#include <stdarg.h>
#include <linux/kvm.h>
+#include <asm/processor-flags.h>
#include "qemu-common.h"
#include "qemu-barrier.h"
#ifdef DEBUG_KVM
#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
+ do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
- do { } while (0)
+ do { } while (0)
#endif
extern void show_message(const char *szTitle, const char *szMessage);
typedef struct KVMSlot
{
- target_phys_addr_t start_addr;
- ram_addr_t memory_size;
- ram_addr_t phys_offset;
- int slot;
- int flags;
+ target_phys_addr_t start_addr;
+ ram_addr_t memory_size;
+ ram_addr_t phys_offset;
+ int slot;
+ int flags;
} KVMSlot;
typedef struct kvm_dirty_log KVMDirtyLog;
struct KVMState
{
- KVMSlot slots[32];
- int fd;
- int vmfd;
- int coalesced_mmio;
- struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
- int broken_set_mem_region;
- int migration_log;
- int vcpu_events;
- int robust_singlestep;
- int debugregs;
+ KVMSlot slots[32];
+ int fd;
+ int vmfd;
+ int coalesced_mmio;
+ struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
+ int broken_set_mem_region;
+ int migration_log;
+ int vcpu_events;
+ int robust_singlestep;
+ int debugregs;
#ifdef KVM_CAP_SET_GUEST_DEBUG
- struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
+ struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
#endif
- int irqchip_in_kernel;
- int pit_in_kernel;
- int xsave, xcrs;
- int many_ioeventfds;
+ int irqchip_in_kernel;
+ int pit_in_kernel;
+ int xsave, xcrs;
+ int many_ioeventfds;
};
static KVMState *kvm_state;
static const KVMCapabilityInfo kvm_required_capabilites[] = {
- KVM_CAP_INFO(USER_MEMORY),
- KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS),
- KVM_CAP_LAST_INFO
+ KVM_CAP_INFO(USER_MEMORY),
+ KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS),
+ KVM_CAP_LAST_INFO
};
static KVMSlot *kvm_alloc_slot(KVMState *s)
{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
- /* KVM private memory slots */
- if (i >= 8 && i < 12) {
- continue;
- }
- if (s->slots[i].memory_size == 0) {
- return &s->slots[i];
- }
- }
-
- fprintf(stderr, "%s: no free slot available\n", __func__);
- abort();
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ /* KVM private memory slots */
+ if (i >= 8 && i < 12) {
+ continue;
+ }
+ if (s->slots[i].memory_size == 0) {
+ return &s->slots[i];
+ }
+ }
+
+ fprintf(stderr, "%s: no free slot available\n", __func__);
+ abort();
}
static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
- target_phys_addr_t start_addr,
- target_phys_addr_t end_addr)
+ target_phys_addr_t start_addr,
+ target_phys_addr_t end_addr)
{
- int i;
+ int i;
- for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
- KVMSlot *mem = &s->slots[i];
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ KVMSlot *mem = &s->slots[i];
- if (start_addr == mem->start_addr &&
- end_addr == mem->start_addr + mem->memory_size) {
- return mem;
- }
- }
+ if (start_addr == mem->start_addr &&
+ end_addr == mem->start_addr + mem->memory_size) {
+ return mem;
+ }
+ }
- return NULL;
+ return NULL;
}
/*
* Find overlapping slot with lowest start address
*/
static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
- target_phys_addr_t start_addr,
- target_phys_addr_t end_addr)
+ target_phys_addr_t start_addr,
+ target_phys_addr_t end_addr)
{
- KVMSlot *found = NULL;
- int i;
+ KVMSlot *found = NULL;
+ int i;
- for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
- KVMSlot *mem = &s->slots[i];
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ KVMSlot *mem = &s->slots[i];
- if (mem->memory_size == 0 ||
- (found && found->start_addr < mem->start_addr)) {
- continue;
- }
+ if (mem->memory_size == 0 ||
+ (found && found->start_addr < mem->start_addr)) {
+ continue;
+ }
- if (end_addr > mem->start_addr &&
- start_addr < mem->start_addr + mem->memory_size) {
- found = mem;
- }
- }
+ if (end_addr > mem->start_addr &&
+ start_addr < mem->start_addr + mem->memory_size) {
+ found = mem;
+ }
+ }
- return found;
+ return found;
}
int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
- target_phys_addr_t *phys_addr)
+ target_phys_addr_t *phys_addr)
{
- int i;
+ int i;
- for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
- KVMSlot *mem = &s->slots[i];
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ KVMSlot *mem = &s->slots[i];
- if (ram_addr >= mem->phys_offset &&
- ram_addr < mem->phys_offset + mem->memory_size) {
- *phys_addr = mem->start_addr + (ram_addr - mem->phys_offset);
- return 1;
- }
- }
+ if (ram_addr >= mem->phys_offset &&
+ ram_addr < mem->phys_offset + mem->memory_size) {
+ *phys_addr = mem->start_addr + (ram_addr - mem->phys_offset);
+ return 1;
+ }
+ }
- return 0;
+ return 0;
}
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)qemu_safe_ram_ptr(slot->phys_offset);
- 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);
+ 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)qemu_safe_ram_ptr(slot->phys_offset);
+ 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_reset_vcpu(void *opaque)
{
- CPUState *env = opaque;
+ CPUState *env = opaque;
- kvm_arch_reset_vcpu(env);
+ kvm_arch_reset_vcpu(env);
}
int kvm_irqchip_in_kernel(void)
{
- return kvm_state->irqchip_in_kernel;
+ return kvm_state->irqchip_in_kernel;
}
int kvm_pit_in_kernel(void)
{
- return kvm_state->pit_in_kernel;
+ return kvm_state->pit_in_kernel;
}
-
int kvm_init_vcpu(CPUState *env)
{
- KVMState *s = kvm_state;
- long mmap_size;
- int ret;
-
- DPRINTF("kvm_init_vcpu\n");
-
- ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index);
- if (ret < 0) {
- DPRINTF("kvm_create_vcpu failed\n");
- goto err;
- }
-
- env->kvm_fd = ret;
- env->kvm_state = s;
-
- mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
- if (mmap_size < 0) {
- 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);
- }
+ KVMState *s = kvm_state;
+ long mmap_size;
+ int ret;
+
+ DPRINTF("kvm_init_vcpu\n");
+
+ ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index);
+ if (ret < 0) {
+ DPRINTF("kvm_create_vcpu failed\n");
+ goto err;
+ }
+
+ env->kvm_fd = ret;
+ env->kvm_state = s;
+
+ mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
+ if (mmap_size < 0) {
+ 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;
+ return ret;
}
/*
* dirty pages logging control
*/
static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr,
- ram_addr_t size, int flags, int mask)
+ ram_addr_t size, int flags, int mask)
{
- KVMState *s = kvm_state;
- KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size);
- int old_flags;
-
- if (mem == NULL) {
- fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-"
- TARGET_FMT_plx "\n", __func__, phys_addr,
- (target_phys_addr_t)(phys_addr + size - 1));
- return -EINVAL;
- }
-
- old_flags = mem->flags;
-
- flags = (mem->flags & ~mask) | flags;
- mem->flags = flags;
-
- /* If nothing changed effectively, no need to issue ioctl */
- if (s->migration_log) {
- flags |= KVM_MEM_LOG_DIRTY_PAGES;
- }
