On 11/01/21 10:38, Daniel P. Berrangé wrote:
The "-machine" options for accelerators are legacy, the "-accel" options is a better mechanism. The following are the details: https://lore.kernel.org/qemu-devel/3aa73987-40e8-3619-0723-9f17f73850bd@redh...
This patch switch the option "-machine accel=xxx" to "-accel xxx" when specifying accelerator type once libvirt build QEMU command line.
This is going to break use of the /usr/bin/qemu-kvm wrapper on Fedora because QEMU refuses to allow -accel combined with -machine
$ /usr/bin/qemu-kvm -accel tc qemu-system-x86_64: The -accel and "-machine accel=" options are incompatible
That script is useless, a symlink will do ever since QEMU 4.0. Fedora can and should get rid of it, I'll take a look. Is there any other distro that does the same? Libvirt cannot use newer KVM features with "-machine accel". Paolo