The x86 KVM CPU had been in the cpu/kvm directory, while the arm CPU was inconsistently in the arch/arm directory. This change moves the x86 CPU to be in arch/x86, restoring consistency. This location will make the KVM support more modular, by not having the x86 CPU implementation right alongside the generic implementation. Change-Id: Ia13151f843df8f8877bfef5ff620825877d3dffa Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/52085 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabe.black@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>