[Zesty] [SRU] [PATCH 0/6] soft lockup bug fix Qualcomm Centriq 2400 server.

Manoj Iyer manoj.iyer at canonical.com
Wed May 3 20:31:50 UTC 2017

Booting Ubuntu Zesty (4.10) kernel on Qualcomm Centriq 2400 ARM64 servers
causes soft lockups on multiple CPUs.

The following patches were cleanly cherry-picked from linux-next onto
Zesty 4.10.0-20.22 kernel and tested by me on the QDF2400 SDP at Canonical.

Please consider the following patches for SRU in Zesty to fix the bug

Nate Watterson (1):
  iommu/iova: Fix underflow bug in __alloc_and_insert_iova_range

Robin Murphy (5):
  iommu/dma: Stop getting dma_32bit_pfn wrong
  iommu/dma: Implement PCI allocation optimisation
  iommu/dma: Convert to address-based allocation
  iommu/dma: Clean up MSI IOVA allocation
  iommu/dma: Plumb in the per-CPU IOVA caches

 drivers/iommu/dma-iommu.c | 198 ++++++++++++++++++++++++++--------------------
 drivers/iommu/iova.c      |   2 +-
 2 files changed, 113 insertions(+), 87 deletions(-)


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