This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- yakkety' to 'verification-done-yakkety'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1632049 Title: PSL data cache should be flushed before resetting CAPI adapter Status in linux package in Ubuntu: Fix Committed Status in linux source package in Xenial: Fix Committed Status in linux source package in Yakkety: Fix Committed Bug description: ---Problem Description--- The PSL data cache should be flushed before resetting a CAPI adapter. If the PSL data cache holds dirty cache line when it is reset, the host trying to access that memory when the link is down may face a Uncorrectable Error (UE), forcing a reboot of the system. ---uname output--- Linux freak 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:40:06 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux ---Additional Hardware Info--- CAPI adapter needed + AFU image using the PSL cache (e.g. afu_directed memcpy) Machine Type = Tuleta ---Steps to Reproduce--- There's some randomness to it, but triggering a memcpy test + card reset in a loop can produce it: memcpy_afu_ctx -p100 -l1000 echo 1 > /sys/class/cxl/card0/reset Fix is already upstream under commit ID: aaa2245ed836824f21f8e42e0ab63b1637d1cb20 "cxl: Flush PSL cache before resetting the adapter" We would like the fix released for both 16.04 and 16.10 please. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1632049/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp