A KVM code cleanup known as KVM Chainsaw is now positioned to move toward the Linux 7.3 merge window. The work centers on a major rework of how KVM handles the kvm_mmu structure, which has been described by developers as a "god data structure" because of how much logic and state it has accumulated.
The update gained momentum after Red Hat engineer and KVM maintainer Paolo Bonzini merged the kvm-chainsaw branch into KVM's next Git branch. That step does not finalize inclusion, but it is a strong sign the patch series is being prepared for upcoming upstream submission.
From the available details, the goal is not a flashy end-user feature but a substantial internal cleanup in the Linux virtualization stack. Refactoring a large and heavily used core structure can make the code easier to maintain, reduce complexity, and help future KVM development move more smoothly.
If the series lands as expected, Linux 7.3 would carry one of the more notable KVM housekeeping efforts of the cycle. For kernel developers and virtualization users, the significance is less about immediate visible changes and more about improving the long-term shape of KVM's memory-management code.
