diff options
Diffstat (limited to 'virt/kvm/iommu.c')
| -rw-r--r-- | virt/kvm/iommu.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index 673c88a8efe9..779559552ce7 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -126,9 +126,10 @@ unmap_pages: static int kvm_iommu_map_memslots(struct kvm *kvm) { - int i, r = 0; + int i, idx, r = 0; struct kvm_memslots *slots; + idx = srcu_read_lock(&kvm->srcu); slots = kvm_memslots(kvm); for (i = 0; i < slots->nmemslots; i++) { @@ -136,6 +137,7 @@ static int kvm_iommu_map_memslots(struct kvm *kvm) if (r) break; } + srcu_read_unlock(&kvm->srcu, idx); return r; } @@ -285,15 +287,17 @@ static void kvm_iommu_put_pages(struct kvm *kvm, static int kvm_iommu_unmap_memslots(struct kvm *kvm) { - int i; + int i, idx; struct kvm_memslots *slots; + idx = srcu_read_lock(&kvm->srcu); slots = kvm_memslots(kvm); for (i = 0; i < slots->nmemslots; i++) { kvm_iommu_put_pages(kvm, slots->memslots[i].base_gfn, slots->memslots[i].npages); } + srcu_read_unlock(&kvm->srcu, idx); return 0; } |