Merge branch 'kvm-docs-6.13' into HEAD

- Drop obsolete references to PPC970 KVM, which was removed 10 years ago.

- Fix incorrect references to non-existing ioctls

- List registers supported by KVM_GET/SET_ONE_REG on s390

- Use rST internal links

- Reorganize the introduction to the API document

diff --cc Documentation/virt/kvm/api.rst
Simple merge

diff --cc arch/x86/kvm/lapic.c
Simple merge

diff --cc arch/x86/kvm/svm/sev.c
Simple merge

diff --cc arch/x86/kvm/vmx/nested.c
Simple merge

diff --cc arch/x86/kvm/vmx/vmx.c
Simple merge

diff --cc tools/testing/selftests/kvm/Makefile
Simple merge