{"id":2222990,"url":"http://patchwork.ozlabs.org/api/patches/2222990/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414080025.3005916-8-jamin_lin@aspeedtech.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","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":"<20260414080025.3005916-8-jamin_lin@aspeedtech.com>","list_archive_url":null,"date":"2026-04-14T08:00:34","name":"[v2,07/17] hw/usb/hcd-ehci: Add property to advertise 64-bit addressing capability","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"5ce9cbf96f1a1f7f57ed098c001bd04ca6dbd67e","submitter":{"id":81768,"url":"http://patchwork.ozlabs.org/api/people/81768/?format=json","name":"Jamin Lin","email":"jamin_lin@aspeedtech.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414080025.3005916-8-jamin_lin@aspeedtech.com/mbox/","series":[{"id":499795,"url":"http://patchwork.ozlabs.org/api/series/499795/?format=json","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/2222990/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222990/checks/","tags":{},"related":[],"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=aspeedtech.com header.i=@aspeedtech.com\n header.a=rsa-sha256 header.s=selector1 header.b=czReLdSo;\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)","dkim=none (message not signed)\n header.d=none;dmarc=none action=none header.from=aspeedtech.com;"],"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 4fvxZL3g88z1yDF\n\tfor ; Tue, 14 Apr 2026 18:02:00 +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 1wCYhd-0003eN-Sy; Tue, 14 Apr 2026 04:00:57 -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 )\n id 1wCYhb-0003bn-GH; Tue, 14 Apr 2026 04:00:55 -0400","from mail-koreacentralazlp170130006.outbound.protection.outlook.com\n ([2a01:111:f403:c40f::6] helo=SEYPR02CU001.outbound.protection.outlook.com)\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1wCYhZ-0005mG-Se; Tue, 14 Apr 2026 04:00:55 -0400","from TYPPR06MB8206.apcprd06.prod.outlook.com (2603:1096:405:383::19)\n by TYZPR06MB6745.apcprd06.prod.outlook.com (2603:1096:400:45a::14)\n with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.48; Tue, 14 Apr\n 2026 08:00:35 +0000","from TYPPR06MB8206.apcprd06.prod.outlook.com\n ([fe80::e659:1ead:77cb:f6d3]) by TYPPR06MB8206.apcprd06.prod.outlook.com\n ([fe80::e659:1ead:77cb:f6d3%3]) with mapi id 15.20.9769.046; Tue, 14 Apr 2026\n 08:00:34 +0000"],"ARC-Seal":"i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none;\n b=LNHvsCJWgjXaVWd9qLf4GIjyWF8QkN5Wi5hQLz8LtALiCh/0GN0yby7wk0py8PAfbdWjJ10rZltdy1WcpisDbVmCEsyMiag86YFLwPCF3GVKacE+6cA+WUm/X9NsmCWjKiyZ2/yZAb5YZ4eydUgyEosGH0hlsIkhVR+xStplUqwXioY9zooq11XcehWCDXEy2YNa3NCdgrTLa5kFqPDG2CtN9f0vYF9MJDozrVFf+Dggfn7PYoSzrAK6aa25Dd6K7LueOQk4gMzhLwb8/CfNVQT8bRcpv2Lyaftz30nXfKnxeA29IerZluGrI3vckUg/BqR41/FT2AbH/j2Vg2YfuQ==","ARC-Message-Signature":"i=1; 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=AUPW8ChXKsCgsbAjQSVjeZnlRz6pA1jlUQphP5cVbYw=;\n