Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (249 commits)
  KVM: Move apic timer migration away from critical section
  KVM: Put kvm_para.h include outside __KERNEL__
  KVM: Fix unbounded preemption latency
  KVM: Initialize the mmu caches only after verifying cpu support
  KVM: MMU: Fix dirty page setting for pages removed from rmap
  KVM: Portability: Move kvm_fpu to asm-x86/kvm.h
  KVM: x86 emulator: Only allow VMCALL/VMMCALL trapped by #UD
  KVM: MMU: Merge shadow level check in FNAME(fetch)
  KVM: MMU: Move kvm_free_some_pages() into critical section
  KVM: MMU: Switch to mmu spinlock
  KVM: MMU: Avoid calling gfn_to_page() in mmu_set_spte()
  KVM: Add kvm_read_guest_atomic()
  KVM: MMU: Concurrent guest walkers
  KVM: Disable vapic support on Intel machines with FlexPriority
  KVM: Accelerated apic support
  KVM: local APIC TPR access reporting facility
  KVM: Print data for unimplemented wrmsr
  KVM: MMU: Add cache miss statistic
  KVM: MMU: Coalesce remote tlb flushes
  KVM: Expose ioapic to ia64 save/restore APIs
  ...

5 files changed, 424 insertions, 216 deletions

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 27b9350052b..85b2482cc73 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -100,7 +100,6 @@ header-y += iso_fs.h
 header-y += ixjuser.h
 header-y += jffs2.h
 header-y += keyctl.h
-header-y += kvm.h
 header-y += limits.h
 header-y += lock_dlm_plock.h
 header-y += magic.h
@@ -256,6 +255,7 @@ unifdef-y += kd.h
 unifdef-y += kernelcapi.h
 unifdef-y += kernel.h
 unifdef-y += keyboard.h
+unifdef-$(CONFIG_HAVE_KVM) += kvm.h
 unifdef-y += llc.h
 unifdef-y += loop.h
 unifdef-y += lp.h
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 057a7f34ee3..4de4fd2d860 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -9,12 +9,10 @@
 
 #include <asm/types.h>
 #include <linux/ioctl.h>
+#include <asm/kvm.h>
 
 #define KVM_API_VERSION 12
 
-/* Architectural interrupt line count. */
-#define KVM_NR_INTERRUPTS 256
-
 /* for KVM_CREATE_MEMORY_REGION */
 struct kvm_memory_region {
 	__u32 slot;
@@ -23,17 +21,19 @@ struct kvm_memory_region {
 	__u64 memory_size; /* bytes */
 };
 
-/* for kvm_memory_region::flags */
-#define KVM_MEM_LOG_DIRTY_PAGES  1UL
-
-struct kvm_memory_alias {
-	__u32 slot;  /* this has a different namespace than memory slots */
+/* for KVM_SET_USER_MEMORY_REGION */
+struct kvm_userspace_memory_region {
+	__u32 slot;
 	__u32 flags;
 	__u64 guest_phys_addr;
-	__u64 memory_size;
-	__u64 target_phys_addr;
+	__u64 memory_size; /* bytes */
+	__u64 userspace_addr; /* start of the userspace allocated memory */
 };
 
+/* for kvm_memory_region::flags */
+#define KVM_MEM_LOG_DIRTY_PAGES  1UL
+
+
 /* for KVM_IRQ_LINE */
 struct kvm_irq_level {
 	/*
@@ -45,62 +45,18 @@ struct kvm_irq_level {
 	__u32 level;
 };
 
