[PATCH v4 5/5] vhost_user: Increase number of memory regions

[Pravin M Bathija]

In this patch the number of memory regions are increased from
8 to 128. When a vhost-user front-end such as qemu or libblkio
queries the back-end such as dpdk with the message, get max number
of memory slots, the back-end replies with this number 128 instead
of the previously defined 8. The back-end also allocates that many
slots in the memory table where regions are added/removed as
requested by the vhost-user front-end. This also helps the vhost-
user front-end to limit the number of memory regions when sending
the set mem table message ar adding memory regions. Tested dynamic
add/removal of 128 memory regions with qemu vhost-user front-end
talking to dpdk test-pmd vhost-user back-end.

Signed-off-by: Pravin M Bathija <pravin.bathija at dell.com>
---
 lib/vhost/vhost_user.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
index 5a0e747b58..c6ad5b76d6 100644
--- a/lib/vhost/vhost_user.h
+++ b/lib/vhost/vhost_user.h
@@ -11,7 +11,7 @@
 
 /* refer to hw/virtio/vhost-user.c */
 
-#define VHOST_MEMORY_MAX_NREGIONS 8
+#define VHOST_MEMORY_MAX_NREGIONS 128
 
 #define VHOST_USER_NET_SUPPORTED_FEATURES \
 	(VIRTIO_NET_SUPPORTED_FEATURES | \
-- 
2.43.0