| Message ID | 20201008171558.410886-3-jean-philippe@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | virtio-iommu: VFIO integration | expand |
Hi Jean, On 10/8/20 7:15 PM, Jean-Philippe Brucker wrote: > Store the memory region associated to each endpoint into the endpoint > structure, to allow efficient memory notification on map/unmap. > > Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Acked-by: Eric Auger <eric.auger@redhat.com> > --- > Not super confident about the reconstruct_endpoint() change since I > haven't tested migration yet. Does it make sense? It sounds good to me. I tested migration with vhost and this works properly. Eric > --- > hw/virtio/virtio-iommu.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c > index 543fbbb24fb..33115e82186 100644 > --- a/hw/virtio/virtio-iommu.c > +++ b/hw/virtio/virtio-iommu.c > @@ -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; > @@ -927,9 +931,14 @@ 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 */ >
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 543fbbb24fb..33115e82186 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -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; @@ -927,9 +931,14 @@ 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 */
Store the memory region associated to each endpoint into the endpoint structure, to allow efficient memory notification on map/unmap. Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> --- Not super confident about the reconstruct_endpoint() change since I haven't tested migration yet. Does it make sense? --- hw/virtio/virtio-iommu.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)