Merge tag 'kvm-x86-misc-6.16' of https://github.com/kvm-x86/linux into HEAD

Merge tag 'kvm-x86-misc-6.16' of https://github.com/kvm-x86/linux into HEAD

KVM x86 misc changes for 6.16:

 - Unify virtualization of IBRS on nested VM-Exit, and cross-vCPU IBPB, between
   SVM and VMX.

 - Advertise support to userspace for WRMSRNS and PREFETCHI.

 - Rescan I/O APIC routes after handling EOI that needed to be intercepted due
   to the old/previous routing, but not the new/current routing.

 - Add a module param to control and enumerate support for device posted
   interrupts.

 - Misc cleanups.