static void kvmclock_vm_state_change(void *opaque, int running,
RunState state)
{
KVMClockState *s = opaque;
CPUState *cpu = first_cpu;
int cap_clock_ctrl = kvm_check_extension(kvm_state, KVM_CAP_KVMCLOCK_CTRL);
int ret;
if (running) {
struct kvm_clock_data data;
s->clock_valid = false;
data.clock = s->clock;
data.flags = 0;
ret = kvm_vm_ioctl(kvm_state, KVM_SET_CLOCK, &data);
if (ret < 0) {
fprintf(stderr, "KVM_SET_CLOCK failed: %s\n", strerror(ret));
abort();
}
if (!cap_clock_ctrl) {
return;
}
for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
ret = kvm_vcpu_ioctl(cpu, KVM_KVMCLOCK_CTRL, 0);
if (ret) {
if (ret != -EINVAL) {
fprintf(stderr, "%s: %s\n", __func__, strerror(-ret));
}
return;
}
}
} else {
struct kvm_clock_data data;
int ret;
if (s->clock_valid) {
return;
}
ret = kvm_vm_ioctl(kvm_state, KVM_GET_CLOCK, &data);
if (ret < 0) {
fprintf(stderr, "KVM_GET_CLOCK failed: %s\n", strerror(ret));
abort();
}
s->clock = data.clock;
/*
* If the VM is stopped, declare the clock state valid to
* avoid re-reading it on next vmsave (which would return
* a different value). Will be reset when the VM is continued.
*/
s->clock_valid = true;
}
}
static void kvm_pit_get(PITCommonState *pit)
{
KVMPITState *s = KVM_PIT(pit);
struct kvm_pit_state2 kpit;
struct kvm_pit_channel_state *kchan;
struct PITChannelState *sc;
int i, ret;
/* No need to re-read the state if VM is stopped. */
if (s->vm_stopped) {
return;
}
if (kvm_has_pit_state2()) {
ret = kvm_vm_ioctl(kvm_state, KVM_GET_PIT2, &kpit);
if (ret < 0) {
fprintf(stderr, "KVM_GET_PIT2 failed: %s\n", strerror(ret));
abort();
}
pit->channels[0].irq_disabled = kpit.flags & KVM_PIT_FLAGS_HPET_LEGACY;
} else {
/*
* kvm_pit_state2 is superset of kvm_pit_state struct,
* so we can use it for KVM_GET_PIT as well.
*/
ret = kvm_vm_ioctl(kvm_state, KVM_GET_PIT, &kpit);
if (ret < 0) {
fprintf(stderr, "KVM_GET_PIT failed: %s\n", strerror(ret));
abort();
}
}
for (i = 0; i < 3; i++) {
kchan = &kpit.channels[i];
sc = &pit->channels[i];
sc->count = kchan->count;
sc->latched_count = kchan->latched_count;
sc->count_latched = kchan->count_latched;
sc->status_latched = kchan->status_latched;
sc->status = kchan->status;
sc->read_state = kchan->read_state;
sc->write_state = kchan->write_state;
sc->write_latch = kchan->write_latch;
sc->rw_mode = kchan->rw_mode;
sc->mode = kchan->mode;
sc->bcd = kchan->bcd;
sc->gate = kchan->gate;
sc->count_load_time = kchan->count_load_time + s->kernel_clock_offset;
}
sc = &pit->channels[0];
sc->next_transition_time =
pit_get_next_transition_time(sc, sc->count_load_time);
}
void kvm_create_irqchip(kvm_context_t kvm)
{
int r;
kvm->irqchip_in_kernel = 0;
#ifdef KVM_CAP_IRQCHIP
if (!kvm->no_irqchip_creation) {
r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_IRQCHIP);
if (r > 0) { /* kernel irqchip supported */
r = kvm_vm_ioctl(kvm_state, KVM_CREATE_IRQCHIP);
if (r >= 0) {
kvm->irqchip_inject_ioctl = KVM_IRQ_LINE;
#if defined(KVM_CAP_IRQ_INJECT_STATUS) && defined(KVM_IRQ_LINE_STATUS)
r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION,
KVM_CAP_IRQ_INJECT_STATUS);
if (r > 0) {
kvm->irqchip_inject_ioctl = KVM_IRQ_LINE_STATUS;
}
#endif
kvm->irqchip_in_kernel = 1;
} else
fprintf(stderr, "Create kernel PIC irqchip failed\n");
}
}
#endif
kvm_state->irqchip_in_kernel = kvm->irqchip_in_kernel;
}
