[PATCH v12 70/84] KVM: MIPS: Mark "struct page" pfns accessed prior to dropping mmu_lock
From: Sean Christopherson <seanjc@google.com>
Date: 2024-07-26 23:55:04
Also in:
kvm, kvm-riscv, kvmarm, linux-arm-kernel, linux-mips, linux-riscv, lkml, loongarch
Subsystem:
kernel virtual machine for mips (kvm/mips), mips, the rest · Maintainers:
Huacai Chen, Thomas Bogendoerfer, Linus Torvalds
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@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