void kvm_propagate_fault(struct kvm_vcpu *vcpu)
{
- u32 nested, error;
-
- error = vcpu->arch.fault.error_code;
- nested = error & PFERR_NESTED_MASK;
- error = error & ~PFERR_NESTED_MASK;
-
- vcpu->arch.fault.error_code = error;
-
- if (mmu_is_nested(vcpu) && !nested)
+ if (mmu_is_nested(vcpu) && !vcpu->arch.fault.nested)
vcpu->arch.nested_mmu.inject_page_fault(vcpu);
else
vcpu->arch.mmu.inject_page_fault(vcpu);
+
+ vcpu->arch.fault.nested = false;
}
void kvm_inject_nmi(struct kvm_vcpu *vcpu)
/*
* The guest calculates current wall clock time by adding
- * system time (updated by kvm_write_guest_time below) to the
+ * system time (updated by kvm_guest_time_update below) to the
* wall clock specified here. guest system time equals host
* system time for us, thus we must fill in host boot time here.
*/
return quotient;
}
-static void kvm_set_time_scale(uint32_t tsc_khz, struct pvclock_vcpu_time_info *hv_clock)
+static void kvm_get_time_scale(uint32_t scaled_khz, uint32_t base_khz,
+ s8 *pshift, u32 *pmultiplier)
{
- uint64_t nsecs = 1000000000LL;
+ uint64_t scaled64;
int32_t shift = 0;
uint64_t tps64;
uint32_t tps32;
- tps64 = tsc_khz * 1000LL;
- while (tps64 > nsecs*2) {
+ tps64 = base_khz * 1000LL;
+ scaled64 = scaled_khz * 1000LL;
+ while (tps64 > scaled64*2 || tps64 & 0xffffffff00000000UL) {
tps64 >>= 1;
shift--;
}
tps32 = (uint32_t)tps64;
- while (tps32 <= (uint32_t)nsecs) {
- tps32 <<= 1;
+ while (tps32 <= scaled64 || scaled64 & 0xffffffff00000000UL) {
+ if (scaled64 & 0xffffffff00000000UL || tps32 & 0x80000000)
+ scaled64 >>= 1;
+ else
+ tps32 <<= 1;
shift++;
}
- hv_clock->tsc_shift = shift;
- hv_clock->tsc_to_system_mul = div_frac(nsecs, tps32);
+ *pshift = shift;
+ *pmultiplier = div_frac(scaled64, tps32);
- pr_debug("%s: tsc_khz %u, tsc_shift %d, tsc_mul %u\n",
- __func__, tsc_khz, hv_clock->tsc_shift,
- hv_clock->tsc_to_system_mul);
+ pr_debug("%s: base_khz %u => %u, shift %d, mul %u\n",
+ __func__, base_khz, scaled_khz, shift, *pmultiplier);
}
static inline u64 get_kernel_ns(void)
}
EXPORT_SYMBOL_GPL(kvm_write_tsc);
-static int kvm_write_guest_time(struct kvm_vcpu *v)
+static int kvm_guest_time_update(struct kvm_vcpu *v)
{
unsigned long flags;
struct kvm_vcpu_arch *vcpu = &v->arch;
local_irq_restore(flags);
if (unlikely(this_tsc_khz == 0)) {
- kvm_make_request(KVM_REQ_KVMCLOCK_UPDATE, v);
+ kvm_make_request(KVM_REQ_CLOCK_UPDATE, v);
return 1;
}
}
if (unlikely(vcpu->hw_tsc_khz != this_tsc_khz)) {
- kvm_set_time_scale(this_tsc_khz, &vcpu->hv_clock);
+ kvm_get_time_scale(NSEC_PER_SEC / 1000, this_tsc_khz,
+ &vcpu->hv_clock.tsc_shift,
+ &vcpu->hv_clock.tsc_to_system_mul);
vcpu->hw_tsc_khz = this_tsc_khz;