-/* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
-struct kvm_pic_state {
-	__u8 last_irr;	/* edge detection */
-	__u8 irr;		/* interrupt request register */
-	__u8 imr;		/* interrupt mask register */
-	__u8 isr;		/* interrupt service register */
-	__u8 priority_add;	/* highest irq priority */
-	__u8 irq_base;
-	__u8 read_reg_select;
-	__u8 poll;
-	__u8 special_mask;
-	__u8 init_state;
-	__u8 auto_eoi;
-	__u8 rotate_on_auto_eoi;
-	__u8 special_fully_nested_mode;
-	__u8 init4;		/* true if 4 byte init */
-	__u8 elcr;		/* PIIX edge/trigger selection */
-	__u8 elcr_mask;
-};
-
-#define KVM_IOAPIC_NUM_PINS  24
-struct kvm_ioapic_state {
-	__u64 base_address;
-	__u32 ioregsel;
-	__u32 id;
-	__u32 irr;
-	__u32 pad;
-	union {
-		__u64 bits;
-		struct {
-			__u8 vector;
-			__u8 delivery_mode:3;
-			__u8 dest_mode:1;
-			__u8 delivery_status:1;
-			__u8 polarity:1;
-			__u8 remote_irr:1;
-			__u8 trig_mode:1;
-			__u8 mask:1;
-			__u8 reserve:7;
-			__u8 reserved[4];
-			__u8 dest_id;
-		} fields;
-	} redirtbl[KVM_IOAPIC_NUM_PINS];
-};
-
-#define KVM_IRQCHIP_PIC_MASTER   0
-#define KVM_IRQCHIP_PIC_SLAVE    1
-#define KVM_IRQCHIP_IOAPIC       2
 
 struct kvm_irqchip {
 	__u32 chip_id;
 	__u32 pad;
         union {
 		char dummy[512];  /* reserving space */
+#ifdef CONFIG_X86
 		struct kvm_pic_state pic;
+#endif
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
 		struct kvm_ioapic_state ioapic;
+#endif
 	} chip;
 };
 
@@ -116,6 +72,7 @@ struct kvm_irqchip {
 #define KVM_EXIT_FAIL_ENTRY       9
 #define KVM_EXIT_INTR             10
 #define KVM_EXIT_SET_TPR          11
+#define KVM_EXIT_TPR_ACCESS       12
 
 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
 struct kvm_run {
@@ -174,90 +131,17 @@ struct kvm_run {
 			__u32 longmode;
 			__u32 pad;
 		} hypercall;
+		/* KVM_EXIT_TPR_ACCESS */
+		struct {
+			__u64 rip;
+			__u32 is_write;
+			__u32 pad;
+		} tpr_access;
 		/* Fix the size of the union. */
 		char padding[256];
 	};
 };
 
-/* for KVM_GET_REGS and KVM_SET_REGS */
-struct kvm_regs {
-	/* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
-	__u64 rax, rbx, rcx, rdx;
-	__u64 rsi, rdi, rsp, rbp;
-	__u64 r8,  r9,  r10, r11;
-	__u64 r12, r13, r14, r15;
-	__u64 rip, rflags;
-};
-
-/* for KVM_GET_FPU and KVM_SET_FPU */
-struct kvm_fpu {
-	__u8  fpr[8][16];
-	__u16 fcw;
-	__u16 fsw;
-	__u8  ftwx;  /* in fxsave format */
-	__u8  pad1;
-	__u16 last_opcode;
-	__u64 last_ip;
-	__u64 last_dp;
-	__u8  xmm[16][16];
-	__u32 mxcsr;
-	__u32 pad2;
-};
-
-/* for KVM_GET_LAPIC and KVM_SET_LAPIC */
-#define KVM_APIC_REG_SIZE 0x400
-struct kvm_lapic_state {
-	char regs[KVM_APIC_REG_SIZE];
-};
-
-struct kvm_segment {
-	__u64 base;
-	__u32 limit;
-	__u16 selector;
-	__u8  type;
-	__u8  present, dpl, db, s, l, g, avl;
-	__u8  unusable;
-	__u8  padding;
-};
-
-struct kvm_dtable {
-	__u64 base;
-	__u16 limit;
-	__u16 padding[3];
-};
-
-/* for KVM_GET_SREGS and KVM_SET_SREGS */
-struct kvm_sregs {
-	/* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
-	struct kvm_segment cs, ds, es, fs, gs, ss;
-	struct kvm_segment tr, ldt;
-	struct kvm_dtable gdt, idt;
-	__u64 cr0, cr2, cr3, cr4, cr8;
-	__u64 efer;
-	__u64 apic_base;
-	__u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
-};
-
-struct kvm_msr_entry {
-	__u32 index;
-	__u32 reserved;
-	__u64 data;
-};
-
-/* for KVM_GET_MSRS and KVM_SET_MSRS */
-struct kvm_msrs {
-	__u32 nmsrs; /* number of msrs in entries */
-	__u32 pad;
-
-	struct kvm_msr_entry entries[0];
-};
-
-/* for KVM_GET_MSR_INDEX_LIST */
-struct kvm_msr_list {
-	__u32 nmsrs; /* number of msrs in entries */
-	__u32 indices[0];
-};
-
 /* for KVM_TRANSLATE */
 struct kvm_translation {
 	/* in */
@@ -302,28 +186,24 @@ struct kvm_dirty_log {
 	};
 };
 