static void kvm_openpic_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *d = SYS_BUS_DEVICE(dev);
KVMOpenPICState *opp = KVM_OPENPIC(dev);
KVMState *s = kvm_state;
int kvm_openpic_model;
struct kvm_create_device cd = {0};
int ret, i;
if (!kvm_check_extension(s, KVM_CAP_DEVICE_CTRL)) {
error_setg(errp, "Kernel is lacking Device Control API");
return;
}
switch (opp->model) {
case OPENPIC_MODEL_FSL_MPIC_20:
kvm_openpic_model = KVM_DEV_TYPE_FSL_MPIC_20;
break;
case OPENPIC_MODEL_FSL_MPIC_42:
kvm_openpic_model = KVM_DEV_TYPE_FSL_MPIC_42;
break;
default:
error_setg(errp, "Unsupported OpenPIC model %" PRIu32, opp->model);
return;
}
cd.type = kvm_openpic_model;
ret = kvm_vm_ioctl(s, KVM_CREATE_DEVICE, &cd);
if (ret < 0) {
error_setg(errp, "Can't create device %d: %s",
cd.type, strerror(errno));
return;
}
opp->fd = cd.fd;
sysbus_init_mmio(d, &opp->mem);
qdev_init_gpio_in(dev, kvm_openpic_set_irq, OPENPIC_MAX_IRQ);
opp->mem_listener.region_add = kvm_openpic_region_add;
opp->mem_listener.region_del = kvm_openpic_region_del;
memory_listener_register(&opp->mem_listener, &address_space_memory);
/* indicate pic capabilities */
msi_nonbroken = true;
kvm_kernel_irqchip = true;
kvm_async_interrupts_allowed = true;
/* set up irq routing */
kvm_init_irq_routing(kvm_state);
for (i = 0; i < 256; ++i) {
kvm_irqchip_add_irq_route(kvm_state, i, 0, i);
}
kvm_msi_via_irqfd_allowed = true;
kvm_gsi_routing_allowed = true;
kvm_irqchip_commit_routes(s);
}
int kvm_set_irq(int irq, int level, int *status)
{
struct kvm_irq_level event;
int r;
if (!kvm_state->irqchip_in_kernel) {
return 0;
}
event.level = level;
event.irq = irq;
r = kvm_vm_ioctl(kvm_state, kvm_state->irqchip_inject_ioctl,
&event);
if (r < 0) {
perror("kvm_set_irq");
}
if (status) {
#ifdef KVM_CAP_IRQ_INJECT_STATUS
*status = (kvm_state->irqchip_inject_ioctl == KVM_IRQ_LINE) ?
1 : event.status;
#else
*status = 1;
#endif
}
return 1;
}
static void kvm_s390_flic_realize(DeviceState *dev, Error **errp)
{
KVMS390FLICState *flic_state = KVM_S390_FLIC(dev);
struct kvm_create_device cd = {0};
struct kvm_device_attr test_attr = {0};
int ret;
flic_state->fd = -1;
if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
trace_flic_no_device_api(errno);
return;
}
cd.type = KVM_DEV_TYPE_FLIC;
ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_DEVICE, &cd);
if (ret < 0) {
trace_flic_create_device(errno);
return;
}
flic_state->fd = cd.fd;
/* Check clear_io_irq support */
test_attr.group = KVM_DEV_FLIC_CLEAR_IO_IRQ;
flic_state->clear_io_supported = !ioctl(flic_state->fd,
KVM_HAS_DEVICE_ATTR, test_attr);
/* Register savevm handler for floating interrupts */
register_savevm(NULL, "s390-flic", 0, 1, kvm_flic_save,
kvm_flic_load, (void *) flic_state);
}
static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot)
{
struct kvm_userspace_memory_region mem;
#ifdef CONFIG_SOLARIS
caddr_t p;
#endif
mem.slot = slot->slot;
mem.guest_phys_addr = slot->start_addr;
mem.memory_size = slot->memory_size;
mem.userspace_addr = (unsigned long)slot->ram;
mem.flags = slot->flags;
#ifdef CONFIG_SOLARIS
/* we need to touch each page, presumably to ensure that
* mlock() will succeed, so we use volatile to ensure it
* doesn't get optimised away
*/
for (p = (caddr_t)mem.userspace_addr;
p < (caddr_t)mem.userspace_addr + mem.memory_size;
p += PAGE_SIZE)