- if (flags == old_flags) {
- return 0;
- }
-
- return kvm_set_user_memory_region(s, mem);
+ KVMState *s = kvm_state;
+ KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size);
+ int old_flags;
+
+ if (mem == NULL) {
+ fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-"
+ TARGET_FMT_plx "\n", __func__, phys_addr,
+ (target_phys_addr_t)(phys_addr + size - 1));
+ return -EINVAL;
+ }
+
+ old_flags = mem->flags;
+
+ flags = (mem->flags & ~mask) | flags;
+ mem->flags = flags;
+
+ /* If nothing changed effectively, no need to issue ioctl */
+ if (s->migration_log) {
+ flags |= KVM_MEM_LOG_DIRTY_PAGES;
+ }
+ if (flags == old_flags) {
+ return 0;
+ }
+
+ return kvm_set_user_memory_region(s, mem);
}
int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size)
{
- return kvm_dirty_pages_log_change(phys_addr, size, KVM_MEM_LOG_DIRTY_PAGES,
- KVM_MEM_LOG_DIRTY_PAGES);
+ return kvm_dirty_pages_log_change(phys_addr, size, KVM_MEM_LOG_DIRTY_PAGES,
+ KVM_MEM_LOG_DIRTY_PAGES);
}
int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size)
{
- return kvm_dirty_pages_log_change(phys_addr, size, 0,
- KVM_MEM_LOG_DIRTY_PAGES);
+ return kvm_dirty_pages_log_change(phys_addr, size, 0,
+ KVM_MEM_LOG_DIRTY_PAGES);
}
static int kvm_set_migration_log(int enable)
{
- KVMState *s = kvm_state;
- KVMSlot *mem;
- int i, err;
-
- s->migration_log = enable;
-
- for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
- mem = &s->slots[i];
-
- if (!mem->memory_size) {
- continue;
- }
- if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
- continue;
- }
- err = kvm_set_user_memory_region(s, mem);
- if (err) {
- return err;
- }
- }
- return 0;
+ KVMState *s = kvm_state;
+ KVMSlot *mem;
+ int i, err;
+
+ s->migration_log = enable;
+
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ mem = &s->slots[i];
+
+ if (!mem->memory_size) {
+ continue;
+ }
+ if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
+ continue;
+ }
+ err = kvm_set_user_memory_region(s, mem);
+ if (err) {
+ return err;
+ }
+ }
+ return 0;
}
/* get kvm's dirty pages bitmap and update qemu's */
static int kvm_get_dirty_pages_log_range(unsigned long start_addr,
- unsigned long *bitmap,
- unsigned long offset,
- unsigned long mem_size)
+ unsigned long *bitmap,
+ unsigned long offset,
+ unsigned long mem_size)
{
- unsigned int i, j;
- unsigned long page_number, addr, addr1, c;
- ram_addr_t ram_addr;
- unsigned int len = ((mem_size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) /
- HOST_LONG_BITS;
-
- /*
- * bitmap-traveling is faster than memory-traveling (for addr...)
- * especially when most of the memory is not dirty.
- */
- for (i = 0; i < len; i++) {
- if (bitmap[i] != 0) {
- c = leul_to_cpu(bitmap[i]);
- do {
- j = ffsl(c) - 1;
- c &= ~(1ul << j);
- page_number = i * HOST_LONG_BITS + j;
- addr1 = page_number * TARGET_PAGE_SIZE;
- addr = offset + addr1;
- ram_addr = cpu_get_physical_page_desc(addr);
- cpu_physical_memory_set_dirty(ram_addr);
- } while (c != 0);
- }
- }
- return 0;
+ unsigned int i, j;
+ unsigned long page_number, addr, addr1, c;
+ ram_addr_t ram_addr;
+ unsigned int len = ((mem_size / TARGET_PAGE_SIZE) + HOST_LONG_BITS - 1) /
+ HOST_LONG_BITS;
+
+ /*
+ * bitmap-traveling is faster than memory-traveling (for addr...)
+ * especially when most of the memory is not dirty.
+ */
+ for (i = 0; i < len; i++) {
+ if (bitmap[i] != 0) {
+ c = leul_to_cpu(bitmap[i]);
+ do {
+ j = ffsl(c) - 1;
+ c &= ~(1ul << j);
+ page_number = i * HOST_LONG_BITS + j;
+ addr1 = page_number * TARGET_PAGE_SIZE;
+ addr = offset + addr1;
+ ram_addr = cpu_get_physical_page_desc(addr);
+ cpu_physical_memory_set_dirty(ram_addr);
+ } while (c != 0);
+ }
+ }
+ return 0;
}
#define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1))
* @end_addr: end of logged region.
*/
static int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
- target_phys_addr_t end_addr)
+ target_phys_addr_t end_addr)
{
- KVMState *s = kvm_state;
- unsigned long size, allocated_size = 0;
- KVMDirtyLog d;
- KVMSlot *mem;
- int ret = 0;
-
- d.dirty_bitmap = NULL;
- while (start_addr < end_addr) {
- mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr);
- if (mem == NULL) {
- break;
- }
-
- size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), HOST_LONG_BITS) / 8;
- if (!d.dirty_bitmap) {
- d.dirty_bitmap = qemu_malloc(size);
- } else if (size > allocated_size) {
- d.dirty_bitmap = qemu_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(mem->start_addr, d.dirty_bitmap,
- mem->start_addr, mem->memory_size);
- start_addr = mem->start_addr + mem->memory_size;
- }
- qemu_free(d.dirty_bitmap);
-
- return ret;
+ KVMState *s = kvm_state;
+ unsigned long size, allocated_size = 0;
+ KVMDirtyLog d;
+ KVMSlot *mem;
+ int ret = 0;
+
+ d.dirty_bitmap = NULL;
+ while (start_addr < end_addr) {
+ mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr);
+ if (mem == NULL) {
+ break;
+ }
+
+ size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), HOST_LONG_BITS) / 8;
+ if (!d.dirty_bitmap) {
+ d.dirty_bitmap = qemu_malloc(size);
+ } else if (size > allocated_size) {
+ d.dirty_bitmap = qemu_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(mem->start_addr, d.dirty_bitmap,
+ mem->start_addr, mem->memory_size);
+ start_addr = mem->start_addr + mem->memory_size;
+ }
+ qemu_free(d.dirty_bitmap);
+
+ return ret;
}
int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
{
- int ret = -ENOSYS;
- KVMState *s = kvm_state;
+ int ret = -ENOSYS;
+ KVMState *s = kvm_state;
- if (s->coalesced_mmio) {
- struct kvm_coalesced_mmio_zone zone;
+ if (s->coalesced_mmio) {
+ struct kvm_coalesced_mmio_zone zone;
- zone.addr = start;
- zone.size = size;
+ zone.addr = start;
+ zone.size = size;
- ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
- }
+ ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
+ }
- return ret;
+ return ret;
}
int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
{
- int ret = -ENOSYS;
- KVMState *s = kvm_state;
+ int ret = -ENOSYS;
+ KVMState *s = kvm_state;
- if (s->coalesced_mmio) {
- struct kvm_coalesced_mmio_zone zone;
+ if (s->coalesced_mmio) {
+ struct kvm_coalesced_mmio_zone zone;
- zone.addr = start;
- zone.size = size;
+ zone.addr = start;
+ zone.size = size;
- ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
- }
+ ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
+ }
- return ret;
+ return ret;
}
int kvm_check_extension(KVMState *s, unsigned int extension)
{
- int ret;
+ int ret;
- ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension);
- if (ret < 0) {
- ret = 0;
- }
+ ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension);
+ if (ret < 0) {
+ ret = 0;
+ }
- return ret;
+ return ret;
}
static int kvm_check_many_ioeventfds(void)
{
- /* Userspace can use ioeventfd for io notification. This requires a host
- * that supports eventfd(2) and an I/O thread; since eventfd does not
- * support SIGIO it cannot interrupt the vcpu.
