2:56 p.m.
Hello all.
I'm trying to workaround the problem reported here:
https://gitlab.com/qemu-project/qemu/-/issues/1198
but I did not find out how to start up the VM with the option -machine
smm=off like sead on the lsit above.
I guess that it is possible to run the command using the qemu command but I
think that I will lose the management of it.
It is possible to startup up a VM with this option using the oVirt GUI ou
virsh?
Best regards
--
Atenciosamente,
Kalil de A. Carvalho
9:35 a.m.
On Tue, Jun 18, 2024 at 2:57 PM Kalil de A. Carvalho <kalilac(a)gmail.com>
wrote:
Hello all.
I'm trying to workaround the problem reported here:
https://gitlab.com/qemu-project/qemu/-/issues/1198
but I did not find out how to start up the VM with the option -machine
smm=off like sead on the lsit above.
I guess that it is possible to run the command using the qemu command but
I think that I will lose the management of it.
It is possible to startup up a VM with this option using the oVirt GUI ou
virsh?
I think oVirt allows you only to modify the corresponding "-cpu ..."
options for the corresponding qemu-system-x86_64 executable through edit vm
--> custom properties --> add extra_cpu_flags custom property.
The "-machine ..." options are indirectly set when you choose between
I440FX or one of the Q35 options in Chipset/Firmware Type.
That said, it seems the bug you pointed out has been fixed in kernel 6.2
What kind of OS/kernel are you using in your hypervisors?
Eg in CentOS Stream 9 it seems it has been fixed since 5.14.0-275.el9
* Thu Feb 16 2023 Herton R. Krzesinski <herton(a)redhat.com> [5.14.0-275.el9]
. . .
- KVM: x86: smm: preserve interrupt shadow in SMRAM (Maxim Levitsky)
[2035694]
. . .
Gianluca
3:01 a.m.
Hello,
Did you ever manage to find a workaround to change this parameter? I have a system that is
disconnected and is unable to take a kernel update that may address this so I'm
attempting the workaround as indicated in the issue. kvm.tdp_mmu is N (verified from
/sys/module/kvm/parameters/tdp_mmu) but I'm getting stuck trying to figure out how to
modify the qemu option "-machine smm=off" like you said.
53
days inactive
81
days old
2 comments
3 participants
participants (3)
-
Gianluca Cecchi -
Kalil de A. Carvalho -
rmakhwand＠gmail.com