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pr=C From: Jason Andryuk To: CC: Jason Andryuk , Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , "Volodymyr Babchuk" Subject: [PATCH 04/23] xen/arm: dom0less use domid 0 for hwdom Date: Thu, 6 Mar 2025 17:03:24 -0500 Message-ID: <20250306220343.203047-5-jason.andryuk@amd.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250306220343.203047-1-jason.andryuk@amd.com> References: <20250306220343.203047-1-jason.andryuk@amd.com> MIME-Version: 1.0 Received-SPF: None (SATLEXMB05.amd.com: jason.andryuk@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B370:EE_|SJ0PR12MB8613:EE_ X-MS-Office365-Filtering-Correlation-Id: 887ec4ab-1538-41c1-2ed5-08dd5cfac86c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: QozOmfS1LK8WEXSkjRxc3wsUaZp2sUZm9wzF0A+wSfRzTjKjKlBcw3CTzxyH2w/tEoqK7M/dduksUsJhRrEObCfcvVZWbEXGQzULazfN5WR54REXovLu6Iy9BeSwE+nVCLGBjCocO3vpiDy9kfnkVRzvpVQkBZeXqngFMm9AR7mIJdJolEgZeDVY9MJP6ppfV5U7fSXofAd1cHLr68tMrdcZ48nRXTDikZAlncxnoPnfGMOlOOQZmjH8f0gIOcKhLjAhvqZ7GGmkRDaJIflzPEKbs6X80hGgwLFpr3K51MMrnF9pfYFhN+sweX3whepu8jBWiRWhvegY80ifauVIwn14hTXFlayqD1YfW7tO2Ua+AujVzvfEe7FakUPzW/GEmt3lfNVTVvByFCYzF1kHk+dUDhWFg9f+ukSyeE6/jdrH6hlXoMcs7pShCcodl8FTneyV7nqU0Dl47Y+LKl1I6lTzLSbNZ+cXjeGRt/9vaTjZSOdQEY3jEzAfIQr0Xay03f4qrl4kyqAZ/upopIEUPLTYy/wUtmxjyxEyeth8aJ19dN2XcAjmh7mI9lyu3HJeZNc94xApoUMejlOZUw+D+V/kVk6J2yIjLeIjGLH/kHtIyu8T/fKwZlFKsXnDCI5rijUBg9KdQCpVy+ML2mZ9GE2u7fxelgJ4zzz+Q/3wUc80i8+PZo52iPRcsonkAmaAZ283c9q+o29/x5giwT5CRk+5vdsjEuYpTcywCQ+T8vTHsXRx8zp5TIP01OlEI/m5ejP/qxE5efYPoPtNHkkabA4nzUUYdU63AbzCstVK32XxGNtw2BmMyiB708E58RnvN6g/T9npdcnVfRmnB/GjXoxTDuUm53hHIXr84u1ndVgMFF0Z4R4Mi+V72hBT8IvSuKf6vq/+GpGH3WxnJMa1tnDIh+rKS13mHnZoXhIDU/mNxYn8VoSSbsWOpCAVwU5Rm92w7LiYuIk65PB5IOneYZn8pxEr072g4+9QGxi7rGzRETWqvQ4IQyyxOFlymT7//8DO152ikDcldIe/dq5+Pc9asv8uw+spD31Q8dc5YSJZjDJtRo8+dR00GQ+WDrxPuFT9LqkthcrV5sCko0UjAici0evlvJKYjCeDuCraggp8kCaZj67QdcS1xjJxOqfUACrOLTrfBjDxECOJOmjkQ04LcyKbVDhNrhvyhcO3ARgGbXPi8hUwxXScrEd0rE/NiILfGMCmMb/tvcrWbUb2euMIf3xyGIfbsOcZKZyhgkEZoJWZJ+QhiMKsXFrazLAOU4VkRDOug88pqd0kM4eq3ncFEEtqnzyRg9nIlR1LEnLC+7f1KRXDaNshfdj28lTNtaN4Rw+WehE2AAGOJv+mGDyP6EMjo20ameNT0fsaR9VeC3UZAFziwJ03aBRpqA23v8Z/cSFRL2fsDoYxSzDN+9BeCxnHQ5Pf1Q5kE6qNQEwIUyLc16ylnWAUIawJ8z6gHWDobcOJfGJ+itglkuCCVtWIXzOPp7taeRyvhjqlUPo= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(376014)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Mar 2025 22:03:53.0122 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 887ec4ab-1538-41c1-2ed5-08dd5cfac86c 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: BN3PEPF0000B370.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB8613 Assign domid 0 to the hwdom. Normally, dom0less does not use domid 0. This fixes using the Xen console which assumes domid 0 to use the hypercall interface. Signed-off-by: Jason Andryuk --- xen/arch/arm/dom0less-build.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/xen/arch/arm/dom0less-build.c b/xen/arch/arm/dom0less-build.c index e539bcc762..5a7871939b 100644 --- a/xen/arch/arm/dom0less-build.c +++ b/xen/arch/arm/dom0less-build.c @@ -969,6 +969,7 @@ void __init create_domUs(void) dt_for_each_child_node(chosen, node) { struct domain *d; + domid_t domid; struct xen_domctl_createdomain d_cfg = { .arch.gic_version = XEN_DOMCTL_CONFIG_GIC_NATIVE, .flags = XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap, @@ -1121,7 +1122,12 @@ void __init create_domUs(void) * very important to use the pre-increment operator to call * domain_create() with a domid > 0. (domid == 0 is reserved for Dom0) */ - d = domain_create(++max_init_domid, &d_cfg, flags); + if ( flags & CDF_hardware ) + domid = 0; + else + domid = ++max_init_domid; + + d = domain_create(domid, &d_cfg, flags); if ( IS_ERR(d) ) panic("Error creating domain %s (rc = %ld)\n", dt_node_name(node), PTR_ERR(d));