KVM: Move drivers/kvm/* to virt/kvm/

Signed-off-by: Avi Kivity <avi@qumranet.com>

2 files changed, 0 insertions, 1456 deletions

diff --git a/drivers/kvm/iodev.h b/drivers/kvm/iodev.h
deleted file mode 100644
index c14e642027b2..000000000000
--- a/drivers/kvm/iodev.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-
-#ifndef __KVM_IODEV_H__
-#define __KVM_IODEV_H__
-
-#include <linux/kvm_types.h>
-
-struct kvm_io_device {
-	void (*read)(struct kvm_io_device *this,
-		     gpa_t addr,
-		     int len,
-		     void *val);
-	void (*write)(struct kvm_io_device *this,
-		      gpa_t addr,
-		      int len,
-		      const void *val);
-	int (*in_range)(struct kvm_io_device *this, gpa_t addr);
-	void (*destructor)(struct kvm_io_device *this);
-
-	void             *private;
-};
-
-static inline void kvm_iodevice_read(struct kvm_io_device *dev,
-				     gpa_t addr,
-				     int len,
-				     void *val)
-{
-	dev->read(dev, addr, len, val);
-}
-
-static inline void kvm_iodevice_write(struct kvm_io_device *dev,
-				      gpa_t addr,
-				      int len,
-				      const void *val)
-{
-	dev->write(dev, addr, len, val);
-}
-
-static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
-{
-	return dev->in_range(dev, addr);
-}
-
-static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
-{
-	if (dev->destructor)
-		dev->destructor(dev);
-}
-
-#endif /* __KVM_IODEV_H__ */
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
deleted file mode 100644
index 4026d7d64296..000000000000
--- a/drivers/kvm/kvm_main.c
+++ /dev/null
@@ -1,1393 +0,0 @@
-/*
- * Kernel-based Virtual Machine driver for Linux
- *
- * This module enables machines with Intel VT-x extensions to run virtual
- * machines without emulation or binary translation.
- *
- * Copyright (C) 2006 Qumranet, Inc.
- *
- * Authors:
- *   Avi Kivity   <avi@qumranet.com>
- *   Yaniv Kamay  <yaniv@qumranet.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- */
-
-#include "iodev.h"
-
-#include <linux/kvm_host.h>
-#include <linux/kvm.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/percpu.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/vmalloc.h>
-#include <linux/reboot.h>
-#include <linux/debugfs.h>
-#include <linux/highmem.h>
-#include <linux/file.h>
-#include <linux/sysdev.h>
-#include <linux/cpu.h>
-#include <linux/sched.h>
-#include <linux/cpumask.h>
-#include <linux/smp.h>
-#include <linux/anon_inodes.h>
-#include <linux/profile.h>
-#include <linux/kvm_para.h>
-#include <linux/pagemap.h>
-#include <linux/mman.h>
-
-#include <asm/processor.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-MODULE_AUTHOR("Qumranet");
-MODULE_LICENSE("GPL");
-
-DEFINE_SPINLOCK(kvm_lock);
-LIST_HEAD(vm_list);
-
-static cpumask_t cpus_hardware_enabled;
-
-struct kmem_cache *kvm_vcpu_cache;
-EXPORT_SYMBOL_GPL(kvm_vcpu_cache);
-
-static __read_mostly struct preempt_ops kvm_preempt_ops;
-
-static struct dentry *debugfs_dir;
-
-static long kvm_vcpu_ioctl(struct file *file, unsigned int ioctl,
-			   unsigned long arg);
-
-static inline int valid_vcpu(int n)
-{
-	return likely(n >= 0 && n < KVM_MAX_VCPUS);
-}
-
-/*
- * Switches to specified vcpu, until a matching vcpu_put()
- */
-void vcpu_load(struct kvm_vcpu *vcpu)
-{
-	int cpu;
-
-	mutex_lock(&vcpu->mutex);
-	cpu = get_cpu();
-	preempt_notifier_register(&vcpu->preempt_notifier);
-	kvm_arch_vcpu_load(vcpu, cpu);
-	put_cpu();
-}
-
-void vcpu_put(struct kvm_vcpu *vcpu)
-{
-	preempt_disable();
-	kvm_arch_vcpu_put(vcpu);
-	preempt_notifier_unregister(&vcpu->preempt_notifier);
-	preempt_enable();
-	mutex_unlock(&vcpu->mutex);
-}
-
-static void ack_flush(void *_completed)
-{
-}
-
-void kvm_flush_remote_tlbs(struct kvm *kvm)
-{
-	int i, cpu;
-	cpumask_t cpus;
-	struct kvm_vcpu *vcpu;
-
-	cpus_clear(cpus);
-	for (i = 0; i < KVM_MAX_VCPUS; ++i) {
-		vcpu = kvm->vcpus[i];
-		if (!vcpu)
-			continue;
-		if (test_and_set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
-			continue;
-		cpu = vcpu->cpu;
-		if (cpu != -1 && cpu != raw_smp_processor_id())
-			cpu_set(cpu, cpus);
-	}
-	if (cpus_empty(cpus))
-		return;
-	++kvm->stat.remote_tlb_flush;
-	smp_call_function_mask(cpus, ack_flush, NULL, 1);
-}
-
-int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
-{
-	struct page *page;
-	int r;
-
-	mutex_init(&vcpu->mutex);
-	vcpu->cpu = -1;
-	vcpu->kvm = kvm;
-	vcpu->vcpu_id = id;
-	init_waitqueue_head(&vcpu->wq);
-
-	page = alloc_page(GFP_KERNEL | __GFP_ZERO);
-	if (!page) {
-		r = -ENOMEM;
-		goto fail;
-	}
-	vcpu->run = page_address(page);
-
-	r = kvm_arch_vcpu_init(vcpu);
-	if (r < 0)
-		goto fail_free_run;
-	return 0;
-
-fail_free_run:
-	free_page((unsigned long)vcpu->run);
-fail:
-	return r;
-}
-EXPORT_SYMBOL_GPL(kvm_vcpu_init);
-
-void kvm_vcpu_uninit(struct kvm_vcpu *vcpu)
-{
-	kvm_arch_vcpu_uninit(vcpu);
-	free_page((unsigned long)vcpu->run);
-}
-EXPORT_SYMBOL_GPL(kvm_vcpu_uninit);
-
-static struct kvm *kvm_create_vm(void)
-{
-	struct kvm *kvm = kvm_arch_create_vm();
-
-	if (IS_ERR(kvm))
-		goto out;
-
-	kvm->mm = current->mm;
-	atomic_inc(&kvm->mm->mm_count);
-	kvm_io_bus_init(&kvm->pio_bus);
-	mutex_init(&kvm->lock);
-	kvm_io_bus_init(&kvm->mmio_bus);
-	spin_lock(&kvm_lock);
-	list_add(&kvm->vm_list, &vm_list);
-	spin_unlock(&kvm_lock);
-out:
-	return kvm;
-}
-
-/*
- * Free any memory in @free but not in @dont.
