= Testing ppc64el =

== Before the patch ==
ubuntu@cameron:~$ lspci | grep PCIe
0005:05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0005:05:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0005:05:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0005:05:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)

ubuntu@cameron:~$ ls /sys/bus/pci/devices/0005\:05\:00.0/resource*
/sys/bus/pci/devices/0005:05:00.0/resource
/sys/bus/pci/devices/0005:05:00.0/resource0
/sys/bus/pci/devices/0005:05:00.0/resource0_wc
/sys/bus/pci/devices/0005:05:00.0/resource2
/sys/bus/pci/devices/0005:05:00.0/resource2_wc
/sys/bus/pci/devices/0005:05:00.0/resource4
/sys/bus/pci/devices/0005:05:00.0/resource4_wc

== After the patch ==
ubuntu@cameron:~$ uname -a 
Linux cameron 4.10.0-33-generic #37~lp1712580+build.3-Ubuntu SMP Thu Aug 24 
18:56:29 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux

ubuntu@cameron:~$ lspci | grep PCIe
0005:05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0005:05:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0005:05:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0005:05:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)

ubuntu@cameron:~$ ls /sys/bus/pci/devices/0005\:05\:00.0/resource*
/sys/bus/pci/devices/0005:05:00.0/resource
/sys/bus/pci/devices/0005:05:00.0/resource0
/sys/bus/pci/devices/0005:05:00.0/resource0_wc
/sys/bus/pci/devices/0005:05:00.0/resource2
/sys/bus/pci/devices/0005:05:00.0/resource2_wc
/sys/bus/pci/devices/0005:05:00.0/resource4
/sys/bus/pci/devices/0005:05:00.0/resource4_wc


** Description changed:

  [Impact]
  uio device binding inside VM would fail with errors
  EAL: Detected 3 lcore(s)
  EAL: Probing VFIO support...
  EAL: PCI device 0000:00:01.0 on NUMA socket -1
  EAL: probe driver: 1af4:1000 net_virtio
  EAL: Cannot open /sys/bus/pci/devices/0000:00:01.0/resource1: No such file or 
directory
  EAL: Cannot open /sys/bus/pci/devices/0000:00:01.0/resource0: No such file or 
directory
  EAL: Error - exiting with code: 1
    Cause: Requested device 0000:00:01.0 cannot be used
  
  [Fix]
  Fixed in linus kernel 4.13 by patch David Woodhouse (4):
  PCI: Move multiple declarations of pci_mmap_page_range() to <linux/pci.h>
  PCI: Use BAR index in sysfs attr->private instead of resource pointer
  PCI: Add BAR index argument to pci_mmap_page_range()
  PCI: Add pci_mmap_resource_range() and use it for ARM64
  
  [Test]
- Please see comment #3 and comment #4
+ Please see comment #3 and comment #4 for ARM64 testing, and subsequent 
comments for testing on other arches.
  
  [Regression Potential]
  Patch touches PCI subsystem on all architectures, and PCI drivers. Regression 
tested on ARM64.

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1712580

Title:
  [SRU][Zesty]PCI: Add pci_mmap_resource_range() and use it for ARM64

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  [Impact]
  uio device binding inside VM would fail with errors
  EAL: Detected 3 lcore(s)
  EAL: Probing VFIO support...
  EAL: PCI device 0000:00:01.0 on NUMA socket -1
  EAL: probe driver: 1af4:1000 net_virtio
  EAL: Cannot open /sys/bus/pci/devices/0000:00:01.0/resource1: No such file or 
directory
  EAL: Cannot open /sys/bus/pci/devices/0000:00:01.0/resource0: No such file or 
directory
  EAL: Error - exiting with code: 1
    Cause: Requested device 0000:00:01.0 cannot be used

  [Fix]
  Fixed in linus kernel 4.13 by patch David Woodhouse (4):
  PCI: Move multiple declarations of pci_mmap_page_range() to <linux/pci.h>
  PCI: Use BAR index in sysfs attr->private instead of resource pointer
  PCI: Add BAR index argument to pci_mmap_page_range()
  PCI: Add pci_mmap_resource_range() and use it for ARM64

  [Test]
  Please see comment #3 and comment #4 for ARM64 testing, and subsequent 
comments for testing on other arches.

  [Regression Potential]
  Patch touches PCI subsystem on all architectures, and PCI drivers. Regression 
tested on ARM64, ppc64el and AMD64.

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