[PATCH v2 0/3] KVM: x86: Convert nested ops to static calls

[Sean Christopherson <seanjc@google.com>]

Convert nested_ops to use static calls, mainly because the nested ops are
bizarrely different than the x86 and PMU ops, and the kvm_x86_ops.nested_ops->
code is an eyesore (IMO).  I haven't bothered to do any performance testing.

v2: In patch 1, keep the get_evmcs_version != NULL check in kvm_get_hv_cpuid(),
    then convert it to a RET0 call in patch 2. [Sashiko]

v1: https://lore.kernel.org/all/20260625233846.3407303-1-seanjc@google.com

Sean Christopherson (3):
  KVM: x86: Reject nested CAP enablement if nested virtualization is
    disabled
  KVM: x86: Add static calls for nested virtualization ops
  KVM: x86: Move nested_ops out of kvm_x86_ops, to global kvm_nested_ops

 arch/x86/include/asm/kvm-x86-nested-ops.h | 36 +++++++++++++
 arch/x86/include/asm/kvm_host.h           | 14 ++++-
 arch/x86/kvm/hyperv.c                     |  6 +--
 arch/x86/kvm/mmu.h                        |  5 +-
 arch/x86/kvm/mmu/paging_tmpl.h            |  2 +-
 arch/x86/kvm/svm/nested.c                 |  2 +-
 arch/x86/kvm/svm/svm.c                    |  4 +-
 arch/x86/kvm/vmx/main.c                   |  3 +-
 arch/x86/kvm/vmx/nested.c                 |  2 +-
 arch/x86/kvm/vmx/vmx.c                    |  1 +
 arch/x86/kvm/x86.c                        | 66 +++++++++++++++--------
 arch/x86/kvm/x86.h                        |  2 +-
 12 files changed, 104 insertions(+), 39 deletions(-)
 create mode 100644 arch/x86/include/asm/kvm-x86-nested-ops.h


base-commit: a204badd8432f93b7e862e7dac6db0fe3d65f370
-- 
2.55.0.rc0.799.gd6f94ed593-goog