From: Nuno Das Neves <nunodasneves@linux.microsoft.com>
To: linux-hyperv@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
mhklinux@outlook.com, decui@microsoft.com,
catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
hpa@zytor.com, lpieralisi@kernel.org, kw@linux.com,
manivannan.sadhasivam@linaro.org, robh@kernel.org,
bhelgaas@google.com, jinankjain@linux.microsoft.com,
skinsburskii@linux.microsoft.com, mrathor@linux.microsoft.com,
x86@kernel.org, Nuno Das Neves <nunodasneves@linux.microsoft.com>
Subject: [PATCH 1/4] PCI: hv: Do not do vmbus initialization on baremetal
Date: Tue, 10 Jun 2025 16:52:03 -0700 [thread overview]
Message-ID: <1749599526-19963-2-git-send-email-nunodasneves@linux.microsoft.com> (raw)
In-Reply-To: <1749599526-19963-1-git-send-email-nunodasneves@linux.microsoft.com>
From: Mukesh Rathor <mrathor@linux.microsoft.com>
init_hv_pci_drv() is not relevant for root partition on baremetal as there
is no vmbus. On nested (with a Windows L1 root), vmbus is present.
Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@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
next prev parent reply other threads:[~2025-06-10 23:52 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-10 23:52 [PATCH 0/4] Nested virtualization fixes for root partition Nuno Das Neves
2025-06-10 23:52 ` Nuno Das Neves [this message]
2025-06-11 23:06 ` [PATCH 1/4] PCI: hv: Do not do vmbus initialization on baremetal Michael Kelley
2025-06-16 20:06 ` Nuno Das Neves
2025-06-10 23:52 ` [PATCH 2/4] Drivers: hv: Use nested hypercall for post message and signal event Nuno Das Neves
2025-06-11 23:06 ` Michael Kelley
2025-06-16 20:18 ` Nuno Das Neves
2025-06-10 23:52 ` [PATCH 3/4] x86: hyperv: Expose hv_map_msi_interrupt function Nuno Das Neves
2025-06-11 23:07 ` Michael Kelley
2025-06-18 21:08 ` Nuno Das Neves
2025-06-19 22:02 ` Michael Kelley
2025-06-20 16:19 ` Thomas Gleixner
2025-06-23 22:13 ` Nuno Das Neves
2025-06-10 23:52 ` [PATCH 4/4] PCI: hv: Use the correct hypercall for unmasking interrupts on nested Nuno Das Neves
2025-06-11 23:07 ` Michael Kelley
2025-06-18 21:24 ` Nuno Das Neves
2025-06-13 19:36 ` Bjorn Helgaas
2025-06-18 22:45 ` Nuno Das Neves
2025-06-11 17:55 ` [PATCH 0/4] Nested virtualization fixes for root partition Roman Kisel
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