- */
-static void kvm_free_physmem_slot(struct kvm_memory_slot *free,
-				  struct kvm_memory_slot *dont)
-{
-	if (!dont || free->rmap != dont->rmap)
-		vfree(free->rmap);
-
-	if (!dont || free->dirty_bitmap != dont->dirty_bitmap)
-		vfree(free->dirty_bitmap);
-
-	free->npages = 0;
-	free->dirty_bitmap = NULL;
-	free->rmap = NULL;
-}
-
-void kvm_free_physmem(struct kvm *kvm)
-{
-	int i;
-
-	for (i = 0; i < kvm->nmemslots; ++i)
-		kvm_free_physmem_slot(&kvm->memslots[i], NULL);
-}
-
-static void kvm_destroy_vm(struct kvm *kvm)
-{
-	struct mm_struct *mm = kvm->mm;
-
-	spin_lock(&kvm_lock);
-	list_del(&kvm->vm_list);
-	spin_unlock(&kvm_lock);
-	kvm_io_bus_destroy(&kvm->pio_bus);
-	kvm_io_bus_destroy(&kvm->mmio_bus);
-	kvm_arch_destroy_vm(kvm);
-	mmdrop(mm);
-}
-
-static int kvm_vm_release(struct inode *inode, struct file *filp)
-{
-	struct kvm *kvm = filp->private_data;
-
-	kvm_destroy_vm(kvm);
-	return 0;
-}
-
-/*
- * Allocate some memory and give it an address in the guest physical address
- * space.
- *
- * Discontiguous memory is allowed, mostly for framebuffers.
- *
- * Must be called holding kvm->lock.
- */
-int __kvm_set_memory_region(struct kvm *kvm,
-			    struct kvm_userspace_memory_region *mem,
-			    int user_alloc)
-{
-	int r;
-	gfn_t base_gfn;
-	unsigned long npages;
-	unsigned long i;
-	struct kvm_memory_slot *memslot;
-	struct kvm_memory_slot old, new;
-
-	r = -EINVAL;
-	/* General sanity checks */
-	if (mem->memory_size & (PAGE_SIZE - 1))
-		goto out;
-	if (mem->guest_phys_addr & (PAGE_SIZE - 1))
-		goto out;
-	if (mem->slot >= KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
-		goto out;
-	if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)
-		goto out;
-
-	memslot = &kvm->memslots[mem->slot];
-	base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
-	npages = mem->memory_size >> PAGE_SHIFT;
-
-	if (!npages)
-		mem->flags &= ~KVM_MEM_LOG_DIRTY_PAGES;
-
-	new = old = *memslot;
-
-	new.base_gfn = base_gfn;
-	new.npages = npages;
-	new.flags = mem->flags;
-
-	/* Disallow changing a memory slot's size. */
-	r = -EINVAL;
-	if (npages && old.npages && npages != old.npages)
-		goto out_free;
-
-	/* Check for overlaps */
-	r = -EEXIST;
-	for (i = 0; i < KVM_MEMORY_SLOTS; ++i) {
-		struct kvm_memory_slot *s = &kvm->memslots[i];
-
-		if (s == memslot)
-			continue;
-		if (!((base_gfn + npages <= s->base_gfn) ||
-		      (base_gfn >= s->base_gfn + s->npages)))
-			goto out_free;
-	}
-
-	/* Free page dirty bitmap if unneeded */
-	if (!(new.flags & KVM_MEM_LOG_DIRTY_PAGES))
-		new.dirty_bitmap = NULL;
-
-	r = -ENOMEM;
-
-	/* Allocate if a slot is being created */
-	if (npages && !new.rmap) {
-		new.rmap = vmalloc(npages * sizeof(struct page *));
-
-		if (!new.rmap)
-			goto out_free;
-
-		memset(new.rmap, 0, npages * sizeof(*new.rmap));
-
-		new.user_alloc = user_alloc;
-		new.userspace_addr = mem->userspace_addr;
-	}
-
-	/* Allocate page dirty bitmap if needed */
-	if ((new.flags & KVM_MEM_LOG_DIRTY_PAGES) && !new.dirty_bitmap) {
-		unsigned dirty_bytes = ALIGN(npages, BITS_PER_LONG) / 8;
-
-		new.dirty_bitmap = vmalloc(dirty_bytes);
-		if (!new.dirty_bitmap)
-			goto out_free;
-		memset(new.dirty_bitmap, 0, dirty_bytes);
-	}
-
-	if (mem->slot >= kvm->nmemslots)
-		kvm->nmemslots = mem->slot + 1;
-
-	*memslot = new;
-
-	r = kvm_arch_set_memory_region(kvm, mem, old, user_alloc);
-	if (r) {
-		*memslot = old;
-		goto out_free;
-	}
-
-	kvm_free_physmem_slot(&old, &new);
-	return 0;
-
-out_free:
-	kvm_free_physmem_slot(&new, &old);
-out:
-	return r;
-
-}
-EXPORT_SYMBOL_GPL(__kvm_set_memory_region);
-
-int kvm_set_memory_region(struct kvm *kvm,
-			  struct kvm_userspace_memory_region *mem,
-			  int user_alloc)
-{
-	int r;
-
-	mutex_lock(&kvm->lock);
-	r = __kvm_set_memory_region(kvm, mem, user_alloc);
-	mutex_unlock(&kvm->lock);
-	return r;
-}
-EXPORT_SYMBOL_GPL(kvm_set_memory_region);
-
