Commit fcbd26d3 authored by Benjamin Berg's avatar Benjamin Berg Committed by Johannes Berg
Browse files

um: virtio_uml: send SET_MEM_TABLE message with the exact size 



The rust based userspace vhost devices are very strict and will not
accept the message if it is longer than required. So, only include the
data for the first memory region.

Signed-off-by: default avatarBenjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20241103212854.1436046-2-benjamin@sipsolutions.net


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent ce6e85a1

arch/um/drivers/virtio_uml.c

+1 −1
Original line number Diff line number Diff line
@@ -623,7 +623,7 @@ static int vhost_user_set_mem_table(struct virtio_uml_device *vu_dev) 
{

	struct vhost_user_msg msg = {

		.header.request = VHOST_USER_SET_MEM_TABLE,

		.header.size = sizeof(msg.payload.mem_regions),

		.header.size = offsetof(typeof(msg.payload.mem_regions), regions[1]),

		.payload.mem_regions.num = 1,

	};

	unsigned long reserved = uml_reserved - uml_physmem;