This series is really two changes: - patch 1 to 4 clean up optional kvm_x86_ops so that they are marked in kvm-x86-ops.h and the non-optional ones WARN if used incorrectly. As an additional outcome of the review, a few more uses of static_call_cond are introduced. - patch 5 allows to NULL a few kvm_x86_ops that return a value, by using __static_call_ret0. v1->v2: - use KVM_X86_OP_OPTIONAL and KVM_X86_OP_OPTIONAL_RET0 - mark load_eoi_exitmap and set_virtual_apic_mode as optional - fix module compilation of KVM Paolo Bonzini (5): KVM: x86: use static_call_cond for optional callbacks KVM: x86: remove KVM_X86_OP_NULL and mark optional kvm_x86_ops KVM: x86: warn on incorrectly NULL static calls KVM: x86: make several AVIC callbacks optional KVM: x86: allow defining return-0 static calls arch/x86/include/asm/kvm-x86-ops.h | 104 +++++++++++++++-------------- arch/x86/include/asm/kvm_host.h | 11 ++- arch/x86/kvm/lapic.c | 24 +++---- arch/x86/kvm/svm/avic.c | 23 ------- arch/x86/kvm/svm/svm.c | 30 --------- arch/x86/kvm/svm/svm.h | 1 - arch/x86/kvm/x86.c | 16 ++--- kernel/static_call.c | 1 + 8 files changed, 79 insertions(+), 131 deletions(-) -- 2.31.1