-int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
-				   struct
-				   kvm_userspace_memory_region *mem,
-				   int user_alloc)
-{
-	if (mem->slot >= KVM_MEMORY_SLOTS)
-		return -EINVAL;
-	return kvm_set_memory_region(kvm, mem, user_alloc);
-}
-
-int kvm_get_dirty_log(struct kvm *kvm,
-			struct kvm_dirty_log *log, int *is_dirty)
-{
-	struct kvm_memory_slot *memslot;
-	int r, i;
-	int n;
-	unsigned long any = 0;
-
-	r = -EINVAL;
-	if (log->slot >= KVM_MEMORY_SLOTS)
-		goto out;
-
-	memslot = &kvm->memslots[log->slot];
-	r = -ENOENT;
-	if (!memslot->dirty_bitmap)
-		goto out;
-
-	n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
-
-	for (i = 0; !any && i < n/sizeof(long); ++i)
-		any = memslot->dirty_bitmap[i];
-
-	r = -EFAULT;
-	if (copy_to_user(log->dirty_bitmap, memslot->dirty_bitmap, n))
-		goto out;
-
-	if (any)
-		*is_dirty = 1;
-
-	r = 0;
-out:
-	return r;
-}
-
-int is_error_page(struct page *page)
-{
-	return page == bad_page;
-}
-EXPORT_SYMBOL_GPL(is_error_page);
-
-static inline unsigned long bad_hva(void)
-{
-	return PAGE_OFFSET;
-}
-
-int kvm_is_error_hva(unsigned long addr)
-{
-	return addr == bad_hva();
-}
-EXPORT_SYMBOL_GPL(kvm_is_error_hva);
-
-static struct kvm_memory_slot *__gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
-{
-	int i;
-
-	for (i = 0; i < kvm->nmemslots; ++i) {
-		struct kvm_memory_slot *memslot = &kvm->memslots[i];
-
-		if (gfn >= memslot->base_gfn
-		    && gfn < memslot->base_gfn + memslot->npages)
-			return memslot;
-	}
-	return NULL;
-}
-
-struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
-{
-	gfn = unalias_gfn(kvm, gfn);
-	return __gfn_to_memslot(kvm, gfn);
-}
-
-int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn)
-{
-	int i;
-
-	gfn = unalias_gfn(kvm, gfn);
-	for (i = 0; i < KVM_MEMORY_SLOTS; ++i) {
-		struct kvm_memory_slot *memslot = &kvm->memslots[i];
-
-		if (gfn >= memslot->base_gfn
-		    && gfn < memslot->base_gfn + memslot->npages)
-			return 1;
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_is_visible_gfn);
-
-static unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn)
-{
-	struct kvm_memory_slot *slot;
-
-	gfn = unalias_gfn(kvm, gfn);
-	slot = __gfn_to_memslot(kvm, gfn);
-	if (!slot)
-		return bad_hva();
-	return (slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE);
-}
-
-/*
- * Requires current->mm->mmap_sem to be held
- */
-static struct page *__gfn_to_page(struct kvm *kvm, gfn_t gfn)
-{
-	struct page *page[1];
-	unsigned long addr;
-	int npages;
-
-	might_sleep();
-
-	addr = gfn_to_hva(kvm, gfn);
-	if (kvm_is_error_hva(addr)) {
-		get_page(bad_page);
-		return bad_page;
-	}
-
-	npages = get_user_pages(current, current->mm, addr, 1, 1, 1, page,
-				NULL);
-
-	if (npages != 1) {
-		get_page(bad_page);
-		return bad_page;
-	}
-
-	return page[0];
-}
-
-struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn)
-{
-	struct page *page;
-
-	down_read(&current->mm->mmap_sem);
-	page = __gfn_to_page(kvm, gfn);
-	up_read(&current->mm->mmap_sem);
-
-	return page;
-}
-
-EXPORT_SYMBOL_GPL(gfn_to_page);
-
-void kvm_release_page_clean(struct page *page)
-{
-	put_page(page);
-}
-EXPORT_SYMBOL_GPL(kvm_release_page_clean);
-
-void kvm_release_page_dirty(struct page *page)
-{
-	if (!PageReserved(page))
-		SetPageDirty(page);
-	put_page(page);
-}
-EXPORT_SYMBOL_GPL(kvm_release_page_dirty);
-
-static int next_segment(unsigned long len, int offset)
-{
-	if (len > PAGE_SIZE - offset)
-		return PAGE_SIZE - offset;
-	else
-		return len;
-}
-
-int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
-			int len)
-{
-	int r;
-	unsigned long addr;
-
-	addr = gfn_to_hva(kvm, gfn);
-	if (kvm_is_error_hva(addr))
-		return -EFAULT;
-	r = copy_from_user(data, (void __user *)addr + offset, len);
-	if (r)
-		return -EFAULT;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_read_guest_page);
-
-int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len)
