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vmm, arch: x86_64: Fill the CPUID leaves with the topology

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There are two CPUID leaves for handling CPU topology, 0xb and 0x1f. The
difference between the two is that the 0x1f leaf (Extended Topology
Leaf) supports exposing multiple die packages.

Fixes: #1284

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2020-06-16 14:48:37 +01:00
committed by Sebastien Boeuf
parent e19079782d
commit a74c6fc14f
2 changed files with 75 additions and 3 deletions
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15
vmm/src/cpu.rs
View File

@@ -11,7 +11,7 @@
// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
//
use crate::config::CpusConfig;
use crate::config::{CpuTopology, CpusConfig};
use crate::device_manager::DeviceManager;
use crate::CPU_MANAGER_SNAPSHOT_ID;
#[cfg(feature = "acpi")]
@@ -686,7 +686,7 @@ impl CpuManager {
let device_manager = device_manager.lock().unwrap();
#[cfg(target_arch = "x86_64")]
let cpuid = CpuManager::patch_cpuid(kvm)?;
let cpuid = CpuManager::patch_cpuid(kvm, &config.topology)?;
let cpu_manager = Arc::new(Mutex::new(CpuManager {
config: config.clone(),
#[cfg(target_arch = "x86_64")]
@@ -725,7 +725,7 @@ impl CpuManager {
}
#[cfg(target_arch = "x86_64")]
fn patch_cpuid(kvm: &Kvm) -> Result<CpuId> {
fn patch_cpuid(kvm: &Kvm, topology: &Option<CpuTopology>) -> Result<CpuId> {
let mut cpuid_patches = Vec::new();
// Patch tsc deadline timer bit
@@ -757,6 +757,15 @@ impl CpuManager {
CpuidPatch::patch_cpuid(&mut cpuid, cpuid_patches);
if let Some(t) = topology {
arch::x86_64::update_cpuid_topology(
&mut cpuid,
t.threads_per_core,
t.cores_per_die,
t.dies_per_package,
);
}
Ok(cpuid)
}