From: Sean Christopherson Define kvm_x86_ops .link_external_spt(), .set_external_spte(), and .free_external_spt() as RET0 static calls so that an unexpected call to a a default operation doesn't consume garbage. Fixes: 77ac7079e66d ("KVM: x86/tdp_mmu: Propagate building mirror page tables") Fixes: 94faba8999b9 ("KVM: x86/tdp_mmu: Propagate tearing down mirror page tables") Signed-off-by: Sean Christopherson Signed-off-by: Rick Edgecombe --- arch/x86/include/asm/kvm-x86-ops.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index 3776cf5382a2..31d5c5d58ae6 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -95,9 +95,9 @@ KVM_X86_OP_OPTIONAL_RET0(set_tss_addr) KVM_X86_OP_OPTIONAL_RET0(set_identity_map_addr) KVM_X86_OP_OPTIONAL_RET0(get_mt_mask) KVM_X86_OP(load_mmu_pgd) -KVM_X86_OP_OPTIONAL(link_external_spt) -KVM_X86_OP_OPTIONAL(set_external_spte) -KVM_X86_OP_OPTIONAL(free_external_spt) +KVM_X86_OP_OPTIONAL_RET0(link_external_spt) +KVM_X86_OP_OPTIONAL_RET0(set_external_spte) +KVM_X86_OP_OPTIONAL_RET0(free_external_spt) KVM_X86_OP_OPTIONAL(remove_external_spte) KVM_X86_OP(has_wbinvd_exit) KVM_X86_OP(get_l2_tsc_offset) -- 2.53.0