-{
-	gfn_t gfn = gpa >> PAGE_SHIFT;
-	int seg;
-	int offset = offset_in_page(gpa);
-	int ret;
-
-	while ((seg = next_segment(len, offset)) != 0) {
-		ret = kvm_read_guest_page(kvm, gfn, data, offset, seg);
-		if (ret < 0)
-			return ret;
-		offset = 0;
-		len -= seg;
-		data += seg;
-		++gfn;
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_read_guest);
-
-int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
-			 int offset, int len)
-{
-	int r;
-	unsigned long addr;
-
-	addr = gfn_to_hva(kvm, gfn);
-	if (kvm_is_error_hva(addr))
-		return -EFAULT;
-	r = copy_to_user((void __user *)addr + offset, data, len);
-	if (r)
-		return -EFAULT;
-	mark_page_dirty(kvm, gfn);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_write_guest_page);
-
-int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
-		    unsigned long len)
-{
-	gfn_t gfn = gpa >> PAGE_SHIFT;
-	int seg;
-	int offset = offset_in_page(gpa);
-	int ret;
-
-	while ((seg = next_segment(len, offset)) != 0) {
-		ret = kvm_write_guest_page(kvm, gfn, data, offset, seg);
-		if (ret < 0)
-			return ret;
-		offset = 0;
-		len -= seg;
-		data += seg;
-		++gfn;
-	}
-	return 0;
-}
-
-int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len)
-{
-	return kvm_write_guest_page(kvm, gfn, empty_zero_page, offset, len);
-}
-EXPORT_SYMBOL_GPL(kvm_clear_guest_page);
-
-int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len)
-{
-	gfn_t gfn = gpa >> PAGE_SHIFT;
-	int seg;
-	int offset = offset_in_page(gpa);
-	int ret;
-
-        while ((seg = next_segment(len, offset)) != 0) {
-		ret = kvm_clear_guest_page(kvm, gfn, offset, seg);
-		if (ret < 0)
-			return ret;
-		offset = 0;
-		len -= seg;
-		++gfn;
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_clear_guest);
-
-void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
-{
-	struct kvm_memory_slot *memslot;
-
-	gfn = unalias_gfn(kvm, gfn);
-	memslot = __gfn_to_memslot(kvm, gfn);
-	if (memslot && memslot->dirty_bitmap) {
-		unsigned long rel_gfn = gfn - memslot->base_gfn;
-
-		/* avoid RMW */
-		if (!test_bit(rel_gfn, memslot->dirty_bitmap))
-			set_bit(rel_gfn, memslot->dirty_bitmap);
-	}
-}
-
-/*
- * The vCPU has executed a HLT instruction with in-kernel mode enabled.
- */
-void kvm_vcpu_block(struct kvm_vcpu *vcpu)
-{
-	DECLARE_WAITQUEUE(wait, current);
-
-	add_wait_queue(&vcpu->wq, &wait);
-
-	/*
-	 * We will block until either an interrupt or a signal wakes us up
-	 */
-	while (!kvm_cpu_has_interrupt(vcpu)
-	       && !signal_pending(current)
-	       && !kvm_arch_vcpu_runnable(vcpu)) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		vcpu_put(vcpu);
-		schedule();
-		vcpu_load(vcpu);
-	}
-
-	__set_current_state(TASK_RUNNING);
-	remove_wait_queue(&vcpu->wq, &wait);
-}
-
-void kvm_resched(struct kvm_vcpu *vcpu)
-{
-	if (!need_resched())
-		return;
-	cond_resched();
-}
-EXPORT_SYMBOL_GPL(kvm_resched);
-
-static int kvm_vcpu_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
-	struct kvm_vcpu *vcpu = vma->vm_file->private_data;
-	struct page *page;
-
-	if (vmf->pgoff == 0)
-		page = virt_to_page(vcpu->run);
-	else if (vmf->pgoff == KVM_PIO_PAGE_OFFSET)
-		page = virt_to_page(vcpu->arch.pio_data);
-	else
-		return VM_FAULT_SIGBUS;
-	get_page(page);
-	vmf->page = page;
-	return 0;
-}
-
-static struct vm_operations_struct kvm_vcpu_vm_ops = {
-	.fault = kvm_vcpu_fault,
-};
-
-static int kvm_vcpu_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	vma->vm_ops = &kvm_vcpu_vm_ops;
-	return 0;
-}
-
-static int kvm_vcpu_release(struct inode *inode, struct file *filp)
-{
-	struct kvm_vcpu *vcpu = filp->private_data;
-
-	fput(vcpu->kvm->filp);
-	return 0;
-}
-
-static struct file_operations kvm_vcpu_fops = {
-	.release        = kvm_vcpu_release,
-	.unlocked_ioctl = kvm_vcpu_ioctl,
-	.compat_ioctl   = kvm_vcpu_ioctl,
-	.mmap           = kvm_vcpu_mmap,
-};
-
-/*
- * Allocates an inode for the vcpu.
