[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,
};

/*
 * 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)
{
	return request_resource(&ioport_resource, &reserve_ioports);
}

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(__get_cpu_var(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
	BUG_ON(preemptible());

	__get_cpu_var(paravirt_lazy_mode) = mode;
}

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

	__get_cpu_var(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 __get_cpu_var(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,
#ifdef CONFIG_X86_64
	.read_cr8 = native_read_cr8,
	.write_cr8 = native_write_cr8,
#endif
	.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 = {
#ifndef CONFIG_X86_64
	.pagetable_setup_start = native_pagetable_setup_start,
	.pagetable_setup_done = native_pagetable_setup_done,
#endif

	.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_pte = paravirt_nop,
	.alloc_pmd = paravirt_nop,
	.alloc_pmd_clone = paravirt_nop,
	.alloc_pud = paravirt_nop,
	.release_pte = paravirt_nop,
	.release_pmd = paravirt_nop,
	.release_pud = 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,

	.ptep_modify_prot_start = __ptep_modify_prot_start,
	.ptep_modify_prot_commit = __ptep_modify_prot_commit,

#ifdef CONFIG_HIGHPTE
	.kmap_atomic_pte = kmap_atomic,
#endif

#if PAGETABLE_LEVELS >= 3
#ifdef CONFIG_X86_PAE
	.set_pte_atomic = native_set_pte_atomic,
	.set_pte_present = native_set_pte_present,
	.pte_clear = native_pte_clear,
	.pmd_clear = native_pmd_clear,
#endif
	.set_pud = native_set_pud,
	.pmd_val = native_pmd_val,
	.make_pmd = native_make_pmd,

#if PAGETABLE_LEVELS == 4
	.pud_val = native_pud_val,
	.make_pud = native_make_pud,
	.set_pgd = native_set_pgd,
#endif
#endif /* PAGETABLE_LEVELS >= 3 */

