Signed-off-by: Dr. David Alan Gilbert <[email protected]>
Signed-off-by: Maxime Coquelin <[email protected]>
---
lib/librte_vhost/vhost_user.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 051589297..91c301ae2 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -965,6 +965,32 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct
VhostUserMsg *msg,
mmap_size,
alignment,
mmap_offset);
+
+ if (dev->postcopy_listening) {
+#ifdef RTE_LIBRTE_VHOST_POSTCOPY
+ struct uffdio_register reg_struct;
+
+ reg_struct.range.start = (uint64_t)(uintptr_t)mmap_addr;
+ reg_struct.range.len = mmap_size;
+ reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
+
+ if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
+ ®_struct)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Failed to register ufd for region %d:
(ufd = %d) %s\n",
+ i, dev->postcopy_ufd,
+ strerror(errno));
+ goto err_mmap;
+ }
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "\t userfaultfd registered for range : %llx -
%llx\n",
+ reg_struct.range.start,
+ reg_struct.range.start +
+ reg_struct.range.len - 1);
+#else
+ goto err_mmap;
+#endif
+ }
}
for (i = 0; i < dev->nr_vring; i++) {
--
2.17.1
