diff options
| author | Ben Gardon <bgardon@google.com> | 2021-02-02 10:57:09 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 05:27:38 -0500 |
| commit | 3a9a4aa5657471a02ffb7f9b7f3b7a468b3f257b (patch) | |
| tree | 759f6dbfb36012cb649692f0684c5fa60faf3ea5 | |
| parent | fe43fa2f407b9d513f7bcf18142e14e1bf1508d6 (diff) | |
| download | powerpc-3a9a4aa5657471a02ffb7f9b7f3b7a468b3f257b.tar.gz | |
KVM: x86/mmu: Add lockdep when setting a TDP MMU SPTE
Add lockdep to __tdp_mmu_set_spte to ensure that SPTEs are only modified
under the MMU lock.
No functional change intended.
Reviewed-by: Peter Feiner <pfeiner@google.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20210202185734.1680553-4-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/mmu/tdp_mmu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index ef3d3e058fa05d..05e6e2c4554fbf 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -381,6 +381,8 @@ static inline void __tdp_mmu_set_spte(struct kvm *kvm, struct tdp_iter *iter, struct kvm_mmu_page *root = sptep_to_sp(root_pt); int as_id = kvm_mmu_page_as_id(root); + lockdep_assert_held(&kvm->mmu_lock); + WRITE_ONCE(*iter->sptep, new_spte); __handle_changed_spte(kvm, as_id, iter->gfn, iter->old_spte, new_spte, |