LinuxQuestions.org - Current64 - Kernel 5.8 - KVM vs VirtualBox & Vmware

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Current64 - Kernel 5.8 - KVM vs VirtualBox & Vmware

I am an avid VirtualBox user -- my use case being running/testing liveCDs such as my (private) Current64-based fork of PartedMagic.
Kernel 5.8 seems to be a problem for Virtualbox (https://www.virtualbox.org/ticket/19644) as well as VMware (http://rglinuxtech.com/?p=2774).
Therefore (and as I do from time to time) I had a look at KVM/Qemu. I found a qemu package by AlienBob (http://slackware.uk/people/alien/slackbuilds/) as well as one by Conraid (http://slack.conraid.net/repository/...are64-current/). AlienBob has no packages for libvirt or virt-manager, but Conraid has.
Defining/running a simple VM under AlienBob's qemu together with Conraid's libvirt and virt-manager gave a lot of "hardware" problems. Doing so with Conraid's qemu, libvirt and virt-manager was more successful (after a lot of failures - I found things to be less user-friendly than I am used to). Booting my ISO under KVM/Qemu takes longer than under VirtualBox (40 vs 23 seconds). Afterwards both implementations seem to perform comparably.
Google tells me that Gnome Boxes is the next thing after virt-manager. Alas I could not find a package or slackbuild to test things.
Anyone willing to share his/her experiences?
:D

I used ponce's SBo-git repository exclusively to build virt-manager and virt-viewer under current. No issues. See below for my build tree with comments. A number of packages have been added to current since I first went down this path. Also, I installed the deps one-by-one instead of using sqg so that I wouldn't miss anything during the build process.

Code:

gtksourceview3

libosinfo

        └> osinfo-db

                └> osinfo-db-tools

                        └> json-glib *current

        └> vala *current

libvirt-glib

        └> libvirt # modify rc.local/shudown scripts  also review commented rc.libvirt options

                └> avahi # modify rc.local/shutdown scripts also groupadd/useradd per README

                        └> libdaemon

                ├> numactl

                └> yajl

        └> vala *current

libvirt-python

        └> libvirt ^

                └> yajl ^

gtk-vnc

        ├> vala *current

        └> meson *current

spice-gtk

        ├> opus *current

        └> spice

                ├> lz4 *current

                ├> opus *current

                ├> pyparsing *current

                ├> python-six *current

                └> spice-protocol

        ├> usbredir

        └> vala *current

qemu

        ├> spice ^

        ├> device-tree-compiler

        ├> libnfs

        ├> libseccomp

        ├> snappy

        ├> usbredir ^

        ├> vde2

        ├> virglrenderer

        └> SDL2 *current



virt-manager

virt-viewer

        ├> gtk-vnc ^

        ├> libvirt-glib ^

        └> spice-gtk ^



ovmf ---> modify /etc/libvirt/qemu.conf  # per README.sbo ---> enables UEFI

        rm /usr/share/qemu/firmware/*edk* # enable ovmf UEFI entries