}
vcpu->hv_clock.tsc_timestamp = tsc_timestamp;
vcpu->hv_clock.system_time = kernel_ns + v->kvm->arch.kvmclock_offset;
vcpu->last_kernel_ns = kernel_ns;
+ vcpu->last_guest_tsc = tsc_timestamp;
vcpu->hv_clock.flags = 0;
/*
if (!vcpu->time_page)
return 0;
- kvm_make_request(KVM_REQ_KVMCLOCK_UPDATE, v);
+ kvm_make_request(KVM_REQ_CLOCK_UPDATE, v);
return 1;
}
r = 0;
switch (chip->chip_id) {
case KVM_IRQCHIP_PIC_MASTER:
- raw_spin_lock(&pic_irqchip(kvm)->lock);
+ spin_lock(&pic_irqchip(kvm)->lock);
memcpy(&pic_irqchip(kvm)->pics[0],
&chip->chip.pic,
sizeof(struct kvm_pic_state));
- raw_spin_unlock(&pic_irqchip(kvm)->lock);
+ spin_unlock(&pic_irqchip(kvm)->lock);
break;
case KVM_IRQCHIP_PIC_SLAVE:
- raw_spin_lock(&pic_irqchip(kvm)->lock);
+ spin_lock(&pic_irqchip(kvm)->lock);
memcpy(&pic_irqchip(kvm)->pics[1],
&chip->chip.pic,
sizeof(struct kvm_pic_state));
- raw_spin_unlock(&pic_irqchip(kvm)->lock);
+ spin_unlock(&pic_irqchip(kvm)->lock);
break;
case KVM_IRQCHIP_IOAPIC:
r = kvm_set_ioapic(kvm, &chip->chip.ioapic);
access |= PFERR_USER_MASK;
t_gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, gpa, access, &error);
if (t_gpa == UNMAPPED_GVA)
- vcpu->arch.fault.error_code |= PFERR_NESTED_MASK;
+ vcpu->arch.fault.nested = true;
return t_gpa;
}
memcpy(c->regs, vcpu->arch.regs, sizeof c->regs);
}
+int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq)
+{
+ struct decode_cache *c = &vcpu->arch.emulate_ctxt.decode;
+ int ret;
+
+ init_emulate_ctxt(vcpu);
+
+ vcpu->arch.emulate_ctxt.decode.op_bytes = 2;
+ vcpu->arch.emulate_ctxt.decode.ad_bytes = 2;
+ vcpu->arch.emulate_ctxt.decode.eip = vcpu->arch.emulate_ctxt.eip;
+ ret = emulate_int_real(&vcpu->arch.emulate_ctxt, &emulate_ops, irq);
+
+ if (ret != X86EMUL_CONTINUE)
+ return EMULATE_FAIL;
+
+ vcpu->arch.emulate_ctxt.eip = c->eip;
+ memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
+ kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
+ kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
+
+ if (irq == NMI_VECTOR)
+ vcpu->arch.nmi_pending = false;
+ else
+ vcpu->arch.interrupt.pending = false;
+
+ return EMULATE_DONE;
+}
+EXPORT_SYMBOL_GPL(kvm_inject_realmode_interrupt);
+
static int handle_emulation_failure(struct kvm_vcpu *vcpu)
{
++vcpu->stat.insn_emulation_fail;
kvm_mmu_unload(vcpu);
if (kvm_check_request(KVM_REQ_MIGRATE_TIMER, vcpu))
__kvm_migrate_timers(vcpu);
- if (kvm_check_request(KVM_REQ_KVMCLOCK_UPDATE, vcpu)) {
- r = kvm_write_guest_time(vcpu);
+ if (kvm_check_request(KVM_REQ_CLOCK_UPDATE, vcpu)) {
+ r = kvm_guest_time_update(vcpu);
if (unlikely(r))
goto out;
}
git.openpandora.org / pandora-kernel.git / blobdiff