-struct kvm_cpuid_entry {
-	__u32 function;
-	__u32 eax;
-	__u32 ebx;
-	__u32 ecx;
-	__u32 edx;
-	__u32 padding;
-};
-
-/* for KVM_SET_CPUID */
-struct kvm_cpuid {
-	__u32 nent;
-	__u32 padding;
-	struct kvm_cpuid_entry entries[0];
-};
-
 /* for KVM_SET_SIGNAL_MASK */
 struct kvm_signal_mask {
 	__u32 len;
 	__u8  sigset[0];
 };
 
+/* for KVM_TPR_ACCESS_REPORTING */
+struct kvm_tpr_access_ctl {
+	__u32 enabled;
+	__u32 flags;
+	__u32 reserved[8];
+};
+
+/* for KVM_SET_VAPIC_ADDR */
+struct kvm_vapic_addr {
+	__u64 vapic_addr;
+};
+
 #define KVMIO 0xAE
 
 /*
@@ -347,11 +227,21 @@ struct kvm_signal_mask {
  */
 #define KVM_CAP_IRQCHIP	  0
 #define KVM_CAP_HLT	  1
+#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
+#define KVM_CAP_USER_MEMORY 3
+#define KVM_CAP_SET_TSS_ADDR 4
+#define KVM_CAP_EXT_CPUID 5
+#define KVM_CAP_VAPIC 6
 
 /*
  * ioctls for VM fds
  */
 #define KVM_SET_MEMORY_REGION     _IOW(KVMIO, 0x40, struct kvm_memory_region)
+#define KVM_SET_NR_MMU_PAGES      _IO(KVMIO, 0x44)
+#define KVM_GET_NR_MMU_PAGES      _IO(KVMIO, 0x45)
+#define KVM_SET_USER_MEMORY_REGION _IOW(KVMIO, 0x46,\
+					struct kvm_userspace_memory_region)
+#define KVM_SET_TSS_ADDR          _IO(KVMIO, 0x47)
 /*
  * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
  * a vcpu fd.
@@ -359,6 +249,7 @@ struct kvm_signal_mask {
 #define KVM_CREATE_VCPU           _IO(KVMIO,  0x41)
 #define KVM_GET_DIRTY_LOG         _IOW(KVMIO, 0x42, struct kvm_dirty_log)
 #define KVM_SET_MEMORY_ALIAS      _IOW(KVMIO, 0x43, struct kvm_memory_alias)
+#define KVM_GET_SUPPORTED_CPUID   _IOWR(KVMIO, 0x48, struct kvm_cpuid2)
 /* Device model IOC */
 #define KVM_CREATE_IRQCHIP	  _IO(KVMIO,  0x60)
 #define KVM_IRQ_LINE		  _IOW(KVMIO, 0x61, struct kvm_irq_level)
@@ -384,5 +275,11 @@ struct kvm_signal_mask {
 #define KVM_SET_FPU               _IOW(KVMIO,  0x8d, struct kvm_fpu)
 #define KVM_GET_LAPIC             _IOR(KVMIO,  0x8e, struct kvm_lapic_state)
 #define KVM_SET_LAPIC             _IOW(KVMIO,  0x8f, struct kvm_lapic_state)
+#define KVM_SET_CPUID2            _IOW(KVMIO,  0x90, struct kvm_cpuid2)
+#define KVM_GET_CPUID2            _IOWR(KVMIO, 0x91, struct kvm_cpuid2)
+/* Available with KVM_CAP_VAPIC */
+#define KVM_TPR_ACCESS_REPORTING  _IOWR(KVMIO,  0x92, struct kvm_tpr_access_ctl)
+/* Available with KVM_CAP_VAPIC */
+#define KVM_SET_VAPIC_ADDR        _IOW(KVMIO,  0x93, struct kvm_vapic_addr)
 
