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
Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH 0/6] pci-hyper: fix race condition bugs for fast device hotplug
Date: Mon, 27 Mar 2023 21:51:16 -0700 [thread overview]
Message-ID: <20230328045122.25850-1-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.
The patchset is also availsble in my github branch:
https://github.com/dcui/tdx/commits/decui/vpci/v6.3-rc3-v1
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 | 143 +++++++++++++++++-----------
1 file changed, 85 insertions(+), 58 deletions(-)
--
2.25.1
next reply other threads:[~2023-03-28 4:53 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-28 4:51 Dexuan Cui [this message]
2023-03-28 4:51 ` [PATCH 1/6] PCI: hv: fix a race condition bug in hv_pci_query_relations() Dexuan Cui
2023-03-28 5:29 ` [EXTERNAL] " Saurabh Singh Sengar
2023-03-28 5:38 ` Dexuan Cui
2023-03-28 17:24 ` Bjorn Helgaas
2023-03-29 8:37 ` Dexuan Cui
2023-03-29 16:06 ` Bjorn Helgaas
2023-03-28 16:48 ` Long Li
2023-03-29 8:21 ` Dexuan Cui
2023-03-28 4:51 ` [PATCH 2/6] PCI: hv: Fix a race condition in hv_irq_unmask() that can cause panic Dexuan Cui
2023-03-28 4:51 ` [PATCH 3/6] PCI: hv: Remove the useless hv_pcichild_state from struct hv_pci_dev Dexuan Cui
2023-03-28 4:51 ` [PATCH 4/6] Revert "PCI: hv: Fix a timing issue which causes kdump to fail occasionally" Dexuan Cui
2023-03-28 6:33 ` Dexuan Cui
2023-03-28 12:46 ` Wei Hu
2023-03-30 5:17 ` Wei Hu
2023-03-28 4:51 ` [PATCH 5/6] PCI: hv: Add a per-bus mutex state_lock Dexuan Cui
2023-03-29 16:41 ` Michael Kelley (LINUX)
2023-03-29 16:54 ` Dexuan Cui
2023-03-28 4:51 ` [PATCH 6/6] PCI: hv: Use async probing to reduce boot time Dexuan Cui
2023-03-29 16:55 ` Michael Kelley (LINUX)
2023-03-29 22:42 ` Dexuan Cui
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