44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __KVM_X86_VMX_PMU_INTEL_H
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#define __KVM_X86_VMX_PMU_INTEL_H
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#include <linux/kvm_host.h>
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#include "cpuid.h"
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static inline u64 vcpu_get_perf_capabilities(struct kvm_vcpu *vcpu)
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{
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if (!guest_cpu_cap_has(vcpu, X86_FEATURE_PDCM))
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return 0;
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return vcpu->arch.perf_capabilities;
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}
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static inline bool fw_writes_is_enabled(struct kvm_vcpu *vcpu)
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{
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return (vcpu_get_perf_capabilities(vcpu) & PERF_CAP_FW_WRITES) != 0;
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}
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bool intel_pmu_lbr_is_enabled(struct kvm_vcpu *vcpu);
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int intel_pmu_create_guest_lbr_event(struct kvm_vcpu *vcpu);
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struct lbr_desc {
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/* Basic info about guest LBR records. */
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struct x86_pmu_lbr records;
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/*
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* Emulate LBR feature via passthrough LBR registers when the
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* per-vcpu guest LBR event is scheduled on the current pcpu.
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*
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* The records may be inaccurate if the host reclaims the LBR.
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*/
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struct perf_event *event;
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/* True if LBRs are marked as not intercepted in the MSR bitmap */
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bool msr_passthrough;
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};
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extern struct x86_pmu_lbr vmx_lbr_caps;
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#endif /* __KVM_X86_VMX_PMU_INTEL_H */
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