Danny Canter <danny_can...@apple.com> writes: > Joelle is correct, M3 and newer SoCs have support for the EL2 APIs.
Thanks for the confirmation. I'm looking at getting a M4 Mini for my team so we can help review and test patches for HVF going forward. Are you aware of any work that needs doing in the wider QEMU to support nested virt or should it just be a case of doing the plumbing in accel/hvf to turn it on? > > -Danny > >> On Jul 15, 2025, at 8:53 AM, Joelle van Dyne <j...@getutm.app> wrote: >> >> UTM currently supports NV only with the Apple Virtualization backend, >> not QEMU HVF. While M2 supports NV, it is not enabled by XNU kernel >> and `hv_vm_config_get_el2_supported` returns false. I heard there was >> some compatibility issue in the hardware. M3 and newer generations >> fully support NV in hardware and by XNU. >> >> On Tue, Jul 15, 2025 at 4:51 AM Marc Zyngier <m...@kernel.org> wrote: >>> >>> On Tue, 15 Jul 2025 12:15:52 +0100, >>> Alex Bennée <alex.ben...@linaro.org> wrote: >>> >>>> - do we know which Apple silicon supports FEAT_NV2? >>> >>> M2 and latter definitely support FEAT_NV2. That's how KVM NV support >>> has been developed for two years until I was given better HW. >>> >>> Whether Apple supports NV on M2 in HVF, I have no idea. The rumour >>> mill says "no", but I don't have a way to check. The M3 I use at $WORK >>> is definitely able to give me EL2 without VHE with UTM. I haven't >>> played with M4, but I have it on the record that it behaves like M3 >>> with UTM. >>> >>> M. >>> >>> -- >>> Without deviation from the norm, progress is not possible. -- Alex Bennée Virtualisation Tech Lead @ Linaro