- *
- * Older kernels have a 6 device limit on the KVM io bus. Find out so we
- * can avoid creating too many ioeventfds.
- */
+ /* Userspace can use ioeventfd for io notification. This requires a host
+ * that supports eventfd(2) and an I/O thread; since eventfd does not
+ * support SIGIO it cannot interrupt the vcpu.
+ *
+ * Older kernels have a 6 device limit on the KVM io bus. Find out so we
+ * can avoid creating too many ioeventfds.
+ */
#if defined(CONFIG_EVENTFD) && defined(CONFIG_IOTHREAD)
- int ioeventfds[7];
- int i, ret = 0;
- for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) {
- ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
- if (ioeventfds[i] < 0) {
- break;
- }
- ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true);
- if (ret < 0) {
- close(ioeventfds[i]);
- break;
- }
- }
-
- /* Decide whether many devices are supported or not */
- ret = i == ARRAY_SIZE(ioeventfds);
-
- while (i-- > 0) {
- kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false);
- close(ioeventfds[i]);
- }
- return ret;
+ int ioeventfds[7];
+ int i, ret = 0;
+ for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) {
+ ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
+ if (ioeventfds[i] < 0) {
+ break;
+ }
+ ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true);
+ if (ret < 0) {
+ close(ioeventfds[i]);
+ break;
+ }
+ }
+
+ /* Decide whether many devices are supported or not */
+ ret = i == ARRAY_SIZE(ioeventfds);
+
+ while (i-- > 0) {
+ kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false);
+ close(ioeventfds[i]);
+ }
+ return ret;
#else
- return 0;
+ return 0;
#endif
}
-static const KVMCapabilityInfo *
+ static const KVMCapabilityInfo *
kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
{
- while (list->name) {
- if (!kvm_check_extension(s, list->value)) {
- return list;
- }
- list++;
- }
- return NULL;
+ while (list->name) {
+ if (!kvm_check_extension(s, list->value)) {
+ return list;
+ }
+ list++;
+ }
+ return NULL;
}
static void kvm_set_phys_mem(target_phys_addr_t start_addr, ram_addr_t size,
- ram_addr_t phys_offset)
+ ram_addr_t phys_offset)
{
- KVMState *s = kvm_state;
- ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK;
- KVMSlot *mem, old;
- int err;
-
- /* kvm works in page size chunks, but the function may be called
- with sub-page size and unaligned start address. */
- size = TARGET_PAGE_ALIGN(size);
- start_addr = TARGET_PAGE_ALIGN(start_addr);
-
- /* KVM does not support read-only slots */
- phys_offset &= ~IO_MEM_ROM;
-
- while (1) {
- mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size);
- if (!mem) {
- break;
- }
-
- if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr &&
- (start_addr + size <= mem->start_addr + mem->memory_size) &&
- (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) {
- /* The new slot fits into the existing one and comes with
- * identical parameters - nothing to be done. */
- return;
- }
-
- old = *mem;
-
- /* unregister the overlapping slot */
- mem->memory_size = 0;
- err = kvm_set_user_memory_region(s, mem);
- if (err) {
- fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
- __func__, strerror(-err));
- abort();
- }
-
- /* Workaround for older KVM versions: we can't join slots, even not by
- * unregistering the previous ones and then registering the larger
- * slot. We have to maintain the existing fragmentation. Sigh.
- *
- * This workaround assumes that the new slot starts at the same
- * address as the first existing one. If not or if some overlapping
- * slot comes around later, we will fail (not seen in practice so far)
- * - and actually require a recent KVM version. */
- if (s->broken_set_mem_region &&
- old.start_addr == start_addr && old.memory_size < size &&
- flags < IO_MEM_UNASSIGNED) {
- mem = kvm_alloc_slot(s);
- mem->memory_size = old.memory_size;
- mem->start_addr = old.start_addr;
- mem->phys_offset = old.phys_offset;
- mem->flags = 0;
-
- err = kvm_set_user_memory_region(s, mem);
- if (err) {
- fprintf(stderr, "%s: error updating slot: %s\n", __func__,
- strerror(-err));
- abort();
- }
-
- start_addr += old.memory_size;
- phys_offset += old.memory_size;
- size -= old.memory_size;
- continue;
- }
-
- /* register prefix slot */
- if (old.start_addr < start_addr) {
- mem = kvm_alloc_slot(s);
- mem->memory_size = start_addr - old.start_addr;
- mem->start_addr = old.start_addr;
- mem->phys_offset = old.phys_offset;
- mem->flags = 0;
-
- err = kvm_set_user_memory_region(s, mem);
- if (err) {
- fprintf(stderr, "%s: error registering prefix slot: %s\n",
- __func__, strerror(-err));
- abort();
- }
- }
-
- /* register suffix slot */
- if (old.start_addr + old.memory_size > start_addr + size) {
- ram_addr_t size_delta;
-
- mem = kvm_alloc_slot(s);
- mem->start_addr = start_addr + size;
- size_delta = mem->start_addr - old.start_addr;
- mem->memory_size = old.memory_size - size_delta;
- mem->phys_offset = old.phys_offset + size_delta;
- mem->flags = 0;
-
- err = kvm_set_user_memory_region(s, mem);
- if (err) {
- fprintf(stderr, "%s: error registering suffix slot: %s\n",
- __func__, strerror(-err));
- abort();
- }
- }
- }
-
- /* in case the KVM bug workaround already "consumed" the new slot */
- if (!size) {
- return;
- }
- /* KVM does not need to know about this memory */
- if (flags >= IO_MEM_UNASSIGNED) {
- return;
- }
- mem = kvm_alloc_slot(s);
- mem->memory_size = size;
- mem->start_addr = start_addr;
- mem->phys_offset = phys_offset;
- mem->flags = 0;
-
- err = kvm_set_user_memory_region(s, mem);
- if (err) {
- fprintf(stderr, "%s: error registering slot: %s\n", __func__,
- strerror(-err));
- abort();
- }
+ KVMState *s = kvm_state;
+ ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK;
+ KVMSlot *mem, old;
+ int err;
+
+ /* kvm works in page size chunks, but the function may be called
+ with sub-page size and unaligned start address. */
+ size = TARGET_PAGE_ALIGN(size);
+ start_addr = TARGET_PAGE_ALIGN(start_addr);
+
+ /* KVM does not support read-only slots */
+ phys_offset &= ~IO_MEM_ROM;
+
+ while (1) {
+ mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size);
+ if (!mem) {
+ break;
+ }
+
+ if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr &&
+ (start_addr + size <= mem->start_addr + mem->memory_size) &&
+ (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) {
+ /* The new slot fits into the existing one and comes with
+ * identical parameters - nothing to be done. */
+ return;
+ }
+
+ old = *mem;
+
+ /* unregister the overlapping slot */
+ mem->memory_size = 0;
+ err = kvm_set_user_memory_region(s, mem);
+ if (err) {
+ fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
+ __func__, strerror(-err));
+ abort();
+ }
+
+ /* Workaround for older KVM versions: we can't join slots, even not by
+ * unregistering the previous ones and then registering the larger
+ * slot. We have to maintain the existing fragmentation. Sigh.
