[{"id":3682934,"web_url":"http://patchwork.ozlabs.org/comment/3682934/","msgid":"","list_archive_url":null,"date":"2026-04-27T20:06:55","subject":"Re: [PATCH 41/41] qtest: add \"qom-tests\" command","submitter":{"id":5111,"url":"http://patchwork.ozlabs.org/api/people/5111/","name":"Peter Maydell","email":"peter.maydell@linaro.org"},"content":"On Mon, 27 Apr 2026 at 20:50, Marc-André Lureau\n wrote:\n>\n> Add a new \"qom-tests\" to exercise basic object lifecycle. Instantiate\n> all non-abstract objects, get and set properties and unref.\n>\n> This should quickly find leaks and other related issues that are\n> eventually triggerable at run-time with QMP qom commands.\n\nCan we have a comment please that says what you think the\nbasic object lifecycle is?\n\nAlso, the qom-test already has coverage of \"init the object,\nintrospect its properties, unref it\" -- how does this differ?\nDoes it duplicate parts of it? (qom-test is already a very\nslow test so we don't want to duplicate work if we can avoid it.)\n\n-- PMM","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=qPbUaJgz;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g4F3w0qzfz1yHX\n\tfor ; Tue, 28 Apr 2026 06:07:56 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wHSF8-0005hp-UC; 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Mon, 27 Apr 2026\n 13:07:08 -0700 (PDT)","MIME-Version":"1.0","References":"<20260427-qom-tests-v1-0-c413f3605311@redhat.com>\n <20260427-qom-tests-v1-41-c413f3605311@redhat.com>","In-Reply-To":"<20260427-qom-tests-v1-41-c413f3605311@redhat.com>","From":"Peter Maydell ","Date":"Mon, 27 Apr 2026 21:06:55 +0100","X-Gm-Features":"AVHnY4LCWLL58TeycfO7g1mW80IJnQkVTMeSNMy2Mx9VI966I-9ViZbIV21LtOg","Message-ID":"\n ","Subject":"Re: [PATCH 41/41] qtest: add \"qom-tests\" command","To":"=?utf-8?q?Marc-Andr=C3=A9_Lureau?= ","Cc":"qemu-devel@nongnu.org, armbru@redhat.com, Fabiano Rosas ,\n Laurent Vivier , Paolo Bonzini ,\n\t=?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= ","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","Received-SPF":"pass client-ip=2607:f8b0:4864:20::b12e;\n envelope-from=peter.maydell@linaro.org; helo=mail-yx1-xb12e.google.com","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,\n RCVD_IN_DNSWL_NONE=-0.0001, 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 ","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"}},{"id":3683146,"web_url":"http://patchwork.ozlabs.org/comment/3683146/","msgid":"","list_archive_url":null,"date":"2026-04-28T06:37:39","subject":"Re: [PATCH 41/41] qtest: add \"qom-tests\" command","submitter":{"id":66774,"url":"http://patchwork.ozlabs.org/api/people/66774/","name":"Marc-André Lureau","email":"marcandre.lureau@redhat.com"},"content":"Hi Peter\n\nOn Tue, Apr 28, 2026 at 12:08 AM Peter Maydell wrote:\n>\n> On Mon, 27 Apr 2026 at 20:50, Marc-André Lureau\n> wrote:\n> >\n> > Add a new \"qom-tests\" to exercise basic object lifecycle. Instantiate\n> > all non-abstract objects, get and set properties and unref.\n> >\n> > This should quickly find leaks and other related issues that are\n> > eventually triggerable at run-time with QMP qom commands.\n>\n> Can we have a comment please that says what you think the\n> basic object lifecycle is?\n\nHmm, what is not clear about the comment above and its list?\n\n> Also, the qom-test already has coverage of \"init the object,\n> introspect its properties, unref it\" -- how does this differ?\n\nIt does introspect on already living and reachable objects, over QMP.\nIt doesn't instantiate, set, or unref.\n\n> Does it duplicate parts of it? (qom-test is already a very\n> slow test so we don't want to duplicate work if we can avoid it.)