[PATCH v4 13/22] powerpc/kvm/book3s: Use find_kvm_host_pte in page fault handler
Aneesh Kumar K.V
aneesh.kumar at linux.ibm.com
Tue May 5 17:17:20 AEST 2020
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
---
arch/powerpc/kvm/book3s_64_mmu_hv.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 2b35f9bcf892..38e934dc1714 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -602,12 +602,12 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
* Read the PTE from the process' radix tree and use that
* so we get the shift and attribute bits.
*/
- local_irq_disable();
- ptep = __find_linux_pte(vcpu->arch.pgdir, hva, NULL, &shift);
+ spin_lock(&kvm->mmu_lock);
+ ptep = find_kvm_host_pte(kvm, mmu_seq, hva, &shift)
pte = __pte(0);
if (ptep)
- pte = *ptep;
- local_irq_enable();
+ pte = READ_ONCE(*ptep);
+ spin_unlock(&kvm->mmu_lock);
/*
* If the PTE disappeared temporarily due to a THP
* collapse, just return and let the guest try again.
--
2.26.2
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