b=saQQ8JSs/scMuMxNpR10sT/Ccg5PNsVRBujFhdzY8UmDW6qo4qKXfe1RtyMvzQGWIk4GrjSV0mfI90JIlR3kChbznY9iykyUKOlyk/OS3FC7AHTRU88oczASadOkSXUkmOwc6jIhTmpvLBJ33yfSQ0Xfr8Dl06shk5nsWinU9kgBquiG1lLsoEgVH3r417pIekykQf9+pxVWGH6FUlBF91K9uzNUWg8Bs7kyZ2FKCLrJy4WBmhDztv3tzfOvGwo6WDZu62KUQhuat+4sf52N1pBaYAQInwhNmPIu7j9cvrFwG3gzGlH6JKGS1hwSOb/+Zg+q3frqAn2OlPngZeHCTw==","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=AUPW8ChXKsCgsbAjQSVjeZnlRz6pA1jlUQphP5cVbYw=;\n b=czReLdSolwtb0cz5baCT+Jg2PYnA5vXgaw9bKrwejBV80dp7rJcDQKreMEBqG83R7LOy/5xOgkNtREqxEcqkPgAdPxKCrYU67ZrPLUHz076QoYM3lvPtSIi+oLbJWEV3DBCiuCvGbfgX2Il4M/EdlpUEXbfr0V32+mrYYfOGyF41i8FjpYGe4qkUsCwyiXv2xXWkguqY/LVlTRM6S9DrdaQvNiTr2T+tqlJdowU8jWdYKi2FHk8075Lzyh//cEnvNAH/a4p0Pdd/1jcxG0EjetXq/Vm7fUoaJvUzgA6AOhQEd2NxVRZMkc6Vj/uwk77NMvvjLuBHFqG3NlHkhgXgfg==","From":"Jamin Lin ","To":"=?iso-8859-1?q?C=E9dric_Le_Goater?= ,\n Peter Maydell ,\n Steven Lee , Troy Lee ,\n Kane Chen ,\n Andrew Jeffery , Joel Stanley ,\n \"open list:ASPEED BMCs\" ,\n \"open list:All patches CC here\" ","CC":"Jamin Lin , Troy Lee ,\n \"flwu@google.com\" ,\n \"nabihestefan@google.com\" , =?iso-8859-1?q?C=E9dri?=\n\t=?iso-8859-1?q?c_Le_Goater?= ","Subject":"[PATCH v2 07/17] hw/usb/hcd-ehci: Add property to advertise 64-bit\n addressing capability","Thread-Topic":"[PATCH v2 07/17] hw/usb/hcd-ehci: Add property to advertise\n 64-bit addressing capability","Thread-Index":"AQHcy+TFdtAGW3rvZUye0YiGqef7VQ==","Date":"Tue, 14 Apr 2026 08:00:34 +0000","Message-ID":"<20260414080025.3005916-8-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=czReLdSo;\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)","dkim=none (message not signed)\n header.d=none;dmarc=none action=none header.from=aspeedtech.com;"],"x-ms-publictraffictype":"Email","x-ms-traffictypediagnostic":"TYPPR06MB8206:EE_|TYZPR06MB6745:EE_","x-ms-office365-filtering-correlation-id":"dfc2d845-3e11-49ad-3186-08de99fbe855","x-ms-exchange-senderadcheck":"1","x-ms-exchange-antispam-relay":"0","x-microsoft-antispam":"BCL:0;\n ARA:13230040|7416014|376014|366016|1800799024|38070700021|22082099003|56012099003|18002099003;","x-microsoft-antispam-message-info":"\n 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","x-forefront-antispam-report":"CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:;\n IPV:NLI; SFV:NSPM; H:TYPPR06MB8206.apcprd06.prod.outlook.com; PTR:; CAT:NONE;\n SFS:(13230040)(7416014)(376014)(366016)(1800799024)(38070700021)(22082099003)(56012099003)(18002099003);\n DIR:OUT; SFP:1102;","x-ms-exchange-antispam-messagedata-chunkcount":"1","x-ms-exchange-antispam-messagedata-0":"=?iso-8859-1?q?LjE+nfgPxbhdlFdHQ9dt1sG?=\n\t=?iso-8859-1?q?yZGsablbz05KN1iDlXxeiFPDeb3FefDPYFBoFpuuW+jZkxMk+ifL4AaSKmd7?=\n\t=?iso-8859-1?q?+V4R6jiXERXV+EhU5yLLDG0IBETYAkA85m52bFZ/vjvDQjtnOSy9V6gjVflV?=\n\t=?iso-8859-1?q?khINM5Ptf/N1oCqCbgy9rR2gymMi47aDlxfq7QTUS7EPkp+ySttKIZNGQsIC?=\n\t=?iso-8859-1?q?g9/N8wnwlPWzFaswx57mD9Ies89WV7fAB+rSAowgGCZ2IAlNFv4WmRf0s2M2?