> Firecracker is comparable to QEMU; they are both VMMs that utilize KVM, a hypervisor built into the Linux kernel.
That's not accurate: While KVM is mandatory for Firecracker, it isn't for QEMU.
That's not accurate: While KVM is mandatory for Firecracker, it isn't for QEMU.
> Firecracker is comparable to QEMU
This is charitably true. They can be used for similar high-level tasks, and thus they are reasonably comparable.
> that utilize KVM
Both qemu and firecracker use KVM, it happens that qemu supports other hypervisors/options.
"utilize KVM" does not have to be read uncharitably as _only_ uses that.
It shouldn't be a problem for already knowledgeable readers, but it _might_ give false impression that QEMU only works as a KVM-only VMM monitor to others.