	.pte_val = native_pte_val,
	.pte_flags = 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
d3561b7f RR	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
b1df07bd GOC	17
b1df07bd GOC	18	2007 - x86_64 support added by Glauber de Oliveira Costa, Red Hat Inc
d3561b7f	19	*/
b1df07bd	20
d3561b7f RR	21	#include <linux/errno.h>
	22	#include <linux/module.h>
	23	#include <linux/efi.h>
	24	#include <linux/bcd.h>
ce6234b5	25	#include <linux/highmem.h>
d3561b7f RR	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>
13623d79 RR	35	#include <asm/fixmap.h>
13623d79 RR	36	#include <asm/apic.h>
da181a8b	37	#include <asm/tlbflush.h>
6cb9a835	38	#include <asm/timer.h>
d3561b7f RR	39
d3561b7f RR	40	/* nop stub */
45876233	41	void _paravirt_nop(void)
d3561b7f RR	42	{
	43	}
	44
	45	static void __init default_banner(void)
	46	{
	47	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
93b1eab3	48	pv_info.name);
d3561b7f RR	49	}
	50
	51	char *memory_setup(void)
	52	{
93b1eab3	53	return pv_init_ops.memory_setup();
d3561b7f RR	54	}
d3561b7f RR	55
139ec7c4	56	/* Simple instruction patching code. */
93b1eab3 JF	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
93b1eab3 JF	61	/* Undefined instruction for dealing with missing ops pointers. */
93b1eab3 JF	62	static const unsigned char ud2a[] = { 0x0f, 0x0b };
139ec7c4	63
63f70270 JF	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
19d36ccd AK	74	struct branch {
	75	unsigned char opcode;
	76	u32 delta;
	77	} __attribute__((packed));
	78
ab144f5e AK	79	unsigned paravirt_patch_call(void *insnbuf,
	80	const void *target, u16 tgt_clobbers,
	81	unsigned long addr, u16 site_clobbers,
63f70270 JF	82	unsigned len)
63f70270 JF	83	{
ab144f5e AK	84	struct branch *b = insnbuf;
ab144f5e AK	85	unsigned long delta = (unsigned long)target - (addr+5);
63f70270 JF	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 */
139ec7c4	91
ab144f5e AK	92	b->opcode = 0xe8; /* call */
	93	b->delta = delta;
	94	BUILD_BUG_ON(sizeof(*b) != 5);
139ec7c4	95
63f70270 JF	96	return 5;
	97	}
	98
93b1eab3	99	unsigned paravirt_patch_jmp(void insnbuf, const void target,
ab144f5e	100	unsigned long addr, unsigned len)
63f70270	101	{
ab144f5e AK	102	struct branch *b = insnbuf;
ab144f5e AK	103	unsigned long delta = (unsigned long)target - (addr+5);
63f70270 JF	104
	105	if (len < 5)
	106	return len; /* call too long for patch site */
	107
ab144f5e AK	108	b->opcode = 0xe9; /* jmp */
ab144f5e AK	109	b->delta = delta;
63f70270 JF	110
	111	return 5;
	112	}
	113
93b1eab3 JF	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,
93b1eab3 JF	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
ab144f5e AK	129	unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
ab144f5e AK	130	unsigned long addr, unsigned len)
63f70270	131	{
93b1eab3	132	void *opfunc = get_call_destination(type);
63f70270 JF	133	unsigned ret;
	134
	135	if (opfunc == NULL)
	136	/* If there's no function, patch it with a ud2a (BUG) */
93b1eab3	137	ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
63f70270 JF	138	else if (opfunc == paravirt_nop)
	139	/* If the operation is a nop, then nop the callsite */
	140	ret = paravirt_patch_nop();
93b1eab3	141	else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) \|\|
6abcd98f	142	type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_syscall_ret))
63f70270	143	/* If operation requires a jmp, then jmp */
93b1eab3	144	ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
63f70270 JF	145	else
	146	/* Otherwise call the function; assume target could
	147	clobber any caller-save reg */
ab144f5e AK	148	ret = paravirt_patch_call(insnbuf, opfunc, CLBR_ANY,
ab144f5e AK	149	addr, clobbers, len);
63f70270 JF	150
	151	return ret;
	152	}
	153
ab144f5e	154	unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
63f70270 JF	155	const char start, const char end)
	156	{
	157	unsigned insn_len = end - start;
139ec7c4	158
63f70270 JF	159	if (insn_len > len \|\| start == NULL)
	160	insn_len = len;
	161	else
ab144f5e	162	memcpy(insnbuf, start, insn_len);
139ec7c4	163
139ec7c4 RR	164	return insn_len;
	165	}
	166
d3561b7f RR	167	void init_IRQ(void)
d3561b7f RR	168	{
93b1eab3	169	pv_irq_ops.init_IRQ();
d3561b7f RR	170	}
d3561b7f RR	171
1a1eecd1	172	static void native_flush_tlb(void)
da181a8b RR	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	*/
1a1eecd1	181	static void native_flush_tlb_global(void)
da181a8b RR	182	{
	183	__native_flush_tlb_global();
	184	}
	185
63f70270	186	static void native_flush_tlb_single(unsigned long addr)
da181a8b RR	187	{
	188	__native_flush_tlb_single(addr);
	189	}
	190
d3561b7f	191	/* These are in entry.S */
1a1eecd1	192	extern void native_iret(void);
6abcd98f	193	extern void native_irq_enable_syscall_ret(void);
d3561b7f RR	194
	195	static int __init print_banner(void)
	196	{
93b1eab3	197	pv_init_ops.banner();
d3561b7f RR	198	return 0;
	199	}