=\n\t=?iso-8859-1?q?wG4Ez+J0gS5vhy95sGNQHkoY5V64TbWcv2IjSr9fXLmCo8qGxn3k1s93o4TH?=\n\t=?iso-8859-1?q?Q9+1dShlLKNfBDZD6dI5CiaZaptoTAhfQYtstVPaIwtof23rDtUkuRLOLUOh?=\n\t=?iso-8859-1?q?XZD/eIvlsN5OKFXzBzjlMpgSCFyrlv9Jwm+OG1gkHtVgwuMmffc2NKpZkBCJ?=\n\t=?iso-8859-1?q?hn8IHxA8DQjaZnAcSgS5aFgQ7pwoBLy1xasRKWnjbAetRV1yAHw5u/zlvuHK?=\n\t=?iso-8859-1?q?HtbXrtYg9Zu2h6/j87OVJU7RaUDQ+3Ya2r9GAoRrO2JxdA5d9i5Dpnzy82Z6?=\n\t=?iso-8859-1?q?lPlBojzTwsKThBRkp7UG9D1I1H9e4Un4dVjURqGuXkG0764fjMUIpqgmft1E?=\n\t=?iso-8859-1?q?6v3PTX9aW0ERoD7X3FACvHDzfPbWUaPtSoZzQ9PfUMd+RwJ3jICeBFAqO/Cp?=\n\t=?iso-8859-1?q?VYdiG2RY6UsKMQfi+P6q/+X9XpBARNZBScI625YU1FjAevscWxkHDJEAmj2A?=\n\t=?iso-8859-1?q?1ti7I16Az33VyRG5VxeJqT4ob+7oN5rMPmbyDxm9ql1wrcsYvkDZmoRuUsDS?=\n\t=?iso-8859-1?q?emxr0NbuDYwDzR2MXu6tAnrXPk8VLZvhYGLeZykcbuzTGVLpJcNK3pbvDglz?=\n\t=?iso-8859-1?q?auSc2bxEd7+i1yl+HuZoPzYizGXYtNwXv0Qm8iLVTyATnuTiSnn09B2zuKZW?=\n\t=?iso-8859-1?q?cdLszKyePGplQfylREMnZZzMwTbQiiqJSm0N1MVv3WEJNIkrIPfIOguasuG/?=\n\t=?iso-8859-1?q?mRJOi8XVTNuAszG1p1ebL1h5sYN65F4SsOBNCA3CaAUqwQ4dLmiYRUEaBXy6?=\n\t=?iso-8859-1?q?gi7AtVhP5y7tnbuDOHq2BwdnHbM5BOI6IFyvb0Osg4u/Cw9pb7VS0oc//MMV?=\n\t=?iso-8859-1?q?jLhWCCKlbwgjZ44PC+7/kZwJu8tiWwfzRRbVom0zOhe8icwoOGHQvycotBiq?=\n\t=?iso-8859-1?q?cDcns8O/o6tzj31NpVJzs5ruPcF2SsHOKWCpuqnTs6MXeF0W5HhoK63jVMrT?=\n\t=?iso-8859-1?q?gFfSh2M/Ix7LMbHvv5nPz2Y6JdDFph//NFyTFUGokqodFGHsohPZxjOjP85W?=\n\t=?iso-8859-1?q?vBLXgQ46xCGNdAJXYX3+VugNt3PP02V8X48/YuHRK4oFs6Hl41M3f7Z0lJUU?=\n\t=?iso-8859-1?q?zGKbFXtfFUo7TH7XZqC6EC4RD+ApBgXA309ieLbc++2ons1eMb2bc0KoN2Y4?=\n\t=?iso-8859-1?q?hy/jBQugKKz+3+uzBhIm5nqz2RODEZGRPAXztkrlyibpWjEIhrY9cJyd3fyg?=\n\t=?iso-8859-1?q?g95bbozwAjzbgp/WKQe+62LsjcxupVOBtn+NBtZ70vVtUf5rVAhM6uwuOv60?=\n\t=?iso-8859-1?q?Cn5VH0p9Mgd/+ck+WgmIWz4cPZzADynN0myNszy/79lOowaLfCuw0QoNw9kM?=\n\t=?iso-8859-1?q?zwK6XHDTy+xW5QrigPL1h2++5EXEdpn2cIPmimW6lGCzCYTp8kDgjtIETKHt?=\n\t=?iso-8859-1?q?op/PkdioDchMa63/gzzP+bKknsjN2mmxJkpcToc+1qS0GI3KYSGLYZJu85ZW?=\n\t=?iso-8859-1?q?YKFhK0Vczp3omVUVraGqzc2K7wTXgpyfdzo8XEIgZgTPbRQ=3D=3D?=","Content-Type":"text/plain; charset=\"iso-8859-1\"","Content-Transfer-Encoding":"quoted-printable","MIME-Version":"1.0","X-Exchange-RoutingPolicyChecked":"\n qUTbLYLnQ/1z3ePl7bVYUnQMKhLB0t8ieWjbvN7ISdMFgGepbdsYpIxAwRj9NYyuURe6L9xRxEWfIMYuxxQgbIHmONemG1AZ2utkt8neidihYjdCybVTay57SUCRVUJh8uXKxmatKU0rmuvBcoKBNYDRMlYEkKHyWypgV+OHbiuOxVwL+u2h58Im0WCJ/XhZTqAxtLJMVrTSpGTokfGXjOHMyuxbRrTr0zeJhhEFnZowybCKM7PerUfbRC+IGAMTnSH9L8BddLV2911bMIry3Uw8LOFIPr7wDxzO7fIzkGoZ44cFLZzkoEl1fruTtBg0tzbbTKxe+pzTQEUOrcTcDQ==","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 dfc2d845-3e11-49ad-3186-08de99fbe855","X-MS-Exchange-CrossTenant-originalarrivaltime":"14 Apr 2026 08:00:34.6455 (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 jbpvdjauO8aXz6t5qcOAhl4tkBJM1AjSVqdZxObaeHPBA+QrMXmCTy3MbTOt7RY9awn1VDRxaJA9NfJVIp4UQlLCbtZA/ftiVryN0MLBito=","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 ","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"},"content":"Introduce a new boolean property, \"caps-64bit-addr\", to control\nHCCPARAMS[0] (64-bit Addressing Capability).