[Bug 277326] FreeBSD guest on QEMU with Hyper-V enlightenment on is no longer able to detect Hyper-V devices
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Date: Tue, 27 Feb 2024 15:21:05 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277326 --- Comment #4 from Zhenlei Huang <zlei@FreeBSD.org> --- (In reply to Roger Pau Monné from comment #3) > Hm, I guess I'm a bit confused. While debugging PR 274810, I see the behavior, that FreeBSD guests report HyperV rather than KVM when Hyper-V enlightenment is enabled. > If the hypervisor is KVM, shouldn't it be detected as KVM rather than HyperV? I think KVM should be reported. But it seems everything goes right even HyperV is reported. > What's the benefit of using the HyperV enlightenments when running on QEMU/KVM? I think Microsoft people are more familiar with that. When debugging PR 274810 I read briefly the design of Hyper-V virtual devices. I think the design is pretty clear and performant. I see lots of comparing of vm_guest in hyperv device drivers. I guess they should be removed to correctly probe Hyper-V devices, to correctly support Hyper-V enlightenment feature. -- You are receiving this mail because: You are the assignee for the bug.