 #endif
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
new file mode 100644
index 00000000000..ea4764b0a2f
--- /dev/null
+++ b/include/linux/kvm_host.h
@@ -0,0 +1,299 @@
+#ifndef __KVM_HOST_H
+#define __KVM_HOST_H
+
+/*
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ */
+
+#include <linux/types.h>
+#include <linux/hardirq.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/preempt.h>
+#include <asm/signal.h>
+
+#include <linux/kvm.h>
+#include <linux/kvm_para.h>
+
+#include <linux/kvm_types.h>
+
+#include <asm/kvm_host.h>
+
+#define KVM_MAX_VCPUS 4
+#define KVM_MEMORY_SLOTS 8
+/* memory slots that does not exposed to userspace */
+#define KVM_PRIVATE_MEM_SLOTS 4
+
+#define KVM_PIO_PAGE_OFFSET 1
+
+/*
+ * vcpu->requests bit members
+ */
+#define KVM_REQ_TLB_FLUSH          0
+#define KVM_REQ_MIGRATE_TIMER      1
+#define KVM_REQ_REPORT_TPR_ACCESS  2
+
+struct kvm_vcpu;
+extern struct kmem_cache *kvm_vcpu_cache;
+
+struct kvm_guest_debug {
+	int enabled;
+	unsigned long bp[4];
+	int singlestep;
+};
+
+/*
+ * It would be nice to use something smarter than a linear search, TBD...
+ * Thankfully we dont expect many devices to register (famous last words :),
+ * so until then it will suffice.  At least its abstracted so we can change
+ * in one place.
+ */
+struct kvm_io_bus {
+	int                   dev_count;
+#define NR_IOBUS_DEVS 6
+	struct kvm_io_device *devs[NR_IOBUS_DEVS];
+};
+
+void kvm_io_bus_init(struct kvm_io_bus *bus);
+void kvm_io_bus_destroy(struct kvm_io_bus *bus);
+struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
+void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
+			     struct kvm_io_device *dev);
+
+struct kvm_vcpu {
+	struct kvm *kvm;
+	struct preempt_notifier preempt_notifier;
+	int vcpu_id;
+	struct mutex mutex;
+	int   cpu;
+	struct kvm_run *run;
+	int guest_mode;
+	unsigned long requests;
+	struct kvm_guest_debug guest_debug;
+	int fpu_active;
+	int guest_fpu_loaded;
+	wait_queue_head_t wq;
+	int sigset_active;
+	sigset_t sigset;
+	struct kvm_vcpu_stat stat;
+
+#ifdef CONFIG_HAS_IOMEM
+	int mmio_needed;
+	int mmio_read_completed;
+	int mmio_is_write;
+	int mmio_size;
+	unsigned char mmio_data[8];
+	gpa_t mmio_phys_addr;
+#endif
+
+	struct kvm_vcpu_arch arch;
+};
+
+struct kvm_memory_slot {
+	gfn_t base_gfn;
+	unsigned long npages;
+	unsigned long flags;
+	unsigned long *rmap;
+	unsigned long *dirty_bitmap;
+	unsigned long userspace_addr;
+	int user_alloc;
+};
+
+struct kvm {
+	struct mutex lock; /* protects the vcpus array and APIC accesses */
+	spinlock_t mmu_lock;
+	struct mm_struct *mm; /* userspace tied to this vm */
+	int nmemslots;
+	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
+					KVM_PRIVATE_MEM_SLOTS];
+	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
+	struct list_head vm_list;
+	struct file *filp;
+	struct kvm_io_bus mmio_bus;
+	struct kvm_io_bus pio_bus;
+	struct kvm_vm_stat stat;
+	struct kvm_arch arch;
+};
+
+/* The guest did something we don't support. */
+#define pr_unimpl(vcpu, fmt, ...)					\
+ do {									\
+	if (printk_ratelimit())						\
+		printk(KERN_ERR "kvm: %i: cpu%i " fmt,			\
+		       current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
+ } while (0)
+
+#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
+#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
+
+int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
+void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
+
+void vcpu_load(struct kvm_vcpu *vcpu);
+void vcpu_put(struct kvm_vcpu *vcpu);
+
+void decache_vcpus_on_cpu(int cpu);
+
+
+int kvm_init(void *opaque, unsigned int vcpu_size,
+		  struct module *module);
+void kvm_exit(void);
+
+#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
+#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
+static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
+struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
+
+extern struct page *bad_page;
+
+int is_error_page(struct page *page);
+int kvm_is_error_hva(unsigned long addr);
+int kvm_set_memory_region(struct kvm *kvm,
+			  struct kvm_userspace_memory_region *mem,
+			  int user_alloc);
+int __kvm_set_memory_region(struct kvm *kvm,
+			    struct kvm_userspace_memory_region *mem,
+			    int user_alloc);
+int kvm_arch_set_memory_region(struct kvm *kvm,
+				struct kvm_userspace_memory_region *mem,
+				struct kvm_memory_slot old,
+				int user_alloc);
+gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
+struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
+void kvm_release_page_clean(struct page *page);
+void kvm_release_page_dirty(struct page *page);
