d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

vhost: register new regions with userfaultfd

Browse Source 
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Maxime Coquelin 2018-10-12 14:40:41 +02:00 committed by Ferruh Yigit
parent 25807d6893
commit 9b62e2da18
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
lib/librte_vhost/vhost_user.c
View File

@ -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,
&reg_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++) {