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hv: timer: add calibrate tsc hz by cpuid 0x15

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Get tsc hz by cpuid 0x15 if we supported, otherwise
calibrate tsc by pit timer.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1
2018-04-23 13:24:12 +08:00
committed by Jack Ren
parent cfc87903b2
commit dace32eca1
6 changed files with 50 additions and 21 deletions
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2
hypervisor/include/arch/x86/cpu.h
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@@ -258,8 +258,6 @@ extern struct cpuinfo_x86 boot_cpu_data;
/* Function prototypes */
void cpu_dead(uint32_t logical_id);
uint64_t cpu_cycles_per_second(void);
uint64_t tsc_cycles_in_period(uint16_t timer_period_in_us);
void cpu_secondary_reset(void);
int hv_main(int cpu_id);
bool is_vapic_supported(void);

1
hypervisor/include/arch/x86/timer.h
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@@ -42,5 +42,6 @@ int timer_softirq(int pcpu_id);
void timer_init(void);
void timer_cleanup(void);
void check_tsc(void);
void calibrate_tsc(void);
#endif /* TIMER_H */