[linux-2.6-block.git] / arch / x86 / kernel / paravirt.c

/*  Paravirtualization interfaces
    Copyright (C) 2006 Rusty Russell IBM Corporation

    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, or
    (at your option) any later version.

    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, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    2007 - x86_64 support added by Glauber de Oliveira Costa, Red Hat Inc
*/

#include <linux/errno.h>
#include <linux/module.h>
#include <linux/efi.h>
#include <linux/bcd.h>
#include <linux/highmem.h>

#include <asm/bug.h>
#include <asm/paravirt.h>
#include <asm/desc.h>
#include <asm/setup.h>
#include <asm/arch_hooks.h>
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/delay.h>
#include <asm/fixmap.h>
#include <asm/apic.h>
#include <asm/tlbflush.h>
#include <asm/timer.h>

/* nop stub */
void _paravirt_nop(void)
{
}

static void __init default_banner(void)
{
	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
	       pv_info.name);
}

char *memory_setup(void)
{
	return pv_init_ops.memory_setup();
}

/* Simple instruction patching code. */
#define DEF_NATIVE(ops, name, code)					\
	extern const char start_##ops##_##name[], end_##ops##_##name[];	\
	asm("start_" #ops "_" #name ": " code "; end_" #ops "_" #name ":")

/* Undefined instruction for dealing with missing ops pointers. */
static const unsigned char ud2a[] = { 0x0f, 0x0b };

unsigned paravirt_patch_nop(void)
{
	return 0;
}

unsigned paravirt_patch_ignore(unsigned len)
{
	return len;
}

struct branch {
	unsigned char opcode;
	u32 delta;
} __attribute__((packed));

unsigned paravirt_patch_call(void *insnbuf,
			     const void *target, u16 tgt_clobbers,
			     unsigned long addr, u16 site_clobbers,
			     unsigned len)
{
	struct branch *b = insnbuf;
	unsigned long delta = (unsigned long)target - (addr+5);

	if (tgt_clobbers & ~site_clobbers)
		return len;	/* target would clobber too much for this site */
	if (len < 5)
		return len;	/* call too long for patch site */

	b->opcode = 0xe8; /* call */
	b->delta = delta;
	BUILD_BUG_ON(sizeof(*b) != 5);

	return 5;
}

unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
			    unsigned long addr, unsigned len)
{
	struct branch *b = insnbuf;
	unsigned long delta = (unsigned long)target - (addr+5);

	if (len < 5)
		return len;	/* call too long for patch site */

	b->opcode = 0xe9;	/* jmp */
	b->delta = delta;

	return 5;
}

/* Neat trick to map patch type back to the call within the
 * corresponding structure. */
static void *get_call_destination(u8 type)
{
	struct paravirt_patch_template tmpl = {
		.pv_init_ops = pv_init_ops,
		.pv_time_ops = pv_time_ops,
		.pv_cpu_ops = pv_cpu_ops,
		.pv_irq_ops = pv_irq_ops,
		.pv_apic_ops = pv_apic_ops,
		.pv_mmu_ops = pv_mmu_ops,
	};
	return *((void **)&tmpl + type);
}

unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
				unsigned long addr, unsigned len)
{
	void *opfunc = get_call_destination(type);
	unsigned ret;

	if (opfunc == NULL)
		/* If there's no function, patch it with a ud2a (BUG) */
		ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
	else if (opfunc == paravirt_nop)
		/* If the operation is a nop, then nop the callsite */
		ret = paravirt_patch_nop();
	else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
		 type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_syscall_ret))
		/* If operation requires a jmp, then jmp */
		ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
	else
		/* Otherwise call the function; assume target could
		   clobber any caller-save reg */
		ret = paravirt_patch_call(insnbuf, opfunc, CLBR_ANY,
					  addr, clobbers, len);

	return ret;
}

unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
			      const char *start, const char *end)
{
	unsigned insn_len = end - start;

	if (insn_len > len || start == NULL)
		insn_len = len;
	else
		memcpy(insnbuf, start, insn_len);

	return insn_len;
}

void init_IRQ(void)
{
	pv_irq_ops.init_IRQ();
}

static void native_flush_tlb(void)
{
	__native_flush_tlb();
}

/*
 * Global pages have to be flushed a bit differently. Not a real
 * performance problem because this does not happen often.
 */
static void native_flush_tlb_global(void)
{
	__native_flush_tlb_global();
}

static void native_flush_tlb_single(unsigned long addr)
{
	__native_flush_tlb_single(addr);
}

