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/openbmc/linux/arch/x86/kvm/mmu/ |
H A D | tdp_mmu.c | 91303f80 Mon Jun 26 23:26:39 CDT 2023 Like Xu <likexu@tencent.com> KVM: x86/mmu: Move the lockdep_assert of mmu_lock to inside clear_dirty_pt_masked()
Move the lockdep_assert_held_write(&kvm->mmu_lock) from the only one caller kvm_tdp_mmu_clear_dirty_pt_masked() to inside clear_dirty_pt_masked().
This change makes it more obvious why it's safe for clear_dirty_pt_masked() to use the non-atomic (for non-volatile SPTEs) tdp_mmu_clear_spte_bits() helper. for_each_tdp_mmu_root() does its own lockdep, so the only "loss" in lockdep coverage is if the list is completely empty.
Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Like Xu <likexu@tencent.com> Link: https://lore.kernel.org/r/20230627042639.12636-1-likexu@tencent.com Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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