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[PATCH v10 04/10] virtio-iommu: Call memory notifiers in attach/detach
From: |
Jean-Philippe Brucker |
Subject: |
[PATCH v10 04/10] virtio-iommu: Call memory notifiers in attach/detach |
Date: |
Thu, 8 Oct 2020 19:15:52 +0200 |
From: Bharat Bhushan <bbhushan2@marvell.com>
Call the memory notifiers when attaching an endpoint to a domain, to
replay existing mappings, and when detaching the endpoint, to remove all
mappings.
Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
v10: Remove notifiers_list, rename callbacks
---
hw/virtio/virtio-iommu.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index fcdf3a819f8..7e6e3cf5200 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -168,11 +168,39 @@ static void virtio_iommu_notify_unmap(IOMMUMemoryRegion
*mr, hwaddr virt_start,
memory_region_notify_iommu(mr, 0, entry);
}
+static gboolean virtio_iommu_notify_unmap_cb(gpointer key, gpointer value,
+ gpointer data)
+{
+ VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
+ IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
+
+ virtio_iommu_notify_unmap(mr, interval->low, interval->high);
+
+ return false;
+}
+
+static gboolean virtio_iommu_notify_map_cb(gpointer key, gpointer value,
+ gpointer data)
+{
+ VirtIOIOMMUMapping *mapping = (VirtIOIOMMUMapping *) value;
+ VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
+ IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
+
+ virtio_iommu_notify_map(mr, interval->low, interval->high,
+ mapping->phys_addr);
+
+ return false;
+}
+
static void virtio_iommu_detach_endpoint_from_domain(VirtIOIOMMUEndpoint *ep)
{
+ VirtIOIOMMUDomain *domain = ep->domain;
+
if (!ep->domain) {
return;
}
+ g_tree_foreach(domain->mappings, virtio_iommu_notify_unmap_cb,
+ ep->iommu_mr);
QLIST_REMOVE(ep, next);
ep->domain = NULL;
}
@@ -315,6 +343,10 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
ep->domain = domain;
+ /* Replay domain mappings on the associated memory region */
+ g_tree_foreach(domain->mappings, virtio_iommu_notify_map_cb,
+ ep->iommu_mr);
+
return VIRTIO_IOMMU_S_OK;
}
--
2.28.0
- [PATCH v10 00/10] virtio-iommu: VFIO integration, Jean-Philippe Brucker, 2020/10/08
- [PATCH v10 01/10] virtio-iommu: Fix virtio_iommu_mr(), Jean-Philippe Brucker, 2020/10/08
- [PATCH v10 04/10] virtio-iommu: Call memory notifiers in attach/detach,
Jean-Philippe Brucker <=
- [PATCH v10 02/10] virtio-iommu: Store memory region in endpoint struct, Jean-Philippe Brucker, 2020/10/08
- [PATCH v10 03/10] virtio-iommu: Add memory notifiers for map/unmap, Jean-Philippe Brucker, 2020/10/08
- [PATCH v10 05/10] virtio-iommu: Add replay() memory region callback, Jean-Philippe Brucker, 2020/10/08
- [PATCH v10 06/10] virtio-iommu: Add notify_flag_changed() memory region callback, Jean-Philippe Brucker, 2020/10/08