/* These are in entry.S */
extern void native_iret(void);
extern void native_irq_enable_syscall_ret(void);

static int __init print_banner(void)
{
	pv_init_ops.banner();
	return 0;
}
core_initcall(print_banner);

static struct resource reserve_ioports = {
	.start = 0,
	.end = IO_SPACE_LIMIT,
	.name = "paravirt-ioport",
	.flags = IORESOURCE_IO | IORESOURCE_BUSY,
};

static struct resource reserve_iomem = {
	.start = 0,
	.end = -1,
	.name = "paravirt-iomem",
	.flags = IORESOURCE_MEM | IORESOURCE_BUSY,
};

/*
 * Reserve the whole legacy IO space to prevent any legacy drivers
 * from wasting time probing for their hardware.  This is a fairly
 * brute-force approach to disabling all non-virtual drivers.
 *
 * Note that this must be called very early to have any effect.
 */
int paravirt_disable_iospace(void)
{
	int ret;

	ret = request_resource(&ioport_resource, &reserve_ioports);
	if (ret == 0) {
		ret = request_resource(&iomem_resource, &reserve_iomem);
		if (ret)
			release_resource(&reserve_ioports);
	}

	return ret;
}

static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;

static inline void enter_lazy(enum paravirt_lazy_mode mode)
{
	BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
	BUG_ON(preemptible());

	x86_write_percpu(paravirt_lazy_mode, mode);
}

void paravirt_leave_lazy(enum paravirt_lazy_mode mode)
{
	BUG_ON(x86_read_percpu(paravirt_lazy_mode) != mode);
	BUG_ON(preemptible());

	x86_write_percpu(paravirt_lazy_mode, PARAVIRT_LAZY_NONE);
}

void paravirt_enter_lazy_mmu(void)
{
	enter_lazy(PARAVIRT_LAZY_MMU);
}

void paravirt_leave_lazy_mmu(void)
{
	paravirt_leave_lazy(PARAVIRT_LAZY_MMU);
}

void paravirt_enter_lazy_cpu(void)
{
	enter_lazy(PARAVIRT_LAZY_CPU);
}

void paravirt_leave_lazy_cpu(void)
{
	paravirt_leave_lazy(PARAVIRT_LAZY_CPU);
}

enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
{
	return x86_read_percpu(paravirt_lazy_mode);
}

struct pv_info pv_info = {
	.name = "bare hardware",
	.paravirt_enabled = 0,
	.kernel_rpl = 0,
	.shared_kernel_pmd = 1,	/* Only used when CONFIG_X86_PAE is set */
};

struct pv_init_ops pv_init_ops = {
	.patch = native_patch,
	.banner = default_banner,
	.arch_setup = paravirt_nop,
	.memory_setup = machine_specific_memory_setup,
};

struct pv_time_ops pv_time_ops = {
	.time_init = hpet_time_init,
	.get_wallclock = native_get_wallclock,
	.set_wallclock = native_set_wallclock,
	.sched_clock = native_sched_clock,
	.get_cpu_khz = native_calculate_cpu_khz,
};

struct pv_irq_ops pv_irq_ops = {
	.init_IRQ = native_init_IRQ,
	.save_fl = native_save_fl,
	.restore_fl = native_restore_fl,
	.irq_disable = native_irq_disable,
	.irq_enable = native_irq_enable,
	.safe_halt = native_safe_halt,
	.halt = native_halt,
};

struct pv_cpu_ops pv_cpu_ops = {
	.cpuid = native_cpuid,
	.get_debugreg = native_get_debugreg,
	.set_debugreg = native_set_debugreg,
	.clts = native_clts,
	.read_cr0 = native_read_cr0,
	.write_cr0 = native_write_cr0,
	.read_cr4 = native_read_cr4,
	.read_cr4_safe = native_read_cr4_safe,
	.write_cr4 = native_write_cr4,
	.wbinvd = native_wbinvd,
	.read_msr = native_read_msr_safe,
	.write_msr = native_write_msr_safe,
	.read_tsc = native_read_tsc,
	.read_pmc = native_read_pmc,
	.read_tscp = native_read_tscp,
	.load_tr_desc = native_load_tr_desc,
	.set_ldt = native_set_ldt,
	.load_gdt = native_load_gdt,
	.load_idt = native_load_idt,
	.store_gdt = native_store_gdt,
	.store_idt = native_store_idt,
	.store_tr = native_store_tr,
	.load_tls = native_load_tls,
	.write_ldt_entry = native_write_ldt_entry,
	.write_gdt_entry = native_write_gdt_entry,
	.write_idt_entry = native_write_idt_entry,
	.load_sp0 = native_load_sp0,

	.irq_enable_syscall_ret = native_irq_enable_syscall_ret,
	.iret = native_iret,
	.swapgs = native_swapgs,

	.set_iopl_mask = native_set_iopl_mask,
	.io_delay = native_io_delay,

	.lazy_mode = {
		.enter = paravirt_nop,
		.leave = paravirt_nop,
	},
};

struct pv_apic_ops pv_apic_ops = {
#ifdef CONFIG_X86_LOCAL_APIC
	.apic_write = native_apic_write,
	.apic_write_atomic = native_apic_write_atomic,
	.apic_read = native_apic_read,
	.setup_boot_clock = setup_boot_APIC_clock,
	.setup_secondary_clock = setup_secondary_APIC_clock,
	.startup_ipi_hook = paravirt_nop,
#endif
};

struct pv_mmu_ops pv_mmu_ops = {
	.pagetable_setup_start = native_pagetable_setup_start,
	.pagetable_setup_done = native_pagetable_setup_done,

	.read_cr2 = native_read_cr2,
	.write_cr2 = native_write_cr2,
	.read_cr3 = native_read_cr3,
	.write_cr3 = native_write_cr3,

	.flush_tlb_user = native_flush_tlb,
	.flush_tlb_kernel = native_flush_tlb_global,
	.flush_tlb_single = native_flush_tlb_single,
	.flush_tlb_others = native_flush_tlb_others,

	.alloc_pt = paravirt_nop,
	.alloc_pd = paravirt_nop,
	.alloc_pd_clone = paravirt_nop,
	.release_pt = paravirt_nop,
	.release_pd = paravirt_nop,

	.set_pte = native_set_pte,
	.set_pte_at = native_set_pte_at,
	.set_pmd = native_set_pmd,
	.pte_update = paravirt_nop,
	.pte_update_defer = paravirt_nop,

#ifdef CONFIG_HIGHPTE
	.kmap_atomic_pte = kmap_atomic,
#endif

#ifdef CONFIG_X86_PAE
	.set_pte_atomic = native_set_pte_atomic,
	.set_pte_present = native_set_pte_present,
	.set_pud = native_set_pud,
	.pte_clear = native_pte_clear,
	.pmd_clear = native_pmd_clear,

	.pmd_val = native_pmd_val,
	.make_pmd = native_make_pmd,
#endif

	.pte_val = native_pte_val,
	.pgd_val = native_pgd_val,

	.make_pte = native_make_pte,
	.make_pgd = native_make_pgd,

	.dup_mmap = paravirt_nop,
	.exit_mmap = paravirt_nop,
	.activate_mm = paravirt_nop,