(void) *(volatile char *)p;
#endif /* CONFIG_SOLARIS */
if (s->migration_log) {
mem.flags |= KVM_MEM_LOG_DIRTY_PAGES;
}
return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
}
int kvm_init_vcpu(CPUArchState *env)
{
KVMState *s = kvm_state;
long mmap_size;
int ret;
DPRINTF("kvm_init_vcpu\n");
#ifdef CONFIG_SOLARIS
ret = kvm_vm_clone(kvm_state);
if (ret < 0) {
fprintf(stderr, "kvm_init_vcpu could not clone fd: %m\n");
goto err;
}
env->kvm_fd = ret;
ret = ioctl(env->kvm_fd, KVM_CREATE_VCPU, env->cpu_index);
#else
ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index);
#endif
if (ret < 0) {
DPRINTF("kvm_create_vcpu failed\n");
goto err;
}
#ifndef CONFIG_SOLARIS
env->kvm_fd = ret;
#endif
env->kvm_state = s;
env->kvm_vcpu_dirty = 1;
mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
if (mmap_size < 0) {
ret = mmap_size;
DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
goto err;
}
env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
env->kvm_fd, 0);
if (env->kvm_run == MAP_FAILED) {
ret = -errno;
DPRINTF("mmap'ing vcpu state failed\n");
goto err;
}
if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
s->coalesced_mmio_ring =
(void *)env->kvm_run + s->coalesced_mmio * PAGE_SIZE;
}
ret = kvm_arch_init_vcpu(env);
if (ret == 0) {
qemu_register_reset(kvm_reset_vcpu, env);
kvm_arch_reset_vcpu(env);
}
err:
return ret;
}
int kvm_create_irqchip(KVMState *s)
{
#ifdef KVM_CAP_IRQCHIP
int r;
if (!kvm_irqchip || !kvm_check_extension(s, KVM_CAP_IRQCHIP)) {
return 0;
}
r = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP);
if (r < 0) {
fprintf(stderr, "Create kernel PIC irqchip failed\n");
return r;
}
s->irqchip_inject_ioctl = KVM_IRQ_LINE;
#if defined(KVM_CAP_IRQ_INJECT_STATUS) && defined(KVM_IRQ_LINE_STATUS)
if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
s->irqchip_inject_ioctl = KVM_IRQ_LINE_STATUS;
}
#endif
s->irqchip_in_kernel = 1;
r = kvm_init_irq_routing(s);
if (r < 0) {
return r;
}
#endif
return 0;
}
static void kvm_pic_put(PICCommonState *s)
{
struct kvm_irqchip chip;
struct kvm_pic_state *kpic;
int ret;
chip.chip_id = s->master ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE;
kpic = &chip.chip.pic;
kpic->last_irr = s->last_irr;
kpic->irr = s->irr;
kpic->imr = s->imr;
kpic->isr = s->isr;
kpic->priority_add = s->priority_add;
kpic->irq_base = s->irq_base;
kpic->read_reg_select = s->read_reg_select;
kpic->poll = s->poll;
kpic->special_mask = s->special_mask;
kpic->init_state = s->init_state;
kpic->auto_eoi = s->auto_eoi;
kpic->rotate_on_auto_eoi = s->rotate_on_auto_eoi;
kpic->special_fully_nested_mode = s->special_fully_nested_mode;
kpic->init4 = s->init4;
kpic->elcr = s->elcr;
kpic->elcr_mask = s->elcr_mask;
ret = kvm_vm_ioctl(kvm_state, KVM_SET_IRQCHIP, &chip);
if (ret < 0) {
fprintf(stderr, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret));
abort();
}
}
static int kvmclock_post_load(void *opaque, int version_id)
{
KVMClockState *s = opaque;
struct kvm_clock_data data;
data.clock = s->clock;
data.flags = 0;
return kvm_vm_ioctl(kvm_state, KVM_SET_CLOCK, &data);
}
int kvm_assign_irq(KVMState *s, struct kvm_assigned_irq *assigned_irq)
{
int ret;
ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_ASSIGN_DEV_IRQ);
if (ret > 0) {
return kvm_vm_ioctl(s, KVM_ASSIGN_DEV_IRQ, assigned_irq);
}
