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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>
This commit is contained in:
Jean-Philippe Brucker 2020-10-30 19:05:02 +01:00 committed by Michael S. Tsirkin
parent bfe7a96173
commit 31aa323fb9
1 changed files with 10 additions and 1 deletions
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11
hw/virtio/virtio-iommu.c
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@ -49,6 +49,7 @@ typedef struct VirtIOIOMMUDomain {
typedef struct VirtIOIOMMUEndpoint {
uint32_t id;
VirtIOIOMMUDomain *domain;
IOMMUMemoryRegion *iommu_mr;
QLIST_ENTRY(VirtIOIOMMUEndpoint) next;
} VirtIOIOMMUEndpoint;
@ -137,16 +138,19 @@ static VirtIOIOMMUEndpoint *virtio_iommu_get_endpoint(VirtIOIOMMU *s,
uint32_t ep_id)
{
VirtIOIOMMUEndpoint *ep;
IOMMUMemoryRegion *mr;
ep = g_tree_lookup(s->endpoints, GUINT_TO_POINTER(ep_id));
if (ep) {
return ep;
}
if (!virtio_iommu_mr(s, ep_id)) {
mr = virtio_iommu_mr(s, ep_id);
if (!mr) {
return NULL;
}
ep = g_malloc0(sizeof(*ep));
ep->id = ep_id;
ep->iommu_mr = mr;
trace_virtio_iommu_get_endpoint(ep_id);
g_tree_insert(s->endpoints, GUINT_TO_POINTER(ep_id), ep);
return ep;
@ -910,9 +914,14 @@ static gboolean reconstruct_endpoints(gpointer key, gpointer value,
VirtIOIOMMU *s = (VirtIOIOMMU *)data;
VirtIOIOMMUDomain *d = (VirtIOIOMMUDomain *)value;
VirtIOIOMMUEndpoint *iter;
IOMMUMemoryRegion *mr;
QLIST_FOREACH(iter, &d->endpoint_list, next) {
mr = virtio_iommu_mr(s, iter->id);
assert(mr);
iter->domain = d;
iter->iommu_mr = mr;
g_tree_insert(s->endpoints, GUINT_TO_POINTER(iter->id), iter);
}
return false; /* continue the domain traversal */