[PATCH v5 18/26] vhost: add VDUSE callback for IOTLB entry removal
Maxime Coquelin
maxime.coquelin at redhat.com
Tue Jun 6 10:18:44 CEST 2023
This patch implements the VDUSE callback for IOTLB entry
removal, where it unmaps the pages from the invalidated
IOTLB entry.
Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>
---
lib/vhost/vduse.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/lib/vhost/vduse.c b/lib/vhost/vduse.c
index f72c7bf6ab..58c1b384a8 100644
--- a/lib/vhost/vduse.c
+++ b/lib/vhost/vduse.c
@@ -42,6 +42,12 @@
(1ULL << VIRTIO_F_IN_ORDER) | \
(1ULL << VIRTIO_F_IOMMU_PLATFORM))
+static void
+vduse_iotlb_remove_notify(uint64_t addr, uint64_t offset, uint64_t size)
+{
+ munmap((void *)(uintptr_t)addr, offset + size);
+}
+
static int
vduse_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm __rte_unused)
{
@@ -99,6 +105,7 @@ vduse_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm __rte_unuse
static struct vhost_backend_ops vduse_backend_ops = {
.iotlb_miss = vduse_iotlb_miss,
+ .iotlb_remove_notify = vduse_iotlb_remove_notify,
};
int
--
2.40.1
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