*
*/
-#include "iodev.h"
+#include <kvm/iodev.h>
#include <linux/kvm_host.h>
#include <linux/kvm.h>
MODULE_AUTHOR("Qumranet");
MODULE_LICENSE("GPL");
-unsigned int halt_poll_ns = 0;
+static unsigned int halt_poll_ns;
module_param(halt_poll_ns, uint, S_IRUGO | S_IWUSR);
/*
* Ordering of locks:
*
- * kvm->lock --> kvm->slots_lock --> kvm->irq_lock
+ * kvm->lock --> kvm->slots_lock --> kvm->irq_lock
*/
DEFINE_SPINLOCK(kvm_lock);
LIST_HEAD(vm_list);
static cpumask_var_t cpus_hardware_enabled;
-static int kvm_usage_count = 0;
+static int kvm_usage_count;
static atomic_t hardware_enable_failed;
struct kmem_cache *kvm_vcpu_cache;
return kzalloc(size, GFP_KERNEL);
}
-void kvm_kvfree(const void *addr)
-{
- if (is_vmalloc_addr(addr))
- vfree(addr);
- else
- kfree(addr);
-}
-
static void kvm_destroy_dirty_bitmap(struct kvm_memory_slot *memslot)
{
if (!memslot->dirty_bitmap)
return;
- kvm_kvfree(memslot->dirty_bitmap);
+ kvfree(memslot->dirty_bitmap);
memslot->dirty_bitmap = NULL;
}
* or moved, memslot will be created.
*
* validation of sp->gfn happens in:
- * - gfn_to_hva (kvm_read_guest, gfn_to_pfn)
- * - kvm_is_visible_gfn (mmu_check_roots)
+ * - gfn_to_hva (kvm_read_guest, gfn_to_pfn)
+ * - kvm_is_visible_gfn (mmu_check_roots)
*/
kvm_arch_flush_shadow_memslot(kvm, slot);
mask = xchg(&dirty_bitmap[i], 0);
dirty_bitmap_buffer[i] = mask;
- offset = i * BITS_PER_LONG;
- kvm_arch_mmu_enable_log_dirty_pt_masked(kvm, memslot, offset,
- mask);
+ if (mask) {
+ offset = i * BITS_PER_LONG;
+ kvm_arch_mmu_enable_log_dirty_pt_masked(kvm, memslot,
+ offset, mask);
+ }
}
spin_unlock(&kvm->mmu_lock);
return kvm_pfn_to_page(pfn);
}
-
EXPORT_SYMBOL_GPL(gfn_to_page);
void kvm_release_page_clean(struct page *page)
{
if (!kvm_is_reserved_pfn(pfn)) {
struct page *page = pfn_to_page(pfn);
+
if (!PageReserved(page))
SetPageDirty(page);
}
int offset = offset_in_page(gpa);
int ret;
- while ((seg = next_segment(len, offset)) != 0) {
+ while ((seg = next_segment(len, offset)) != 0) {
ret = kvm_clear_guest_page(kvm, gfn, offset, seg);
if (ret < 0)
return ret;
start = cur = ktime_get();
if (halt_poll_ns) {
ktime_t stop = ktime_add_ns(ktime_get(), halt_poll_ns);
+
do {
/*
* This sets KVM_REQ_UNHALT if an interrupt
/* The thread running this VCPU changed. */
struct pid *oldpid = vcpu->pid;
struct pid *newpid = get_task_pid(current, PIDTYPE_PID);
+
rcu_assign_pointer(vcpu->pid, newpid);
if (oldpid)
synchronize_rcu();
if (r)
goto out;
r = -EFAULT;
- if (copy_to_user(argp, &mp_state, sizeof mp_state))
+ if (copy_to_user(argp, &mp_state, sizeof(mp_state)))
goto out;
r = 0;
break;
struct kvm_mp_state mp_state;
r = -EFAULT;
- if (copy_from_user(&mp_state, argp, sizeof mp_state))
+ if (copy_from_user(&mp_state, argp, sizeof(mp_state)))
goto out;
r = kvm_arch_vcpu_ioctl_set_mpstate(vcpu, &mp_state);
break;
struct kvm_translation tr;
r = -EFAULT;
- if (copy_from_user(&tr, argp, sizeof tr))
+ if (copy_from_user(&tr, argp, sizeof(tr)))
goto out;
r = kvm_arch_vcpu_ioctl_translate(vcpu, &tr);
if (r)
goto out;
r = -EFAULT;
- if (copy_to_user(argp, &tr, sizeof tr))
+ if (copy_to_user(argp, &tr, sizeof(tr)))
goto out;
r = 0;
break;
struct kvm_guest_debug dbg;
r = -EFAULT;
- if (copy_from_user(&dbg, argp, sizeof dbg))
+ if (copy_from_user(&dbg, argp, sizeof(dbg)))
goto out;
r = kvm_arch_vcpu_ioctl_set_guest_debug(vcpu, &dbg);
break;
if (argp) {
r = -EFAULT;
if (copy_from_user(&kvm_sigmask, argp,
- sizeof kvm_sigmask))
