Merge branch 'kvm-pre-tdx' into HEAD

- Add common secure TSC infrastructure for use within SNP and in the
  future TDX

- Block KVM_CAP_SYNC_REGS if guest state is protected.  It does not make
  sense to use the capability if the relevant registers are not
  available for reading or writing.

diff --cc arch/x86/include/asm/kvm_host.h
Simple merge

diff --cc arch/x86/kvm/x86.c
index 068fce7,eceb977..c841817
--- 1/arch/x86/kvm/x86.c
--- 2/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@@ -12873,8 -12892,8 +12887,7 @@@ void kvm_arch_destroy_vm(struct kvm *kv
                __x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, 0, 0);
                mutex_unlock(&kvm->slots_lock);
        }
 -      kvm_unload_vcpu_mmus(kvm);
        kvm_destroy_vcpus(kvm);
-       kvm_x86_call(vm_destroy)(kvm);
        kvm_free_msr_filter(srcu_dereference_check(kvm->arch.msr_filter, &kvm->srcu, 1));
        kvm_pic_destroy(kvm);
        kvm_ioapic_destroy(kvm);