+ *
+ * This workaround assumes that the new slot starts at the same
+ * address as the first existing one. If not or if some overlapping
+ * slot comes around later, we will fail (not seen in practice so far)
+ * - and actually require a recent KVM version. */
+ if (s->broken_set_mem_region &&
+ old.start_addr == start_addr && old.memory_size < size &&
+ flags < IO_MEM_UNASSIGNED) {
+ mem = kvm_alloc_slot(s);
+ mem->memory_size = old.memory_size;
+ mem->start_addr = old.start_addr;
+ mem->phys_offset = old.phys_offset;
+ mem->flags = 0;
+
+ err = kvm_set_user_memory_region(s, mem);
+ if (err) {
+ fprintf(stderr, "%s: error updating slot: %s\n", __func__,
+ strerror(-err));
+ abort();
+ }
+
+ start_addr += old.memory_size;
+ phys_offset += old.memory_size;
+ size -= old.memory_size;
+ continue;
+ }
+
+ /* register prefix slot */
+ if (old.start_addr < start_addr) {
+ mem = kvm_alloc_slot(s);
+ mem->memory_size = start_addr - old.start_addr;
+ mem->start_addr = old.start_addr;
+ mem->phys_offset = old.phys_offset;
+ mem->flags = 0;
+
+ err = kvm_set_user_memory_region(s, mem);
+ if (err) {
+ fprintf(stderr, "%s: error registering prefix slot: %s\n",
+ __func__, strerror(-err));
+ abort();
+ }
+ }
+
+ /* register suffix slot */
+ if (old.start_addr + old.memory_size > start_addr + size) {
+ ram_addr_t size_delta;
+
+ mem = kvm_alloc_slot(s);
+ mem->start_addr = start_addr + size;
+ size_delta = mem->start_addr - old.start_addr;
+ mem->memory_size = old.memory_size - size_delta;
+ mem->phys_offset = old.phys_offset + size_delta;
+ mem->flags = 0;
+
+ err = kvm_set_user_memory_region(s, mem);
+ if (err) {
+ fprintf(stderr, "%s: error registering suffix slot: %s\n",
+ __func__, strerror(-err));
+ abort();
+ }
+ }
+ }
+
+ /* in case the KVM bug workaround already "consumed" the new slot */
+ if (!size) {
+ return;
+ }
+ /* KVM does not need to know about this memory */
+ if (flags >= IO_MEM_UNASSIGNED) {
+ return;
+ }
+ mem = kvm_alloc_slot(s);
+ mem->memory_size = size;
+ mem->start_addr = start_addr;
+ mem->phys_offset = phys_offset;
+ mem->flags = 0;
+
+ err = kvm_set_user_memory_region(s, mem);
+ if (err) {
+ fprintf(stderr, "%s: error registering slot: %s\n", __func__,
+ strerror(-err));
+ abort();
+ }
}
static void kvm_client_set_memory(struct CPUPhysMemoryClient *client,
- target_phys_addr_t start_addr,
- ram_addr_t size, ram_addr_t phys_offset)
+ target_phys_addr_t start_addr,
+ ram_addr_t size, ram_addr_t phys_offset)
{
- kvm_set_phys_mem(start_addr, size, phys_offset);
+ kvm_set_phys_mem(start_addr, size, phys_offset);
}
static int kvm_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client,
- target_phys_addr_t start_addr,
- target_phys_addr_t end_addr)
+ target_phys_addr_t start_addr,
+ target_phys_addr_t end_addr)
{
- return kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
+ return kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
}
static int kvm_client_migration_log(struct CPUPhysMemoryClient *client,
- int enable)
+ int enable)
{
- return kvm_set_migration_log(enable);
+ return kvm_set_migration_log(enable);
}
static CPUPhysMemoryClient kvm_cpu_phys_memory_client = {
- .set_memory = kvm_client_set_memory,
- .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap,
- .migration_log = kvm_client_migration_log,
+ .set_memory = kvm_client_set_memory,
+ .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap,
+ .migration_log = kvm_client_migration_log,
};
int kvm_init(void)
{
- static const char upgrade_note[] =
- "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
- "(see http://sourceforge.net/projects/kvm).\n";
- KVMState *s;
- const KVMCapabilityInfo *missing_cap;
- int ret;
- int i;
+ static const char upgrade_note[] =
+ "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
+ "(see http://sourceforge.net/projects/kvm).\n";
+ KVMState *s;
+ const KVMCapabilityInfo *missing_cap;
+ int ret;
+ int i;
- s = qemu_mallocz(sizeof(KVMState));
+ s = qemu_mallocz(sizeof(KVMState));
#ifdef KVM_CAP_SET_GUEST_DEBUG
- QTAILQ_INIT(&s->kvm_sw_breakpoints);
+ QTAILQ_INIT(&s->kvm_sw_breakpoints);
#endif
- for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
- s->slots[i].slot = i;
- }
- s->vmfd = -1;
- s->fd = qemu_open("/dev/kvm", O_RDWR);
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ s->slots[i].slot = i;
+ }
+ s->vmfd = -1;
+ s->fd = qemu_open("/dev/kvm", O_RDWR);
if (s->fd == -1) {
fprintf(stderr, "Could not access KVM kernel module: %m\n");
}
ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
- if (ret < KVM_API_VERSION) {
- if (ret > 0) {
- ret = -EINVAL;
- }
- fprintf(stderr, "kvm version too old\n");
+ if (ret < KVM_API_VERSION) {
+ if (ret > 0) {
+ ret = -EINVAL;
+ }
+ fprintf(stderr, "kvm version too old\n");
show_message("Error", "KVM version too old \n");
- goto err;
- }
+ goto err;
+ }
- if (ret > KVM_API_VERSION) {
- ret = -EINVAL;
- fprintf(stderr, "kvm version not supported\n");
+ if (ret > KVM_API_VERSION) {
+ ret = -EINVAL;
+ fprintf(stderr, "kvm version not supported\n");
show_message("Error", "KVM version not supported \n");
- goto err;
- }
+ goto err;
+ }
- s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
- if (s->vmfd < 0) {
+ s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
+ if (s->vmfd < 0) {
#ifdef TARGET_S390X
- fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
- "your host kernel command line\n");
+ fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
