As I'm about to go in turkey mode for a few days, I thought it would be good to let people have a taste of KVM on arm64. At least for those who are not following the same path... So this is the first public drop of KVM/arm64. It supports: - arm and arm64 guests - SMP host and guest - 4kB and 64kB pages (both as a host and as a guest) - Virtual GIC - Architected timers It has been tested on ARMv8 VE model as well as the Foundation Model (after reworking the DTS), using Will Deacon's excellent port of kvmtool to arm64 for the platform emulation side (with virtio for console, block device, networking...). We happily booted guests using the Linaro OE filesystem (64bit) as well Debian and Ubuntu (32bit). It reuses a fair amount of the KVM/arm port source code and general architecture, though there still some work to be done in order to share more code. It currently relies on so much out of tree code that I'm not even trying to post the patches, hence merely signaling the existence of the port. The code sits in a number of (non-stable) branches at git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git - kvm-arm64/pre-arm64-cleanup: Christoffer Dall's kvm-arm-master branch plus a number of patches reorganizing some parts of the KVM/arm code in order to reuse them on arm64. - kvm-arm64/psci: the above, plus the implementation of the Power State Coordination Interface - kvm-arm64/soc-armv8-kvm: a merge of Catalin Marinas' soc-armv8-model branch and the above. - kvm-arm64/soc-armv8-kvm-prereq: the above, plus a bunch of patches adding the KVM prerequisites (including an architected timer rework courtesy of Mark Rutland). - kvm-arm64/soc-armv8-kvm-arm64: The turkey itself. - kvm-arm64/kvmtool: The above, with stuffing, vegs and gravy. Enjoy. The soc-armv8-kvm-arm64 branch contains patches that are roughly split by theme (world switch, MMU, exit handling...), but does not yet reflect the way I intend to split them before review. The code is currently based on v3.7 + kvm-next. Don't try it if you're not prepared to tinker with what is essentially experimental, fast changing and probably broken code (though my tests seem to show that it is solid enough. YMMV). What is missing: - FP access from userspace - COMPAT layer for 32bit userspace As always, comments are welcome, though I may be a bit slow to reply... M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
