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

[Seth Forshee]

On Wed, May 03, 2017 at 03:31:50PM -0500, Manoj Iyer wrote:
> 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
> http://bugs.launchpad.net/bugs/1680549
> 
> 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(-)

Clean cherry picks. A bit large, but has been regression tested.

Acked-by: Seth Forshee <seth.forshee at canonical.com>

Applied patches 3-6 to artful/master-next.