return kvm_old_assign_irq(s, assigned_irq);
}
int kvm_get_dirty_fb_lines(short *rettable, int table_size_in_bytes)
{
struct kvm_dirty_log d;
unsigned int i, j;
unsigned long page_number, addr, c;
int known_start = 0;
/* no fb mapped */
if (fb_slot == -1)
return 0;
rettable[0] = 0; // starting y
rettable[1] = fb_height - 1; // ending y
memset(fb_bitmap, 0, fb_len);
d.dirty_bitmap = fb_bitmap;
d.slot = fb_slot;
if (kvm_vm_ioctl(KVM_GET_DIRTY_LOG, &d) == -1) {
/* failed -> expose all screen as updated */
return 1;
}
rettable[1] = 0;
for (i = 0; i < fb_len; i++) {
if (fb_bitmap[i] != 0) {
c = bswap_32(fb_bitmap[i]);
do {
j = ffsl(c) - 1;
c &= ~(1ul << j);
page_number = i * 32 + j;
addr = page_number * TARGET_PAGE_SIZE;
if (!known_start) {
rettable[0] = addr / fb_bytes_per_row;
known_start = 1;
}
rettable[1] = ((addr + TARGET_PAGE_SIZE) / fb_bytes_per_row);
} while (c != 0);
}
}
/* not dirty */
if (rettable[0] == rettable[1])
return 0;
/* cap on fb_height */
if (rettable[1] > (fb_height - 1))
rettable[1] = (fb_height - 1);
return 1;
}
/**
* kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
* This function updates qemu's dirty bitmap using
* memory_region_set_dirty(). This means all bits are set
* to dirty.
*
* @start_add: start of logged region.
* @end_addr: end of logged region.
*/
static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section)
{
KVMState *s = kvm_state;
unsigned long size, allocated_size = 0;
KVMDirtyLog d;
KVMSlot *mem;
int ret = 0;
target_phys_addr_t start_addr = section->offset_within_address_space;
target_phys_addr_t end_addr = start_addr + section->size;
d.dirty_bitmap = NULL;
while (start_addr < end_addr) {
mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr);
if (mem == NULL) {
break;
}
/* XXX bad kernel interface alert
* For dirty bitmap, kernel allocates array of size aligned to
* bits-per-long. But for case when the kernel is 64bits and
* the userspace is 32bits, userspace can't align to the same
* bits-per-long, since sizeof(long) is different between kernel
* and user space. This way, userspace will provide buffer which
* may be 4 bytes less than the kernel will use, resulting in
* userspace memory corruption (which is not detectable by valgrind
* too, in most cases).
* So for now, let's align to 64 instead of HOST_LONG_BITS here, in
* a hope that sizeof(long) wont become >8 any time soon.
*/
size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS),
/*HOST_LONG_BITS*/ 64) / 8;
if (!d.dirty_bitmap) {
d.dirty_bitmap = g_malloc(size);
} else if (size > allocated_size) {
d.dirty_bitmap = g_realloc(d.dirty_bitmap, size);
}
allocated_size = size;
memset(d.dirty_bitmap, 0, allocated_size);
d.slot = mem->slot;
if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) {
DPRINTF("ioctl failed %d\n", errno);
ret = -1;
break;
}
kvm_get_dirty_pages_log_range(section, d.dirty_bitmap);
start_addr = mem->start_addr + mem->memory_size;
}
g_free(d.dirty_bitmap);
return ret;
}
int kvm_assign_irq(kvm_context_t kvm, struct kvm_assigned_irq *assigned_irq)
{
int ret;
ret = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_ASSIGN_DEV_IRQ);
if (ret > 0) {
return kvm_vm_ioctl(kvm_state, KVM_ASSIGN_DEV_IRQ, assigned_irq);
}
return kvm_old_assign_irq(kvm, assigned_irq);
}
static int kvm_enable_tpr_access_reporting(CPUState *env)
{
int r;
