[SRU][bionic:linux-azure-4.15][PATCH 0/1] UBUNTU: SAUCE: Call trace during nvme storage performance test in bionic/linux-azure 4.15.0-1154

[John Cabaj]

[Impact]

Hypervisor only allocates interrupts to happen on a single physical GPU, which can lead to CPU soft locks when using PCI NVME under heavy load.

[Test Case]

Microsoft tested

[Where things could go wrong]

Hypervisor PCI driver may not load correctly. Patch did not apply cleanly and could lead to merge conflicts once the upstream patch is pulled in.

[Other Info]

SF: #00347669

John Cabaj (1):
  PCI: hv: Only reuse existing IRTE allocation for Multi-MSI

 drivers/pci/host/pci-hyperv.c | 68 +++++++++++++++++++++++++++--------
 1 file changed, 53 insertions(+), 15 deletions(-)

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2.34.1