You have been subscribed to a public bug:
== Comment: #0 - Breno Henrique Leitao <bren...@br.ibm.com> - 2016-06-02
13:36:27 ==
---Problem Description---
We are developing a CAPI version of our FPGA gzip compression adapter. We use
AFU directed mode to support multiple processes. Our testcase is opening a huge
number of AFU context and sending small work-requests to the card. After n sec
we close the AFU contexts.
What we observe is that after a while we get a set of AFU contexts,
which do not see interrupts anymore. We have traced the interrupt packet
(msix I guess) to the very low level of the FPGA logic and we strongly
assume that the interrupt packet goes out. Still the Linux kernel is not
seeing the interrupt and our application times out but the work request
was successfully finished.
In order to fix this bug, the follow patches are required:
2bc79ffcbb817873cc43d63118008ab75181b73d cxl: Poll for outstanding IRQs when
detaching a context
d6776bba44d9752f6cdf640046070e71ee4bba7b cxl: Keep IRQ mappings on context
teardown
This request is for Ubuntu 16.04.1
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64 bugnameltc-142126 severity-critical
targetmilestone-inin---
--
CAPI: CGZIP AFU contexts do not receive interrupts after heavy afu open/close
https://bugs.launchpad.net/bugs/1588468
You received this bug notification because you are a member of Kernel Packages,
which is subscribed to linux in Ubuntu.
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