struct kvm_tpr_access_ctl tac = { .enabled = 1 };
r = kvm_ioctl(env->kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_VAPIC);
if (r <= 0)
return -ENOSYS;
return kvm_vcpu_ioctl(env, KVM_TPR_ACCESS_REPORTING, &tac);
}
#endif
#ifdef KVM_CAP_ADJUST_CLOCK
static struct kvm_clock_data kvmclock_data;
static void kvmclock_pre_save(void *opaque)
{
struct kvm_clock_data *cl = opaque;
kvm_vm_ioctl(kvm_state, KVM_GET_CLOCK, cl);
}
static int kvmclock_post_load(void *opaque, int version_id)
{
struct kvm_clock_data *cl = opaque;
return kvm_vm_ioctl(kvm_state, KVM_SET_CLOCK, cl);
}
static const VMStateDescription vmstate_kvmclock= {
.name = "kvmclock",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.pre_save = kvmclock_pre_save,
.post_load = kvmclock_post_load,
.fields = (VMStateField []) {
VMSTATE_U64(clock, struct kvm_clock_data),
VMSTATE_END_OF_LIST()
}
};
static int kvm_set_boot_vcpu_id(kvm_context_t kvm, uint32_t id)
{
#ifdef KVM_CAP_SET_BOOT_CPU_ID
int r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_SET_BOOT_CPU_ID);
if (r > 0) {
return kvm_vm_ioctl(kvm_state, KVM_SET_BOOT_CPU_ID, id);
}
return -ENOSYS;
#else
return -ENOSYS;
#endif
}
static void kvm_get_smmu_info(CPUPPCState *env, struct kvm_ppc_smmu_info *info)
{
int ret;
if (kvm_check_extension(env->kvm_state, KVM_CAP_PPC_GET_SMMU_INFO)) {
ret = kvm_vm_ioctl(env->kvm_state, KVM_PPC_GET_SMMU_INFO, info);
if (ret == 0) {
return;
}
}
kvm_get_fallback_smmu_info(env, info);
}
int kvm_set_irqchip(kvm_context_t kvm, struct kvm_irqchip *chip)
{
int r;
if (!kvm->irqchip_in_kernel) {
return 0;
}
r = kvm_vm_ioctl(kvm_state, KVM_SET_IRQCHIP, chip);
if (r < 0) {
perror("kvm_set_irqchip\n");
}
return r;
}
int kvm_set_irqchip(KVMState *s, struct kvm_irqchip *chip)
{
int r;
if (!s->irqchip_in_kernel) {
return 0;
}
r = kvm_vm_ioctl(s, KVM_SET_IRQCHIP, chip);
if (r < 0) {
perror("kvm_set_irqchip\n");
}
return r;
}
int kvm_get_shadow_pages(kvm_context_t kvm, unsigned int *nrshadow_pages)
{
#ifdef KVM_CAP_MMU_SHADOW_CACHE_CONTROL
int r;
r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION,
KVM_CAP_MMU_SHADOW_CACHE_CONTROL);
if (r > 0) {
*nrshadow_pages = kvm_vm_ioctl(kvm_state, KVM_GET_NR_MMU_PAGES);
return 0;
}
#endif
return -1;
}
static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot)
{
struct kvm_userspace_memory_region mem;
mem.slot = slot->slot;
mem.guest_phys_addr = slot->start_addr;
mem.memory_size = slot->memory_size;
mem.userspace_addr = (unsigned long)slot->ram;
mem.flags = slot->flags;
if (s->migration_log) {
mem.flags |= KVM_MEM_LOG_DIRTY_PAGES;
}
return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
}
static void kvm_get_smmu_info(PowerPCCPU *cpu, struct kvm_ppc_smmu_info *info)
{
CPUState *cs = CPU(cpu);
int ret;
if (kvm_check_extension(cs->kvm_state, KVM_CAP_PPC_GET_SMMU_INFO)) {
ret = kvm_vm_ioctl(cs->kvm_state, KVM_PPC_GET_SMMU_INFO, info);
if (ret == 0) {
return;
}
}
kvm_get_fallback_smmu_info(cpu, info);
}
int kvm_reinject_control(KVMState *s, int pit_reinject)
{
#ifdef KVM_CAP_REINJECT_CONTROL
int r;
struct kvm_reinject_control control;
control.pit_reinject = pit_reinject;
r = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_REINJECT_CONTROL);
if (r > 0) {
return kvm_vm_ioctl(s, KVM_REINJECT_CONTROL, &control);
}
#endif
return -ENOSYS;
}
int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
