KVM: LoongArch: Mark "struct page" pfn accessed before dropping mmu_lock

Mark pages accessed before dropping mmu_lock when faulting in guest memory
so that LoongArch can convert to kvm_release_faultin_page() without
tripping its lockdep assertion on mmu_lock being held.

Reviewed-by: Bibo Mao <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Message-ID: <[email protected]>

Author: sean-jc

arch/loongarch/kvm/mmu.c

@@ -902,13 +902,13 @@ static int kvm_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, bool write)
 
 	if (writeable)
 		kvm_set_pfn_dirty(pfn);
+	kvm_release_pfn_clean(pfn);
 
 	spin_unlock(&kvm->mmu_lock);
 
 	if (prot_bits & _PAGE_DIRTY)
 		mark_page_dirty_in_slot(kvm, memslot, gfn);
 
-	kvm_release_pfn_clean(pfn);
 out:
 	srcu_read_unlock(&kvm->srcu, srcu_idx);
 	return err;