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GET /api/patches/2222999/?format=api
{ "id": 2222999, "url": "http://patchwork.ozlabs.org/api/patches/2222999/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414080025.3005916-9-jamin_lin@aspeedtech.com/", "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": "<20260414080025.3005916-9-jamin_lin@aspeedtech.com>", "list_archive_url": null, "date": "2026-04-14T08:00:35", "name": "[v2,08/17] hw/usb/hcd-ehci: Reject CTRLDSSEGMENT writes without 64-bit capability", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "51430a696438c922fcf5c341b976770c1f9f0456", "submitter": { "id": 81768, "url": "http://patchwork.ozlabs.org/api/people/81768/?format=api", "name": "Jamin Lin", "email": "jamin_lin@aspeedtech.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414080025.3005916-9-jamin_lin@aspeedtech.com/mbox/", "series": [ { "id": 499795, "url": "http://patchwork.ozlabs.org/api/series/499795/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499795", "date": "2026-04-14T08:00:26", "name": "hw/usb/ehci: Add 64-bit descriptor addressing support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/499795/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222999/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222999/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 (2048-bit key;\n unprotected) header.d=aspeedtech.com header.i=@aspeedtech.com\n header.a=rsa-sha256 header.s=selector1 header.b=YavMIYNf;\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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a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;\n s=arcselector10001;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1;\n bh=aU8IkWc7WfKzrDM3ZBQ+aMW/imqYQd9QOl9MxOe/UGs=;\n b=KOj0EVbqeQbLZP1f8Tn9DXSu9RxBSKtYuQWkmOWA1Gnd5TJeporIWCJ3R48WR+7n/c9kI7my+7ZQ+M5KRUesgw6JeS5IrfINVLWEOQz84fZRbmW0KxAE1Mzxn+8ZBOdAaIUfjDWXDVmRsH/gFVChf9kti9iy9u1MOJCOMKBbPjw4rwjtMDPsCTAD5UXLAgFHmH3rna08nQkvpO9Xm87QrCl2Xy6uFvYcfYKl6cplqJFq2cK4kH9ZrlU5MvCps3ZlywkSMSgdh99ZDOTmdBBmVUEa2S8yv7QQaYfxeubabezPPpw3epIT3pxOs2wCIa/jnmZUUMnxzn2F8FDPApLclA==", "ARC-Authentication-Results": "i=1; mx.microsoft.com 1; spf=pass\n smtp.mailfrom=aspeedtech.com; dmarc=pass action=none\n header.from=aspeedtech.com; dkim=pass header.d=aspeedtech.com; arc=none", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=aspeedtech.com;\n s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=aU8IkWc7WfKzrDM3ZBQ+aMW/imqYQd9QOl9MxOe/UGs=;\n b=YavMIYNfyKZrL36x6M9ox0XXDpsjQrkac7uDufN7a4vMKWrgbMSnwxdxBHcMosaWJrlaJr1qVB8MszqManm72ES9IfNmf9kCqrPJD3yJE2nHaMbPPSmvHwhFnfgMMFyEJp6AeH69nx8Rz4odequTn3lO+GiqWUP/5Mh+T+sCciG4GjxKuRQmMqBvIm2+PwOMOciLWxjsUdz+MY3fqjrnVvmukNSx3fYi936PyMiJ2nIAIth2IGga/gEJ2oZdG4mq3FVl5cR0PsGoX4iz3cUd2Qe7F38BZOvfZ+lNnVl0cF+0d3xCGF7YLidkAS0P5DQSVFPNEV6yOXmWJUeqhGNK6A==", "From": "Jamin Lin <jamin_lin@aspeedtech.com>", "To": "=?iso-8859-1?q?C=E9dric_Le_Goater?= <clg@kaod.org>,\n Peter Maydell <peter.maydell@linaro.org>,\n Steven Lee <steven_lee@aspeedtech.com>, Troy Lee <leetroy@gmail.com>,\n Kane Chen <kane_chen@aspeedtech.com>,\n Andrew Jeffery <andrew@codeconstruct.com.au>, Joel Stanley <joel@jms.id.au>,\n \"open list:ASPEED BMCs\" <qemu-arm@nongnu.org>,\n \"open list:All patches CC here\" <qemu-devel@nongnu.org>", "CC": "Jamin Lin <jamin_lin@aspeedtech.com>, Troy Lee <troy_lee@aspeedtech.com>,\n \"flwu@google.com\" <flwu@google.com>, \"nabihestefan@google.com\"\n <nabihestefan@google.com>", "Subject": "[PATCH v2 08/17] hw/usb/hcd-ehci: Reject CTRLDSSEGMENT