\n\nI wouldn't say they overlap much. I wrote it as a qtest command to\nmake the test relatively fast (~100ms per target), and easy to invoke\non CLI (-qtest stdio <<< qom-tests). Its purpose is not to exercise\nQMP. I agree though that adding a 1-2 seconds to CI is costly. We may\nrun it under g_test_thorough().","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=google header.b=UY5imZSL;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g4W3s0ZYWz1yHX\n\tfor ; Tue, 28 Apr 2026 16:38:47 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wHc4z-0002Rf-PT; 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Mon, 27 Apr 2026\n 23:37:52 -0700 (PDT)","MIME-Version":"1.0","References":"<20260427-qom-tests-v1-0-c413f3605311@redhat.com>\n <20260427-qom-tests-v1-41-c413f3605311@redhat.com>\n ","In-Reply-To":"\n ","From":"=?utf-8?q?Marc-Andr=C3=A9_Lureau?= ","Date":"Tue, 28 Apr 2026 10:37:39 +0400","X-Gm-Features":"AVHnY4KtHkkKhqGGlbiImDkCZp65HO3_QH_LyvmTsE4f-uGytyjE2xsjDe5YpzI","Message-ID":"\n ","Subject":"Re: [PATCH 41/41] qtest: add \"qom-tests\" command","To":"Peter Maydell ","Cc":"qemu-devel@nongnu.org, armbru@redhat.com, Fabiano Rosas ,\n Laurent Vivier , Paolo Bonzini ,\n\t=?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= ","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","Received-SPF":"pass client-ip=2607:f8b0:4864:20::1329;\n envelope-from=marcandre.lureau@gmail.com; helo=mail-dy1-x1329.google.com","X-Spam_score_int":"-16","X-Spam_score":"-1.7","X-Spam_bar":"-","X-Spam_report":"(-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001,\n FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=no 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"}},{"id":3683208,"web_url":"http://patchwork.ozlabs.org/comment/3683208/","msgid":"","list_archive_url":null,"date":"2026-04-28T07:48:50","subject":"Re: [PATCH 41/41] qtest: add \"qom-tests\" command","submitter":{"id":5111,"url":"http://patchwork.ozlabs.org/api/people/5111/","name":"Peter Maydell","email":"peter.maydell@linaro.org"},"content":"On Tue, 28 Apr 2026 at 07:37, Marc-André Lureau\n wrote:\n>\n> Hi Peter\n>\n> On Tue, Apr 28, 2026 at 12:08 AM Peter Maydell wrote:\n> >\n> > On Mon, 27 Apr 2026 at 20:50, Marc-André Lureau\n> > wrote:\n> > >\n> > > Add a new \"qom-tests\" to exercise basic object lifecycle. Instantiate\n> > > all non-abstract objects, get and set properties and unref.\n> > >\n> > > This should quickly find leaks and other related issues that are\n> > > eventually triggerable at run-time with QMP qom commands.\n> >\n> > Can we have a comment please that says what you think the\n> > basic object lifecycle is?\n>\n> Hmm, what is not clear about the comment above and its list?\n\nIt's quite brief and it's not in the actual source file.\nMore generally, there is a lifecycle for the basic QOM types,\nand a more complicated one for QOM types that happen to be\nqdev devices, some of which we are testing already. I think\nwe are not very good with documentation of what we expect\nfrom QOM objects lifecycle-wise, so I think it's helpful to\nbe more explicit and detailed rather than less.\n\n> > Also, the qom-test already has coverage of \"init the object,\n> > introspect its properties, unref it\" -- how does this differ?\n>\n> It does introspect on already living and reachable objects, over QMP.\n> It doesn't instantiate, set, or unref.\n\nAh, sorry; I was getting this confused with device-introspect-test,\nwhich uses QMP and does a 'qom-list-types' to get all the\nQOM types QEMU knows about, and then does a 'device-list-properties',\nwhich implicitly will create the object with instance_init and then\nfinalize it afterwards.\n\nthanks\n-- PMM","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=ogPYf5aa;\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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