- */
-static int create_vcpu_fd(struct kvm_vcpu *vcpu)
-{
-	int fd, r;
-	struct inode *inode;
-	struct file *file;
-
-	r = anon_inode_getfd(&fd, &inode, &file,
-			     "kvm-vcpu", &kvm_vcpu_fops, vcpu);
-	if (r)
-		return r;
-	atomic_inc(&vcpu->kvm->filp->f_count);
-	return fd;
-}
-
-/*
- * Creates some virtual cpus.  Good luck creating more than one.
- */
-static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, int n)
-{
-	int r;
-	struct kvm_vcpu *vcpu;
-
-	if (!valid_vcpu(n))
-		return -EINVAL;
-
-	vcpu = kvm_arch_vcpu_create(kvm, n);
-	if (IS_ERR(vcpu))
-		return PTR_ERR(vcpu);
-
-	preempt_notifier_init(&vcpu->preempt_notifier, &kvm_preempt_ops);
-
-	r = kvm_arch_vcpu_setup(vcpu);
-	if (r)
-		goto vcpu_destroy;
-
-	mutex_lock(&kvm->lock);
-	if (kvm->vcpus[n]) {
-		r = -EEXIST;
-		mutex_unlock(&kvm->lock);
-		goto vcpu_destroy;
-	}
-	kvm->vcpus[n] = vcpu;
-	mutex_unlock(&kvm->lock);
-
-	/* Now it's all set up, let userspace reach it */
-	r = create_vcpu_fd(vcpu);
-	if (r < 0)
-		goto unlink;
-	return r;
-
-unlink:
-	mutex_lock(&kvm->lock);
-	kvm->vcpus[n] = NULL;
-	mutex_unlock(&kvm->lock);
-vcpu_destroy:
-	kvm_arch_vcpu_destroy(vcpu);
-	return r;
-}
-
-static int kvm_vcpu_ioctl_set_sigmask(struct kvm_vcpu *vcpu, sigset_t *sigset)
-{
-	if (sigset) {
-		sigdelsetmask(sigset, sigmask(SIGKILL)|sigmask(SIGSTOP));
-		vcpu->sigset_active = 1;
-		vcpu->sigset = *sigset;
-	} else
-		vcpu->sigset_active = 0;
-	return 0;
-}
-
-static long kvm_vcpu_ioctl(struct file *filp,
-			   unsigned int ioctl, unsigned long arg)
-{
-	struct kvm_vcpu *vcpu = filp->private_data;
-	void __user *argp = (void __user *)arg;
-	int r;
-
-	if (vcpu->kvm->mm != current->mm)
-		return -EIO;
-	switch (ioctl) {
-	case KVM_RUN:
-		r = -EINVAL;
-		if (arg)
-			goto out;
-		r = kvm_arch_vcpu_ioctl_run(vcpu, vcpu->run);
-		break;
-	case KVM_GET_REGS: {
-		struct kvm_regs kvm_regs;
-
-		memset(&kvm_regs, 0, sizeof kvm_regs);
-		r = kvm_arch_vcpu_ioctl_get_regs(vcpu, &kvm_regs);
-		if (r)
-			goto out;
-		r = -EFAULT;
-		if (copy_to_user(argp, &kvm_regs, sizeof kvm_regs))
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_SET_REGS: {
-		struct kvm_regs kvm_regs;
-
-		r = -EFAULT;
-		if (copy_from_user(&kvm_regs, argp, sizeof kvm_regs))
-			goto out;
-		r = kvm_arch_vcpu_ioctl_set_regs(vcpu, &kvm_regs);
-		if (r)
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_GET_SREGS: {
-		struct kvm_sregs kvm_sregs;
-
-		memset(&kvm_sregs, 0, sizeof kvm_sregs);
-		r = kvm_arch_vcpu_ioctl_get_sregs(vcpu, &kvm_sregs);
-		if (r)
-			goto out;
-		r = -EFAULT;
-		if (copy_to_user(argp, &kvm_sregs, sizeof kvm_sregs))
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_SET_SREGS: {
-		struct kvm_sregs kvm_sregs;
-
-		r = -EFAULT;
-		if (copy_from_user(&kvm_sregs, argp, sizeof kvm_sregs))
-			goto out;
-		r = kvm_arch_vcpu_ioctl_set_sregs(vcpu, &kvm_sregs);
-		if (r)
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_TRANSLATE: {
-		struct kvm_translation tr;
-
-		r = -EFAULT;
-		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))
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_DEBUG_GUEST: {
-		struct kvm_debug_guest dbg;
-
-		r = -EFAULT;
-		if (copy_from_user(&dbg, argp, sizeof dbg))
-			goto out;
-		r = kvm_arch_vcpu_ioctl_debug_guest(vcpu, &dbg);
-		if (r)
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_SET_SIGNAL_MASK: {
-		struct kvm_signal_mask __user *sigmask_arg = argp;
-		struct kvm_signal_mask kvm_sigmask;
-		sigset_t sigset, *p;
-
-		p = NULL;
-		if (argp) {
-			r = -EFAULT;
-			if (copy_from_user(&kvm_sigmask, argp,
-					   sizeof kvm_sigmask))
-				goto out;
-			r = -EINVAL;
-			if (kvm_sigmask.len != sizeof sigset)
