[PATCH v12 66/84] KVM: LoongArch: Mark "struct page" pfn accessed before dropping mmu_lock
From: Sean Christopherson <seanjc@google.com>
Date: 2024-07-26 23:54:55
Also in:
kvm, kvm-riscv, kvmarm, linux-arm-kernel, linux-mips, linux-riscv, lkml, loongarch
Subsystem:
kernel virtual machine for loongarch (kvm/loongarch), loongarch, the rest · Maintainers:
Tianrui Zhao, Bibo Mao, Huacai Chen, Linus Torvalds
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. 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 52b5c16cf250..230cafa178d7 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;
--
2.46.0.rc1.232.g9752f9e123-goog