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virtio-devices: virtio-mem: Add NUMA support

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Implement support for associating a virtio-mem device with a specific
guest NUMA node, based on the ACPI proximity domain identifier.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2020-09-11 15:09:06 +02:00
parent 0658559880
commit dcedd4cded
2 changed files with 11 additions and 2 deletions
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12
virtio-devices/src/mem.rs
View File

@ -90,6 +90,9 @@ const RESIZE_EVENT: u16 = EPOLL_HELPER_EVENT_LAST + 1;
// New descriptors are pending on the virtio queue.
const QUEUE_AVAIL_EVENT: u16 = EPOLL_HELPER_EVENT_LAST + 2;
// Virtio features
const VIRTIO_MEM_F_ACPI_PXM: u8 = 0;
#[derive(Debug)]
pub enum Error {
// Guest gave us bad memory addresses.
@ -695,6 +698,7 @@ impl Mem {
region: &Arc<GuestRegionMmap>,
resize: Resize,
seccomp_action: SeccompAction,
numa_node_id: Option<u16>,
) -> io::Result<Mem> {
let region_len = region.len();
@ -709,8 +713,7 @@ impl Mem {
));
}
// Fixme: Not support VIRTIO_MEM_F_ACPI_PXM
let avail_features = 1u64 << VIRTIO_F_VERSION_1;
let mut avail_features = 1u64 << VIRTIO_F_VERSION_1;
let mut config = VirtioMemConfig::default();
config.block_size = VIRTIO_MEM_DEFAULT_BLOCK_SIZE;
@ -721,6 +724,11 @@ impl Mem {
config.requested_size + VIRTIO_MEM_USABLE_EXTENT,
);
if let Some(node_id) = numa_node_id {
avail_features |= 1u64 << VIRTIO_MEM_F_ACPI_PXM;
config.node_id = node_id;
}
let host_fd = if let Some(f_offset) = region.file_offset() {
Some(f_offset.file().as_raw_fd())
} else {

1
vmm/src/device_manager.rs
View File

@ -2434,6 +2434,7 @@ impl DeviceManager {
.try_clone()
.map_err(DeviceManagerError::TryCloneVirtioMemResize)?,
self.seccomp_action.clone(),
None,
)
.map_err(DeviceManagerError::CreateVirtioMem)?,
));