#define VEC_POS(v) ((v) & (32 - 1))
#define REG_POS(v) (((v) >> 5) << 4)
+static unsigned int min_timer_period_us = 500;
+module_param(min_timer_period_us, uint, S_IRUGO | S_IWUSR);
+
static inline u32 apic_get_reg(struct kvm_lapic *apic, int reg_off)
{
return *((u32 *) (apic->regs + reg_off));
result = 1;
break;
default:
- printk(KERN_WARNING "Bad DFR vcpu %d: %08x\n",
- apic->vcpu->vcpu_id, apic_get_reg(apic, APIC_DFR));
+ apic_debug("Bad DFR vcpu %d: %08x\n",
+ apic->vcpu->vcpu_id, apic_get_reg(apic, APIC_DFR));
break;
}
result = (target != source);
break;
default:
- printk(KERN_WARNING "Bad dest shorthand value %x\n",
- short_hand);
+ apic_debug("kvm: apic: Bad dest shorthand value %x\n",
+ short_hand);
break;
}
break;
case APIC_DM_REMRD:
- printk(KERN_DEBUG "Ignoring delivery mode 3\n");
+ apic_debug("Ignoring delivery mode 3\n");
break;
case APIC_DM_SMI:
- printk(KERN_DEBUG "Ignoring guest SMI\n");
+ apic_debug("Ignoring guest SMI\n");
break;
case APIC_DM_NMI:
val = kvm_apic_id(apic) << 24;
break;
case APIC_ARBPRI:
- printk(KERN_WARNING "Access APIC ARBPRI register "
- "which is for P6\n");
+ apic_debug("Access APIC ARBPRI register which is for P6\n");
break;
case APIC_TMCCT: /* Timer CCR */
* scheduler.
*/
if (apic_lvtt_period(apic)) {
- if (apic->lapic_timer.period < NSEC_PER_MSEC/2)
- apic->lapic_timer.period = NSEC_PER_MSEC/2;
+ s64 min_period = min_timer_period_us * 1000LL;
+
+ if (apic->lapic_timer.period < min_period) {
+ pr_info_ratelimited(
+ "kvm: vcpu %i: requested %lld ns "
+ "lapic timer period limited to %lld ns\n",
+ apic->vcpu->vcpu_id, apic->lapic_timer.period,
+ min_period);
+ apic->lapic_timer.period = min_period;
+ }
}
hrtimer_start(&apic->lapic_timer.timer,
case APIC_TDCR:
if (val & 4)
- printk(KERN_ERR "KVM_WRITE:TDCR %x\n", val);
+ apic_debug("KVM_WRITE:TDCR %x\n", val);
apic_set_reg(apic, APIC_TDCR, val);
update_divide_count(apic);
break;
case APIC_ESR:
if (apic_x2apic_mode(apic) && val != 0) {
- printk(KERN_ERR "KVM_WRITE:ESR not zero %x\n", val);
+ apic_debug("KVM_WRITE:ESR not zero %x\n", val);
ret = 1;
}
break;
return 0;
}
+void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu)
+{
+ struct kvm_lapic *apic = vcpu->arch.apic;
+
+ if (apic)
+ apic_reg_write(vcpu->arch.apic, APIC_EOI, 0);
+}
+EXPORT_SYMBOL_GPL(kvm_lapic_set_eoi);
+
void kvm_free_lapic(struct kvm_vcpu *vcpu)
{
if (!vcpu->arch.apic)