-				goto out;
-			r = -EFAULT;
-			if (copy_from_user(&sigset, sigmask_arg->sigset,
-					   sizeof sigset))
-				goto out;
-			p = &sigset;
-		}
-		r = kvm_vcpu_ioctl_set_sigmask(vcpu, &sigset);
-		break;
-	}
-	case KVM_GET_FPU: {
-		struct kvm_fpu fpu;
-
-		memset(&fpu, 0, sizeof fpu);
-		r = kvm_arch_vcpu_ioctl_get_fpu(vcpu, &fpu);
-		if (r)
-			goto out;
-		r = -EFAULT;
-		if (copy_to_user(argp, &fpu, sizeof fpu))
-			goto out;
-		r = 0;
-		break;
-	}
-	case KVM_SET_FPU: {
-		struct kvm_fpu fpu;
-
-		r = -EFAULT;
-		if (copy_from_user(&fpu, argp, sizeof fpu))
-			goto out;
-		r = kvm_arch_vcpu_ioctl_set_fpu(vcpu, &fpu);
-		if (r)
-			goto out;
-		r = 0;
-		break;
-	}
-	default:
-		r = kvm_arch_vcpu_ioctl(filp, ioctl, arg);
-	}
-out:
-	return r;
-}
-
-static long kvm_vm_ioctl(struct file *filp,
-			   unsigned int ioctl, unsigned long arg)
-{
-	struct kvm *kvm = filp->private_data;
-	void __user *argp = (void __user *)arg;
-	int r;
-
-	if (kvm->mm != current->mm)
-		return -EIO;
-	switch (ioctl) {
-	case KVM_CREATE_VCPU:
-		r = kvm_vm_ioctl_create_vcpu(kvm, arg);
-		if (r < 0)
-			goto out;
-		break;
-	case KVM_SET_USER_MEMORY_REGION: {
-		struct kvm_userspace_memory_region kvm_userspace_mem;
-
-		r = -EFAULT;
-		if (copy_from_user(&kvm_userspace_mem, argp,
-						sizeof kvm_userspace_mem))
-			goto out;
-
-		r = kvm_vm_ioctl_set_memory_region(kvm, &kvm_userspace_mem, 1);
-		if (r)
-			goto out;
-		break;
-	}
-	case KVM_GET_DIRTY_LOG: {
-		struct kvm_dirty_log log;
-
-		r = -EFAULT;
-		if (copy_from_user(&log, argp, sizeof log))
-			goto out;
-		r = kvm_vm_ioctl_get_dirty_log(kvm, &log);
-		if (r)
-			goto out;
-		break;
-	}
-	default:
-		r = kvm_arch_vm_ioctl(filp, ioctl, arg);
-	}
-out:
-	return r;
-}
-
-static int kvm_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
-	struct kvm *kvm = vma->vm_file->private_data;
-	struct page *page;
-
-	if (!kvm_is_visible_gfn(kvm, vmf->pgoff))
-		return VM_FAULT_SIGBUS;
-	/* current->mm->mmap_sem is already held so call lockless version */
-	page = __gfn_to_page(kvm, vmf->pgoff);
-	if (is_error_page(page)) {
-		kvm_release_page_clean(page);
-		return VM_FAULT_SIGBUS;
-	}
-	vmf->page = page;
-	return 0;
-}
-
-static struct vm_operations_struct kvm_vm_vm_ops = {
-	.fault = kvm_vm_fault,
-};
-
-static int kvm_vm_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	vma->vm_ops = &kvm_vm_vm_ops;
-	return 0;
-}
-
-static struct file_operations kvm_vm_fops = {
-	.release        = kvm_vm_release,
-	.unlocked_ioctl = kvm_vm_ioctl,
-	.compat_ioctl   = kvm_vm_ioctl,
-	.mmap           = kvm_vm_mmap,
-};
-
-static int kvm_dev_ioctl_create_vm(void)
-{
-	int fd, r;
-	struct inode *inode;
-	struct file *file;
-	struct kvm *kvm;
-
-	kvm = kvm_create_vm();
-	if (IS_ERR(kvm))
-		return PTR_ERR(kvm);
-	r = anon_inode_getfd(&fd, &inode, &file, "kvm-vm", &kvm_vm_fops, kvm);
-	if (r) {
-		kvm_destroy_vm(kvm);
-		return r;
-	}
-
-	kvm->filp = file;
-
-	return fd;
-}
-
-static long kvm_dev_ioctl(struct file *filp,
-			  unsigned int ioctl, unsigned long arg)
-{
-	void __user *argp = (void __user *)arg;
-	long r = -EINVAL;
-
-	switch (ioctl) {
-	case KVM_GET_API_VERSION:
-		r = -EINVAL;
-		if (arg)
-			goto out;
-		r = KVM_API_VERSION;
-		break;
-	case KVM_CREATE_VM:
-		r = -EINVAL;
-		if (arg)
-			goto out;
-		r = kvm_dev_ioctl_create_vm();
-		break;
-	case KVM_CHECK_EXTENSION:
-		r = kvm_dev_ioctl_check_extension((long)argp);
-		break;
-	case KVM_GET_VCPU_MMAP_SIZE:
-		r = -EINVAL;
-		if (arg)
-			goto out;
-		r = 2 * PAGE_SIZE;
-		break;
-	default:
-		return kvm_arch_dev_ioctl(filp, ioctl, arg);
-	}
-out:
-	return r;
-}
-
-static struct file_operations kvm_chardev_ops = {
