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update
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@neowutran
neowutran committed Dec 17, 2022
1 parent 4bbfc9b commit f6530be
Showing 1 changed file with 14 additions and 8 deletions.
22 changes: 14 additions & 8 deletions xen/arch/x86/time.c
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Expand Up @@ -275,6 +275,7 @@ void set_time_scale(struct time_scale *ts, u64 ticks_per_sec)

ts->mul_frac = div_frac(MILLISECS(1000), tps32);
ts->shift = shift;
printk("SET_TIME_SCALE: ts->mul_frac: %u ; ts->shift: %u ; ticks_per_sec: %lu \n", ts->mul_frac, ts->shift, ticks_per_sec);
}

static char *freq_string(u64 freq)
Expand Down Expand Up @@ -1379,7 +1380,7 @@ static void __update_vcpu_system_time(struct vcpu *v, int force)
struct vcpu_time_info *u, _u = {};
struct domain *d = v->domain;
s_time_t tsc_stamp;
printk("START __update_vcpu_system_time");
//printk("START __update_vcpu_system_time");

if ( v->vcpu_info == NULL )
return;
Expand All @@ -1391,13 +1392,13 @@ static void __update_vcpu_system_time(struct vcpu *v, int force)
{
s_time_t stime = t->stamp.local_stime;

printk("__update_vcpu_system_time; d->arch.vtsc == true");
//printk("__update_vcpu_system_time; d->arch.vtsc == true");

if ( is_hvm_domain(d) )
{
struct pl_time *pl = v->domain->arch.hvm.pl_time;

printk("__update_vcpu_system_time; d->arch.vtsc == true -> HVM");
//printk("__update_vcpu_system_time; d->arch.vtsc == true -> HVM");

stime += pl->stime_offset + v->arch.hvm.stime_offset;
if ( stime >= 0 )
Expand All @@ -1407,29 +1408,33 @@ static void __update_vcpu_system_time(struct vcpu *v, int force)
}
else{
tsc_stamp = gtime_to_gtsc(d, stime);
printk("__update_vcpu_system_time; d->arch.vtsc == true -> PV");
//printk("__update_vcpu_system_time; d->arch.vtsc == true -> PV");
}

_u.tsc_to_system_mul = d->arch.vtsc_to_ns.mul_frac;
_u.tsc_shift = d->arch.vtsc_to_ns.shift;
printk("__update_vcpu_system_time; tsc_shift: %d ; tsc_to_system_mul: %d", d->arch.vtsc_to_ns.shift, d->arch.vtsc_to_ns.mul_frac);
printk("__update_vcpu_system_time; tsc_shift: %d ; tsc_to_system_mul: %d \n", d->arch.vtsc_to_ns.shift, d->arch.vtsc_to_ns.mul_frac);
}
else
{
printk("__update_vcpu_system_time; d->arch.vtsc == false");
//printk("__update_vcpu_system_time; d->arch.vtsc == false");
if ( is_hvm_domain(d) && hvm_tsc_scaling_supported )
{
printk("__update_vcpu_system_time; d->arch.vtsc == false ; HVM");
tsc_stamp = hvm_scale_tsc(d, t->stamp.local_tsc);
_u.tsc_to_system_mul = d->arch.vtsc_to_ns.mul_frac;
_u.tsc_shift = d->arch.vtsc_to_ns.shift;

tsc_stamp = t->stamp.local_tsc;
_u.tsc_to_system_mul = t->tsc_scale.mul_frac;
_u.tsc_shift = t->tsc_scale.shift;
printk("__update_vcpu_system_time; d->arch.vtsc == false; HVM tsc_shift: %d ; tsc_to_system_mul: %d \n", d->arch.vtsc_to_ns.shift, d->arch.vtsc_to_ns.mul_frac);
}
else
{
printk("__update_vcpu_system_time; d->arch.vtsc == false ; no HVM");
tsc_stamp = t->stamp.local_tsc;
_u.tsc_to_system_mul = t->tsc_scale.mul_frac;
_u.tsc_shift = t->tsc_scale.shift;
printk("__update_vcpu_system_time; d->arch.vtsc == false; NO HVM tsc_shift: %d ; tsc_to_system_mul: %d \n", t->tsc_scale.shift, t->tsc_scale.mul_frac);
}
}

Expand Down Expand Up @@ -1696,6 +1701,7 @@ static void cf_check local_time_calibration(void)
local_irq_disable();
t->tsc_scale.mul_frac = calibration_mul_frac;
t->tsc_scale.shift = tsc_shift;
printk("LOCAL TIME CALIBRATION. mul_frac %u ; shift %u\n", calibration_mul_frac, tsc_shift );
t->stamp = curr;
local_irq_enable();

Expand Down

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