[virt-tools-list] 2 questions

Hetz Ben Hamo hetz at hetz.biz
Fri Feb 1 14:56:23 UTC 2019


I hope I'm asking in the right place.

First question: I'm using AMD Ryzen 2700 CPU, and the VM's were running
super slow. Checking on the net, most of the docs shows that I should look
at lscpu output which indeed shows that my CPU has SVM. However, it took me
a bit more time to figure out that the kvm_amd module was not loaded
because SVM was disabled in the BIOS, so my question is: Could the VMM team
add a simple check before starting a VM if kvm-intel or kvm_amd modules are
loaded and if not - show a warning message to enable VT-X/SVM on the
BIOS/UEFI please?

Second question: After enabling the SVM in the BIOS and restarting the VMM,
the previously configured VM was still running super-slow. I recreated the
VM and only the new VM was running fast, so I assume that a parameter not
to use the SVM is written in the VM configuration? if so, where can I
change it in the VM configuration GUI? (I thought it was related to the
copy/mode of the CPU, which doesn't change things)

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