Public bug reported:
SRU Justification
[Impact]
* Request from MSFT to add vPCI fixes from upstream to address kernel
panic
[Fix]
* Backports originally from upstream, with some context changes:
* 440b5e366327: "PCI: hv: Fix a race condition bug in hv_pci_query_relations()"
* 2738d5ab7929: "PCI: hv: Fix a race condition in hv_irq_unmask() that can
cause panic"
* add9195e69c9: "PCI: hv: Remove the useless hv_pcichild_state from struct
hv_pci_dev"
* 067d6ec7ed5b: "PCI: hv: Add a per-bus mutex state_lock"
[Test Plan]
* Compile tested
* Boot tested
* Microsoft tested
[Regression potential]
* Changes isolated, minimal regression risk
[Other info]
* SF #00387397
** Affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-azure (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux-azure (Ubuntu Bionic)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2072588
Title:
Kernel Panic during VM boot with max NICS
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