From: Wei Liu <wei.liu@kernel.org>
To: Linux on Hyper-V List <linux-hyperv@vger.kernel.org>
Cc: virtualization@lists.linux-foundation.org,
Linux Kernel List <linux-kernel@vger.kernel.org>,
Michael Kelley <mikelley@microsoft.com>,
Vineeth Pillai <viremana@linux.microsoft.com>,
Sunil Muthuswamy <sunilmut@microsoft.com>,
Nuno Das Neves <nunodasneves@linux.microsoft.com>,
pasha.tatashin@soleen.com, Wei Liu <wei.liu@kernel.org>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>
Subject: [PATCH v5 03/16] Drivers: hv: vmbus: skip VMBus initialization if Linux is root
Date: Wed, 20 Jan 2021 12:00:45 +0000 [thread overview]
Message-ID: <20210120120058.29138-4-wei.liu@kernel.org> (raw)
In-Reply-To: <20210120120058.29138-1-wei.liu@kernel.org>
There is no VMBus and the other infrastructures initialized in
hv_acpi_init when Linux is running as the root partition.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
---
v3: Return 0 instead of -ENODEV.
---
drivers/hv/vmbus_drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 502f8cd95f6d..ee27b3670a51 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2620,6 +2620,9 @@ static int __init hv_acpi_init(void)
if (!hv_is_hyperv_initialized())
return -ENODEV;
+ if (hv_root_partition)
+ return 0;
+
init_completion(&probe_event);
/*
--
2.20.1
next prev parent reply other threads:[~2021-01-20 12:57 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 12:00 [PATCH v5 00/16] Introducing Linux root partition support for Microsoft Hypervisor Wei Liu
2021-01-20 12:00 ` [PATCH v5 01/16] asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT Wei Liu
2021-01-20 15:57 ` Pavel Tatashin
2021-01-26 0:25 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 02/16] x86/hyperv: detect if Linux is the root partition Wei Liu
2021-01-20 16:03 ` Pavel Tatashin
2021-01-26 15:06 ` Wei Liu
2021-01-26 0:31 ` Michael Kelley
2021-01-26 15:15 ` Wei Liu
2021-01-26 15:24 ` Wei Liu
2021-01-20 12:00 ` Wei Liu [this message]
2021-01-20 16:06 ` [PATCH v5 03/16] Drivers: hv: vmbus: skip VMBus initialization if Linux is root Pavel Tatashin
2021-01-26 0:32 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 04/16] iommu/hyperv: don't setup IRQ remapping when running as root Wei Liu
2021-01-20 16:08 ` Pavel Tatashin
2021-01-26 0:33 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 05/16] clocksource/hyperv: use MSR-based access if " Wei Liu
2021-01-20 16:13 ` Pavel Tatashin
2021-01-26 15:19 ` Wei Liu
2021-01-26 0:34 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 06/16] x86/hyperv: allocate output arg pages if required Wei Liu
2021-01-20 15:12 ` kernel test robot
2021-01-20 19:44 ` Pavel Tatashin
2021-01-26 0:41 ` Michael Kelley
2021-01-26 18:09 ` Wei Liu
2021-01-20 12:00 ` [PATCH v5 07/16] x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary Wei Liu
2021-01-26 0:48 ` Michael Kelley
2021-02-02 15:03 ` Wei Liu
2021-02-04 16:33 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 08/16] x86/hyperv: handling hypercall page setup for root Wei Liu
2021-01-26 0:49 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 09/16] x86/hyperv: provide a bunch of helper functions Wei Liu
2021-01-26 1:20 ` Michael Kelley
2021-02-02 16:19 ` Wei Liu
2021-01-20 12:00 ` [PATCH v5 10/16] x86/hyperv: implement and use hv_smp_prepare_cpus Wei Liu
2021-01-26 1:21 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 11/16] asm-generic/hyperv: update hv_msi_entry Wei Liu
2021-01-26 1:22 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 12/16] asm-generic/hyperv: update hv_interrupt_entry Wei Liu
2021-01-26 1:23 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 13/16] asm-generic/hyperv: introduce hv_device_id and auxiliary structures Wei Liu
2021-01-26 1:26 ` Michael Kelley
2021-02-02 17:02 ` Wei Liu
2021-02-03 13:26 ` Wei Liu
2021-02-03 13:49 ` Arnd Bergmann
2021-02-03 14:09 ` Wei Liu
2021-02-04 16:46 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 14/16] asm-generic/hyperv: import data structures for mapping device interrupts Wei Liu
2021-01-26 1:27 ` Michael Kelley
2021-01-20 12:00 ` [PATCH v5 15/16] x86/hyperv: implement an MSI domain for root partition Wei Liu
2021-01-27 5:47 ` Michael Kelley
2021-02-02 17:31 ` Wei Liu
2021-02-02 18:15 ` Michael Kelley
2021-02-02 18:16 ` Wei Liu
2021-01-20 12:00 ` [PATCH v5 16/16] iommu/hyperv: setup an IO-APIC IRQ remapping " Wei Liu
2021-01-27 5:47 ` Michael Kelley
2021-02-03 12:47 ` Wei Liu
2021-02-04 16:41 ` Michael Kelley
2021-02-04 16:48 ` Wei Liu
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