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GET /api/patches/2215595/?format=api
{ "id": 2215595, "url": "http://patchwork.ozlabs.org/api/patches/2215595/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260324194333.30004-6-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": "<20260324194333.30004-6-farosas@suse.de>", "list_archive_url": null, "date": "2026-03-24T19:43:20", "name": "[RFC,v1,05/17] vmstate: Remove vmdesc_loop", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "fb5602eee0875fc129fff3d00ce07b47e4b75914", "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/20260324194333.30004-6-farosas@suse.de/mbox/", "series": [ { "id": 497339, "url": "http://patchwork.ozlabs.org/api/series/497339/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=497339", "date": "2026-03-24T19:43:16", "name": "migration: vmstate_save|load changes for peterx", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497339/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2215595/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2215595/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) header.d=suse.de header.i=@suse.de header.a=rsa-sha256\n header.s=susede2_rsa header.b=n031Bixc;\n\tdkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=PEFEgJDw;\n\tdkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de\n header.a=rsa-sha256 header.s=susede2_rsa header.b=n031Bixc;\n\tdkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=PEFEgJDw;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Tue, 24 Mar 2026 19:43:43 +0000" ], "DKIM-Signature": [ "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1774381424;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=mqFU08QiemyHMKmACwXdYM3VqArmk1wjvFdrAmao4JI=;\n b=n031BixcOB1TXteDcoVZ0zbAOgEnVYA9yBNrBF9//Ev/k7dvhh11GAeHyZq2PX8Zrsl81Y\n pqPMlrZlYyQC0tN3jiXmf/ew84dYU1N37QzNUjxa5trVusqQyjxQz2RNEMYo/EPUeKzc9Q\n H/60EoGNytkvxwTGCYGIfqrdrursXHM=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1774381424;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=mqFU08QiemyHMKmACwXdYM3VqArmk1wjvFdrAmao4JI=;\n b=PEFEgJDwPPJ0lriYoNtNuwkSsyPzRUce5oP2DiM0gTJvRSIQwRGUw9YED0fgOFOTkUK8yu\n rjCHXmEVn9cPuDBA==", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1774381424;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=mqFU08QiemyHMKmACwXdYM3VqArmk1wjvFdrAmao4JI=;\n b=n031BixcOB1TXteDcoVZ0zbAOgEnVYA9yBNrBF9//Ev/k7dvhh11GAeHyZq2PX8Zrsl81Y\n pqPMlrZlYyQC0tN3jiXmf/ew84dYU1N37QzNUjxa5trVusqQyjxQz2RNEMYo/EPUeKzc9Q\n H/60EoGNytkvxwTGCYGIfqrdrursXHM=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1774381424;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=mqFU08QiemyHMKmACwXdYM3VqArmk1wjvFdrAmao4JI=;\n b=PEFEgJDwPPJ0lriYoNtNuwkSsyPzRUce5oP2DiM0gTJvRSIQwRGUw9YED0fgOFOTkUK8yu\n rjCHXmEVn9cPuDBA==" ], "From": "Fabiano Rosas <farosas@suse.de>", "To": "qemu-devel@nongnu.org", "Cc": "Peter Xu <peterx@redhat.com>,\n Alexander Mikhalitsyn <alexander@mihalicyn.com>,\n Juraj Marcin <jmarcin@redhat.com>", "Subject": "[RFC PATCH v1 05/17] vmstate: Remove vmdesc_loop", "Date": "Tue, 24 Mar 2026 16:43:20 -0300", "Message-ID": "<20260324194333.30004-6-farosas@suse.de>", "X-Mailer": "git-send-email 2.51.0", "In-Reply-To": "<20260324194333.30004-1-farosas@suse.de>", "References": "<20260324194333.30004-1-farosas@suse.de>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Spamd-Result": "default: False [-3.01 / 50.00]; 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helo=smtp-out2.suse.de", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 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, 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": "The vmdesc_loop variable is being used as a hacky way of writing the\nJSON description only for the first element of a compressed\narray. There are also a few implicit uses, such as writing the JSON\nfor the first non-compressed element after a compressed portion.\n\nFuture work will have trouble with this. Use a simple boolean to be\nexplicit now.\n\nSigned-off-by: Fabiano Rosas <farosas@suse.de>\n---\n migration/vmstate.c | 25 ++++++++++++++-----------\n 1 file changed, 14 insertions(+), 11 deletions(-)", "diff": "diff --git a/migration/vmstate.c b/migration/vmstate.c\nindex dec9cf920b..7a12245d36 100644\n--- a/migration/vmstate.c\n+++ b/migration/vmstate.c\n@@ -622,8 +622,9 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMStateDescription *vmsd,\n void *first_elem = opaque + field->offset;\n int i, n_elems = vmstate_n_elems(opaque, field);\n int size = vmstate_size(opaque, field);\n- JSONWriter *vmdesc_loop = vmdesc;\n bool is_null_prev = false;\n+ bool use_vmdesc = true;\n+\n /*\n * When this is enabled, it means we will always push a ptr\n * marker first for each element saying if it's populated.\n@@ -673,7 +674,7 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMStateDescription *vmsd,\n is_null != is_null_prev) {\n \n is_null_prev = is_null;\n- vmdesc_loop = vmdesc;\n+ use_vmdesc = true;\n \n for (int j = i + 1; j < n_elems; j++) {\n void *elem = *(void **)(first_elem + size * j);\n@@ -686,8 +687,13 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMStateDescription *vmsd,\n }\n }\n \n+ if (use_dynamic_array) {\n+ use_vmdesc = true;\n+ }\n+\n ok = vmstate_save_field_with_vmdesc(f, curr_elem, size, vmsd,\n- inner_field, vmdesc_loop,\n+ inner_field,\n+ use_vmdesc ? vmdesc : NULL,\n i, max_elems, errp);\n \n /* If we used a fake temp field.. free it now */\n@@ -708,19 +714,16 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMStateDescription *vmsd,\n * NOTE: do not use vmstate_size() here because we want\n * to dump the real VMSD object now.\n */\n- ok = vmstate_save_field_with_vmdesc(f, curr_elem,\n- field->size, vmsd,\n- field, vmdesc_loop,\n- i, max_elems, errp);\n+ ok = vmstate_save_field_with_vmdesc(\n+ f, curr_elem, field->size, vmsd, field,\n+ use_vmdesc ? vmdesc : NULL, i, max_elems, errp);\n+\n if (!ok) {\n goto out;\n }\n }\n \n- /* Compressed arrays only care about the first element */\n- if (vmdesc_loop && vmsd_can_compress(field)) {\n- vmdesc_loop = NULL;\n- }\n+ use_vmdesc = false;\n }\n } else {\n if (field->flags & VMS_MUST_EXIST) {\n", "prefixes": [ "RFC", "v1", "05/17" ] }