+ sizeof(kvm_sigmask)))
goto out;
r = -EINVAL;
- if (kvm_sigmask.len != sizeof sigset)
+ if (kvm_sigmask.len != sizeof(sigset))
goto out;
r = -EFAULT;
if (copy_from_user(&sigset, sigmask_arg->sigset,
- sizeof sigset))
+ sizeof(sigset)))
goto out;
p = &sigset;
}
if (argp) {
r = -EFAULT;
if (copy_from_user(&kvm_sigmask, argp,
- sizeof kvm_sigmask))
+ sizeof(kvm_sigmask)))
goto out;
r = -EINVAL;
- if (kvm_sigmask.len != sizeof csigset)
+ if (kvm_sigmask.len != sizeof(csigset))
goto out;
r = -EFAULT;
if (copy_from_user(&csigset, sigmask_arg->sigset,
- sizeof csigset))
+ sizeof(csigset)))
goto out;
sigset_from_compat(&sigset, &csigset);
r = kvm_vcpu_ioctl_set_sigmask(vcpu, &sigset);
r = -EFAULT;
if (copy_from_user(&kvm_userspace_mem, argp,
- sizeof kvm_userspace_mem))
+ sizeof(kvm_userspace_mem)))
goto out;
r = kvm_vm_ioctl_set_memory_region(kvm, &kvm_userspace_mem);
struct kvm_dirty_log log;
r = -EFAULT;
- if (copy_from_user(&log, argp, sizeof log))
+ if (copy_from_user(&log, argp, sizeof(log)))
goto out;
r = kvm_vm_ioctl_get_dirty_log(kvm, &log);
break;
#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
case KVM_REGISTER_COALESCED_MMIO: {
struct kvm_coalesced_mmio_zone zone;
+
r = -EFAULT;
- if (copy_from_user(&zone, argp, sizeof zone))
+ if (copy_from_user(&zone, argp, sizeof(zone)))
goto out;
r = kvm_vm_ioctl_register_coalesced_mmio(kvm, &zone);
break;
}
case KVM_UNREGISTER_COALESCED_MMIO: {
struct kvm_coalesced_mmio_zone zone;
+
r = -EFAULT;
- if (copy_from_user(&zone, argp, sizeof zone))
+ if (copy_from_user(&zone, argp, sizeof(zone)))
goto out;
r = kvm_vm_ioctl_unregister_coalesced_mmio(kvm, &zone);
break;
struct kvm_irqfd data;
r = -EFAULT;
- if (copy_from_user(&data, argp, sizeof data))
+ if (copy_from_user(&data, argp, sizeof(data)))
goto out;
r = kvm_irqfd(kvm, &data);
break;
struct kvm_ioeventfd data;
r = -EFAULT;
- if (copy_from_user(&data, argp, sizeof data))
+ if (copy_from_user(&data, argp, sizeof(data)))
goto out;
r = kvm_ioeventfd(kvm, &data);
break;
struct kvm_msi msi;
r = -EFAULT;
- if (copy_from_user(&msi, argp, sizeof msi))
+ if (copy_from_user(&msi, argp, sizeof(msi)))
goto out;
r = kvm_send_userspace_msi(kvm, &msi);
break;
struct kvm_irq_level irq_event;
r = -EFAULT;
- if (copy_from_user(&irq_event, argp, sizeof irq_event))
+ if (copy_from_user(&irq_event, argp, sizeof(irq_event)))
goto out;
r = kvm_vm_ioctl_irq_line(kvm, &irq_event,
r = -EFAULT;
if (ioctl == KVM_IRQ_LINE_STATUS) {
- if (copy_to_user(argp, &irq_event, sizeof irq_event))
+ if (copy_to_user(argp, &irq_event, sizeof(irq_event)))
goto out;
}
goto out_free_irq_routing;
r = kvm_set_irq_routing(kvm, entries, routing.nr,
routing.flags);
- out_free_irq_routing:
+out_free_irq_routing:
vfree(entries);
break;
}
if (r) {
cpumask_clear_cpu(cpu, cpus_hardware_enabled);
atomic_inc(&hardware_enable_failed);
- printk(KERN_INFO "kvm: enabling virtualization on "
- "CPU%d failed\n", cpu);
+ pr_info("kvm: enabling virtualization on CPU%d failed\n", cpu);
}
}
val &= ~CPU_TASKS_FROZEN;
switch (val) {
case CPU_DYING:
- printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
+ pr_info("kvm: disabling virtualization on CPU%d\n",
cpu);
hardware_disable();
break;
case CPU_STARTING:
- printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n",
+ pr_info("kvm: enabling virtualization on CPU%d\n",
cpu);
hardware_enable();
break;
*
* And Intel TXT required VMX off for all cpu when system shutdown.