+ "your host kernel command line\n");
#endif
- goto err;
- }
-
- missing_cap = kvm_check_extension_list(s, kvm_required_capabilites);
- if (!missing_cap) {
- missing_cap =
- kvm_check_extension_list(s, kvm_arch_required_capabilities);
- }
- if (missing_cap) {
- ret = -EINVAL;
- fprintf(stderr, "kvm does not support %s\n%s",
- missing_cap->name, upgrade_note);
- goto err;
- }
-
- s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO);
-
- s->broken_set_mem_region = 1;
+ goto err;
+ }
+
+ missing_cap = kvm_check_extension_list(s, kvm_required_capabilites);
+ if (!missing_cap) {
+ missing_cap =
+ kvm_check_extension_list(s, kvm_arch_required_capabilities);
+ }
+ if (missing_cap) {
+ ret = -EINVAL;
+ fprintf(stderr, "kvm does not support %s\n%s",
+ missing_cap->name, upgrade_note);
+ goto err;
+ }
+
+ s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO);
+
+ s->broken_set_mem_region = 1;
#ifdef KVM_CAP_JOIN_MEMORY_REGIONS_WORKS
- ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS);
- if (ret > 0) {
- s->broken_set_mem_region = 0;
- }
+ ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS);
+ if (ret > 0) {
+ s->broken_set_mem_region = 0;
+ }
#endif
- s->vcpu_events = 0;
+ s->vcpu_events = 0;
#ifdef KVM_CAP_VCPU_EVENTS
- s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS);
+ s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS);
#endif
- s->robust_singlestep = 0;
+ s->robust_singlestep = 0;
#ifdef KVM_CAP_X86_ROBUST_SINGLESTEP
- s->robust_singlestep =
- kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP);
+ s->robust_singlestep =
+ kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP);
#endif
- s->debugregs = 0;
+ s->debugregs = 0;
#ifdef KVM_CAP_DEBUGREGS
- s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS);
+ s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS);
#endif
- s->xsave = 0;
+ s->xsave = 0;
#ifdef KVM_CAP_XSAVE
- s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE);
+ s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE);
#endif
- s->xcrs = 0;
+ s->xcrs = 0;
#ifdef KVM_CAP_XCRS
- s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS);
+ s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS);
#endif
- ret = kvm_arch_init(s);
- if (ret < 0) {
- goto err;
- }
+ ret = kvm_arch_init(s);
+ if (ret < 0) {
+ goto err;
+ }
- kvm_state = s;
- cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client);
+ kvm_state = s;
+ cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client);
- s->many_ioeventfds = kvm_check_many_ioeventfds();
+ s->many_ioeventfds = kvm_check_many_ioeventfds();
- return 0;
+ return 0;
err:
- if (s) {
- if (s->vmfd != -1) {
- close(s->vmfd);
- }
- if (s->fd != -1) {
- close(s->fd);
- }
- }
- qemu_free(s);
-
- return ret;
+ if (s) {
+ if (s->vmfd != -1) {
+ close(s->vmfd);
+ }
+ if (s->fd != -1) {
+ close(s->fd);
+ }
+ }
+ qemu_free(s);
+
+ return ret;
}
static int kvm_handle_io(uint16_t port, void *data, int direction, int size,
- uint32_t count)
+ uint32_t count)
{
- int i;
- uint8_t *ptr = data;
-
- for (i = 0; i < count; i++) {
- if (direction == KVM_EXIT_IO_IN) {
- switch (size) {
- case 1:
- stb_p(ptr, cpu_inb(port));
- break;
- case 2:
- stw_p(ptr, cpu_inw(port));
- break;
- case 4:
- stl_p(ptr, cpu_inl(port));
- break;
- }
- } else {
- switch (size) {
- case 1:
- cpu_outb(port, ldub_p(ptr));
- break;
- case 2:
- cpu_outw(port, lduw_p(ptr));
- break;
- case 4:
- cpu_outl(port, ldl_p(ptr));
- break;
- }
- }
-
- ptr += size;
- }
-
- return 1;
+ int i;
+ uint8_t *ptr = data;
+
+ for (i = 0; i < count; i++) {
+ if (direction == KVM_EXIT_IO_IN) {
+ switch (size) {
+ case 1:
+ stb_p(ptr, cpu_inb(port));
+ break;
+ case 2:
+ stw_p(ptr, cpu_inw(port));
+ break;
+ case 4:
+ stl_p(ptr, cpu_inl(port));
+ break;
+ }
+ } else {
+ switch (size) {
+ case 1:
+ cpu_outb(port, ldub_p(ptr));
+ break;
+ case 2:
+ cpu_outw(port, lduw_p(ptr));
+ break;
+ case 4:
+ cpu_outl(port, ldl_p(ptr));
+ break;
+ }
+ }
+
+ ptr += size;
+ }
+
+ return 1;
}
#ifdef KVM_CAP_INTERNAL_ERROR_DATA
static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run)
{
- fprintf(stderr, "KVM internal error.");
- if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
- int i;
-
- fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
- for (i = 0; i < run->internal.ndata; ++i) {
- fprintf(stderr, "extra data[%d]: %"PRIx64"\n",
- i, (uint64_t)run->internal.data[i]);
- }
- } else {
- fprintf(stderr, "\n");
- }
- if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
- fprintf(stderr, "emulation failure\n");
- if (!kvm_arch_stop_on_emulation_error(env)) {
- cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
- return 0;
- }
- }
- /* FIXME: Should trigger a qmp message to let management know
- * something went wrong.
- */
- return -1;
+ fprintf(stderr, "KVM internal error.");
+ if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
+ int i;
+
+ fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
+ for (i = 0; i < run->internal.ndata; ++i) {
+ fprintf(stderr, "extra data[%d]: %"PRIx64"\n",
+ i, (uint64_t)run->internal.data[i]);
+ }
+ } else {
+ fprintf(stderr, "\n");
+ }
+ if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
+ fprintf(stderr, "emulation failure\n");
+ if (!kvm_arch_stop_on_emulation_error(env)) {
+ cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
+ return 0;
+ }
+ }
+ /* FIXME: Should trigger a qmp message to let management know
+ * something went wrong.
