Public bug reported:
== Comment: #0 - Douglas Miller - 2016-01-12 14:28:48 ==
---Problem Description---
bug from upstream commit 10b35b2b7485c342334a48cf199063eed8b8748e changes
behavior of PCI DMA on PowerNV/bare-metal platforms and can result in EEH when
adapter tries to read back buffer after DMA write.
---uname output---
Affects Wily and Xenial kernel streams. Based on code inspection, not
observation in running kernel
Machine Type = 8348 "Habanero LC"
---Steps to Reproduce---
Setup RAID volume on PMC-Sierra adapter (driver aacraid) and start a
test/exerciser doing disk reads on the volume. Pull a disk from the volume and
an EEH should result.
== Comment: #1 - Douglas Miller - 2016-01-12 14:29:51 ==
Fix is being reviewed and should get pushed upstream soon. Suggest pulling that
fix as soon as it is available. Patch is being reviewed on linuxppc-dev mailing
list, titled "powerpc/ioda: Set "read" permission when "write" is set".
== Comment: #4 - Douglas Miller - 2016-02-22 08:08:43 ==
The fix has been accepted and is now in "master" on linux.git.
commit 6ecad912a0073c768db1491c27ca55ad2d0ee68f
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1548413
Title:
bug from upstream commit changes behavior of PCI DMA on PowerNV/bare-
metal platforms and can result in EEH when adapter tries to read back
buffer after DMA write
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