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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f6d079ce86
pt_cap_get() is required by the upcoming PT support in KVM guests. Export it and move the capabilites enum to a global header. As a global functions, "pt_*" is already used for ptrace and other things, so it makes sense to use "intel_pt_*" as a prefix. Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com> Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
35 lines
910 B
C
35 lines
910 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_INTEL_PT_H
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#define _ASM_X86_INTEL_PT_H
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#define PT_CPUID_LEAVES 2
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#define PT_CPUID_REGS_NUM 4 /* number of regsters (eax, ebx, ecx, edx) */
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enum pt_capabilities {
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PT_CAP_max_subleaf = 0,
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PT_CAP_cr3_filtering,
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PT_CAP_psb_cyc,
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PT_CAP_ip_filtering,
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PT_CAP_mtc,
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PT_CAP_ptwrite,
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PT_CAP_power_event_trace,
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PT_CAP_topa_output,
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PT_CAP_topa_multiple_entries,
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PT_CAP_single_range_output,
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PT_CAP_payloads_lip,
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PT_CAP_num_address_ranges,
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PT_CAP_mtc_periods,
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PT_CAP_cycle_thresholds,
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PT_CAP_psb_periods,
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};
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#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL)
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void cpu_emergency_stop_pt(void);
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extern u32 intel_pt_validate_hw_cap(enum pt_capabilities cap);
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#else
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static inline void cpu_emergency_stop_pt(void) {}
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static inline u32 intel_pt_validate_hw_cap(enum pt_capabilities cap) { return 0; }
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#endif
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#endif /* _ASM_X86_INTEL_PT_H */
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