[PATCH v12 70/84] KVM: MIPS: Mark "struct page" pfns accessed prior to dropping mmu_lock

Sean Christopherson seanjc at google.com
Sat Jul 27 09:52:19 AEST 2024


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

Signed-off-by: Sean Christopherson <seanjc at google.com>
---
 arch/mips/kvm/mmu.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c
index f1e4b618ec6d..69463ab24d97 100644
--- a/arch/mips/kvm/mmu.c
+++ b/arch/mips/kvm/mmu.c
@@ -634,10 +634,9 @@ static int kvm_mips_map_page(struct kvm_vcpu *vcpu, unsigned long gpa,
 
 	if (writeable)
 		kvm_set_pfn_dirty(pfn);
-
-	spin_unlock(&kvm->mmu_lock);
 	kvm_release_pfn_clean(pfn);
-	kvm_set_pfn_accessed(pfn);
+
+	spin_unlock(&kvm->mmu_lock);
 out:
 	srcu_read_unlock(&kvm->srcu, srcu_idx);
 	return err;
-- 
2.46.0.rc1.232.g9752f9e123-goog



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