From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41386C54E51 for ; Tue, 27 Feb 2024 08:45:45 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A27C26B02B9; Tue, 27 Feb 2024 03:45:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 9DAEA6B02BA; Tue, 27 Feb 2024 03:45:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 803B16B02BB; Tue, 27 Feb 2024 03:45:44 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 6C9BF6B02B9 for ; Tue, 27 Feb 2024 03:45:44 -0500 (EST) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 48312A0548 for ; Tue, 27 Feb 2024 08:45:44 +0000 (UTC) X-FDA: 81836950608.07.A77D2E7 Received: from NAM04-DM6-obe.outbound.protection.outlook.com (mail-dm6nam04on2054.outbound.protection.outlook.com [40.107.102.54]) by imf01.hostedemail.com (Postfix) with ESMTP id 2E9D040018 for ; Tue, 27 Feb 2024 08:45:40 +0000 (UTC) Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=JP1qypM0; spf=pass (imf01.hostedemail.com: domain of ankita@nvidia.com designates 40.107.102.54 as permitted sender) smtp.mailfrom=ankita@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1709023541; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=dTuhx1q8zHzaIJNM3dGqfLK0armnPXZmOkeGA1zLY/Y=; b=MhKB0yDrJKUQXeHhFDUE1Nf/CKjI4nEyJMsy6r9fmmps29lK4ABKvrnaWVUHozVetAudKU OgXRQcGGVvP14AMCRjr1+h+beQneXNS4+Z6nVV41m5ECp3rGTP1h0dm6Owy5MA4BCX7IPb 3RDXgCofxwJOQoZojE89hMqdXPCLpmE= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1709023541; a=rsa-sha256; cv=pass; b=5XIURjTsnQP9C6f4MSfeeLMMwykJh4h529DbWbF8MKX8TB2EH2TLUWuBWJrsLBC4RN8XTV iZjm8IsrpbK20tmUJJMOpwYA4MYoRrkf0NLANtVxHNn4WzivsIhnQgbXFG5MdW1tFYCu+X uG161iKR+6wI/Kq74OKpPUqnzt6bXsU= ARC-Authentication-Results: i=2; imf01.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=JP1qypM0; spf=pass (imf01.hostedemail.com: domain of ankita@nvidia.com designates 40.107.102.54 as permitted sender) smtp.mailfrom=ankita@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1") ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GRz4WSqlkteRAXBBqnMEywtr7wVecfBMb+IbWfzVdr3eGuLXEIu4l0ErKYoXl4jge4N8IiqN+I/PpIRa95p/OLtDpgi5o3Kjy0doIx3hrIUNn0q4Jo4cILpXja0XWzQwIkBGTBQpbvj29zl113DWWqXCI35VLKj8BlEiHU/3NYEKVq8EtOX/P/esuV45pYJUFO4PTrE1EIE1Jzeh+iyddXOBEanSUwyKWBwod8tVlWVfRdY22qLIm+YbwIctOu3ibV+fLYEz3wdDWw72Uh1YE2Y4aYGwt39Rpx9x/RbzIz633gYpzaqKluxXRhpENq4KAEMcf2Gcy4uPnHjzF4XUxA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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