action #41780
closed
[ppc64] Settings in Qemu 3.0 seem to be troublesome
Added by szarate over 5 years ago.
Updated over 4 years ago.
Category:
Regressions/Crashes
Description
When running a job using Qemu v3 the following error is being shown,
[2018-09-28T09:03:18.0097 EDT] [info] ::: OpenQA::Qemu::Proc::save_state: Saving QEMU state to qemu_state.json
[2018-09-28T09:03:18.0097 EDT] [debug] QEMU: QEMU emulator version 3.0.0 (Virtualization / SLE_12)
[2018-09-28T09:03:18.0097 EDT] [debug] QEMU: Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
[2018-09-28T09:03:18.0098 EDT] [debug] QEMU: qemu-system-ppc64: warning: Failed to set KVM's VSMT mode to 8 (errno -22)
[2018-09-28T09:03:18.0098 EDT] [debug] QEMU: qemu-system-ppc64: KVM does not support 1TiB segments which guest expects
might be related to https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg04742.html although Failed to set KVM's VSMT mode to 8 Looks suspicious enough too
That bug is something completely different though
- Subject changed from Settings in Qemu 3.0 seem to be troublesome to [ppc64] Settings in Qemu 3.0 seem to be troublesome
So this seems to be on ppc64 only for the time being
I faced quite similar error during worker setup on ppc64le on SLE15.
[2018-12-05T06:28:19.240 CET] [debug] QEMU: QEMU emulator version 2.11.2(SUSE Linux Enterprise 15)
[2018-12-05T06:28:19.242 CET] [debug] QEMU: Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
[2018-12-05T06:28:19.243 CET] [debug] QEMU: qemu-system-ppc64: warning: Failed to set KVM's VSMT mode to 8 (errno -22)
[2018-12-05T06:28:19.244 CET] [debug] QEMU: qemu-system-ppc64: KVM implementation does not support Transactional Memory, try cap-htm=off
It is not exactly same (different qemu version and final error), but can be interesting for you.
Created: https://bugzilla.suse.com/show_bug.cgi?id=1118450
Rbrown reported this one for qemu 3.1: https://bugzilla.opensuse.org/show_bug.cgi?id=1121604
"disallowing migration blocker (--only_migratable) for: Nested VMX virtualization does not support live migration yet"
"x86 machines cannot be live-migrated if nested Intel virtualization is enabled. The next version of QEMU will be able to do live migration when nested virtualization is enabled, if supported by the kernel.
I can reproduce something similar on SLE15SP1:
vugava-1:~ # qemu-system-ppc64 -nographic -enable-kvm
qemu-system-ppc64: warning: Failed to set KVM's VSMT mode to 8 (errno -22)
qemu-system-ppc64: KVM does not support 1TiB segments which guest expects
.
vugava-1:~ # qemu-system-ppc64 -version
QEMU emulator version 3.1.0 (SUSE Linux Enterprise 15)
.
vugava-1:~ # lscpu
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 8
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Model: 2.2 (pvr 004e 0202)
Model name: POWER9 (architected), altivec supported
Hypervisor vendor: pHyp
Virtualization type: para
L1d cache: 32K
L1i cache: 32K
L2 cache: 512K
L3 cache: 10240K
NUMA node0 CPU(s): 0-7
Physical sockets: 2
Physical chips: 1
Physical cores/chip: 4
As this is a POWER9 machine, this kernel patch could be related: https://patchwork.kernel.org/patch/10717339/
- Category set to Regressions/Crashes
- Status changed from New to Resolved
- Assignee set to okurz
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