> This patch set enables the Intel flexible return and event delivery > (FRED) architecture with KVM VMX to allow guests to utilize FRED. > <snip> > > Intel VMX architecture is extended to run FRED guests, and the major changes > are: > > 1) New VMCS fields for FRED context management, which includes two new > event data VMCS fields, eight new guest FRED context VMCS fields and eight new > host FRED context VMCS fields. > > 2) VMX nested-exception support for proper virtualization of stack levels > introduced with FRED architecture. > <snip> > > Patch 1-2 are cleanups to VMX basic and misc MSRs, which were sent out earlier > as a preparation for FRED changes: > https://lore.kernel.org/kvm/20240206182032.1596-1-xin3.li@xxxxxxxxx/T/#u Obviously I will drop the 2 clean patches in the next iteration. > Patch 3-15 add FRED support to VMX. > Patch 16-21 add FRED support to nested VMX. > Patch 22 exposes FRED and its baseline features to KVM guests. > Patch 23-25 add FRED selftests. Please help to review and comment on the FRED KVM/VMX patches. Thanks! Xin