I built a Bionic test kernel with the 9 commits posted in the bug description.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1772991
Can you test this kernel and see if it resolves this bug?
Note about installing test kernels:
• If the test kernel is prior to 4.15(Bionic) you need to install the
linux-image and linux-image-extra .deb packages.
• If the test kernel is 4.15(Bionic) or newer, you need to install the
linux-modules, linux-modules-extra and linux-image-unsigned .deb packages.
Thanks in advance!
** Changed in: linux (Ubuntu)
Status: New => In Progress
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) =>
Joseph Salisbury (jsalisbury)
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1772991
Title:
[Ubuntu 18.04.1] POWER9 - Nvidia Volta - Kernel changes to enable
Nvidia driver on bare metal
Status in The Ubuntu-power-systems project:
New
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Bionic:
In Progress
Bug description:
== Comment: #0 - Barry B. Arndt <[email protected]> - 2018-05-23 13:40:33 ==
12 kernel patches have been identified as needed to support Nvidia Volta on
bare metal. All are accepted upstream in 4.17. Three of those are already in
bionic, leaving a total of 9 remaining commits needed in bionic. Those 9
commits are:
720c84046c26 powerpc/npu-dma.c: Fix crash after __mmu_notifier_register
failure
2b74e2a9b39d powerpc/powernv/npu: Fix deadlock in mmio_invalidate()
5ee573e8ef03 powerpc/powernv/mce: Don't silently restart the machine
fb5924fddf9e powerpc/mm: Flush cache on memory hot(un)plug
7fd6641de28f powerpc/powernv/memtrace: Let the arch hotunplug code flush
cache
28a5933e8d36 powerpc/powernv/npu: Add lock to prevent race in concurrent
context init/destroy
a1409adac748 powerpc/powernv/npu: Prevent overwriting of
pnv_npu2_init_contex() callback parameters
d0cf9b561ca9 powerpc/powernv/npu: Do a PID GPU TLB flush when invalidating a
large address range
75ecfb49516c powerpc/mce: Fix a bug where mce loops on memory UE.
We cherry-picked the commits, and all applied cleanly. The resultant
kernel built successfully and loaded.
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