+ */
+ return -1;
}
#endif
void kvm_flush_coalesced_mmio_buffer(void)
{
- KVMState *s = kvm_state;
- if (s->coalesced_mmio_ring) {
- struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
- while (ring->first != ring->last) {
- struct kvm_coalesced_mmio *ent;
-
- ent = &ring->coalesced_mmio[ring->first];
-
- cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len);
- smp_wmb();
- ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
- }
- }
+ KVMState *s = kvm_state;
+ if (s->coalesced_mmio_ring) {
+ struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
+ while (ring->first != ring->last) {
+ struct kvm_coalesced_mmio *ent;
+
+ ent = &ring->coalesced_mmio[ring->first];
+
+ cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len);
+ smp_wmb();
+ ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
+ }
+ }
}
static void do_kvm_cpu_synchronize_state(void *_env)
{
- CPUState *env = _env;
+ CPUState *env = _env;
- if (!env->kvm_vcpu_dirty) {
- kvm_arch_get_registers(env);
- env->kvm_vcpu_dirty = 1;
- }
+ if (!env->kvm_vcpu_dirty) {
+ kvm_arch_get_registers(env);
+ env->kvm_vcpu_dirty = 1;
+ }
}
void kvm_cpu_synchronize_state(CPUState *env)
{
- if (!env->kvm_vcpu_dirty) {
- run_on_cpu(env, do_kvm_cpu_synchronize_state, env);
- }
+ if (!env->kvm_vcpu_dirty) {
+ run_on_cpu(env, do_kvm_cpu_synchronize_state, env);
+ }
}
void kvm_cpu_synchronize_post_reset(CPUState *env)
{
- kvm_arch_put_registers(env, KVM_PUT_RESET_STATE);
- env->kvm_vcpu_dirty = 0;
+ kvm_arch_put_registers(env, KVM_PUT_RESET_STATE);
+ env->kvm_vcpu_dirty = 0;
}
void kvm_cpu_synchronize_post_init(CPUState *env)
{
- kvm_arch_put_registers(env, KVM_PUT_FULL_STATE);
- env->kvm_vcpu_dirty = 0;
+ kvm_arch_put_registers(env, KVM_PUT_FULL_STATE);
+ env->kvm_vcpu_dirty = 0;
}
int kvm_cpu_exec(CPUState *env)
{
- struct kvm_run *run = env->kvm_run;
- int ret;
+ struct kvm_run *run = env->kvm_run;
+ int ret;
- DPRINTF("kvm_cpu_exec()\n");
+ DPRINTF("kvm_cpu_exec()\n");
- do {
+ do {
#ifndef CONFIG_IOTHREAD
- if (env->exit_request) {
- DPRINTF("interrupt exit requested\n");
- ret = 0;
- break;
- }
+ if (env->exit_request) {
+ DPRINTF("interrupt exit requested\n");
+ ret = 0;
+ break;
+ }
#endif
- if (kvm_arch_process_irqchip_events(env)) {
- ret = 0;
- break;
- }
-
- if (env->kvm_vcpu_dirty) {
- kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE);
- env->kvm_vcpu_dirty = 0;
- }
-
- kvm_arch_pre_run(env, run);
- cpu_single_env = NULL;
- qemu_mutex_unlock_iothread();
- ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
- qemu_mutex_lock_iothread();
- cpu_single_env = env;
- kvm_arch_post_run(env, run);
-
- kvm_flush_coalesced_mmio_buffer();
-
- if (ret == -EINTR || ret == -EAGAIN) {
- cpu_exit(env);
- DPRINTF("io window exit\n");
- ret = 0;
- break;
- }
-
- if (ret < 0) {
- DPRINTF("kvm run failed %s\n", strerror(-ret));
- abort();
- }
-
- ret = 0; /* exit loop */
- switch (run->exit_reason) {
- case KVM_EXIT_IO:
- DPRINTF("handle_io\n");
- ret = kvm_handle_io(run->io.port,
- (uint8_t *)run + run->io.data_offset,
- run->io.direction,
- run->io.size,
- run->io.count);
- break;
- case KVM_EXIT_MMIO:
- DPRINTF("handle_mmio\n");
- cpu_physical_memory_rw(run->mmio.phys_addr,
- run->mmio.data,
- run->mmio.len,
- run->mmio.is_write);
- ret = 1;
- break;
- case KVM_EXIT_IRQ_WINDOW_OPEN:
- DPRINTF("irq_window_open\n");
- break;
- case KVM_EXIT_SHUTDOWN:
- DPRINTF("shutdown\n");
- qemu_system_reset_request();
- ret = 1;
- break;
- case KVM_EXIT_UNKNOWN:
- fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n",
- (uint64_t)run->hw.hardware_exit_reason);
- ret = -1;
- break;
+ if (kvm_arch_process_irqchip_events(env)) {
+ ret = 0;
+ break;
+ }
+
+ if (env->kvm_vcpu_dirty) {
+ kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE);
+ env->kvm_vcpu_dirty = 0;
+ }
+
+ kvm_arch_pre_run(env, run);
+ cpu_single_env = NULL;
+ qemu_mutex_unlock_iothread();
+ ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
+ qemu_mutex_lock_iothread();
+ cpu_single_env = env;
+ kvm_arch_post_run(env, run);
+
+ kvm_flush_coalesced_mmio_buffer();
+
+ if (ret == -EINTR || ret == -EAGAIN) {
+ cpu_exit(env);
+ DPRINTF("io window exit\n");
+ ret = 0;
+ break;
+ }
+
+ if (ret < 0) {
+ DPRINTF("kvm run failed %s\n", strerror(-ret));
+ abort();
+ }
+
+ ret = 0; /* exit loop */
+ switch (run->exit_reason) {
+ case KVM_EXIT_IO:
+ DPRINTF("handle_io\n");
+ ret = kvm_handle_io(run->io.port,
+ (uint8_t *)run + run->io.data_offset,
+ run->io.direction,
+ run->io.size,
+ run->io.count);
+ break;
+ case KVM_EXIT_MMIO:
+ DPRINTF("handle_mmio\n");
+ cpu_physical_memory_rw(run->mmio.phys_addr,
+ run->mmio.data,
+ run->mmio.len,
+ run->mmio.is_write);
+ ret = 1;
+ break;
+ case KVM_EXIT_IRQ_WINDOW_OPEN:
+ DPRINTF("irq_window_open\n");
+ break;
+ case KVM_EXIT_SHUTDOWN:
+ DPRINTF("shutdown\n");
+ qemu_system_reset_request();
+ ret = 1;
+ break;
+ case KVM_EXIT_UNKNOWN:
+ fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n",
+ (uint64_t)run->hw.hardware_exit_reason);
+ ret = -1;
+ break;
#ifdef KVM_CAP_INTERNAL_ERROR_DATA
- case KVM_EXIT_INTERNAL_ERROR:
- ret = kvm_handle_internal_error(env, run);
- break;
+ case KVM_EXIT_INTERNAL_ERROR:
+ ret = kvm_handle_internal_error(env, run);
+ break;
#endif
- case KVM_EXIT_DEBUG:
- DPRINTF("kvm_exit_debug\n");
+ case KVM_EXIT_DEBUG:
+ DPRINTF("kvm_exit_debug\n");
#ifdef KVM_CAP_SET_GUEST_DEBUG
- if (kvm_arch_debug(&run->debug.arch)) {
- env->exception_index = EXCP_DEBUG;
- return 0;
- }
- /* re-enter, this exception was guest-internal */
- ret = 1;
+ if (kvm_arch_debug(&run->debug.arch)) {
+ env->exception_index = EXCP_DEBUG;
+ return 0;
+ }
+ /* re-enter, this exception was guest-internal */
+ ret = 1;
#endif /* KVM_CAP_SET_GUEST_DEBUG */
- break;
- default:
- DPRINTF("kvm_arch_handle_exit\n");
- ret = kvm_arch_handle_exit(env, run);
- break;
- }
- } while (ret > 0);
-
- if (ret < 0) {
- cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
- vm_stop(0);
- env->exit_request = 1;
- }
- if (env->exit_request) {
- env->exit_request = 0;
- env->exception_index = EXCP_INTERRUPT;
- }
-
- return ret;
+ break;
+ default:
+ DPRINTF("kvm_arch_handle_exit\n");
+ ret = kvm_arch_handle_exit(env, run);
+ break;
+ }
+ } while (ret > 0);
+
+ if (ret < 0) {
+
+ show_message("Error", "Emulator can't operate in VMX root mode(KVM) \n"
+ "Please disable the VT-x kernel extension(Ex: Virtualbox)");
+
+ cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
+ vm_stop(0);
+
+ exit(0);
+
+ env->exit_request = 1;
+ }
+ if (env->exit_request) {
+ env->exit_request = 0;
+ env->exception_index = EXCP_INTERRUPT;
+ }
+
+ return ret;
}
int kvm_ioctl(KVMState *s, int type, ...)
