You have been subscribed to a public bug: == Comment: #0 - Breno Leitao <bren...@br.ibm.com> - 2017-06-28 16:21:33 == Dear Canonical,
These are some important patches we need into 16.04.3. Without these patches, NVLINK and ATS are broken: NPU2 requires an extra explicit flush to an active GPU PID when sending address translation shoot downs (ATSDs) to reliably flush the GPU TLB. This patch adds just such a flush at the end of each sequence of ATSDs. We can safely use PID 0 which is always reserved and active on the GPU. PID 0 is only used for init_mm which will never be a user mm on the GPU. To enforce this we add a check in pnv_npu2_init_context() just in case someone tries to use PID 0 on the GPU. http://patchwork.ozlabs.org/patch/778160/ "4c3b89e powerpc/powernv: Add sanity checks to pnv_pci_get_{gpu|npu}_dev" introduced explicit warnings in pnv_pci_get_npu_dev() when a PCIe device has no associated device-tree node. However not all PCIe devices have an of_node and pnv_pci_get_npu_dev() gets indirectly called at least once for every PCIe device in the system. This results in spurious WARN_ON()'s so remove it. http://patchwork.ozlabs.org/patch/775595/ ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64le bugnameltc-156217 severity-high targetmilestone-inin16043 -- New NVLINK2 patches https://bugs.launchpad.net/bugs/1701272 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