	.lazy_mode = {
		.enter = paravirt_nop,
		.leave = paravirt_nop,
	},
};

EXPORT_SYMBOL_GPL(pv_time_ops);
EXPORT_SYMBOL    (pv_cpu_ops);
EXPORT_SYMBOL    (pv_mmu_ops);
EXPORT_SYMBOL_GPL(pv_apic_ops);
EXPORT_SYMBOL_GPL(pv_info);
EXPORT_SYMBOL    (pv_irq_ops);
Commit	Line	Data
	1	/* Paravirtualization interfaces
	2	Copyright (C) 2006 Rusty Russell IBM Corporation
	3
	4	This program is free software; you can redistribute it and/or modify
	5	it under the terms of the GNU General Public License as published by
	6	the Free Software Foundation; either version 2 of the License, or
	7	(at your option) any later version.
	8
	9	This program is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	GNU General Public License for more details.
	13
	14	You should have received a copy of the GNU General Public License
	15	along with this program; if not, write to the Free Software
	16	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	17
	18	2007 - x86_64 support added by Glauber de Oliveira Costa, Red Hat Inc
	19	*/
	20
	21	#include <linux/errno.h>
	22	#include <linux/module.h>
	23	#include <linux/efi.h>
	24	#include <linux/bcd.h>
	25	#include <linux/highmem.h>
	26
	27	#include <asm/bug.h>
	28	#include <asm/paravirt.h>
	29	#include <asm/desc.h>
	30	#include <asm/setup.h>
	31	#include <asm/arch_hooks.h>
	32	#include <asm/time.h>
	33	#include <asm/irq.h>
	34	#include <asm/delay.h>
	35	#include <asm/fixmap.h>
	36	#include <asm/apic.h>
	37	#include <asm/tlbflush.h>
	38	#include <asm/timer.h>
	39
	40	/* nop stub */
	41	void _paravirt_nop(void)
	42	{
	43	}
	44
	45	static void __init default_banner(void)
	46	{
	47	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
	48	pv_info.name);
	49	}
	50
	51	char *memory_setup(void)
	52	{
	53	return pv_init_ops.memory_setup();
	54	}
	55
	56	/* Simple instruction patching code. */
	57	#define DEF_NATIVE(ops, name, code) \
	58	extern const char start_##ops##_##name[], end_##ops##_##name[]; \
	59	asm("start_" #ops "_" #name ": " code "; end_" #ops "_" #name ":")
	60
	61	/* Undefined instruction for dealing with missing ops pointers. */
	62	static const unsigned char ud2a[] = { 0x0f, 0x0b };
	63
	64	unsigned paravirt_patch_nop(void)
	65	{
	66	return 0;
	67	}
	68
	69	unsigned paravirt_patch_ignore(unsigned len)
	70	{
	71	return len;
	72	}
	73
	74	struct branch {
	75	unsigned char opcode;
	76	u32 delta;
	77	} __attribute__((packed));
	78
	79	unsigned paravirt_patch_call(void *insnbuf,
	80	const void *target, u16 tgt_clobbers,
	81	unsigned long addr, u16 site_clobbers,
	82	unsigned len)
	83	{
	84	struct branch *b = insnbuf;
	85	unsigned long delta = (unsigned long)target - (addr+5);
	86
	87	if (tgt_clobbers & ~site_clobbers)
	88	return len; /* target would clobber too much for this site */
	89	if (len < 5)
	90	return len; /* call too long for patch site */
	91
	92	b->opcode = 0xe8; /* call */
	93	b->delta = delta;
	94	BUILD_BUG_ON(sizeof(*b) != 5);
	95
	96	return 5;
	97	}
	98
	99	unsigned paravirt_patch_jmp(void insnbuf, const void target,
	100	unsigned long addr, unsigned len)
	101	{
