Since this works (using disable_radix thanks leonardo) in Cosmic and
also through the HWE kernel on Bionic I think there is no more work
needed. The trigger was P9 HW which is fine for this specific (and
uncommon) function to define the HWE kernel as requirement.
** Changed in: qemu (Ubuntu Cosmic)
Status: New => Invalid
** Changed in: linux (Ubuntu Cosmic)
Status: New => Won't Fix
** Changed in: linux (Ubuntu Bionic)
Status: Confirmed => Won't Fix
** Changed in: ubuntu-power-systems
Status: Triaged => Fix Released
** Changed in: linux (Ubuntu Cosmic)
Status: Won't Fix => Fix Released
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https://bugs.launchpad.net/bugs/1778854
Title:
kvm_pr on power9 not loadable
Status in The Ubuntu-power-systems project:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in qemu package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Won't Fix
Status in qemu source package in Bionic:
Invalid
Status in linux source package in Cosmic:
Fix Released
Status in qemu source package in Cosmic:
Invalid
Bug description:
Hi,
this might be the worst bug report ever, but there just isn't a lot more info
available when the issue occurs.
I tried to set up 2nd level KVM on a P9 machine with kvm_pr but I run into
(this is the series on commands I used on P8 btw):
$ sudo modprobe kvm_pr
modprobe: ERROR: could not insert 'kvm_pr': Input/output error
Unfortunately there is no dmesg message (not even with level set to
debug) or anything like it, so I'm stuck asking if P9 does not work
with kvm_pr at all or if there are other constraints one should know?
Note: while no more a problem for kvm_hv on P9 I disabled SMT but the
issue persists.
Modinfo LGTM and matches the kernel:
ubuntu@bionic-kvm:~$ modinfo kvm_pr
filename:
/lib/modules/4.15.0-23-generic/kernel/arch/powerpc/kvm/kvm-pr.ko
alias: devname:kvm
alias: char-major-10-232
license: GPL
srcversion: CE18B50FD03CB9D9C432700
depends: kvm
intree: Y
name: kvm_pr
vermagic: 4.15.0-23-generic SMP mod_unload mprofile-kernel
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
ubuntu@bionic-kvm:~$ uname -a
Linux bionic-kvm 4.15.0-23-generic #25-Ubuntu SMP Wed May 23 17:59:00 UTC
2018 ppc64le ppc64le ppc64le GNU/Linux
It feels more that I'm missing something than a bug, but in that case
I have to ask what it is.
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