diff options
author | Bharat Bhushan <bbhushan2@marvell.com> | 2020-10-30 19:05:04 +0100 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2020-11-03 07:19:27 -0500 |
commit | 2f6eeb5f0bb1efea09510b9481e2ff82fe69b440 (patch) | |
tree | da726494034f520530122a99b35df58eed6dc917 /hw | |
parent | 15e4c8f01b7f06b9dde13bc13949c834b25160f3 (diff) | |
download | qemu-2f6eeb5f0bb1efea09510b9481e2ff82fe69b440.zip qemu-2f6eeb5f0bb1efea09510b9481e2ff82fe69b440.tar.gz qemu-2f6eeb5f0bb1efea09510b9481e2ff82fe69b440.tar.bz2 |
virtio-iommu: Call memory notifiers in attach/detach
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>
Message-Id: <20201030180510.747225-5-jean-philippe@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/virtio/virtio-iommu.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 7dd15c5..7b64892 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -170,11 +170,39 @@ 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, mapping->flags); + + 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; } @@ -317,6 +345,10 @@ 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; } |