-	.unlocked_ioctl = kvm_dev_ioctl,
-	.compat_ioctl   = kvm_dev_ioctl,
-};
-
-static struct miscdevice kvm_dev = {
-	KVM_MINOR,
-	"kvm",
-	&kvm_chardev_ops,
-};
-
-static void hardware_enable(void *junk)
-{
-	int cpu = raw_smp_processor_id();
-
-	if (cpu_isset(cpu, cpus_hardware_enabled))
-		return;
-	cpu_set(cpu, cpus_hardware_enabled);
-	kvm_arch_hardware_enable(NULL);
-}
-
-static void hardware_disable(void *junk)
-{
-	int cpu = raw_smp_processor_id();
-
-	if (!cpu_isset(cpu, cpus_hardware_enabled))
-		return;
-	cpu_clear(cpu, cpus_hardware_enabled);
-	decache_vcpus_on_cpu(cpu);
-	kvm_arch_hardware_disable(NULL);
-}
-
-static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val,
-			   void *v)
-{
-	int cpu = (long)v;
-
-	val &= ~CPU_TASKS_FROZEN;
-	switch (val) {
-	case CPU_DYING:
-		printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
-		       cpu);
-		hardware_disable(NULL);
-		break;
-	case CPU_UP_CANCELED:
-		printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
-		       cpu);
-		smp_call_function_single(cpu, hardware_disable, NULL, 0, 1);
-		break;
-	case CPU_ONLINE:
-		printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n",
-		       cpu);
-		smp_call_function_single(cpu, hardware_enable, NULL, 0, 1);
-		break;
-	}
-	return NOTIFY_OK;
-}
-
-static int kvm_reboot(struct notifier_block *notifier, unsigned long val,
-		      void *v)
-{
-	if (val == SYS_RESTART) {
-		/*
-		 * Some (well, at least mine) BIOSes hang on reboot if
-		 * in vmx root mode.
-		 */
-		printk(KERN_INFO "kvm: exiting hardware virtualization\n");
-		on_each_cpu(hardware_disable, NULL, 0, 1);
-	}
-	return NOTIFY_OK;
-}
-
-static struct notifier_block kvm_reboot_notifier = {
-	.notifier_call = kvm_reboot,
-	.priority = 0,
-};
-
-void kvm_io_bus_init(struct kvm_io_bus *bus)
-{
-	memset(bus, 0, sizeof(*bus));
-}
-
-void kvm_io_bus_destroy(struct kvm_io_bus *bus)
-{
-	int i;
-
-	for (i = 0; i < bus->dev_count; i++) {
-		struct kvm_io_device *pos = bus->devs[i];
-
-		kvm_iodevice_destructor(pos);
-	}
-}
-
-struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr)
-{
-	int i;
-
-	for (i = 0; i < bus->dev_count; i++) {
-		struct kvm_io_device *pos = bus->devs[i];
-
-		if (pos->in_range(pos, addr))
-			return pos;
-	}
-
-	return NULL;
-}
-
-void kvm_io_bus_register_dev(struct kvm_io_bus *bus, struct kvm_io_device *dev)
-{
-	BUG_ON(bus->dev_count > (NR_IOBUS_DEVS-1));
-
-	bus->devs[bus->dev_count++] = dev;
-}
-
-static struct notifier_block kvm_cpu_notifier = {
-	.notifier_call = kvm_cpu_hotplug,
-	.priority = 20, /* must be > scheduler priority */
-};
-
-static u64 vm_stat_get(void *_offset)
-{
-	unsigned offset = (long)_offset;
-	u64 total = 0;
-	struct kvm *kvm;
-
-	spin_lock(&kvm_lock);
-	list_for_each_entry(kvm, &vm_list, vm_list)
-		total += *(u32 *)((void *)kvm + offset);
-	spin_unlock(&kvm_lock);
-	return total;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(vm_stat_fops, vm_stat_get, NULL, "%llu\n");
-
-static u64 vcpu_stat_get(void *_offset)
-{
-	unsigned offset = (long)_offset;
-	u64 total = 0;
-	struct kvm *kvm;
-	struct kvm_vcpu *vcpu;
-	int i;
-
-	spin_lock(&kvm_lock);
-	list_for_each_entry(kvm, &vm_list, vm_list)
-		for (i = 0; i < KVM_MAX_VCPUS; ++i) {
-			vcpu = kvm->vcpus[i];
-			if (vcpu)
-				total += *(u32 *)((void *)vcpu + offset);
-		}
-	spin_unlock(&kvm_lock);
-	return total;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(vcpu_stat_fops, vcpu_stat_get, NULL, "%llu\n");
-
-static struct file_operations *stat_fops[] = {
-	[KVM_STAT_VCPU] = &vcpu_stat_fops,
-	[KVM_STAT_VM]   = &vm_stat_fops,
-};
-
-static void kvm_init_debug(void)
-{
-	struct kvm_stats_debugfs_item *p;
-