+int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
+			int len);
+int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
+			  unsigned long len);
+int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
+int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
+			 int offset, int len);
+int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
+		    unsigned long len);
+int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
+int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
+struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
+int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
+void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
+
+void kvm_vcpu_block(struct kvm_vcpu *vcpu);
+void kvm_resched(struct kvm_vcpu *vcpu);
+void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
+void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
+void kvm_flush_remote_tlbs(struct kvm *kvm);
+
+long kvm_arch_dev_ioctl(struct file *filp,
+			unsigned int ioctl, unsigned long arg);
+long kvm_arch_vcpu_ioctl(struct file *filp,
+			 unsigned int ioctl, unsigned long arg);
+void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
+void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
+
+int kvm_dev_ioctl_check_extension(long ext);
+
+int kvm_get_dirty_log(struct kvm *kvm,
+			struct kvm_dirty_log *log, int *is_dirty);
+int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
+				struct kvm_dirty_log *log);
+
+int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
+				   struct
+				   kvm_userspace_memory_region *mem,
+				   int user_alloc);
+long kvm_arch_vm_ioctl(struct file *filp,
+		       unsigned int ioctl, unsigned long arg);
+void kvm_arch_destroy_vm(struct kvm *kvm);
+
+int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
+int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
+
+int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
+				    struct kvm_translation *tr);
+
+int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
+int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
+int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
+				  struct kvm_sregs *sregs);
+int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
+				  struct kvm_sregs *sregs);
+int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
+				    struct kvm_debug_guest *dbg);
+int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
+
+int kvm_arch_init(void *opaque);
+void kvm_arch_exit(void);
+
+int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
+void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
+
+void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
+void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
+void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
+struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
+int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
+void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
+
+int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
+void kvm_arch_hardware_enable(void *garbage);
+void kvm_arch_hardware_disable(void *garbage);
+int kvm_arch_hardware_setup(void);
+void kvm_arch_hardware_unsetup(void);
+void kvm_arch_check_processor_compat(void *rtn);
+int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
+
+void kvm_free_physmem(struct kvm *kvm);
+
+struct  kvm *kvm_arch_create_vm(void);
+void kvm_arch_destroy_vm(struct kvm *kvm);
+
+int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
+int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
+void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
+
+static inline void kvm_guest_enter(void)
+{
+	account_system_vtime(current);
+	current->flags |= PF_VCPU;
+}
+
+static inline void kvm_guest_exit(void)
+{
+	account_system_vtime(current);
+	current->flags &= ~PF_VCPU;
+}
+
+static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
+{
+	return slot - kvm->memslots;
+}
+
+static inline gpa_t gfn_to_gpa(gfn_t gfn)
+{
+	return (gpa_t)gfn << PAGE_SHIFT;
+}
+
+static inline void kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
+{
+	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
+}
+
+enum kvm_stat_kind {
+	KVM_STAT_VM,
+	KVM_STAT_VCPU,
+};
+
+struct kvm_stats_debugfs_item {
+	const char *name;
+	int offset;
+	enum kvm_stat_kind kind;
+	struct dentry *dentry;
+};
+extern struct kvm_stats_debugfs_item debugfs_entries[];
+
+#endif
diff --git a/include/linux/kvm_para.h b/include/linux/kvm_para.h
index 3b292565a69..5497aac0d2f 100644
--- a/include/linux/kvm_para.h
+++ b/include/linux/kvm_para.h
@@ -2,72 +2,30 @@
 #define __LINUX_KVM_PARA_H
 
