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hv: pass-thru PMU registers when no PROFILING_ON

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Signed-off-by: Min He <min.he@intel.com>
This commit is contained in:
Min He 2019-02-12 04:54:46 +00:00 committed by wenlingz
parent d9d6ab05f0
commit 328c276152
4 changed files with 47 additions and 0 deletions
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2
hypervisor/arch/x86/guest/vcpuid.c
View File

@ -230,8 +230,10 @@ int32_t set_vcpuid_entries(struct acrn_vm *vm)
break;
/* These features are disabled */
#ifdef PROFILING_ON
/* PMU is not supported */
case 0x0aU:
#endif /* PROFILING_ON */
/* Intel RDT */
case 0x0fU:
case 0x10U:

2
hypervisor/arch/x86/guest/vmsr.c
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@ -110,6 +110,7 @@ static const uint32_t unsupported_msrs[NUM_UNSUPPORTED_MSRS] = {
MSR_SGXOWNEREPOCH0,
MSR_SGXOWNEREPOCH1,
#ifdef PROFILING_ON
/* Performance Counters and Events: CPUID.0AH.EAX[15:8] */
MSR_IA32_PMC0,
MSR_IA32_PMC1,
@ -138,6 +139,7 @@ static const uint32_t unsupported_msrs[NUM_UNSUPPORTED_MSRS] = {
MSR_IA32_PERF_GLOBAL_OVF_CTRL,
MSR_IA32_PERF_GLOBAL_STATUS_SET,
MSR_IA32_PERF_GLOBAL_INUSE,
#endif /* PROFILING_ON */
/* QOS Configuration disabled: CPUID.10H.ECX[2] */
MSR_IA32_L3_QOS_CFG,

8
hypervisor/debug/hypercall.c
View File

@ -61,6 +61,14 @@ static int32_t hcall_profiling_ops(struct acrn_vm *vm, uint64_t cmd, uint64_t pa
}
return ret;
}
#else
static int32_t hcall_profiling_ops(__unused struct acrn_vm *vm, __unused uint64_t cmd, __unused uint64_t param)
{
return -EPERM;
}
#endif /* PROFILING_ON */
/**

35
hypervisor/debug/profiling.c
View File

@ -1446,4 +1446,39 @@ void profiling_setup(void)
dev_dbg(ACRN_DBG_PROFILING, "%s: exiting", __func__);
}
#else
#include <hypervisor.h>
void profiling_vmenter_handler(__unused struct acrn_vcpu *vcpu) {}
void profiling_pre_vmexit_handler(__unused struct acrn_vcpu *vcpu) {}
void profiling_post_vmexit_handler(__unused struct acrn_vcpu *vcpu) {}
static void pmu_passthru_pmi_handler(__unused uint32_t irq, __unused void *data)
{
struct acrn_vcpu *vcpu = get_ever_run_vcpu(get_cpu_id());
msr_write(MSR_IA32_EXT_APIC_LVT_PMI, VECTOR_PMI|LAPIC_LVT_MASK);
vlapic_set_local_intr(vcpu->vm, vcpu->vcpu_id, APIC_LVT_PMC);
msr_write(MSR_IA32_EXT_APIC_LVT_PMI, VECTOR_PMI);
}
void profiling_setup(void)
{
uint16_t cpu;
int32_t retval;
cpu = get_cpu_id();
if (cpu == BOOT_CPU_ID){
retval = request_irq(PMI_IRQ,
pmu_passthru_pmi_handler, NULL, IRQF_NONE);
if (retval < 0) {
pr_err("Failed to add PMI isr");
return;
}
}
msr_write(MSR_IA32_EXT_APIC_LVT_PMI, VECTOR_PMI);
}
#endif