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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-12-23 14:35:21 -0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 12:35:44 -0300 |
| commit | bc6678a33d9b952981a8e44a4f876c3ad64ca4d8 (patch) | |
| tree | e26027179eb0d76f234509145a395dd6e5910074 /virt/kvm/iommu.c | |
| parent | 3ad26d8139a82b0510b1e0435ee82ae461d33401 (diff) | |
| download | linux-stable-bc6678a33d9b952981a8e44a4f876c3ad64ca4d8.tar.gz linux-stable-bc6678a33d9b952981a8e44a4f876c3ad64ca4d8.tar.bz2 linux-stable-bc6678a33d9b952981a8e44a4f876c3ad64ca4d8.zip | |
KVM: introduce kvm->srcu and convert kvm_set_memory_region to SRCU update
Use two steps for memslot deletion: mark the slot invalid (which stops
instantiation of new shadow pages for that slot, but allows destruction),
then instantiate the new empty slot.
Also simplifies kvm_handle_hva locking.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'virt/kvm/iommu.c')
| -rw-r--r-- | virt/kvm/iommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index cf567d8033db..65a51432c8e5 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -78,7 +78,7 @@ static int kvm_iommu_map_memslots(struct kvm *kvm) int i, r = 0; struct kvm_memslots *slots; - slots = kvm->memslots; + slots = rcu_dereference(kvm->memslots); for (i = 0; i < slots->nmemslots; i++) { r = kvm_iommu_map_pages(kvm, &slots->memslots[i]); @@ -214,7 +214,7 @@ static int kvm_iommu_unmap_memslots(struct kvm *kvm) int i; struct kvm_memslots *slots; - slots = kvm->memslots; + slots = rcu_dereference(kvm->memslots); for (i = 0; i < slots->nmemslots; i++) { kvm_iommu_put_pages(kvm, slots->memslots[i].base_gfn, |