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vm-virtio: vhost-user: Factorize SET_MEM_TABLE setup

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By factorizing the setup of the memory table for vhost-user, we
anticipate the fact that vhost-user devices are going to reuse this
function when the guest memory will be updated.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2020-03-23 13:21:39 +01:00 committed by Rob Bradford
parent e54f8ec8a5
commit 7ff82af4b2
1 changed files with 14 additions and 7 deletions
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21
vm-virtio/src/vhost_user/vu_common_ctrl.rs
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@ -27,13 +27,7 @@ pub struct VhostUserConfig {
pub queue_size: u16,
}
pub fn setup_vhost_user_vring(
vu: &mut Master,
mem: &GuestMemoryMmap,
queues: Vec<Queue>,
queue_evts: Vec<EventFd>,
virtio_interrupt: &Arc<dyn VirtioInterrupt>,
) -> Result<Vec<(Option<EventFd>, Queue)>> {
pub fn update_mem_table(vu: &mut Master, mem: &GuestMemoryMmap) -> Result<()> {
let mut regions: Vec<VhostUserMemoryRegionInfo> = Vec::new();
mem.with_regions_mut(|_, region| {
let (mmap_handle, mmap_offset) = match region.file_offset() {
@ -58,6 +52,19 @@ pub fn setup_vhost_user_vring(
vu.set_mem_table(regions.as_slice())
.map_err(Error::VhostUserSetMemTable)?;
Ok(())
}
pub fn setup_vhost_user_vring(
vu: &mut Master,
mem: &GuestMemoryMmap,
queues: Vec<Queue>,
queue_evts: Vec<EventFd>,
virtio_interrupt: &Arc<dyn VirtioInterrupt>,
) -> Result<Vec<(Option<EventFd>, Queue)>> {
// Let's first provide the memory table to the backend.
update_mem_table(vu, mem)?;
let mut vu_interrupt_list = Vec::new();
for (queue_index, queue) in queues.into_iter().enumerate() {