	102	struct branch *b = insnbuf;
	103	unsigned long delta = (unsigned long)target - (addr+5);
	104
	105	if (len < 5)
	106	return len; /* call too long for patch site */
	107
	108	b->opcode = 0xe9; /* jmp */
	109	b->delta = delta;
	110
	111	return 5;
	112	}
	113
	114	/* Neat trick to map patch type back to the call within the
	115	* corresponding structure. */
	116	static void *get_call_destination(u8 type)
	117	{
	118	struct paravirt_patch_template tmpl = {
	119	.pv_init_ops = pv_init_ops,
	120	.pv_time_ops = pv_time_ops,
	121	.pv_cpu_ops = pv_cpu_ops,
	122	.pv_irq_ops = pv_irq_ops,
	123	.pv_apic_ops = pv_apic_ops,
	124	.pv_mmu_ops = pv_mmu_ops,
	125	};
	126	return ((void *)&tmpl + type);
	127	}
	128
	129	unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
	130	unsigned long addr, unsigned len)
	131	{
	132	void *opfunc = get_call_destination(type);
	133	unsigned ret;
	134
	135	if (opfunc == NULL)
	136	/* If there's no function, patch it with a ud2a (BUG) */
	137	ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
	138	else if (opfunc == paravirt_nop)
	139	/* If the operation is a nop, then nop the callsite */
	140	ret = paravirt_patch_nop();
	141	else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) \|\|
	142	type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_syscall_ret))
	143	/* If operation requires a jmp, then jmp */
	144	ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
	145	else
	146	/* Otherwise call the function; assume target could
	147	clobber any caller-save reg */
	148	ret = paravirt_patch_call(insnbuf, opfunc, CLBR_ANY,
	149	addr, clobbers, len);
	150
	151	return ret;
	152	}
	153
	154	unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
	155	const char start, const char end)
	156	{
	157	unsigned insn_len = end - start;
	158
	159	if (insn_len > len \|\| start == NULL)
	160	insn_len = len;
	161	else
	162	memcpy(insnbuf, start, insn_len);
	163
	164	return insn_len;
	165	}
	166
	167	void init_IRQ(void)
	168	{
	169	pv_irq_ops.init_IRQ();
	170	}
	171
	172	static void native_flush_tlb(void)
	173	{
	174	__native_flush_tlb();
	175	}
	176
	177	/*
	178	* Global pages have to be flushed a bit differently. Not a real
	179	* performance problem because this does not happen often.
	180	*/
	181	static void native_flush_tlb_global(void)
	182	{
	183	__native_flush_tlb_global();
	184	}
	185
	186	static void native_flush_tlb_single(unsigned long addr)
	187	{
	188	__native_flush_tlb_single(addr);
	189	}
	190
	191	/* These are in entry.S */
	192	extern void native_iret(void);
	193	extern void native_irq_enable_syscall_ret(void);
	194
	195	static int __init print_banner(void)
	196	{
	197	pv_init_ops.banner();
	198	return 0;
	199	}
	200	core_initcall(print_banner);
	201
	202	static struct resource reserve_ioports = {
	203	.start = 0,
	204	.end = IO_SPACE_LIMIT,
	205	.name = "paravirt-ioport",
	206	.flags = IORESOURCE_IO \| IORESOURCE_BUSY,
	207	};
	208
	209	static struct resource reserve_iomem = {
	210	.start = 0,
	211	.end = -1,
	212	.name = "paravirt-iomem",
	213	.flags = IORESOURCE_MEM \| IORESOURCE_BUSY,
