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GET /api/patches/2215594/?format=api
{ "id": 2215594, "url": "http://patchwork.ozlabs.org/api/patches/2215594/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260324194333.30004-4-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": "<20260324194333.30004-4-farosas@suse.de>", "list_archive_url": null, "date": "2026-03-24T19:43:18", "name": "[RFC,v1,03/17] vmstate: Stop checking size for nullptr compression", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "bdd41962f47913774cfa1c0e0604849622f28967", "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/20260324194333.30004-4-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/2215594/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2215594/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=qkcutVcO;\n\tdkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=7assybSd;\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=qkcutVcO;\n\tdkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=7assybSd;\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 19:43:40 +0000" ], "DKIM-Signature": [ "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1774381421;\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=e2FV9zihxhp8bsTYaLNeKNqOqq6SsZysoqtwXgfHDvo=;\n b=qkcutVcOh60wGwlSNvx+tVUnkNzjrhA9OcVqPZM6SJPRoJwsA7EF7wr9OWwsZrhAR76Vix\n inWxOx8PvBT2rlkfKw9tMF40X9kiXpVP39/6ymByzfAg+FWBE+I4Hd4v7daeoipN3dWJJO\n Lwo7u3y/mNCM0RMuozYLDOiiD1eEM7g=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1774381421;\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=e2FV9zihxhp8bsTYaLNeKNqOqq6SsZysoqtwXgfHDvo=;\n b=7assybSdChlpQdVJ6uY2sYV2V+7XuH/ukSl8dOTUcRzlZmwy8/8uxy3Vwk4Mmc9HAC7xrG\n 5uN4OOV23sFjeIAA==", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1774381421;\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=e2FV9zihxhp8bsTYaLNeKNqOqq6SsZysoqtwXgfHDvo=;\n b=qkcutVcOh60wGwlSNvx+tVUnkNzjrhA9OcVqPZM6SJPRoJwsA7EF7wr9OWwsZrhAR76Vix\n inWxOx8PvBT2rlkfKw9tMF40X9kiXpVP39/6ymByzfAg+FWBE+I4Hd4v7daeoipN3dWJJO\n Lwo7u3y/mNCM0RMuozYLDOiiD1eEM7g=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1774381421;\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=e2FV9zihxhp8bsTYaLNeKNqOqq6SsZysoqtwXgfHDvo=;\n b=7assybSdChlpQdVJ6uY2sYV2V+7XuH/ukSl8dOTUcRzlZmwy8/8uxy3Vwk4Mmc9HAC7xrG\n 5uN4OOV23sFjeIAA==" ], "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 03/17] vmstate: Stop checking size for nullptr\n compression", "Date": "Tue, 24 Mar 2026 16:43:18 -0300", "Message-ID": "<20260324194333.30004-4-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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envelope-from=farosas@suse.de;\n helo=smtp-out2.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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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 NULL pointer marker code applies only to VMS_ARRAY_OF_POINTER,\nwhere the size is never NULL. Move the setting of is_null under\nVMS_ARRAY_OF_POINTER, so we can stop checking the size.\n\nSigned-off-by: Fabiano Rosas <farosas@suse.de>\n---\nAFAICS, the size actually should never be NULL, but there are a few\nvmsds doing a hack with VMS_SINGLE. I can't be bothered to learn about\nit right now.\n---\n migration/vmstate.c | 6 +++---\n 1 file changed, 3 insertions(+), 3 deletions(-)", "diff": "diff --git a/migration/vmstate.c b/migration/vmstate.c\nindex 7edfa3d990..d7b1bc6b86 100644\n--- a/migration/vmstate.c\n+++ b/migration/vmstate.c\n@@ -635,15 +635,15 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMStateDescription *vmsd,\n for (i = 0; i < n_elems; i++) {\n void *curr_elem = first_elem + size * i;\n const VMStateField *inner_field;\n- bool use_marker_field, is_null;\n+ bool use_marker_field, is_null = false;\n int max_elems = n_elems - i;\n \n if (field->flags & VMS_ARRAY_OF_POINTER) {\n assert(curr_elem);\n curr_elem = *(void **)curr_elem;\n+ is_null = !curr_elem;\n }\n \n- is_null = (!curr_elem && size);\n use_marker_field = use_dynamic_array || is_null;\n \n if (use_marker_field) {\n@@ -672,7 +672,7 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMStateDescription *vmsd,\n \n for (int j = i + 1; j < n_elems; j++) {\n void *elem = *(void **)(first_elem + size * j);\n- bool elem_is_null = !elem && size;\n+ bool elem_is_null = !elem;\n \n if (is_null != elem_is_null) {\n max_elems = j - i;\n", "prefixes": [ "RFC", "v1", "03/17" ] }