From: Dexuan Cui <decui@microsoft.com>
To: bhelgaas@google.com, davem@davemloft.net, decui@microsoft.com,
edumazet@google.com, haiyangz@microsoft.com, jakeo@microsoft.com,
kuba@kernel.org, kw@linux.com, kys@microsoft.com,
leon@kernel.org, linux-pci@vger.kernel.org,
lpieralisi@kernel.org, mikelley@microsoft.com, pabeni@redhat.com,
robh@kernel.org, saeedm@nvidia.com, wei.liu@kernel.org,
longli@microsoft.com, boqun.feng@gmail.com,
ssengar@microsoft.com, helgaas@kernel.org
Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
josete@microsoft.com
Subject: [PATCH v3 0/6] pci-hyper: Fix race condition bugs for fast device hotplug
Date: Wed, 19 Apr 2023 19:40:31 -0700 [thread overview]
Message-ID: <20230420024037.5921-1-decui@microsoft.com> (raw)
Before the guest finishes probing a device, the host may be already starting
to remove the device. Currently there are multiple race condition bugs in the
pci-hyperv driver, which can cause the guest to panic. The patchset fixes
the crashes.
The patchset also does some cleanup work: patch 3 removes the useless
hv_pcichild_state, and patch 4 reverts an old patch which is not really
useful (without patch 4, it would be hard to make patch 5 clean).
Patch 6 removes the use of a global mutex lock, and enables async-probing
to allow concurrent device probing for faster boot.
v3 is based on v6.3-rc5. No code change since v2. I just added Michael's
and Long Li's Reviewed-by.
The patchset is also availsble in my github branch:
https://github.com/dcui/tdx/commits/decui/vpci/v6.3-rc5-v3
v2 can be found here:
https://lwn.net/ml/linux-kernel/20230404020545.32359-1-decui@microsoft.com/
Please review. Thanks!
Dexuan Cui (6):
PCI: hv: Fix a race condition bug in hv_pci_query_relations()
PCI: hv: Fix a race condition in hv_irq_unmask() that can cause panic
PCI: hv: Remove the useless hv_pcichild_state from struct hv_pci_dev
Revert "PCI: hv: Fix a timing issue which causes kdump to fail
occasionally"
PCI: hv: Add a per-bus mutex state_lock
PCI: hv: Use async probing to reduce boot time
drivers/pci/controller/pci-hyperv.c | 145 +++++++++++++++++-----------
1 file changed, 86 insertions(+), 59 deletions(-)
--
2.25.1
next reply other threads:[~2023-04-20 2:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-20 2:40 Dexuan Cui [this message]
2023-04-20 2:40 ` [PATCH v3 1/6] PCI: hv: Fix a race condition bug in hv_pci_query_relations() Dexuan Cui
2023-05-25 8:14 ` Lorenzo Pieralisi
2023-06-15 3:55 ` Dexuan Cui
2023-04-20 2:40 ` [PATCH v3 2/6] PCI: hv: Fix a race condition in hv_irq_unmask() that can cause panic Dexuan Cui
2023-05-25 10:15 ` Lorenzo Pieralisi
2023-06-15 4:27 ` Dexuan Cui
2023-04-20 2:40 ` [PATCH v3 3/6] PCI: hv: Remove the useless hv_pcichild_state from struct hv_pci_dev Dexuan Cui
2023-05-25 8:16 ` Lorenzo Pieralisi
2023-06-15 4:36 ` Dexuan Cui
2023-04-20 2:40 ` [PATCH v3 4/6] Revert "PCI: hv: Fix a timing issue which causes kdump to fail occasionally" Dexuan Cui
2023-05-25 8:22 ` Lorenzo Pieralisi
2023-06-15 4:41 ` Dexuan Cui
2023-04-20 2:40 ` [PATCH v3 5/6] PCI: hv: Add a per-bus mutex state_lock Dexuan Cui
2023-05-25 8:27 ` Lorenzo Pieralisi
2023-04-20 2:40 ` [PATCH v3 6/6] PCI: hv: Use async probing to reduce boot time Dexuan Cui
2023-04-23 19:11 ` Simon Horman
2023-04-24 20:50 ` Dexuan Cui
2023-05-10 8:23 ` Lorenzo Pieralisi
2023-05-10 17:12 ` Dexuan Cui
2023-05-17 0:02 ` Dexuan Cui
2023-05-23 19:30 ` Dexuan Cui
2023-04-21 2:04 ` [PATCH v3 0/6] pci-hyper: Fix race condition bugs for fast device hotplug Dexuan Cui
2023-04-21 22:23 ` Dexuan Cui
2023-05-08 16:52 ` Wei Liu
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