{
- int ret;
- void *arg;
- va_list ap;
-
- va_start(ap, type);
- arg = va_arg(ap, void *);
- va_end(ap);
-
- ret = ioctl(s->fd, type, arg);
- if (ret == -1) {
- ret = -errno;
- }
- return ret;
+ int ret;
+ void *arg;
+ va_list ap;
+
+ va_start(ap, type);
+ arg = va_arg(ap, void *);
+ va_end(ap);
+
+ ret = ioctl(s->fd, type, arg);
+ if (ret == -1) {
+ ret = -errno;
+ }
+ return ret;
}
int kvm_vm_ioctl(KVMState *s, int type, ...)
{
- int ret;
- void *arg;
- va_list ap;
-
- va_start(ap, type);
- arg = va_arg(ap, void *);
- va_end(ap);
-
- ret = ioctl(s->vmfd, type, arg);
- if (ret == -1) {
- ret = -errno;
- }
- return ret;
+ int ret;
+ void *arg;
+ va_list ap;
+
+ va_start(ap, type);
+ arg = va_arg(ap, void *);
+ va_end(ap);
+
+ ret = ioctl(s->vmfd, type, arg);
+ if (ret == -1) {
+ ret = -errno;
+ }
+ return ret;
}
int kvm_vcpu_ioctl(CPUState *env, int type, ...)
{
- int ret;
- void *arg;
- va_list ap;
-
- va_start(ap, type);
- arg = va_arg(ap, void *);
- va_end(ap);
-
- ret = ioctl(env->kvm_fd, type, arg);
- if (ret == -1) {
- ret = -errno;
- }
- return ret;
+ int ret;
+ void *arg;
+ va_list ap;
+
+ va_start(ap, type);
+ arg = va_arg(ap, void *);
+ va_end(ap);
+
+ ret = ioctl(env->kvm_fd, type, arg);
+ if (ret == -1) {
+ ret = -errno;
+ }
+ return ret;
}
int kvm_has_sync_mmu(void)
{
- return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
+ return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
}
int kvm_has_vcpu_events(void)
{
- return kvm_state->vcpu_events;
+ return kvm_state->vcpu_events;
}
int kvm_has_robust_singlestep(void)
{
- return kvm_state->robust_singlestep;
+ return kvm_state->robust_singlestep;
}
int kvm_has_debugregs(void)
{
- return kvm_state->debugregs;
+ return kvm_state->debugregs;
}
int kvm_has_xsave(void)
{
- return kvm_state->xsave;
+ return kvm_state->xsave;
}
int kvm_has_xcrs(void)
{
- return kvm_state->xcrs;
+ return kvm_state->xcrs;
}
int kvm_has_many_ioeventfds(void)
{
- if (!kvm_enabled()) {
- return 0;
- }
- return kvm_state->many_ioeventfds;
+ if (!kvm_enabled()) {
+ return 0;
+ }
+ return kvm_state->many_ioeventfds;
}
void kvm_setup_guest_memory(void *start, size_t size)
{
- if (!kvm_has_sync_mmu()) {
- int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
-
- if (ret) {
- perror("qemu_madvise");
- fprintf(stderr,
- "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
- exit(1);
- }
- }
+ if (!kvm_has_sync_mmu()) {
+ int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
+
+ if (ret) {
+ perror("qemu_madvise");
+ fprintf(stderr,
+ "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
+ exit(1);
+ }
+ }
}
#ifdef KVM_CAP_SET_GUEST_DEBUG
struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
- target_ulong pc)
+ target_ulong pc)
{
- struct kvm_sw_breakpoint *bp;
-
- QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) {
- if (bp->pc == pc) {
- return bp;
- }
- }
- return NULL;
+ struct kvm_sw_breakpoint *bp;
+
+ QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) {
+ if (bp->pc == pc) {
+ return bp;
+ }
+ }
+ return NULL;
}
int kvm_sw_breakpoints_active(CPUState *env)
{
- return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
+ return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints);
}
struct kvm_set_guest_debug_data {
- struct kvm_guest_debug dbg;
- CPUState *env;
- int err;
+ struct kvm_guest_debug dbg;
+ CPUState *env;
+ int err;
};
static void kvm_invoke_set_guest_debug(void *data)
{
- struct kvm_set_guest_debug_data *dbg_data = data;
- CPUState *env = dbg_data->env;
+ struct kvm_set_guest_debug_data *dbg_data = data;
+ CPUState *env = dbg_data->env;
- dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg);
+ dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg);
}
int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap)
{
- struct kvm_set_guest_debug_data data;
+ struct kvm_set_guest_debug_data data;
- data.dbg.control = reinject_trap;
+ data.dbg.control = reinject_trap;
- if (env->singlestep_enabled) {
- data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP;
- }
- kvm_arch_update_guest_debug(env, &data.dbg);
- data.env = env;
+ if (env->singlestep_enabled) {
+ data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP;
+ }
+ kvm_arch_update_guest_debug(env, &data.dbg);
+ data.env = env;
- run_on_cpu(env, kvm_invoke_set_guest_debug, &data);
- return data.err;
+ run_on_cpu(env, kvm_invoke_set_guest_debug, &data);
+ return data.err;
}
int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
- target_ulong len, int type)
+ target_ulong len, int type)
{
- struct kvm_sw_breakpoint *bp;
- CPUState *env;
- int err;
-
- if (type == GDB_BREAKPOINT_SW) {
- bp = kvm_find_sw_breakpoint(current_env, addr);
- if (bp) {
- bp->use_count++;
- return 0;
- }
-
- bp = qemu_malloc(sizeof(struct kvm_sw_breakpoint));
- if (!bp) {
- return -ENOMEM;
- }
-
- bp->pc = addr;
- bp->use_count = 1;
- err = kvm_arch_insert_sw_breakpoint(current_env, bp);
- if (err) {
- free(bp);
- return err;
- }
-
- QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints,
- bp, entry);
- } else {
- err = kvm_arch_insert_hw_breakpoint(addr, len, type);
- if (err) {
- return err;
- }
- }
-
- for (env = first_cpu; env != NULL; env = env->next_cpu) {
- err = kvm_update_guest_debug(env, 0);
- if (err) {
- return err;
- }
- }
- return 0;
+ struct kvm_sw_breakpoint *bp;
+ CPUState *env;
+ int err;
+
+ if (type == GDB_BREAKPOINT_SW) {
+ bp = kvm_find_sw_breakpoint(current_env, addr);
+ if (bp) {
+ bp->use_count++;
+ return 0;
+ }
+
+ bp = qemu_malloc(sizeof(struct kvm_sw_breakpoint));
+ if (!bp) {
+ return -ENOMEM;
+ }
+
+ bp->pc = addr;
+ bp->use_count = 1;
+ err = kvm_arch_insert_sw_breakpoint(current_env, bp);
+ if (err) {
+ free(bp);
+ return err;
+ }
+
+ QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints,
+ bp, entry);
+ } else {
+ err = kvm_arch_insert_hw_breakpoint(addr, len, type);
+ if (err) {
+ return err;
+ }
+ }
