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Tsirkin" , Jason Wang , "kvm@vger.kernel.org" , Maor Gottlieb , "virtualization@lists.linux-foundation.org" , Jiri Pirko , Leon Romanovsky Subject: Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device Message-ID: <20231012132749.GK3952@nvidia.com> References: <20231010140849.GL3952@nvidia.com> <20231010105339-mutt-send-email-mst@kernel.org> <20231010111339-mutt-send-email-mst@kernel.org> <20231010155937.GN3952@nvidia.com> <20231011021454-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: BL1PR13CA0363.namprd13.prod.outlook.com (2603:10b6:208:2c0::8) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|MN0PR12MB5811:EE_ X-MS-Office365-Filtering-Correlation-Id: f2814f39-ea82-4d4a-ec7f-08dbcb2708b6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?X3cguscC9jSIDdZbh4iYV3WcA7Vi2xd5HUyu6HYUu6IaakfoiNwzdS1ZleJt?= =?us-ascii?Q?PyCEQh4zNmNDHoBy4iFGGUj7RB03SO0RDXAYT93ykgY8NpHYvAU+yqiteRYj?= =?us-ascii?Q?nNgThnpQ7fij9g+bhdh3j/IuOTd6uuxDJ3ewLdGPefbdG8iJPjVTjnciSqEe?= =?us-ascii?Q?+wGJUDFgqE28BkFvdVQyqD7C6eo/1PYLb9Sq88xWhb+qFb7ykxsFUVhRWAFT?= =?us-ascii?Q?oy+9rK85AIsvgg65yTbT+DgmbMGygDAYMjYV1XLwSPf6dQ+fHMYsw6c9VDa/?= =?us-ascii?Q?IQ1KSyNHNmER0a/XSvzkYI6+lnHLMA4/O+E/l8MBgr4SlwpmA34nYZF14lg6?= =?us-ascii?Q?nSiOTHRoKBFRhdfEuFaCRooAkk4AHt7Dn9t8hsZpAZDropKJbGBWHyVhNjGe?= =?us-ascii?Q?yWZIf/gpmfve1OuNRKwMI54lKlm1oZxc53Xggngz9GNM3du1naIh48pQeNR5?= =?us-ascii?Q?D77NK9pkLDboSveBhip/jE+BGToXD2G1btgfRD42fVS6Ro5yacgbfEPGkJts?= =?us-ascii?Q?oeHLKVDHgVQb81xNdVt+W9Bc9oVpSIP0rD8G9vJn0tBwDa9e+jA+WX0dF1Ek?= =?us-ascii?Q?tJkUWMVTZsVsCCfZ/rX/+i29/1ovp19j03H+ywGPRnfjd0r+2U7YvTqurWhM?= =?us-ascii?Q?5pXIx0FukatlyVEZQ+E3xafY+NnofS9z7RDXoiZruMoP9drD//69ki61+7cB?= =?us-ascii?Q?JmjHO4e2PTGs0GCyKCKdm8FwmKxxISSQSK33XnckBpgKjheI6zJhZH+ypPNK?= =?us-ascii?Q?YBvifLRCuFET6GqoImtQg/GgUAsQ2JcBM8zTe9QPWQSdupqgVfXyNP/c9k5B?= =?us-ascii?Q?MSaGOrxkzA0LanbrAk9t7AMgG+uYsHCJvOURXHn0lEuky9jgziCTgj9cTtmL?= =?us-ascii?Q?cII09HV12swEi+MZcQw2h7OggOFd/DX9bzolqsVLT0aNUHcuQ6KEeF4GW2ac?= =?us-ascii?Q?sHXNqUKLDIyKpa9o6AaNMuaIpFKSq+xeCMRHIPmppxyemKOn4JnthD1RQaFL?= =?us-ascii?Q?mzXfozvwHB5VPI40p6l2dcdVf/fMlkuGpls/IF1CkcJJ6JOpJ4jpBnjhV0Cm?= =?us-ascii?Q?4nnCsclipoTnyCusI5S8kCtceeb9MZasQelbwUwosd0QDh76NIEJ007d+Pev?= =?us-ascii?Q?6GKpilOYmnPcR+oOfjmRXSbeREpddtfQl1N5WRvNQWbMD+3t1OC5NdvqKYFI?= =?us-ascii?Q?PAAsLCq6UKThnQkgF08P1mX4tHk/iEEvNZkd3gzQNbYToqa51ONHHo1tvi+U?= =?us-ascii?Q?h4Ngwb/qumtjM9m7AcUikj80Xhxhe/xD8stL9s4lI+RVu9zwAEwRSbtlrbtX?= =?us-ascii?Q?flgud9+14RtUvASXIYEKZUDgN+DduGndFjXsCG6DS51W8Nu6hwp3jwZ4WOfX?= =?us-ascii?Q?uRn5MhYar4hxWW7mIM4EstyUm6huPIiTSRi55anOZry+MZkD0J7VKPvmsCuv?= =?us-ascii?Q?UI8soircx0+7+27eMynO5gweNnih27+QVbqKExoGUHmludNj7X8q6LBALQZe?= =?us-ascii?Q?ZUzQD1R92JqScA6nxUncbNnhA/ykkcLGMp94+IQ/1R2BqlCSZhItq+dI/HCb?= =?us-ascii?Q?CUarGNGn+/g/HIdroPA+MDITvBsXLZ1hAhwfKqav?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: f2814f39-ea82-4d4a-ec7f-08dbcb2708b6 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Oct 2023 13:27:51.4871 (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: qGigrs1nzH2ufMDa+nl2RhF4NX95hBlodf0AL0ENdMZl/4xE+e9v66Q7TBnqHoB7 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5811 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Thu, Oct 12, 2023 at 06:29:47PM +0800, Zhu, Lingshan wrote: > sorry for the late reply, we have discussed this for weeks in virtio mailing > list. I have proposed a live migration solution which is a config space solution. I'm sorry that can't be a serious proposal - config space can't do DMA, it is not suitable. Jason