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hypervisor, vmm: introduce trait functions for aarch64 PMU

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The original code uses kvm_device_attr directly outside of the
hyeprvisor crate. That leaks hypervisor details.

No functional change intended.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu
2022-07-20 11:42:24 +00:00
committed by Liu Wei
parent b5d10eb28b
commit f84ddedb1a
3 changed files with 49 additions and 30 deletions
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34
vmm/src/cpu.rs
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@@ -787,41 +787,15 @@ impl CpuManager {
#[cfg(target_arch = "aarch64")]
pub fn init_pmu(&self, irq: u32) -> Result<bool> {
let cpu_attr = kvm_bindings::kvm_device_attr {
group: kvm_bindings::KVM_ARM_VCPU_PMU_V3_CTRL,
attr: u64::from(kvm_bindings::KVM_ARM_VCPU_PMU_V3_INIT),
addr: 0x0,
flags: 0,
};
for cpu in self.vcpus.iter() {
let tmp = irq;
let cpu_attr_irq = kvm_bindings::kvm_device_attr {
group: kvm_bindings::KVM_ARM_VCPU_PMU_V3_CTRL,
attr: u64::from(kvm_bindings::KVM_ARM_VCPU_PMU_V3_IRQ),
addr: &tmp as *const u32 as u64,
flags: 0,
};
let cpu = cpu.lock().unwrap();
// Check if PMU attr is available, if not, log the information.
if cpu.lock().unwrap().vcpu.has_vcpu_attr(&cpu_attr).is_ok() {
// Set irq for PMU
cpu.lock()
.unwrap()
.vcpu
.set_vcpu_attr(&cpu_attr_irq)
.map_err(Error::InitPmu)?;
// Init PMU
cpu.lock()
.unwrap()
.vcpu
.set_vcpu_attr(&cpu_attr)
.map_err(Error::InitPmu)?;
if cpu.vcpu.has_pmu_support() {
cpu.vcpu.init_pmu(irq).map_err(Error::InitPmu)?;
} else {
debug!(
"PMU attribute is not supported in vCPU{}, skip PMU init!",
cpu.lock().unwrap().id
cpu.id
);
return Ok(false);
}