Re: [libvirt PATCH 0/3] Invalidate the cpu flags cache on changes of kernel command line

On Wed, Aug 11, 2021 at 09:33:08AM -0400, Eduardo Habkost wrote: > Wouldn't it be easier to simply invalidate the cache every time > libvirtd is restarted? If libvirtd keeps /dev/kvm open all the time, > this would also cover features affected by KVM module reloads. Invalidating the cache on every restart defeats the very purpose of having a cache in the first place. Probing for capabilities slows startup of the daemon and that is what required introduction of a cache.