+vmstate_load_state_fail(const char *name, const char *reason) \"%s %s\"\n+vmstate_load_state_success(const char *name) \"%s\"\n vmstate_load_state_field(const char *name, const char *field, bool exists) \"%s:%s exists=%d\"\n vmstate_n_elems(const char *name, int n_elems) \"%s: %d\"\n vmstate_subsection_load(const char *parent) \"%s\"\n vmstate_subsection_load_bad(const char *parent, const char *sub, const char *sub2) \"%s: %s/%s\"\n vmstate_subsection_load_good(const char *parent) \"%s\"\n-vmstate_save_state_pre_save_res(const char *name, int res) \"%s/%d\"\n+vmstate_save_state_pre_save_fail(const char *name) \"%s\"\n+vmstate_save_state_pre_save_success(const char *name) \"%s\"\n vmstate_save_state_loop(const char *name, const char *field, int n_elems) \"%s/%s[%d]\"\n vmstate_save_state_top(const char *idstr) \"%s\"\n vmstate_subsection_save_loop(const char *name, const char *sub) \"%s/%s\"\ndiff --git a/migration/vmstate.c b/migration/vmstate.c\nindex dd7cd27993..87e1f04959 100644\n--- a/migration/vmstate.c\n+++ b/migration/vmstate.c\n@@ -144,7 +144,7 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,\n error_setg(errp, \"%s: incoming version_id %d is too new \"\n \"for local version_id %d\",\n vmsd->name, version_id, vmsd->version_id);\n- trace_vmstate_load_state_end(vmsd->name, \"too new\", -EINVAL);\n+ trace_vmstate_load_state_fail(vmsd->name, \"too new\");\n return -EINVAL;\n }\n \n@@ -152,7 +152,7 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,\n error_setg(errp, \"%s: incoming version_id %d is too old \"\n \"for local minimum version_id %d\",\n vmsd->name, version_id, vmsd->minimum_version_id);\n- trace_vmstate_load_state_end(vmsd->name, \"too old\", -EINVAL);\n+ trace_vmstate_load_state_fail(vmsd->name, \"too old\");\n return -EINVAL;\n }\n \n@@ -240,10 +240,10 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,\n error_setg(errp,\n \"Failed to load %s state: stream error: %d\",\n vmsd->name, ret);\n+ trace_vmstate_load_field_error(field->name, ret);\n+ return ret;\n }\n- }\n-\n- if (ret < 0) {\n+ } else {\n qemu_file_set_error(f, ret);\n trace_vmstate_load_field_error(field->name, ret);\n return ret;\n@@ -269,7 +269,8 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,\n error_prepend(errp, \"post load hook failed for: %s, version_id: \"\n \"%d, minimum_version: %d: \", vmsd->name,\n vmsd->version_id, vmsd->minimum_version_id);\n- ret = -EINVAL;\n+ trace_vmstate_load_state_fail(vmsd->name, \"post-load\");\n+ return -EINVAL;\n }\n } else if (vmsd->post_load) {\n ret = vmsd->post_load(opaque, version_id);\n@@ -279,12 +280,14 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,\n \"minimum_version: %d, ret: %d\",\n vmsd->name, vmsd->version_id, vmsd->minimum_version_id,\n ret);\n+ trace_vmstate_load_state_fail(vmsd->name, \"post-load\");\n+ return ret;\n }\n }\n \n- trace_vmstate_load_state_end(vmsd->name, \"end\", ret);\n+ trace_vmstate_load_state_success(vmsd->name);\n \n- return ret;\n+ return 0;\n }\n \n static int vmfield_name_num(const VMStateField *start,\n@@ -444,20 +447,22 @@ static int vmstate_save_state_v(QEMUFile *f, const VMStateDescription *vmsd,\n \n if (vmsd->pre_save_errp) {\n ret = vmsd->pre_save_errp(opaque, errp) ? 0 : -EINVAL;\n- trace_vmstate_save_state_pre_save_res(vmsd->name, ret);\n if (ret < 0) {\n error_prepend(errp, \"pre-save for %s failed: \", vmsd->name);\n+ trace_vmstate_save_state_pre_save_fail(vmsd->name);\n return ret;\n }\n } else if (vmsd->pre_save) {\n ret = vmsd->pre_save(opaque);\n- trace_vmstate_save_state_pre_save_res(vmsd->name, ret);\n if (ret) {\n error_setg(errp, \"pre-save failed: %s\", vmsd->name);\n+ trace_vmstate_save_state_pre_save_fail(vmsd->name);\n return ret;\n }\n }\n \n+ trace_vmstate_save_state_pre_save_success(vmsd->name);\n+\n if (vmdesc) {\n json_writer_str(vmdesc, \"vmsd_name\", vmsd->name);\n json_writer_int64(vmdesc, \"version\", version_id);\n", "prefixes": [ "PULL", "07/43" ] }