On Mon, Feb 10, 2020 at 02:13:19PM +0000, Marc Zyngier wrote: > KVM/arm was merged just over 7 years ago, and has lived a very quiet > life so far. It mostly works if you're prepared to deal with its > limitations, it has been a good prototype for the arm64 version, > but it suffers a few problems: > > - It is incomplete (no debug support, no PMU) > - It hasn't followed any of the architectural evolutions > - It has zero users (I don't count myself here) > - It is more and more getting in the way of new arm64 developments > > So here it is: unless someone screams and shows that they rely on > KVM/arm to be maintained upsteam, I'll remove 32bit host support > form the tree. One of the reasons that makes me confident nobody is > using it is that I never receive *any* bug report. Yes, it is perfect. > But if you depend on KVM/arm being available in mainline, please shout. > > To reiterate: 32bit guest support for arm64 stays, of course. Only > 32bit host goes. Once this is merged, I plan to move virt/kvm/arm to > arm64, and cleanup all the now unnecessary abstractions. > > The patches have been generated with the -D option to avoid spamming > everyone with huge diffs, and there is a kvm-arm/goodbye branch in > my kernel.org repository. > > Marc Zyngier (5): > arm: Unplug KVM from the build system > arm: Remove KVM from config files > arm: Remove 32bit KVM host support > arm: Remove HYP/Stage-2 page-table support > arm: Remove GICv3 vgic compatibility macros FWIW: Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