{
int ret = -ENOSYS;
KVMState *s = kvm_state;
if (s->coalesced_mmio) {
struct kvm_coalesced_mmio_zone zone;
zone.addr = start;
zone.size = size;
ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
}
return ret;
}
static void
sev_ram_block_removed(RAMBlockNotifier *n, void *host, size_t size)
{
int r;
struct kvm_enc_region range;
range.addr = (__u64)(unsigned long)host;
range.size = size;
trace_kvm_memcrypt_unregister_region(host, size);
r = kvm_vm_ioctl(kvm_state, KVM_MEMORY_ENCRYPT_UNREG_REGION, &range);
if (r) {
error_report("%s: failed to unregister region (%p+%#zx)",
__func__, host, size);
}
}
int kvm_init(void)
{
long mmap_size;
struct kvm_enable_cap cap;
int r;
kvm_fd = open("/dev/kvm", O_RDWR);
if (kvm_fd < 0) {
fprintf(stderr, "KVM: Couldn't open /dev/kvm\n");
return -1;
}
vm_fd = kvm_ioctl(KVM_CREATE_VM, 0);
if (vm_fd < 0) {
fprintf(stderr, "KVM: Couldn't create VM\n");
return -1;
}
vcpu_fd = kvm_vm_ioctl(KVM_CREATE_VCPU, 0);
if (vcpu_fd < 0) {
fprintf(stderr, "kvm_create_vcpu failed\n");
return -1;
}
memset(&cap, 0, sizeof(cap));
cap.cap = KVM_CAP_PPC_OSI;
r = kvm_vcpu_ioctl(KVM_ENABLE_CAP, &cap);
if (r < 0) {
fprintf(stderr, "kvm_enable_cap failed\n");
return -1;
}
mmap_size = kvm_ioctl(KVM_GET_VCPU_MMAP_SIZE, 0);
if (mmap_size < 0) {
fprintf(stderr, "KVM_GET_VCPU_MMAP_SIZE failed\n");
return -1;
}
kvm_run = (struct kvm_run *)mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
MAP_SHARED, vcpu_fd, 0);
if (kvm_run == MAP_FAILED) {
fprintf(stderr, "mmap'ing vcpu state failed\n");
return -1;
}
return 0;
}
static void kvm_create_vcpu(CPUState *env, int id)
{
long mmap_size;
int r;
KVMState *s = kvm_state;
r = kvm_vm_ioctl(kvm_state, KVM_CREATE_VCPU, id);
if (r < 0) {
fprintf(stderr, "kvm_create_vcpu: %m\n");
fprintf(stderr, "Failed to create vCPU. Check the -smp parameter.\n");
goto err;
}
env->kvm_fd = r;
env->kvm_state = kvm_state;
mmap_size = kvm_ioctl(kvm_state, KVM_GET_VCPU_MMAP_SIZE, 0);
if (mmap_size < 0) {
fprintf(stderr, "get vcpu mmap size: %m\n");
goto err_fd;
}
env->kvm_run =
mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, env->kvm_fd,
0);
if (env->kvm_run == MAP_FAILED) {
fprintf(stderr, "mmap vcpu area: %m\n");
goto err_fd;
}
#ifdef KVM_CAP_COALESCED_MMIO
if (s->coalesced_mmio && !s->coalesced_mmio_ring)
s->coalesced_mmio_ring = (void *) env->kvm_run +
s->coalesced_mmio * PAGE_SIZE;
#endif
r = kvm_arch_init_vcpu(env);
if (r == 0) {
qemu_register_reset(kvm_reset_vcpu, env);
}
return;
err_fd:
close(env->kvm_fd);
err:
/* We're no good with semi-broken states. */
abort();
}
int kvm_irqchip_set_irq(KVMState *s, int irq, int level)
{
struct kvm_irq_level event;
int ret;
assert(s->irqchip_in_kernel);
event.level = level;
event.irq = irq;
ret = kvm_vm_ioctl(s, s->irqchip_inject_ioctl, &event);
if (ret < 0) {
perror("kvm_set_irqchip_line");
abort();
}
return (s->irqchip_inject_ioctl == KVM_IRQ_LINE) ? 1 : event.status;
}
static int kvm_set_identity_map_addr(kvm_context_t kvm, uint64_t addr)
{
#ifdef KVM_CAP_SET_IDENTITY_MAP_ADDR
int r;
r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_SET_IDENTITY_MAP_ADDR);
if (r > 0) {
r = kvm_vm_ioctl(kvm_state, KVM_SET_IDENTITY_MAP_ADDR, &addr);
if (r == -1) {
fprintf(stderr, "kvm_set_identity_map_addr: %m\n");
return -errno;
}
return 0;
}
#endif
return -ENOSYS;
}