	214	};
	215
	216	/*
	217	* Reserve the whole legacy IO space to prevent any legacy drivers
	218	* from wasting time probing for their hardware. This is a fairly
	219	* brute-force approach to disabling all non-virtual drivers.
	220	*
	221	* Note that this must be called very early to have any effect.
	222	*/
	223	int paravirt_disable_iospace(void)
	224	{
	225	int ret;
	226
	227	ret = request_resource(&ioport_resource, &reserve_ioports);
	228	if (ret == 0) {
	229	ret = request_resource(&iomem_resource, &reserve_iomem);
	230	if (ret)
	231	release_resource(&reserve_ioports);
	232	}
	233
	234	return ret;
	235	}
	236
	237	static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
	238
	239	static inline void enter_lazy(enum paravirt_lazy_mode mode)
	240	{
	241	BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
	242	BUG_ON(preemptible());
	243
	244	x86_write_percpu(paravirt_lazy_mode, mode);
	245	}
	246
	247	void paravirt_leave_lazy(enum paravirt_lazy_mode mode)
	248	{
	249	BUG_ON(x86_read_percpu(paravirt_lazy_mode) != mode);
	250	BUG_ON(preemptible());
	251
	252	x86_write_percpu(paravirt_lazy_mode, PARAVIRT_LAZY_NONE);
	253	}
	254
	255	void paravirt_enter_lazy_mmu(void)
	256	{
	257	enter_lazy(PARAVIRT_LAZY_MMU);
	258	}
	259
	260	void paravirt_leave_lazy_mmu(void)
	261	{
	262	paravirt_leave_lazy(PARAVIRT_LAZY_MMU);
	263	}
	264
	265	void paravirt_enter_lazy_cpu(void)
	266	{
	267	enter_lazy(PARAVIRT_LAZY_CPU);
	268	}
	269
	270	void paravirt_leave_lazy_cpu(void)
	271	{
	272	paravirt_leave_lazy(PARAVIRT_LAZY_CPU);
	273	}
	274
	275	enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
	276	{
	277	return x86_read_percpu(paravirt_lazy_mode);
	278	}
	279
	280	struct pv_info pv_info = {
	281	.name = "bare hardware",
	282	.paravirt_enabled = 0,
	283	.kernel_rpl = 0,
	284	.shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */
	285	};
	286
	287	struct pv_init_ops pv_init_ops = {
	288	.patch = native_patch,
	289	.banner = default_banner,
	290	.arch_setup = paravirt_nop,
	291	.memory_setup = machine_specific_memory_setup,
	292	};
	293
	294	struct pv_time_ops pv_time_ops = {
	295	.time_init = hpet_time_init,
	296	.get_wallclock = native_get_wallclock,
	297	.set_wallclock = native_set_wallclock,
	298	.sched_clock = native_sched_clock,
	299	.get_cpu_khz = native_calculate_cpu_khz,
	300	};
	301
	302	struct pv_irq_ops pv_irq_ops = {
	303	.init_IRQ = native_init_IRQ,
	304	.save_fl = native_save_fl,
	305	.restore_fl = native_restore_fl,
	306	.irq_disable = native_irq_disable,
	307	.irq_enable = native_irq_enable,
	308	.safe_halt = native_safe_halt,
	309	.halt = native_halt,
	310	};
	311
	312	struct pv_cpu_ops pv_cpu_ops = {
	313	.cpuid = native_cpuid,
	314	.get_debugreg = native_get_debugreg,
	315	.set_debugreg = native_set_debugreg,
	316	.clts = native_clts,
	317	.read_cr0 = native_read_cr0,
	318	.write_cr0 = native_write_cr0,
	319	.read_cr4 = native_read_cr4,
	320	.read_cr4_safe = native_read_cr4_safe,
	321	.write_cr4 = native_write_cr4,
	322	.wbinvd = native_wbinvd,
	323	.read_msr = native_read_msr_safe,