\n\nWhen enabled, the EHCI controller advertises support for 64-bit\naddress memory pointers as defined in the EHCI specification\n(Table 2-7, HCCPARAMS). This allows software to use the 64-bit\ndata structure formats described in Appendix B.\n\nWhen disabled (default), the controller reports 32-bit addressing\ncapability and uses the standard 32-bit data structures.\n\nSigned-off-by: Jamin Lin \nReviewed-by: Cédric Le Goater \n---\n hw/usb/hcd-ehci.h | 1 +\n hw/usb/hcd-ehci-pci.c | 2 ++\n hw/usb/hcd-ehci-sysbus.c | 2 ++\n hw/usb/hcd-ehci.c | 5 ++++-\n 4 files changed, 9 insertions(+), 1 deletion(-)","diff":"diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h\nindex 24eea9d23b..fe4c508c32 100644\n--- a/hw/usb/hcd-ehci.h\n+++ b/hw/usb/hcd-ehci.h\n@@ -256,6 +256,7 @@ struct EHCIState {\n \n /* properties */\n uint32_t maxframes;\n+ bool caps_64bit_addr;\n \n /*\n * EHCI spec version 1.0 Section 2.3\ndiff --git a/hw/usb/hcd-ehci-pci.c b/hw/usb/hcd-ehci-pci.c\nindex 9febcc1031..2ea8549db9 100644\n--- a/hw/usb/hcd-ehci-pci.c\n+++ b/hw/usb/hcd-ehci-pci.c\n@@ -137,6 +137,8 @@ static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr,\n \n static const Property ehci_pci_properties[] = {\n DEFINE_PROP_UINT32(\"maxframes\", EHCIPCIState, ehci.maxframes, 128),\n+ DEFINE_PROP_BOOL(\"caps-64bit-addr\", EHCIPCIState, ehci.caps_64bit_addr,\n+ false),\n };\n \n static const VMStateDescription vmstate_ehci_pci = {\ndiff --git a/hw/usb/hcd-ehci-sysbus.c b/hw/usb/hcd-ehci-sysbus.c\nindex b31032bbf3..61215e9f3d 100644\n--- a/hw/usb/hcd-ehci-sysbus.c\n+++ b/hw/usb/hcd-ehci-sysbus.c\n@@ -34,6 +34,8 @@ static const Property ehci_sysbus_properties[] = {\n DEFINE_PROP_UINT32(\"maxframes\", EHCISysBusState, ehci.maxframes, 128),\n DEFINE_PROP_BOOL(\"companion-enable\", EHCISysBusState, ehci.companion_enable,\n false),\n+ DEFINE_PROP_BOOL(\"caps-64bit-addr\", EHCISysBusState, ehci.caps_64bit_addr,\n+ false),\n };\n \n static void usb_ehci_sysbus_realize(DeviceState *dev, Error **errp)\ndiff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c\nindex 315e8813f5..e3bff8e518 100644\n--- a/hw/usb/hcd-ehci.c\n+++ b/hw/usb/hcd-ehci.c\n@@ -2532,6 +2532,9 @@ void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)\n s->maxframes);\n return;\n }\n+ if (s->caps_64bit_addr) {\n+ s->caps[0x08] |= BIT(0);\n+ }\n \n memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);\n memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);\n@@ -2591,7 +2594,7 @@ void usb_ehci_init(EHCIState *s, DeviceState *dev)\n s->caps[0x05] = 0x00; /* No companion ports at present */\n s->caps[0x06] = 0x00;\n s->caps[0x07] = 0x00;\n- s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */\n+ s->caps[0x08] = 0x80; /* We can cache whole frame */\n s->caps[0x0a] = 0x00;\n s->caps[0x0b] = 0x00;\n \n","prefixes":["v2","07/17"]}