; bh=dTuhx1q8zHzaIJNM3dGqfLK0armnPXZmOkeGA1zLY/Y=; b=Fg2pKf2wuBZscEB3v7dK+TXxGYi/ZCSXIrUMXfcj4wwoXevHXvS4mQ7YxFuzm2/80/wTrKyyQt73z2mAueK3rSDtATazkktF8bkA6W1MTVT8P9Q/eNmKBwymzUKy5zHa2yH0eQmbOAZRgM98o6hU6USO8NugqsjMOcqKfGGIrwOSgIGG/2GBs8HT3LOP+yNaJiBM8hQ9sMOT6N79sH7IcWmclsLNAdg5Mz5Drq9Xo/oILj5Ns8zIyerY7knLuioT6AnYNgf86yEI5uVzxEcu8MyxvE8EckbTNUXGYqBaDGcrEHWg/1sIOexsKweMvwCsKYfPtVbsfdOjz9TQxshW8w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=dTuhx1q8zHzaIJNM3dGqfLK0armnPXZmOkeGA1zLY/Y=; b=JP1qypM0Pkpz7WEXlTyKrYl3O53KXhMBfU6RDlgJGluxBdknp0Kpq8tTr4kIO8a5cM+j8/2NjPlIIWQ6n70bZT+h69DlRy9v8+4En87/bdI1OZGIPDFFF+QEFItF2sXWCI9ey+QcMs+yTVMuelYbRNEpFDSNlnsbUXpdci4h7bFwaOm4WNVOFn9VQTRRrQ16yRf1VAjlYCuujukF1E7A2d7M/O0x/nYRd+h96UBPa2pvZxMwBzlhFly5UA4FPC8cOFNY7XdTotdoFcUQUP6NtE2JX6e+z7XAWD9mHmVoesd2pxT2Rpn/ugYIztH7FP4HYJcBni4q+q3MHm01stATBA== Received: from SA1PR12MB7199.namprd12.prod.outlook.com (2603:10b6:806:2bc::21) by DS7PR12MB6071.namprd12.prod.outlook.com (2603:10b6:8:9d::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7316.36; Tue, 27 Feb 2024 08:45:38 +0000 Received: from SA1PR12MB7199.namprd12.prod.outlook.com ([fe80::284c:211f:16dc:f7b2]) by SA1PR12MB7199.namprd12.prod.outlook.com ([fe80::284c:211f:16dc:f7b2%5]) with mapi id 15.20.7316.032; Tue, 27 Feb 2024 08:45:38 +0000 From: Ankit Agrawal To: Oliver Upton , "wangjinchao@xfusion.com" , "shahuang@redhat.com" , "catalin.marinas@arm.com" , "ryan.roberts@arm.com" , "stefanha@redhat.com" , "yi.l.liu@intel.com" , "david@redhat.com" , Jason Gunthorpe , "lpieralisi@kernel.org" , "gshan@redhat.com" , "brauner@kernel.org" , "rananta@google.com" , "alex.williamson@redhat.com" , "suzuki.poulose@arm.com" , "kevin.tian@intel.com" , "surenb@google.com" , "ricarkol@google.com" , "linus.walleij@linaro.org" , "james.morse@arm.com" , "ardb@kernel.org" , "will@kernel.org" , "akpm@linux-foundation.org" , "maz@kernel.org" , "bhe@redhat.com" , "reinette.chatre@intel.com" , "yuzenghui@huawei.com" , "andreyknvl@gmail.com" , "linux-mm@kvack.org" , "mark.rutland@arm.com" CC: Dan Williams , Andy Currid , Alistair Popple , Matt Ochs , "linux-kernel@vger.kernel.org" , Aniket Agashe , Neo Jia , "kvm@vger.kernel.org" , John Hubbard , "kvmarm@lists.linux.dev" , Zhi Wang , Kirti Wankhede , Vikram Sethi , "linux-arm-kernel@lists.infradead.org" , "Tarun Gupta (SW-GPU)" Subject: Re: [PATCH v9 0/4] KVM: arm64: Allow the VM to select DEVICE_* and NORMAL_NC for IO memory Thread-Topic: [PATCH v9 0/4] KVM: arm64: Allow the VM to select DEVICE_* and NORMAL_NC for IO memory Thread-Index: AQHaZzMEm+T/CCvzwkOvE3ojID9DN7EdTV0AgACUxr8= Date: Tue, 27 Feb 2024 08:45:38 +0000 Message-ID: References: <20240224150546.368-1-ankita@nvidia.com> <170899100569.1405597.5047894183843333522.b4-ty@linux.dev> In-Reply-To: <170899100569.1405597.5047894183843333522.b4-ty@linux.dev> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: SA1PR12MB7199:EE_|DS7PR12MB6071:EE_ x-ms-office365-filtering-correlation-id: e30c4d13-bdf7-4614-f75b-08dc377078b2 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: SdagqvIo+DTLuXgEG1Cp/N6wf4c47NyMxdctuMwlTntk5Ct/cPRdDvX4bZluJyiJTPQjyhEZe1D++BypmWYj1ifq0QER3dKZR8u36PqDPSiZa7dwu3wwRXyC4/ZbjFNGuDT5kWuSaFtq7nMJACAxOmUKr9ZHiIlYHaRQCWvvvag5cBhfBwJFi2QF/z8gxEPqpkTR8t0nkljgbtRnxv2jYqQXCczZp2pQcXBUHBfz2hoEkiGBe84Uys04khLjjs/8TCNRcSbyi2YrQn+xElEe0Ivg4X+h3NoR/uG/RlJ+iep1YQe32gYZMsp5mHS/1GJoLzpxv+yEsuz+13VN+XchYy9OcMkIB/T9Riaq67b5WsHsUnK7tsDynUnJ8WQviHvMjGZEjBlgHwFHMZvhsbURZvj1MMBoaIfqcu22ra2rc5lby0Js2bON/G1iFvE18Q6DLhrJE2isgK0nLCMAK1MlVtGioxmBGARIyPV6jGC5Gl2//ha9TbIx2Gj0mV24BFLxFPO3BTgvJsmK6uplZ0VGMbK1PuBmSOGHKlzzkmOyZO9MJnZAQ71a643z6oM7AGHz+1UYhzu+05MpNg9p0ryiKRaIkh8woOcjcCxe3XzsyOYxqmVnqu5tx/oh1LG2MiT5vNnODRyafujgGjlob5YjzXc2E7D6g2+gDI1d+qmyYE/sqjzi/jSaeeteNshPPNlxDIK+G196DpWk5UzaPFAilHMRJFfVtRJLkJm0SC9pIXzb2ktRO0vF1VSngC9CAjCM12GxXrDWGEynNsBrCjbMZQ== x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SA1PR12MB7199.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(38070700009)(921011);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?iso-8859-1?Q?jPmbaFzJlLXW7xp8ap6bVFVZzSdRsUSRPP3dDYjdW3MOa1K5o3AoQQc2Lx?= =?iso-8859-1?Q?dMu1QDcE0dIpmOU+JfuOSEmk3XYfACjvVT30grGBryxP616hJRCgmOehqq?= =?iso-8859-1?Q?QMkJbZsGBhfRfkyIqhQIC/L6dMnzXJ22dErXOOFrYn6C0TYn2fcDsWfNTq?= =?iso-8859-1?Q?4M1NUsolSl6HH4YpZ74zp15j+uN7ybEZBiB3Xz7PzLq4FeajgXVi+OtlBG?= =?iso-8859-1?Q?BbOZyh/5y6ZguQYwTLkdhwGJxypCe2nbMNWaT9wYlsHXtpNVL8UbuwN638?= =?iso-8859-1?Q?mQ8Z0IqKstgp7dAVV42s1kmUrmfSPmJVYsS76oDusR51YVvR+onSNdp8lX?= =?iso-8859-1?Q?4+RiIAYFsqsQNNtL89a5PtIaQHxM5Eof+e9tfSmXeF3aePXoa+9SEWYPi3?= =?iso-8859-1?Q?tC84d0nwrVYDlCZmx0yrIfZ4LWzGo1MYTtG2ekQZ6OVn+riDvDxt7JlY13?= =?iso-8859-1?Q?BAQT1EIBkDJDLcMBFLTWhcj8AoGuYNSi210muXnWkcCVYCgOhDrCZT2i/Y?= =?iso-8859-1?Q?+dAPDYzdP9pUCKnxi9aqKHbOyav51lA0qtEDD7x1clUW8QoagbfX+50lg/?= =?iso-8859-1?Q?Iob1iRNTXIvYx19rCJ9RBFufaqCenWulT2G0SzMrEFgHMCfTZvyDK5yuAC?