 /*
- * Guest OS interface for KVM paravirtualization
- *
- * Note: this interface is totally experimental, and is certain to change
- *       as we make progress.
+ * This header file provides a method for making a hypercall to the host
+ * Architectures should define:
+ * - kvm_hypercall0, kvm_hypercall1...
+ * - kvm_arch_para_features
+ * - kvm_para_available
  */
 
-/*
- * Per-VCPU descriptor area shared between guest and host. Writable to
- * both guest and host. Registered with the host by the guest when
- * a guest acknowledges paravirtual mode.
- *
- * NOTE: all addresses are guest-physical addresses (gpa), to make it
- * easier for the hypervisor to map between the various addresses.
- */
-struct kvm_vcpu_para_state {
-	/*
-	 * API version information for compatibility. If there's any support
-	 * mismatch (too old host trying to execute too new guest) then
-	 * the host will deny entry into paravirtual mode. Any other
-	 * combination (new host + old guest and new host + new guest)
-	 * is supposed to work - new host versions will support all old
-	 * guest API versions.
-	 */
-	u32 guest_version;
-	u32 host_version;
-	u32 size;
-	u32 ret;
-
-	/*
-	 * The address of the vm exit instruction (VMCALL or VMMCALL),
-	 * which the host will patch according to the CPU model the
-	 * VM runs on:
-	 */
-	u64 hypercall_gpa;
-
-} __attribute__ ((aligned(PAGE_SIZE)));
-
-#define KVM_PARA_API_VERSION 1
-
-/*
- * This is used for an RDMSR's ECX parameter to probe for a KVM host.
- * Hopefully no CPU vendor will use up this number. This is placed well
- * out of way of the typical space occupied by CPU vendors' MSR indices,
- * and we think (or at least hope) it wont be occupied in the future
- * either.
- */
-#define MSR_KVM_API_MAGIC 0x87655678
+/* Return values for hypercalls */
+#define KVM_ENOSYS		1000
 
-#define KVM_EINVAL 1
+#define KVM_HC_VAPIC_POLL_IRQ            1
 
 /*
- * Hypercall calling convention:
- *
- * Each hypercall may have 0-6 parameters.
- *
- * 64-bit hypercall index is in RAX, goes from 0 to __NR_hypercalls-1
- *
- * 64-bit parameters 1-6 are in the standard gcc x86_64 calling convention
- * order: RDI, RSI, RDX, RCX, R8, R9.
- *
- * 32-bit index is EBX, parameters are: EAX, ECX, EDX, ESI, EDI, EBP.
- * (the first 3 are according to the gcc regparm calling convention)
- *
- * No registers are clobbered by the hypercall, except that the
- * return value is in RAX.
+ * hypercalls use architecture specific
  */
-#define __NR_hypercalls			0
+#include <asm/kvm_para.h>
+
+#ifdef __KERNEL__
+static inline int kvm_para_has_feature(unsigned int feature)
+{
+	if (kvm_arch_para_features() & (1UL << feature))
+		return 1;
+	return 0;
+}
+#endif /* __KERNEL__ */
+#endif /* __LINUX_KVM_PARA_H */
 
-#endif
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
new file mode 100644
index 00000000000..1c4e46decb2
--- /dev/null
+++ b/include/linux/kvm_types.h
@@ -0,0 +1,54 @@
+/*
+ * 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_TYPES_H__
+#define __KVM_TYPES_H__
+
+#include <asm/types.h>
+
+/*
+ * Address types:
+ *
+ *  gva - guest virtual address
+ *  gpa - guest physical address
+ *  gfn - guest frame number
+ *  hva - host virtual address
+ *  hpa - host physical address
+ *  hfn - host frame number
+ */
+
+typedef unsigned long  gva_t;
+typedef u64            gpa_t;
+typedef unsigned long  gfn_t;
+
+typedef unsigned long  hva_t;
+typedef u64            hpa_t;
+typedef unsigned long  hfn_t;
+
+struct kvm_pio_request {
+	unsigned long count;
+	int cur_count;
+	struct page *guest_pages[2];
+	unsigned guest_page_offset;
+	int in;
+	int port;
+	int size;
+	int string;
+	int down;
+	int rep;
+};
+
+#endif /* __KVM_TYPES_H__ */