	324	.write_msr = native_write_msr_safe,
	325	.read_tsc = native_read_tsc,
	326	.read_pmc = native_read_pmc,
	327	.read_tscp = native_read_tscp,
	328	.load_tr_desc = native_load_tr_desc,
	329	.set_ldt = native_set_ldt,
	330	.load_gdt = native_load_gdt,
	331	.load_idt = native_load_idt,
	332	.store_gdt = native_store_gdt,
	333	.store_idt = native_store_idt,
	334	.store_tr = native_store_tr,
	335	.load_tls = native_load_tls,
	336	.write_ldt_entry = native_write_ldt_entry,
	337	.write_gdt_entry = native_write_gdt_entry,
	338	.write_idt_entry = native_write_idt_entry,
	339	.load_sp0 = native_load_sp0,
	340
	341	.irq_enable_syscall_ret = native_irq_enable_syscall_ret,
	342	.iret = native_iret,
	343	.swapgs = native_swapgs,
	344
	345	.set_iopl_mask = native_set_iopl_mask,
	346	.io_delay = native_io_delay,
	347
	348	.lazy_mode = {
	349	.enter = paravirt_nop,
	350	.leave = paravirt_nop,
	351	},
	352	};
	353
	354	struct pv_apic_ops pv_apic_ops = {
	355	#ifdef CONFIG_X86_LOCAL_APIC
	356	.apic_write = native_apic_write,
	357	.apic_write_atomic = native_apic_write_atomic,
	358	.apic_read = native_apic_read,
	359	.setup_boot_clock = setup_boot_APIC_clock,
	360	.setup_secondary_clock = setup_secondary_APIC_clock,
	361	.startup_ipi_hook = paravirt_nop,
	362	#endif
	363	};
	364
	365	struct pv_mmu_ops pv_mmu_ops = {
	366	.pagetable_setup_start = native_pagetable_setup_start,
	367	.pagetable_setup_done = native_pagetable_setup_done,
	368
	369	.read_cr2 = native_read_cr2,
	370	.write_cr2 = native_write_cr2,
	371	.read_cr3 = native_read_cr3,
	372	.write_cr3 = native_write_cr3,
	373
	374	.flush_tlb_user = native_flush_tlb,
	375	.flush_tlb_kernel = native_flush_tlb_global,
	376	.flush_tlb_single = native_flush_tlb_single,
	377	.flush_tlb_others = native_flush_tlb_others,
	378
	379	.alloc_pt = paravirt_nop,
	380	.alloc_pd = paravirt_nop,
	381	.alloc_pd_clone = paravirt_nop,
	382	.release_pt = paravirt_nop,
	383	.release_pd = paravirt_nop,
	384
	385	.set_pte = native_set_pte,
	386	.set_pte_at = native_set_pte_at,
	387	.set_pmd = native_set_pmd,
	388	.pte_update = paravirt_nop,
	389	.pte_update_defer = paravirt_nop,
	390
	391	#ifdef CONFIG_HIGHPTE
	392	.kmap_atomic_pte = kmap_atomic,
	393	#endif
	394
	395	#ifdef CONFIG_X86_PAE
	396	.set_pte_atomic = native_set_pte_atomic,
	397	.set_pte_present = native_set_pte_present,
	398	.set_pud = native_set_pud,
	399	.pte_clear = native_pte_clear,
	400	.pmd_clear = native_pmd_clear,
	401
	402	.pmd_val = native_pmd_val,
	403	.make_pmd = native_make_pmd,
	404	#endif
	405
	406	.pte_val = native_pte_val,
	407	.pgd_val = native_pgd_val,
	408
	409	.make_pte = native_make_pte,
	410	.make_pgd = native_make_pgd,
	411
	412	.dup_mmap = paravirt_nop,
	413	.exit_mmap = paravirt_nop,
	414	.activate_mm = paravirt_nop,
	415
	416	.lazy_mode = {
	417	.enter = paravirt_nop,
	418	.leave = paravirt_nop,
	419	},
	420	};
	421
	422	EXPORT_SYMBOL_GPL(pv_time_ops);
	423	EXPORT_SYMBOL (pv_cpu_ops);
	424	EXPORT_SYMBOL (pv_mmu_ops);
	425	EXPORT_SYMBOL_GPL(pv_apic_ops);
	426	EXPORT_SYMBOL_GPL(pv_info);
	427	EXPORT_SYMBOL (pv_irq_ops);