#include <linux/bitops.h>
#include <linux/hrtimer.h>
#include <linux/uaccess.h>
+#include <linux/intel-iommu.h>
#include <asm/pgtable.h>
#include <asm/gcc_intrin.h>
#include "iodev.h"
#include "ioapic.h"
#include "lapic.h"
+#include "irq.h"
static unsigned long kvm_vmm_base;
static unsigned long kvm_vsa_base;
switch (ext) {
case KVM_CAP_IRQCHIP:
case KVM_CAP_USER_MEMORY:
+ case KVM_CAP_MP_STATE:
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
break;
+ case KVM_CAP_IOMMU:
+ r = intel_iommu_found();
+ break;
default:
r = 0;
}
struct kvm *kvm = vcpu->kvm;
struct call_data call_data;
int i;
+
call_data.ptc_g_data = p->u.ptc_g_data;
for (i = 0; i < KVM_MAX_VCPUS; i++) {
ktime_t kt;
long itc_diff;
unsigned long vcpu_now_itc;
-
unsigned long expires;
struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
- vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
+ if (irqchip_in_kernel(vcpu->kvm)) {
- if (time_after(vcpu_now_itc, vpd->itm)) {
- vcpu->arch.timer_check = 1;
- return 1;
- }
- itc_diff = vpd->itm - vcpu_now_itc;
- if (itc_diff < 0)
- itc_diff = -itc_diff;
+ vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
+
+ if (time_after(vcpu_now_itc, vpd->itm)) {
+ vcpu->arch.timer_check = 1;
+ return 1;
+ }
+ itc_diff = vpd->itm - vcpu_now_itc;
+ if (itc_diff < 0)
+ itc_diff = -itc_diff;
- expires = div64_u64(itc_diff, cyc_per_usec);
- kt = ktime_set(0, 1000 * expires);
- vcpu->arch.ht_active = 1;
- hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
+ expires = div64_u64(itc_diff, cyc_per_usec);
+ kt = ktime_set(0, 1000 * expires);
+
+ down_read(&vcpu->kvm->slots_lock);
+ vcpu->arch.ht_active = 1;
+ hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
- if (irqchip_in_kernel(vcpu->kvm)) {
vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
kvm_vcpu_block(vcpu);
hrtimer_cancel(p_ht);
vcpu->arch.ht_active = 0;
+ if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests))
+ if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
+ vcpu->arch.mp_state =
+ KVM_MP_STATE_RUNNABLE;
+ up_read(&vcpu->kvm->slots_lock);
+
if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
return -EINTR;
return 1;
static const int kvm_vti_max_exit_handlers =
sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
-static void kvm_prepare_guest_switch(struct kvm_vcpu *vcpu)
-{
-}
-
static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
{
struct exit_ctl_data *p_exit_data;
again:
preempt_disable();
-
- kvm_prepare_guest_switch(vcpu);
local_irq_disable();
if (signal_pending(current)) {
vcpu->guest_mode = 1;
kvm_guest_enter();
-
+ down_read(&vcpu->kvm->slots_lock);
r = vti_vcpu_run(vcpu, kvm_run);
if (r < 0) {
local_irq_enable();
* But we need to prevent reordering, hence this barrier():
*/
barrier();
-
kvm_guest_exit();
-
+ up_read(&vcpu->kvm->slots_lock);
preempt_enable();
r = kvm_handle_exit(kvm_run, vcpu);
if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
kvm_vcpu_block(vcpu);
+ clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
vcpu_put(vcpu);
return -EAGAIN;
}
*/
kvm_build_io_pmt(kvm);
+ INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
+
+ /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
+ set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
}
struct kvm *kvm_arch_create_vm(void)
goto out;
if (irqchip_in_kernel(kvm)) {
mutex_lock(&kvm->lock);
- kvm_ioapic_set_irq(kvm->arch.vioapic,
- irq_event.irq,
- irq_event.level);
+ kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
+ irq_event.irq, irq_event.level);
