Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/1.1/patches/2230528/?format=api
{ "id": 2230528, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230528/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429135717.3048713-8-joshualant@gmail.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260429135717.3048713-8-joshualant@gmail.com>", "date": "2026-04-29T13:48:41", "name": "[RFC,QEMU,07/10] cxl-downstream-port: Add support for VCS switching", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5b613c1789f0d005d0b3cf46289ce2ac5065faea", "submitter": { "id": 93283, "url": "http://patchwork.ozlabs.org/api/1.1/people/93283/?format=api", "name": "Joshua Lant", "email": "joshualant@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429135717.3048713-8-joshualant@gmail.com/mbox/", "series": [ { "id": 502144, "url": "http://patchwork.ozlabs.org/api/1.1/series/502144/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502144", "date": "2026-04-29T13:48:40", "name": "Initial Support for VCS Switching", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/502144/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230528/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230528/checks/", "tags": {}, "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 (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=jsKAgWbl;\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 4g5Sy12CrHz1xqf\n\tfor <incoming@patchwork.ozlabs.org>; Thu, 30 Apr 2026 06:07:05 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wIB7w-0003WU-CT; Wed, 29 Apr 2026 16:03:20 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <joshualant@gmail.com>)\n id 1wI5QX-0008KF-DE\n for qemu-devel@nongnu.org; Wed, 29 Apr 2026 09:58:12 -0400", "from mail-wm1-x335.google.com ([2a00:1450:4864:20::335])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <joshualant@gmail.com>)\n id 1wI5QU-0007iW-EQ\n for qemu-devel@nongnu.org; Wed, 29 Apr 2026 09:58:08 -0400", "by mail-wm1-x335.google.com with SMTP id\n 5b1f17b1804b1-48334ee0aeaso128830365e9.1\n for <qemu-devel@nongnu.org>; Wed, 29 Apr 2026 06:58:05 -0700 (PDT)", "from node1.manccluster.local (revolution.cs.man.ac.uk.\n [130.88.198.135]) by smtp.gmail.com with ESMTPSA id\n ffacd0b85a97d-447b3d48517sm5205950f8f.5.2026.04.29.06.58.03\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Wed, 29 Apr 2026 06:58:03 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=gmail.com; s=20251104; t=1777471084; x=1778075884; darn=nongnu.org;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:from:to:cc:subject:date\n :message-id:reply-to;\n bh=dPS8B/0ftELxPYBJPOi/Jw2N6PyAu4qwVtoZHd48FII=;\n b=jsKAgWblGo17yKNZPtv6njNOEEO1oQbqEahzK8KLNZs/W38NLxT5Q7LYTylPMQqn/w\n mRKVR9F7e/gQAx+hdHDH+IX32ZlVDMzJUi7AzLiLkK1FkkLmCDXCg72Yp1/kJN9ooZ+b\n 6GoK6jfzUO15SZQsyZ7jd+dPI6HLU6b/q8ISoz4ZSbxBKSVzX/A555QOMIc9w4kXFJs+\n MzltzdLsTgZuanKJ4jox4a5wXuF6MZm3NJnOu0cMlbWHucQcKQZ77sWpTJf8Sxz/6KsE\n C9kcCJmOuvjQLXN+PuGQtIOM6Hyt9UwYfQIN09tL7bhko7fR5gkDdppOIP4KsoVAYtvp\n MVOQ==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1777471084; x=1778075884;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from\n :to:cc:subject:date:message-id:reply-to;\n bh=dPS8B/0ftELxPYBJPOi/Jw2N6PyAu4qwVtoZHd48FII=;\n b=jPJMHyZq4dIZJToPN/b9uLu643kf5YUtngxFgOexarUBMvFzxXch1Wv6l6ppaa1zpx\n ZoznHsVEja176tniC2Yvm1dpH5v5GE+Osy9DPz164eRZO+8mgXnJueSzLTH+RnyvSsep\n FmtE9lD/ySYgXJ4C1Lm0iLLgBDn4mk/Mf12lC3C8+k5ZsNbbFFy6r66zGpUs+ko+IhsR\n AvOJY86eQ/dE6cfGso3OkzeL0R+PEW3qFxXid2o0wTKgdwzPvqfc4Zv13Kn3tphFuSdE\n