-	debugfs_dir = debugfs_create_dir("kvm", NULL);
-	for (p = debugfs_entries; p->name; ++p)
-		p->dentry = debugfs_create_file(p->name, 0444, debugfs_dir,
-						(void *)(long)p->offset,
-						stat_fops[p->kind]);
-}
-
-static void kvm_exit_debug(void)
-{
-	struct kvm_stats_debugfs_item *p;
-
-	for (p = debugfs_entries; p->name; ++p)
-		debugfs_remove(p->dentry);
-	debugfs_remove(debugfs_dir);
-}
-
-static int kvm_suspend(struct sys_device *dev, pm_message_t state)
-{
-	hardware_disable(NULL);
-	return 0;
-}
-
-static int kvm_resume(struct sys_device *dev)
-{
-	hardware_enable(NULL);
-	return 0;
-}
-
-static struct sysdev_class kvm_sysdev_class = {
-	.name = "kvm",
-	.suspend = kvm_suspend,
-	.resume = kvm_resume,
-};
-
-static struct sys_device kvm_sysdev = {
-	.id = 0,
-	.cls = &kvm_sysdev_class,
-};
-
-struct page *bad_page;
-
-static inline
-struct kvm_vcpu *preempt_notifier_to_vcpu(struct preempt_notifier *pn)
-{
-	return container_of(pn, struct kvm_vcpu, preempt_notifier);
-}
-
-static void kvm_sched_in(struct preempt_notifier *pn, int cpu)
-{
-	struct kvm_vcpu *vcpu = preempt_notifier_to_vcpu(pn);
-
-	kvm_arch_vcpu_load(vcpu, cpu);
-}
-
-static void kvm_sched_out(struct preempt_notifier *pn,
-			  struct task_struct *next)
-{
-	struct kvm_vcpu *vcpu = preempt_notifier_to_vcpu(pn);
-
-	kvm_arch_vcpu_put(vcpu);
-}
-
-int kvm_init(void *opaque, unsigned int vcpu_size,
-		  struct module *module)
-{
-	int r;
-	int cpu;
-
-	kvm_init_debug();
-
-	r = kvm_arch_init(opaque);
-	if (r)
-		goto out_fail;
-
-	bad_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
-
-	if (bad_page == NULL) {
-		r = -ENOMEM;
-		goto out;
-	}
-
-	r = kvm_arch_hardware_setup();
-	if (r < 0)
-		goto out_free_0;
-
-	for_each_online_cpu(cpu) {
-		smp_call_function_single(cpu,
-				kvm_arch_check_processor_compat,
-				&r, 0, 1);
-		if (r < 0)
-			goto out_free_1;
-	}
-
-	on_each_cpu(hardware_enable, NULL, 0, 1);
-	r = register_cpu_notifier(&kvm_cpu_notifier);
-	if (r)
-		goto out_free_2;
-	register_reboot_notifier(&kvm_reboot_notifier);
-
-	r = sysdev_class_register(&kvm_sysdev_class);
-	if (r)
-		goto out_free_3;
-
-	r = sysdev_register(&kvm_sysdev);
-	if (r)
-		goto out_free_4;
-
-	/* A kmem cache lets us meet the alignment requirements of fx_save. */
-	kvm_vcpu_cache = kmem_cache_create("kvm_vcpu", vcpu_size,
-					   __alignof__(struct kvm_vcpu),
-					   0, NULL);
-	if (!kvm_vcpu_cache) {
-		r = -ENOMEM;
-		goto out_free_5;
-	}
-
-	kvm_chardev_ops.owner = module;
-
-	r = misc_register(&kvm_dev);
-	if (r) {
-		printk(KERN_ERR "kvm: misc device register failed\n");
-		goto out_free;
-	}
-
-	kvm_preempt_ops.sched_in = kvm_sched_in;
-	kvm_preempt_ops.sched_out = kvm_sched_out;
-
-	return 0;
-
-out_free:
-	kmem_cache_destroy(kvm_vcpu_cache);
-out_free_5:
-	sysdev_unregister(&kvm_sysdev);
-out_free_4:
-	sysdev_class_unregister(&kvm_sysdev_class);
-out_free_3:
-	unregister_reboot_notifier(&kvm_reboot_notifier);
-	unregister_cpu_notifier(&kvm_cpu_notifier);
-out_free_2:
-	on_each_cpu(hardware_disable, NULL, 0, 1);
-out_free_1:
-	kvm_arch_hardware_unsetup();
-out_free_0:
-	__free_page(bad_page);
-out:
-	kvm_arch_exit();
-	kvm_exit_debug();
-out_fail:
-	return r;
-}
-EXPORT_SYMBOL_GPL(kvm_init);
-
-void kvm_exit(void)
-{
-	misc_deregister(&kvm_dev);
-	kmem_cache_destroy(kvm_vcpu_cache);
-	sysdev_unregister(&kvm_sysdev);
-	sysdev_class_unregister(&kvm_sysdev_class);
-	unregister_reboot_notifier(&kvm_reboot_notifier);
-	unregister_cpu_notifier(&kvm_cpu_notifier);
-	on_each_cpu(hardware_disable, NULL, 0, 1);
-	kvm_arch_hardware_unsetup();
-	kvm_arch_exit();
-	kvm_exit_debug();
-	__free_page(bad_page);
-}
-EXPORT_SYMBOL_GPL(kvm_exit);