Re: [PATCH v2 22/25] KVM: x86: Allow FRED/LKGS/WRMSRNS to be exposed to guests

On Wed, Feb 07, 2024, Xin Li wrote:

Allow FRED/LKGS/WRMSRNS to be exposed to guests, thus a guest OS could see these features when the guest is configured with FRED/LKGS/WRMSRNS in Qemu.

(a) please describe what these features are, and (b) one patch per feature unless they _must_ be bundled together, in which case there needs to be code to enforce that.

A qemu patch is required to expose FRED/LKGS/WRMSRNS to KVM guests.

Omit this, QEMU is not the only VMM that uses KVM.