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ err = kvm_update_guest_debug(env, 0);
+ if (err) {
+ return err;
+ }
+ }
+ return 0;
}
int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
- target_ulong len, int type)
+ target_ulong len, int type)
{
- struct kvm_sw_breakpoint *bp;
- CPUState *env;
- int err;
-
- if (type == GDB_BREAKPOINT_SW) {
- bp = kvm_find_sw_breakpoint(current_env, addr);
- if (!bp) {
- return -ENOENT;
- }
-
- if (bp->use_count > 1) {
- bp->use_count--;
- return 0;
- }
-
- err = kvm_arch_remove_sw_breakpoint(current_env, bp);
- if (err) {
- return err;
- }
-
- QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry);
- qemu_free(bp);
- } else {
- err = kvm_arch_remove_hw_breakpoint(addr, len, type);
- if (err) {
- return err;
- }
- }
-
- for (env = first_cpu; env != NULL; env = env->next_cpu) {
- err = kvm_update_guest_debug(env, 0);
- if (err) {
- return err;
- }
- }
- return 0;
+ struct kvm_sw_breakpoint *bp;
+ CPUState *env;
+ int err;
+
+ if (type == GDB_BREAKPOINT_SW) {
+ bp = kvm_find_sw_breakpoint(current_env, addr);
+ if (!bp) {
+ return -ENOENT;
+ }
+
+ if (bp->use_count > 1) {
+ bp->use_count--;
+ return 0;
+ }
+
+ err = kvm_arch_remove_sw_breakpoint(current_env, bp);
+ if (err) {
+ return err;
+ }
+
+ QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry);
+ qemu_free(bp);
+ } else {
+ err = kvm_arch_remove_hw_breakpoint(addr, len, type);
+ if (err) {
+ return err;
+ }
+ }
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ err = kvm_update_guest_debug(env, 0);
+ if (err) {
+ return err;
+ }
+ }
+ return 0;
}
void kvm_remove_all_breakpoints(CPUState *current_env)
{
- struct kvm_sw_breakpoint *bp, *next;
- KVMState *s = current_env->kvm_state;
- CPUState *env;
-
- QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) {
- if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) {
- /* Try harder to find a CPU that currently sees the breakpoint. */
- for (env = first_cpu; env != NULL; env = env->next_cpu) {
- if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) {
- break;
- }
- }
- }
- }
- kvm_arch_remove_all_hw_breakpoints();
-
- for (env = first_cpu; env != NULL; env = env->next_cpu) {
- kvm_update_guest_debug(env, 0);
- }
+ struct kvm_sw_breakpoint *bp, *next;
+ KVMState *s = current_env->kvm_state;
+ CPUState *env;
+
+ QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) {
+ if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) {
+ /* Try harder to find a CPU that currently sees the breakpoint. */
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) {
+ break;
+ }
+ }
+ }
+ }
+ kvm_arch_remove_all_hw_breakpoints();
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ kvm_update_guest_debug(env, 0);
+ }
}
#else /* !KVM_CAP_SET_GUEST_DEBUG */
int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap)
{
- return -EINVAL;
+ return -EINVAL;
}
int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
- target_ulong len, int type)
+ target_ulong len, int type)
{
- return -EINVAL;
+ return -EINVAL;
}
int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
- target_ulong len, int type)
+ target_ulong len, int type)
{
- return -EINVAL;
+ return -EINVAL;
}
void kvm_remove_all_breakpoints(CPUState *current_env)
int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset)
{
- struct kvm_signal_mask *sigmask;
- int r;
+ struct kvm_signal_mask *sigmask;
+ int r;
- if (!sigset) {
- return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL);
- }
+ if (!sigset) {
+ return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL);
+ }
- sigmask = qemu_malloc(sizeof(*sigmask) + sizeof(*sigset));
+ sigmask = qemu_malloc(sizeof(*sigmask) + sizeof(*sigset));
- sigmask->len = 8;
- memcpy(sigmask->sigset, sigset, sizeof(*sigset));
- r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask);
- free(sigmask);
+ sigmask->len = 8;
+ memcpy(sigmask->sigset, sigset, sizeof(*sigset));
+ r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask);
+ free(sigmask);
- return r;
+ return r;
}
int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign)
{
#ifdef KVM_IOEVENTFD
- int ret;
- struct kvm_ioeventfd iofd;
+ int ret;
+ struct kvm_ioeventfd iofd;
- iofd.datamatch = val;
- iofd.addr = addr;
- iofd.len = 4;
- iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH;
- iofd.fd = fd;
+ iofd.datamatch = val;
+ iofd.addr = addr;
+ iofd.len = 4;
+ iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH;
+ iofd.fd = fd;
- if (!kvm_enabled()) {
- return -ENOSYS;
- }
+ if (!kvm_enabled()) {
+ return -ENOSYS;
+ }
- if (!assign) {
- iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
- }
+ if (!assign) {
+ iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
+ }
- ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd);
+ ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd);
- if (ret < 0) {
- return -errno;
- }
+ if (ret < 0) {
+ return -errno;
+ }
- return 0;
+ return 0;
#else
- return -ENOSYS;
+ return -ENOSYS;
#endif
}
int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign)
{
#ifdef KVM_IOEVENTFD
- struct kvm_ioeventfd kick = {
- .datamatch = val,
- .addr = addr,
- .len = 2,
- .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO,
- .fd = fd,
- };
- int r;
- if (!kvm_enabled()) {
- return -ENOSYS;
- }
- if (!assign) {
- kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
- }
- r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
- if (r < 0) {
- return r;
- }
- return 0;
+ struct kvm_ioeventfd kick = {
+ .datamatch = val,
+ .addr = addr,
+ .len = 2,
+ .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO,
+ .fd = fd,
+ };
+ int r;
+ if (!kvm_enabled()) {
+ return -ENOSYS;
+ }
+ if (!assign) {
+ kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
+ }
+ r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
+ if (r < 0) {
+ return r;
+ }
+ return 0;
#else
- return -ENOSYS;
+ return -ENOSYS;
#endif
}
projects / sdk / emulator / qemu.git / commitdiff