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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?MvNUNd7NAJY22FEIwf2JZN9Cr/IzeP9l3aanucQD1RsGC6f1LdV223bbPP3E?= =?us-ascii?Q?Sx+XewdGib807AY7E1Ihof4qcuchvBJO2qOnES7yXEF3XkBxwgbXY+eP/SJa?= =?us-ascii?Q?WKtdsXr8nJtU7T1qqSb0jjVT3vkDgmfG0+BgdogbgUiTiG3yKmdfB8DrZ52F?= =?us-ascii?Q?rGkWg+87Vg17GbPwfOe4tvM0vldIygnf4GWMJ6Ba20iBnyTE/9MizHjQeAa3?= =?us-ascii?Q?TNSSBGS8Mn5U+PQaHyXqKaJwo591ZtiOCJ8PH2DX9LRBpxZQklrI6D5Cuwam?= =?us-ascii?Q?H3RuX1X3vzeme07Gr0clhc/ERln/c8ghWKIhLUh3DFg1SlDMeZvH4xUUBSjX?= =?us-ascii?Q?fsG0K8PXkVEP+r11/MFo9km/UDHgOCzmB+PtC6qUFLWbe0mAJwo2fCpYdRJW?= =?us-ascii?Q?1OlHNwsbhwfbSEeo9BUb4lBGCN77aBV/iqcFEwBLcvyNrGbGrhjBWYJm99+G?= =?us-ascii?Q?kMqjEMrK6QenrA121eUKuqigO4eZ79BXSVk+SowpIcg3ZQHXeYLDMLtm4Srs?= =?us-ascii?Q?TV2pxT79XL8JSCxO0nJfj8FrI0/fbpyxyBLnjSWrKtq8b3OvycwU2HZN6VW/?= =?us-ascii?Q?HrCbbmNOWb/jCHQTjC7il+GW5ypQBJXAvoYo57aVVhPx70/my2kLKppkhG6U?= =?us-ascii?Q?gN6Y5jepsQlCyP8hYKht4cXsKl1PHk4Tnk+lXPLJCYeDTEeckj2pBx0BpzQO?= =?us-ascii?Q?8wJlvyXxfPYqw6Hc9Wm+1UV2W5eL6FGijzm6efXWLFB5yMSpAtvOrVh2JxxF?= =?us-ascii?Q?SWAmEedP0X40VNsuNAYJcnbAUCN8ZzH9gvHn3px3SDnT7B4OMEinOWn6+e/A?= =?us-ascii?Q?HSeruHiWi+I2Bvtmuz4AsRs2vEg7AwEfGNadCTh2cVZLZT3PovSw0+SwyNO5?= =?us-ascii?Q?U1pGFRQREWhWwKFD94fVUQ3JP8F37mqFPPslVYXKIuDjgUOqDfu3YNPfrgXq?= =?us-ascii?Q?/CNB5d+m0pP75NIza+Dwt9T3uhjsrZB1Aw+fIeYndY8eYcDsF81UWhnj8ai+?= =?us-ascii?Q?UuyOHJVCU5+5NjVHLzS5e/DoiYNS8/giSgYioqCPxWqam5wrrTNMmG8puKzG?= =?us-ascii?Q?dy72NdLeLgDLZqRARgbm6leFioSrQcPxEy3TeY+aD2b2zCpycupZLiGXCvod?= =?us-ascii?Q?r9LG5Vs0N7pcAY6JhV7z2nPrMNxGDQVjJ1Yznz1pZp/Jpk0NB2nrq+SsT5bf?= =?us-ascii?Q?83t/yk+wasdw5v7eJyPjfhiiOroohvPFeodR64AfDEJtPx/RPZoAO4qQAfMK?= =?us-ascii?Q?tLdwlxsewWk0C6UnkUaYMNwOeozgXNg4Jf9Cn+iy5aAOJQf3aulqhtpzPTaH?= =?us-ascii?Q?HtR6qkCz1z37BUX+lmkUgwkZiE7Ig5tHTGwuDzO/1L61J9AbwhZkFcZ7hrtp?= =?us-ascii?Q?FZ+0bGEDqKJOpxMfYBmQKXHsJPxQW8GKBoDtI+RBnp+H5PWpbzsHW6Z8EPw+?= =?us-ascii?Q?3ZeensnmpT5938WjRttHvZEs0mmT519kZ/m5MT/XVRcV3QTXwWMtLS6oTLZB?= =?us-ascii?Q?eAa/9ssi8WKbEBdOKqqc49xxsFzS1Xo/PtmxWHTyoPAvMVB61Vp5fSh/LJmS?= =?us-ascii?Q?SrZh87byQrDJPaQyHcXT4HovUx26YxnziInfnC/2E3oP8irm9rWKZ4zXQd7q?= =?us-ascii?Q?4lhs3FjgGFx2cuA1fKnZiN9XOwqUgvkWGc07AXpMkfyF8YaCvPxxAzsNSgFj?= =?us-ascii?Q?u4ZUp86wht8pqRjwnGVd+zcBuhmahJb1PNVoPVwtHBwFhAJGfXX2v2bARvsM?= =?us-ascii?Q?AFEDunqjhg=3D=3D?= X-OriginatorOrg: suse.com X-MS-Exchange-CrossTenant-Network-Message-Id: 72b9d0d8-dd7f-4039-2aac-08da19577574 X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB8609.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Apr 2022 12:01:05.0836 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: f7a17af6-1c5c-4a36-aa8b-f5be247aa4ba X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: jtSSdfLR8TCwBKZ1RnkngFMY/aXKjYV4dQQczyXtvHwjg2Sn+opd/PYBSSuSogOBNRV7bzWlX9IUXY/um5htQg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB8039 On 08.04.2022 13:16, Roger Pau Monn=C3=A9 wrote: > On Fri, Apr 08, 2022 at 12:08:02PM +0100, Julien Grall wrote: >> On 08/04/2022 12:01, Roger Pau Monn=C3=A9 wrote: >>>>> I could add a suitable dom0_max_vcpus parameter to osstest. XenServe= r >>>>> uses 16 for example. >>>> >>>> I'm afraid a fixed number won't do, the more that iirc there are >>>> systems with just a few cores in the pool (and you don't want to >>>> over-commit by default). >>> >>> But this won't over commit, it would just assign dom0 16 vCPUs at >>> most, if the system has less than 16 vCPUs that's what would be >>> assigned to dom0. >> >> AFAICT, this is not the case on Arm. If you ask 16 vCPUs, then you will = get >> that number even if there are 8 pCPUs. >> >> In fact, the documentation of dom0_max_vcpus suggests that the numbers o= f >> vCPUs can be more than the number of pCPUs. >=20 > It was my understanding that you could only achieve that by using the > min-max nomenclature, so in order to force 16 vCPUs always you would > have to use: >=20 > dom0_max_vcpus=3D16-16 >=20 > Otherwise the usage of '_max_' in the option name is pointless, and it > should instead be dom0_vcpus. I disagree: Unlike for DomU there's no way to keep a "reserve" of vCPU-s for Dom0, except by offlining some once Dom0 runs. Hence this "max" in the name is quite applicable. Jan