mirror of https://github.com/xemu-project/xemu.git
virtio-iommu: Store memory region in endpoint struct
Store the memory region associated to each endpoint into the endpoint structure, to allow efficient memory notification on map/unmap. Acked-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Message-Id: <20201030180510.747225-3-jean-philippe@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -49,6 +49,7 @@ typedef struct VirtIOIOMMUDomain {
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typedef struct VirtIOIOMMUEndpoint {
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uint32_t id;
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VirtIOIOMMUDomain *domain;
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IOMMUMemoryRegion *iommu_mr;
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QLIST_ENTRY(VirtIOIOMMUEndpoint) next;
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} VirtIOIOMMUEndpoint;
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@ -137,16 +138,19 @@ static VirtIOIOMMUEndpoint *virtio_iommu_get_endpoint(VirtIOIOMMU *s,
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uint32_t ep_id)
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{
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VirtIOIOMMUEndpoint *ep;
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IOMMUMemoryRegion *mr;
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ep = g_tree_lookup(s->endpoints, GUINT_TO_POINTER(ep_id));
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if (ep) {
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return ep;
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}
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if (!virtio_iommu_mr(s, ep_id)) {
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mr = virtio_iommu_mr(s, ep_id);
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if (!mr) {
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return NULL;
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}
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ep = g_malloc0(sizeof(*ep));
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ep->id = ep_id;
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ep->iommu_mr = mr;
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trace_virtio_iommu_get_endpoint(ep_id);
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g_tree_insert(s->endpoints, GUINT_TO_POINTER(ep_id), ep);
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return ep;
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@ -910,9 +914,14 @@ static gboolean reconstruct_endpoints(gpointer key, gpointer value,
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VirtIOIOMMU *s = (VirtIOIOMMU *)data;
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VirtIOIOMMUDomain *d = (VirtIOIOMMUDomain *)value;
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VirtIOIOMMUEndpoint *iter;
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IOMMUMemoryRegion *mr;
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QLIST_FOREACH(iter, &d->endpoint_list, next) {
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mr = virtio_iommu_mr(s, iter->id);
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assert(mr);
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iter->domain = d;
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iter->iommu_mr = mr;
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g_tree_insert(s->endpoints, GUINT_TO_POINTER(iter->id), iter);
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}
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return false; /* continue the domain traversal */
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