[PATCH v2 1/6] PCI: hv: Don't load the driver for baremetal root partition
Nuno Das Neves
nunodasneves at linux.microsoft.com
Thu Jul 3 15:44:32 PDT 2025
From: Mukesh Rathor <mrathor at linux.microsoft.com>
The root partition only uses VMBus when running nested.
When running on baremetal the Hyper-V PCI driver is not needed,
so do not initialize it.
Signed-off-by: Mukesh Rathor <mrathor at linux.microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves at linux.microsoft.com>
Reviewed-by: Roman Kisel <romank at linux.microsoft.com>
---
drivers/pci/controller/pci-hyperv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index b4f29ee75848..4d25754dfe2f 100644
--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -4150,6 +4150,9 @@ static int __init init_hv_pci_drv(void)
if (!hv_is_hyperv_initialized())
return -ENODEV;
+ if (hv_root_partition() && !hv_nested)
+ return -ENODEV;
+
ret = hv_pci_irqchip_init();
if (ret)
return ret;
--
2.34.1
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