kernel parameter "spectre_v2=retpoline"

Hi, I'm planning to upgrade my installation from CentOS 7.6/oVirt 4.3.5 to CentOS 7.7/oVirt 4.3.7. According to https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/htm... there's a new default setting for Spectre V2 mitigation in new RHEL 7 installs. Shall I switch my hypervisor hosts to this setting when upgrading? Would newly installed CentOS 7 oVirt hosts have that kernel parameter? thx Matthias

On 12 Dec 2019, at 17:38, Matthias Leopold <matthias.leopold@meduniwien.ac.at> wrote:
Hi,
I'm planning to upgrade my installation from CentOS 7.6/oVirt 4.3.5 to CentOS 7.7/oVirt 4.3.7. According to https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/htm... there's a new default setting for Spectre V2 mitigation in new RHEL 7 installs. Shall I switch my hypervisor hosts to this setting when upgrading? Would newly installed CentOS 7 oVirt hosts have that kernel parameter?
Doesn’t the same paragraph describe new install vs upgrade behavior?;) I wouldn’t think Centos is going to be any different .
thx Matthias _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/45OHIHG3JGQQFF...

Am 12.12.19 um 19:20 schrieb Michal Skrivanek:
On 12 Dec 2019, at 17:38, Matthias Leopold <matthias.leopold@meduniwien.ac.at> wrote:
Hi,
I'm planning to upgrade my installation from CentOS 7.6/oVirt 4.3.5 to CentOS 7.7/oVirt 4.3.7. According to https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/htm... there's a new default setting for Spectre V2 mitigation in new RHEL 7 installs. Shall I switch my hypervisor hosts to this setting when upgrading? Would newly installed CentOS 7 oVirt hosts have that kernel parameter?
Doesn’t the same paragraph describe new install vs upgrade behavior?;) I wouldn’t think Centos is going to be any different .
Thanks, I read that, but thought there might some virtualization/oVirt related recommendations or people that already have some experience. Probably I should just believe what I read, worry less and trust my own expertise... Matthias
participants (2)
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Matthias Leopold
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Michal Skrivanek