[PATCH v13 67/85] KVM: LoongArch: Mark "struct page" pfn accessed before dropping mmu_lock

Sean Christopherson
2024-10-10T19:41:03Z

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 <maobibo@loongson.cn>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/loongarch/kvm/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c
index ed43504c5c7e..7066cafcce64 100644
--- a/arch/loongarch/kvm/mmu.c
+++ b/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;