writes without\n 64-bit capability", "Thread-Topic": "[PATCH v2 08/17] hw/usb/hcd-ehci: Reject CTRLDSSEGMENT writes\n without 64-bit capability", "Thread-Index": "AQHcy+TG7IgZ0tbh9EGKhlnAj2UbFQ==", "Date": "Tue, 14 Apr 2026 08:00:35 +0000", "Message-ID": "<20260414080025.3005916-9-jamin_lin@aspeedtech.com>", "References": "<20260414080025.3005916-1-jamin_lin@aspeedtech.com>", "In-Reply-To": "<20260414080025.3005916-1-jamin_lin@aspeedtech.com>", "Accept-Language": "zh-TW, en-US", "Content-Language": "en-US", "X-MS-Has-Attach": "", "X-MS-TNEF-Correlator": "", "authentication-results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=aspeedtech.com header.i=@aspeedtech.com\n header.a=rsa-sha256 header.s=selector1 header.b=YavMIYNf;\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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charset=\"iso-8859-1\"", "Content-Transfer-Encoding": "quoted-printable", "MIME-Version": "1.0", "X-Exchange-RoutingPolicyChecked": "\n r3zpIWIYoy41LzXldVmpY+/7Ruli4obMmlzOz/UiYhsyWR6eFs94psd78cZTVOoFBJkisrau3Zpf9LKK/XYTXkWGp//ya3Nmlri6MVcuXEf4x152fDHSRvdV6ZhKiu2240viiPF0cY1CcTOFpkAhwNUyQCYWSTTcm8vZyuug2U2lU0I3QRqV9oZzvVyPh+Ovf3aKhY4LqwBhxLolZePjEcMC+uif0gcbQRbQsYwluO5TfDw/6oYMKvOX2wTmhUCNQWk3zYU0/0ifg3c/UWG+4Y1wJJcf0IBOo89t1MtMjPmLN3zm01LBCtCr9wvzj4fvWhwryyJ21CH635SLYKosYg==", "X-OriginatorOrg": "aspeedtech.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-AuthSource": "TYPPR06MB8206.apcprd06.prod.outlook.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 380b9096-beaa-47ff-ae7c-08de99fbe936", "X-MS-Exchange-CrossTenant-originalarrivaltime": "14 Apr 2026 08:00:35.7570 (UTC)", "X-MS-Exchange-CrossTenant-fromentityheader": "Hosted", "X-MS-Exchange-CrossTenant-id": "43d4aa98-e35b-4575-8939-080e90d5a249", "X-MS-Exchange-CrossTenant-mailboxtype": "HOSTED", "X-MS-Exchange-CrossTenant-userprincipalname": "\n b6oxE8oLHeqlIzdWBs0xvOEFpXX5xyd3+uR7Xw8DcYDNo7J14HBWJsUKQaXPWmoDUt7ApddfTTOg0AvTpBkKrAt7VyhwtRYSRzBIVx6enmo=", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "TYZPR06MB6745", "Received-SPF": "pass client-ip=2a01:111:f403:c40f::6;\n envelope-from=jamin_lin@aspeedtech.com;\n helo=SEYPR02CU001.outbound.protection.outlook.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 SPF_HELO_PASS=-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 EHCI CTRLDSSEGMENT register provides the upper 32 bits [63:32] used to\nform 64-bit addresses for EHCI control data structures. Per EHCI 1.0\nspec section 2.3.5, when the HCCPARAMS 64-bit Addressing Capability bit\nis zero, CTRLDSSEGMENT is not used: software cannot write it and reads\nmust return zero.\n\nAdd a capability check in the operational register write handler and\nreject guest writes to CTRLDSSEGMENT when 64-bit addressing is\nnot enabled.\n\nSigned-off-by: Jamin Lin <jamin_lin@aspeedtech.com>\n---\n hw/usb/hcd-ehci.c | 9 ++++++++-\n 1 file changed, 8 insertions(+), 1 deletion(-)", "diff": "diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c\nindex e3bff8e518..54a1a6f7f3 100644\n--- a/hw/usb/hcd-ehci.c\n+++ b/hw/usb/hcd-ehci.c\n@@ -1108,7 +1108,14 @@ static void ehci_opreg_write(void *ptr, hwaddr addr,\n \" is enabled and HC is enabled\\n\");\n }\n break;\n-\n+ case CTRLDSSEGMENT:\n+ if (!s->caps_64bit_addr) {\n+ qemu_log_mask(LOG_GUEST_ERROR,\n+ \"ehci: write to CTRLDSSEGMENT while \"\n+ \" 64-bit addressing capability is disabled\\n\");\n+ return;\n+ }\n+ break;\n case ASYNCLISTADDR:\n if (ehci_async_enabled(s)) {\n qemu_log_mask(LOG_GUEST_ERROR,\n", "prefixes": [ "v2", "08/17" ] }