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KVM: x86: Make "external SPTE" ops that can fail RET0 static calls

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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: 77ac7079e6 ("KVM: x86/tdp_mmu: Propagate building mirror page tables")
Fixes: 94faba8999 ("KVM: x86/tdp_mmu: Propagate tearing down mirror page tables")
Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Link: https://patch.msgid.link/20260129011517.3545883-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2026-01-28 17:14:36 -08:00
parent a8b2924676
commit e1a31ca28c
1 changed files with 3 additions and 3 deletions
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6
arch/x86/include/asm/kvm-x86-ops.h
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@ -96,9 +96,9 @@ KVM_X86_OP_OPTIONAL_RET0(set_identity_map_addr)
KVM_X86_OP_OPTIONAL_RET0(get_mt_mask)
KVM_X86_OP_OPTIONAL_RET0(tdp_has_smep)
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)