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Andrew Cooper
b6100a6cd5
NMI and MCE interrupt handlers have no right to modify their exception frame or underlying vcpu registers. Apply liberal quantities of 'const' to 'struct cpu_user_regs *' throughout the codebase. The Double Fault handler, while an IST handler, reloads some extra architectural state back into its regs parameter. As this is for printing purposes and on a terminal error path, the const requirements for #DF are relaxed. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/**
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* @file op_x86_model.h
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* interface to x86 model-specific MSR operations
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*
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* @remark Copyright 2002 OProfile authors
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* @remark Read the file COPYING
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*
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* @author Graydon Hoare
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*/
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#ifndef OP_X86_MODEL_H
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#define OP_X86_MODEL_H
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struct op_msr {
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unsigned long addr;
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uint64_t value;
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};
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struct op_msrs {
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struct op_msr * counters;
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struct op_msr * controls;
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};
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struct pt_regs;
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/* The model vtable abstracts the differences between
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* various x86 CPU model's perfctr support.
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*/
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struct op_x86_model_spec {
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unsigned int num_counters;
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unsigned int num_controls;
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void (*fill_in_addresses)(struct op_msrs * const msrs);
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void (*setup_ctrs)(struct op_msrs const * const msrs);
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int (*check_ctrs)(unsigned int const cpu,
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struct op_msrs const * const msrs,
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struct cpu_user_regs const * const regs);
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void (*start)(struct op_msrs const * const msrs);
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void (*stop)(struct op_msrs const * const msrs);
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int (*is_arch_pmu_msr)(u64 msr_index, int *type, int *index);
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int (*allocated_msr)(struct vcpu *v);
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void (*free_msr)(struct vcpu *v);
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void (*load_msr)(struct vcpu * const v, int type, int index, u64 *msr_content);
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void (*save_msr)(struct vcpu * const v, int type, int index, u64 msr_content);
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};
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extern struct op_x86_model_spec op_ppro_spec;
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extern struct op_x86_model_spec op_arch_perfmon_spec;
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extern struct op_x86_model_spec const op_p4_spec;
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extern struct op_x86_model_spec const op_p4_ht2_spec;
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extern struct op_x86_model_spec const op_athlon_spec;
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extern struct op_x86_model_spec const op_amd_fam15h_spec;
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void arch_perfmon_setup_counters(void);
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extern int ppro_has_global_ctrl;
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extern struct op_x86_model_spec const *model;
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#endif /* OP_X86_MODEL_H */
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