dkbr585eYbKI56ONa/ThWARDiYyQ5wpJ+8PR9Mdcsm17j4khFZqqvcHb9MEiTuIm3dQ8\n TvfA==", "X-Gm-Message-State": "AOJu0Yy5kfkklPG/TPr0LRQxEi8vCL1Oii5qHR/b+k7QIGOvj1ziECuQ\n i7vwZP6m0we8L4QjaLBSNb9vFs9xScjDn3qxuQ2/0t70+sG4ho7pLaxY", "X-Gm-Gg": "AeBDieukf8ZDui0sX2Nkg0UXum4BzS0ftVDqLkgCV3oYM9HTAw+gNAHTX+nCWbzWUAk\n S+xzG9BwOgg1vEJWrtJaHWJvKVbehLElG+Jz8ppQJeVE2CYy3gW1j7SHCLHOUgbUxBwMHPgBKZj\n +FEKHEGQTQyGMnGW2Yvg+BqXbGOfPdQMnnnUW7maXmgv1MAdFzCDmXgBRi1abxZklDfGEGohsvA\n q3bLGs/riLXfx5UTKsPWTEJyPlqMfzm+CGjC0R9NGf/QPHEU8qlfihBfRey77Js41DspWL+GbX8\n VrhM74t9OTEj2udps+EdRUsiXy11ChABS2M8iKgXo16yM8+gLJbc9oqqYtLty4EjIulYits9oQy\n rcFhySbVTsV00Y/6NV9Duqun2v8sQR47kmmmLWPTMEamfvklo1nzc3DH7VqeNkJr5RQH8g0Ovh7\n rDWpEJYVBgJo86RGjBRt241eNFv0QUNZB9u1IVcGMEaxWrmFdfU6mbrTuEnrMth7C6qu2Q9q2i", "X-Received": "by 2002:a05:600c:c4a3:b0:488:fd7e:1063 with SMTP id\n 5b1f17b1804b1-48a7b54eb83mr71355305e9.29.1777471084202;\n Wed, 29 Apr 2026 06:58:04 -0700 (PDT)", "From": "Joshua Lant <joshualant@gmail.com>", "To": "linux-cxl@vger.kernel.org", "Cc": "qemu-devel@nongnu.org, Jonathan.Cameron@huawei.com,\n arpit1.kumar@samsung.com, Joshua Lant <joshualant@gmail.com>", "Subject": "[RFC QEMU PATCH 07/10] cxl-downstream-port: Add support for VCS\n switching", "Date": "Wed, 29 Apr 2026 14:48:41 +0100", "Message-ID": "<20260429135717.3048713-8-joshualant@gmail.com>", "X-Mailer": "git-send-email 2.47.3", "In-Reply-To": "<20260429135717.3048713-1-joshualant@gmail.com>", "References": "<20260429135717.3048713-1-joshualant@gmail.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::335;\n envelope-from=joshualant@gmail.com; helo=mail-wm1-x335.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, FREEMAIL_FROM=0.001,\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-Mailman-Approved-At": "Wed, 29 Apr 2026 16:03:16 -0400", "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": "When a downstream port is connnected to an upstream port which is\ndefined as a VCS within a cxl-vcs-switch, the port will automatically be\ninstantiated as a VPPB within that VCS. This downstream port will then\nappear normally to the guest, but can be connected to a real downstream\nPPB at runtime when the switch is issued a bind command by the Fabric\nManager.\n\nSigned-off-by: Joshua Lant <joshualant@gmail.com>\n---\n hw/pci-bridge/cxl_downstream.c | 11 +++++++++++\n 1 file changed, 11 insertions(+)", "diff": "diff --git a/hw/pci-bridge/cxl_downstream.c b/hw/pci-bridge/cxl_downstream.c\nindex 5322c46900..5e7ce6410d 100644\n--- a/hw/pci-bridge/cxl_downstream.c\n+++ b/hw/pci-bridge/cxl_downstream.c\n@@ -14,11 +14,14 @@\n #include \"hw/pci/pcie.h\"\n #include \"hw/pci/pcie_port.h\"\n #include \"hw/pci-bridge/cxl_downstream_port.h\"\n+#include \"hw/pci-bridge/cxl_upstream_port.h\"\n #include \"hw/qdev-properties.h\"\n #include \"hw/qdev-properties-system.h\"\n #include \"hw/cxl/cxl.h\"\n #include \"hw/cxl/cxl_port.h\"\n #include \"qapi/error.h\"\n+#include \"hw/cxl/cxl_vcs_switch.h\"\n+\n \n typedef struct CXLDownstreamPort {\n /*< private >*/\n@@ -199,6 +202,14 @@ static void cxl_dsp_realize(PCIDevice *d, Error **errp)\n PCI_BASE_ADDRESS_MEM_TYPE_64,\n component_bar);\n \n+ PCIDevice *parent = pci_bridge_get_device(pci_get_bus(PCI_DEVICE(d)));\n+ if (parent && object_dynamic_cast(OBJECT(parent), TYPE_CXL_USP)) {\n+ CXLUpstreamPort *usp = CXL_USP(parent);\n+ if (usp->vcs_name) {\n+ cxl_vcs_register_vppb(usp->swcci.vcs, usp, dsp, errp);\n+ }\n+ }\n+\n return;\n \n err_chassis:\n", "prefixes": [ "RFC", "QEMU", "07/10" ] }