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-rw-r--r--virt/kvm/iommu.c8
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;
}