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pr=C Message-ID: <3984b69d-e15f-4863-8af9-53b6cc0f6bd1@amd.com> Date: Wed, 18 Dec 2024 14:56:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] docs: fusa: Add dom0less domain configuration requirements To: Bertrand Marquis , Ayan Kumar Halder CC: Ayan Kumar Halder , "xen-devel@lists.xenproject.org" , "Stefano Stabellini" , Artem Mygaiev References: <20241212190325.2130129-1-ayan.kumar.halder@amd.com> <779AFC45-3F8C-4065-A39E-9325F9C72AAD@arm.com> <2cf952f4-69cf-4eea-aace-4b7bf291b9f3@amd.com> <983EB0F5-8C88-4063-9C97-EC8BB89AA5B0@arm.com> Content-Language: en-US From: Michal Orzel In-Reply-To: <983EB0F5-8C88-4063-9C97-EC8BB89AA5B0@arm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D2:EE_|PH7PR12MB9175:EE_ X-MS-Office365-Filtering-Correlation-Id: 44930722-6623-48f0-0ce8-08dd1f6bcedf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|1800799024|36860700013; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Dec 2024 13:56:44.7445 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 44930722-6623-48f0-0ce8-08dd1f6bcedf X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D2.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB9175 On 18/12/2024 14:08, Bertrand Marquis wrote: > > > Hi Ayan, > >> On 18 Dec 2024, at 12:34, Ayan Kumar Halder wrote: >> >> >> On 18/12/2024 08:27, Bertrand Marquis wrote: >>> Hi Ayan, >> Hi Bertrand, >>> >>>> On 12 Dec 2024, at 20:03, Ayan Kumar Halder wrote: >>>> >>>> From: Michal Orzel >>>> >>>> Add requirements for dom0less domain creation. >>>> >>>> Signed-off-by: Michal Orzel >>>> Signed-off-by: Ayan Kumar Halder >>>> --- [...] >>>> +SPIs >>>> +---- >>>> + >>>> +`XenSwdgn~spis~1` >>>> + >>>> +Description: >>>> +Xen shall allocate a specified number of shared peripheral interrupts for a >>>> +domain. >>> This is very ambiguous. What do you mean here ? >> Xen shall provide a way to specify the number of shared peripheral interrupts for a domain via the device tree . > > I am lost in how you achieve such a thing in the configuration. > All you can do is assigned an interrupt to a domain, but the sharing part I do not see what Xen has to do with it. This req is about Arm's SPIs (Shared Peripheral Interrupts) and the max number you can allocate to a domU. You can see more here: https://xenbits.xenproject.org/gitweb/?p=xen.git;a=blob;f=docs/misc/arm/device-tree/booting.txt;hb=HEAD#l172 ~Michal