= =?iso-8859-1?Q?8EIJaWTW1c+u0Ohrgzf1SjZzeUpHzTAQLksujvpobRWK1g4s6TUBChwk+X?= =?iso-8859-1?Q?SKqK5e+2ZitYnS9NsqRv7Ir4Jt6UVWWd3/jhatvuKJO4F2DOnCvQOxqaL/?= =?iso-8859-1?Q?bOIMMtJgkPPDpRK5ElvRMYHtXR6fNsK+DgbQ5yilbOFFT2FQBUrMviX0Wy?= =?iso-8859-1?Q?H2u/Ue0uGBFIrz/iQE7x9KlCE9oMWwm7RCW/XSoX8RcMMH5a6BAwDBvoGh?= =?iso-8859-1?Q?5GpGWtTzYwEt0nmAloqCaRvZjHPVRkoH3WheGd0EPOmkDpSaLV/CoHmADl?= =?iso-8859-1?Q?AULE+h0JvLNgA79ynqrMWszZthHYtTTK6U2aILRCMDsUrVWBu/8m5zfRQ3?= =?iso-8859-1?Q?K2uyXPXaJAZm5sxzePalnkguOpf76yjyxVk/QCOd6ksJsNcCLsv21FS2Up?= =?iso-8859-1?Q?jycwiA4Etm3gDauZRVXv/gp0Z5kPBXe5tYZU/FoDSlMFII1wAvBL0REwUu?= =?iso-8859-1?Q?1rK8pRwl1OoAOkITk39kyRmWk0nCfuzx31BeO133NDVARdcOm+MCPVpxa8?= =?iso-8859-1?Q?T43pUVYrfPppY7K4OXMVDsBKV0l8kZ0wEJ4WQJHs7M1wtrLx8nnSBI1xSO?= =?iso-8859-1?Q?d1rYXh0g/D034PmubdrGQ/cUccEoHSWTxyjtrZS3jM+UeQkYRZRNSdOTfX?= =?iso-8859-1?Q?VfKIATJYzd5P2OXTj4o0iooNCtln8FOHb+ecQuCdH/65BidfeGdBQjYKPW?= =?iso-8859-1?Q?4HRjjHL2Qz96phYLpmcsJ482bzOPkjLqU3D0Hbk7Ex/p1GwBntCOuMAYYv?= =?iso-8859-1?Q?oYkhJgerevUkFBLONd8WYQkREHrc7pbInQkT+Rn1NPA0C+dAIZN44D8hXP?= =?iso-8859-1?Q?WTnBFfS6t1SWN6Xkjv2bVNnhI7a0M1gvyjeIpDXfMDOhJ7b7DM932UfHna?= =?iso-8859-1?Q?fQuM4LYDd2Qo7gqHlwp2DNPlN4lNUlwHSlCyvBeF5kUWKWQswja0VdWhxD?= =?iso-8859-1?Q?INrRmNyzLh+MQ=3D?= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SA1PR12MB7199.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: e30c4d13-bdf7-4614-f75b-08dc377078b2 X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Feb 2024 08:45:38.0612 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: lQFSU47ktH0KdpJe/gh8C7AAO7HIdH8c8DuYddqtypTyFKZE/itXRW6rkPwQ3ELLwITYIzz/ZqGBsbtEEhCDPA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6071 X-Rspamd-Queue-Id: 2E9D040018 X-Rspam-User: X-Stat-Signature: fkqh48q64sjt1ecixnc58j1q64pjt5jk X-Rspamd-Server: rspam03 X-HE-Tag: 1709023540-217830 X-HE-Meta: U2FsdGVkX19VqP1LjKXH6+A3p9z3b5Z9Vaws6QiuRaR0c07Zvd9U6cn2c079poo90tArV4TC3T498QkkrkmUOWvtX2WW2rJMVRmd+qggEC3NwEw78DnHYqIwSJU3pDiCdmtWSv7BlpIxvunwvGZY2345Z8sylEV56C9dhMjcfH5HCwYl2ZtEPKANleSAGnhnlhMgDAknWh/1C7btlR6nnQnp8+tNMnt68vhbA8btSRRwN0OYzg1atVW2RRxxER9LfnSW9NFMeappxCpnJlXXqXA2W+XU4PuVv0sizgCpeyT15NqZlKLucHb7HbysLkLem6S39sR+c+YMB9q58sPyENEG0NT5S/LZVXwzGLQVSr6ckSEOU268HIERDbAiIKOugSNblJm4NzLwLbeiNWCJP57ybLh6W18064CGQQXYz/7EvwwR9bpmhQN9XceKE/eE1wRVuZBng1RwlBEqTisoB8n8J0uQOvaPDUnBqUy9vDF0wrSGPmIYDiREsNpzUfoS5a3IuJF93rnGQr8NMGlZjp1i0Zwp7Ci/VzUFAXiFu4wV8Of+RSoW7j3Y/SkCZQpG/gdjC/xPRC3SDQ6TA+mssMwp1MGLurBOfnVIWjJJOxDCUwIPPgpSjjrUwhY3PSHhRy8P33T2Aaf2/6RK3d3NXtzXI1D2SUCTv3H89KkzD+HHcRFsDhloE7PRJxm15zwkuHYZCHtXez/DVCln9eEBU4vfZrl0Y+reQr+ZmmFf3+T0yDBzM3wEisu9gJI/9+Amxpt34l24NgALu+VbelPqIZHEGS/o6s5wd7iZ3K8vcst7GQCUgbMgwNcQ/e/TUs/jwXhm5HfJDcWWTX7+VGVsptwAErlv+THJwMtwb5+nnkDuPJ5FKc8Sj94yOM/kScA1A+9wguonqxQJcKfR2E4T5aNGelVD9G7MNQ2WkR8tTXgiLcq1oX7Z8QI8+R8pKgRurPzZ5evZCIMgecJDhQ+ pGYDfmu7 pPGBHQ5KJeKnIA0vHB9Amiflwgg8NqDo8FG87WeKpZMvfE2ot/TDdYsiWZ/7APhdzj/FH4pez7mF45bOUL2giDak5xclt2lTccZzzJ5SUTmGyVAHF82knkPGdVLLWaRZP8R7mL6XhLssGni9hpM700MZSoifR2Od4houRnHcr9NWzqfcSOALeNMF66a2H3n96fxId8TkqaP8seGTZVwR+BaJ9TN9K7ighXmZwEjbuFnovO+j8tcdoS9bbP4FtCbEsNLXw6WVlmfyCPjj8hkYJ45Ut0L8AgJcDX1XOZycF978LJsOu6a+hWrWSK5VL35NPXew2NLCBROK/cqcgUuyTzyiSAkt2cPa9FN76l6+DeVyenlTD/XNpwtRid2LXwX0Q1dIclhmdaIKZH3oEE0lF4KmEbQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: >>=0A= >> Currently, KVM for ARM64 maps at stage 2 memory that is considered devic= e=0A= >> with DEVICE_nGnRE memory attributes; this setting overrides (per=0A= >> ARM architecture [1]) any device MMIO mapping present at stage 1,=0A= >> resulting in a set-up whereby a guest operating system cannot=0A= >> determine device MMIO mapping memory attributes on its own but=0A= >> it is always overridden by the KVM stage 2 default.=0A= >>=0A= >> [...]=0A= >=0A= > High time to get this cooking in -next. Looks like there aren't any=0A= > conflicts w/ VFIO, but if that changes I've pushed a topic branch to:=0A= >=0A= >=A0 https://git.kernel.org/pub/scm/linux/kernel/git/oupton/linux.git/log/?= h=3Dkvm-arm64/vfio-normal-nc=0A= >=0A= > Applied to kvmarm/next, thanks!=0A= =0A= Thanks Oliver for your efforts. Pardon my naivety, but what would the=0A= sequence of steps that this series go through next before landing in an=0A= rc branch? Also, what is the earliest branch this is supposed to land=0A= assuming all goes well?=0A= =0A= >=0A= > [1/4] KVM: arm64: Introduce new flag for non-cacheable IO memory=0A= >=A0=A0=A0=A0=A0 https://git.kernel.org/kvmarm/kvmarm/c/c034ec84e879=0A= > [2/4] mm: Introduce new flag to indicate wc safe=0A= >=A0=A0=A0=A0=A0 https://git.kernel.org/kvmarm/kvmarm/c/5c656fcdd6c6=0A= > [3/4] KVM: arm64: Set io memory s2 pte as normalnc for vfio pci device=0A= >=A0=A0=A0=A0=A0 https://git.kernel.org/kvmarm/kvmarm/c/8c47ce3e1d2c=0A= > [4/4] vfio: Convey kvm that the vfio-pci device is wc safe=0A= >=A0=A0=A0=A0=A0 https://git.kernel.org/kvmarm/kvmarm/c/a39d3a966a09=0A=