mutex_unlock(&kvm->lock);
r = 0;
}
struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
if (hrtimer_cancel(p_ht))
- hrtimer_start(p_ht, p_ht->expires, HRTIMER_MODE_ABS);
+ hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
}
static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
wait_queue_head_t *q;
vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
+ q = &vcpu->wq;
+
if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
goto out;
- q = &vcpu->wq;
- if (waitqueue_active(q)) {
- vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
+ if (waitqueue_active(q))
wake_up_interruptible(q);
- }
+
out:
+ vcpu->arch.timer_fired = 1;
vcpu->arch.timer_check = 1;
return HRTIMER_NORESTART;
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
+ kvm_iommu_unmap_guest(kvm);
+#ifdef KVM_CAP_DEVICE_ASSIGNMENT
+ kvm_free_all_assigned_devices(kvm);
+#endif
kfree(kvm->arch.vioapic);
kvm_release_vm_pages(kvm);
kvm_free_physmem(kvm);
int user_alloc)
{
unsigned long i;
- struct page *page;
+ unsigned long pfn;
int npages = mem->memory_size >> PAGE_SHIFT;
struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
unsigned long base_gfn = memslot->base_gfn;
for (i = 0; i < npages; i++) {
- page = gfn_to_page(kvm, base_gfn + i);
- kvm_set_pmt_entry(kvm, base_gfn + i,
- page_to_pfn(page) << PAGE_SHIFT,
- _PAGE_AR_RWX|_PAGE_MA_WB);
- memslot->rmap[i] = (unsigned long)page;
+ pfn = gfn_to_pfn(kvm, base_gfn + i);
+ if (!kvm_is_mmio_pfn(pfn)) {
+ kvm_set_pmt_entry(kvm, base_gfn + i,
+ pfn << PAGE_SHIFT,
+ _PAGE_AR_RWX | _PAGE_MA_WB);
+ memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
+ } else {
+ kvm_set_pmt_entry(kvm, base_gfn + i,
+ GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
+ _PAGE_MA_UC);
+ memslot->rmap[i] = 0;
+ }
}
return 0;
void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
{
int ipi_pcpu = vcpu->cpu;
+ int cpu = get_cpu();
if (waitqueue_active(&vcpu->wq))
wake_up_interruptible(&vcpu->wq);
- if (vcpu->guest_mode)
+ if (vcpu->guest_mode && cpu != ipi_pcpu)
smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
+ put_cpu();
}
int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig)
if (!test_and_set_bit(vec, &vpd->irr[0])) {
vcpu->arch.irq_new_pending = 1;
- if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE)
- kvm_vcpu_kick(vcpu);
- else if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED) {
- vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
- if (waitqueue_active(&vcpu->wq))
- wake_up_interruptible(&vcpu->wq);
- }
+ kvm_vcpu_kick(vcpu);
return 1;
}
return 0;
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
- return 0;
+ return vcpu->arch.timer_fired;
}
gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
- return -EINVAL;
+ vcpu_load(vcpu);
+ mp_state->mp_state = vcpu->arch.mp_state;
+ vcpu_put(vcpu);
+ return 0;
+}
+
+static int vcpu_reset(struct kvm_vcpu *vcpu)
+{
+ int r;
+ long psr;
+ local_irq_save(psr);
+ r = kvm_insert_vmm_mapping(vcpu);
+ if (r)
+ goto fail;
+
+ vcpu->arch.launched = 0;
+ kvm_arch_vcpu_uninit(vcpu);
+ r = kvm_arch_vcpu_init(vcpu);
+ if (r)
+ goto fail;
+
+ kvm_purge_vmm_mapping(vcpu);
+ r = 0;
+fail:
+ local_irq_restore(psr);
+ return r;
}
int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
- return -EINVAL;
+ int r = 0;
+
+ vcpu_load(vcpu);
+ vcpu->arch.mp_state = mp_state->mp_state;
+ if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
+ r = vcpu_reset(vcpu);
+ vcpu_put(vcpu);
+ return r;
}
git.openpandora.org / pandora-kernel.git / blobdiff