*/
- printk(KERN_INFO "kvm: exiting hardware virtualization\n");
+ pr_info("kvm: exiting hardware virtualization\n");
kvm_rebooting = true;
on_each_cpu(hardware_disable_nolock, NULL, 1);
return NOTIFY_OK;
}
static inline int kvm_io_bus_cmp(const struct kvm_io_range *r1,
- const struct kvm_io_range *r2)
+ const struct kvm_io_range *r2)
{
if (r1->addr < r2->addr)
return -1;
return off;
}
-static int __kvm_io_bus_write(struct kvm_io_bus *bus,
+static int __kvm_io_bus_write(struct kvm_vcpu *vcpu, struct kvm_io_bus *bus,
struct kvm_io_range *range, const void *val)
{
int idx;
while (idx < bus->dev_count &&
kvm_io_bus_cmp(range, &bus->range[idx]) == 0) {
- if (!kvm_iodevice_write(bus->range[idx].dev, range->addr,
+ if (!kvm_iodevice_write(vcpu, bus->range[idx].dev, range->addr,
range->len, val))
return idx;
idx++;
}
/* kvm_io_bus_write - called under kvm->slots_lock */
-int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
+int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
int len, const void *val)
{
struct kvm_io_bus *bus;
.len = len,
};
- bus = srcu_dereference(kvm->buses[bus_idx], &kvm->srcu);
- r = __kvm_io_bus_write(bus, &range, val);
+ bus = srcu_dereference(vcpu->kvm->buses[bus_idx], &vcpu->kvm->srcu);
+ r = __kvm_io_bus_write(vcpu, bus, &range, val);
return r < 0 ? r : 0;
}
/* kvm_io_bus_write_cookie - called under kvm->slots_lock */
-int kvm_io_bus_write_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
- int len, const void *val, long cookie)
+int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
+ gpa_t addr, int len, const void *val, long cookie)
{
struct kvm_io_bus *bus;
struct kvm_io_range range;
.len = len,
};
- bus = srcu_dereference(kvm->buses[bus_idx], &kvm->srcu);
+ bus = srcu_dereference(vcpu->kvm->buses[bus_idx], &vcpu->kvm->srcu);
/* First try the device referenced by cookie. */
if ((cookie >= 0) && (cookie < bus->dev_count) &&
(kvm_io_bus_cmp(&range, &bus->range[cookie]) == 0))
- if (!kvm_iodevice_write(bus->range[cookie].dev, addr, len,
+ if (!kvm_iodevice_write(vcpu, bus->range[cookie].dev, addr, len,
val))
return cookie;
* cookie contained garbage; fall back to search and return the
* correct cookie value.
*/
- return __kvm_io_bus_write(bus, &range, val);
+ return __kvm_io_bus_write(vcpu, bus, &range, val);
}
-static int __kvm_io_bus_read(struct kvm_io_bus *bus, struct kvm_io_range *range,
- void *val)
+static int __kvm_io_bus_read(struct kvm_vcpu *vcpu, struct kvm_io_bus *bus,
+ struct kvm_io_range *range, void *val)
{
int idx;
while (idx < bus->dev_count &&
kvm_io_bus_cmp(range, &bus->range[idx]) == 0) {
- if (!kvm_iodevice_read(bus->range[idx].dev, range->addr,
+ if (!kvm_iodevice_read(vcpu, bus->range[idx].dev, range->addr,
range->len, val))
return idx;
idx++;
EXPORT_SYMBOL_GPL(kvm_io_bus_write);
/* kvm_io_bus_read - called under kvm->slots_lock */
-int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
+int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
int len, void *val)
{
struct kvm_io_bus *bus;
.len = len,
};
- bus = srcu_dereference(kvm->buses[bus_idx], &kvm->srcu);
- r = __kvm_io_bus_read(bus, &range, val);
+ bus = srcu_dereference(vcpu->kvm->buses[bus_idx], &vcpu->kvm->srcu);
+ r = __kvm_io_bus_read(vcpu, bus, &range, val);
return r < 0 ? r : 0;
}
static void kvm_sched_in(struct preempt_notifier *pn, int cpu)
{
struct kvm_vcpu *vcpu = preempt_notifier_to_vcpu(pn);
+
if (vcpu->preempted)
vcpu->preempted = false;
r = misc_register(&kvm_dev);
if (r) {
- printk(KERN_ERR "kvm: misc device register failed\n");
+ pr_err("kvm: misc device register failed\n");
goto out_unreg;
}
r = kvm_init_debug();
if (r) {
- printk(KERN_ERR "kvm: create debugfs files failed\n");
+ pr_err("kvm: create debugfs files failed\n");
goto out_undebugfs;
}
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