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vmm: cpu_manager: Add _PXM ACPI method to each vCPU

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In order to allow a hotplugged vCPU to be assigned to the correct NUMA
node in the guest, the DSDT table must expose the _PXM method for each
vCPU. This method defines the proximity domain to which each vCPU should
be attached to.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2021-06-17 12:41:30 +02:00
parent 09c3ddd47d
commit a36ac96444
3 changed files with 48 additions and 5 deletions
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15
tests/integration.rs
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@@ -2230,7 +2230,7 @@ mod tests {
let kernel_path = direct_kernel_boot_path();
let mut child = GuestCommand::new(&guest)
.args(&["--cpus", "boot=6"])
.args(&["--cpus", "boot=6,max=12"])
.args(&["--memory", "size=0,hotplug_method=virtio-mem"])
.args(&[
"--memory-zone",
@@ -2240,9 +2240,9 @@ mod tests {
])
.args(&[
"--numa",
"guest_numa_id=0,cpus=0-2,distances=1@15:2@20,memory_zones=mem0",
"guest_numa_id=1,cpus=3-4,distances=0@20:2@25,memory_zones=mem1",
"guest_numa_id=2,cpus=5,distances=0@25:1@30,memory_zones=mem2",
"guest_numa_id=0,cpus=0-2:9,distances=1@15:2@20,memory_zones=mem0",
"guest_numa_id=1,cpus=3-4:6-8,distances=0@20:2@25,memory_zones=mem1",
"guest_numa_id=2,cpus=5:10-11,distances=0@25:1@30,memory_zones=mem2",
])
.args(&["--kernel", kernel_path.to_str().unwrap()])
.args(&["--cmdline", DIRECT_KERNEL_BOOT_CMDLINE])
@@ -2285,6 +2285,13 @@ mod tests {
resize_zone_command(&api_socket, "mem2", "4G");
thread::sleep(std::time::Duration::new(5, 0));
assert!(guest.get_numa_node_memory(2).unwrap_or_default() > 3_840_000);
// Resize to the maximum amount of CPUs and check each NUMA
// node has been assigned the right CPUs set.
resize_command(&api_socket, Some(12), None, None);
guest.check_numa_node_cpus(0, vec![0, 1, 2, 9]).unwrap();
guest.check_numa_node_cpus(1, vec![3, 4, 6, 7, 8]).unwrap();
guest.check_numa_node_cpus(2, vec![5, 10, 11]).unwrap();
});
let _ = child.kill();