	200	core_initcall(print_banner);
	201
d572929c JF	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
d572929c JF	209	/*
	210	* Reserve the whole legacy IO space to prevent any legacy drivers
	211	* from wasting time probing for their hardware. This is a fairly
	212	* brute-force approach to disabling all non-virtual drivers.
	213	*
	214	* Note that this must be called very early to have any effect.
	215	*/
	216	int paravirt_disable_iospace(void)
	217	{
f7743fe6	218	return request_resource(&ioport_resource, &reserve_ioports);
d572929c JF	219	}
d572929c JF	220
8965c1c0 JF	221	static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
	222
	223	static inline void enter_lazy(enum paravirt_lazy_mode mode)
	224	{
bfd074e0	225	BUG_ON(__get_cpu_var(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
8965c1c0 JF	226	BUG_ON(preemptible());
8965c1c0 JF	227
bfd074e0	228	__get_cpu_var(paravirt_lazy_mode) = mode;
8965c1c0 JF	229	}
	230
	231	void paravirt_leave_lazy(enum paravirt_lazy_mode mode)
	232	{
bfd074e0	233	BUG_ON(__get_cpu_var(paravirt_lazy_mode) != mode);
8965c1c0 JF	234	BUG_ON(preemptible());
8965c1c0 JF	235
bfd074e0	236	__get_cpu_var(paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
8965c1c0 JF	237	}
	238
	239	void paravirt_enter_lazy_mmu(void)
	240	{
	241	enter_lazy(PARAVIRT_LAZY_MMU);
	242	}
	243
	244	void paravirt_leave_lazy_mmu(void)
	245	{
	246	paravirt_leave_lazy(PARAVIRT_LAZY_MMU);
	247	}
	248
	249	void paravirt_enter_lazy_cpu(void)
	250	{
	251	enter_lazy(PARAVIRT_LAZY_CPU);
	252	}
	253
	254	void paravirt_leave_lazy_cpu(void)
	255	{
	256	paravirt_leave_lazy(PARAVIRT_LAZY_CPU);
	257	}
	258
	259	enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
	260	{
bfd074e0	261	return __get_cpu_var(paravirt_lazy_mode);
8965c1c0 JF	262	}
8965c1c0 JF	263
93b1eab3	264	struct pv_info pv_info = {
d3561b7f RR	265	.name = "bare hardware",
	266	.paravirt_enabled = 0,
	267	.kernel_rpl = 0,
5311ab62	268	.shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */
93b1eab3	269	};
d3561b7f	270
93b1eab3 JF	271	struct pv_init_ops pv_init_ops = {
93b1eab3 JF	272	.patch = native_patch,
d3561b7f	273	.banner = default_banner,
45876233	274	.arch_setup = paravirt_nop,
d3561b7f	275	.memory_setup = machine_specific_memory_setup,
93b1eab3 JF	276	};
	277
	278	struct pv_time_ops pv_time_ops = {
	279	.time_init = hpet_time_init,
d3561b7f RR	280	.get_wallclock = native_get_wallclock,
d3561b7f RR	281	.set_wallclock = native_set_wallclock,
93b1eab3 JF	282	.sched_clock = native_sched_clock,
	283	.get_cpu_khz = native_calculate_cpu_khz,
	284	};
	285
	286	struct pv_irq_ops pv_irq_ops = {
d3561b7f	287	.init_IRQ = native_init_IRQ,
93b1eab3 JF	288	.save_fl = native_save_fl,
	289	.restore_fl = native_restore_fl,
	290	.irq_disable = native_irq_disable,
	291	.irq_enable = native_irq_enable,
	292	.safe_halt = native_safe_halt,
	293	.halt = native_halt,
	294	};
d3561b7f	295
93b1eab3	296	struct pv_cpu_ops pv_cpu_ops = {
d3561b7f RR	297	.cpuid = native_cpuid,
	298	.get_debugreg = native_get_debugreg,
	299	.set_debugreg = native_set_debugreg,
	300	.clts = native_clts,
	301	.read_cr0 = native_read_cr0,
	302	.write_cr0 = native_write_cr0,
d3561b7f RR	303	.read_cr4 = native_read_cr4,
	304	.read_cr4_safe = native_read_cr4_safe,
	305	.write_cr4 = native_write_cr4,
88b4755f GOC	306	#ifdef CONFIG_X86_64
	307	.read_cr8 = native_read_cr8,
	308	.write_cr8 = native_write_cr8,
	309	#endif
d3561b7f	310	.wbinvd = native_wbinvd,
90a0a06a RR	311	.read_msr = native_read_msr_safe,
90a0a06a RR	312	.write_msr = native_write_msr_safe,
d3561b7f RR	313	.read_tsc = native_read_tsc,
d3561b7f RR	314	.read_pmc = native_read_pmc,
e5aaac44	315	.read_tscp = native_read_tscp,
d3561b7f RR	316	.load_tr_desc = native_load_tr_desc,
	317	.set_ldt = native_set_ldt,
	318	.load_gdt = native_load_gdt,
	319	.load_idt = native_load_idt,
	320	.store_gdt = native_store_gdt,
	321	.store_idt = native_store_idt,
	322	.store_tr = native_store_tr,
	323	.load_tls = native_load_tls,
75b8bb3e	324	.write_ldt_entry = native_write_ldt_entry,
014b15be	325	.write_gdt_entry = native_write_gdt_entry,
8d947344	326	.write_idt_entry = native_write_idt_entry,
faca6227	327	.load_sp0 = native_load_sp0,
d3561b7f	328
6abcd98f	329	.irq_enable_syscall_ret = native_irq_enable_syscall_ret,
93b1eab3	330	.iret = native_iret,
e801f864	331	.swapgs = native_swapgs,
93b1eab3	332
d3561b7f RR	333	.set_iopl_mask = native_set_iopl_mask,
d3561b7f RR	334	.io_delay = native_io_delay,
8965c1c0 JF	335
	336	.lazy_mode = {
	337	.enter = paravirt_nop,
	338	.leave = paravirt_nop,
	339	},
93b1eab3	340	};
d3561b7f	341
93b1eab3	342	struct pv_apic_ops pv_apic_ops = {
13623d79 RR	343	#ifdef CONFIG_X86_LOCAL_APIC
	344	.apic_write = native_apic_write,
	345	.apic_write_atomic = native_apic_write_atomic,
	346	.apic_read = native_apic_read,
bbab4f3b ZA	347	.setup_boot_clock = setup_boot_APIC_clock,
bbab4f3b ZA	348	.setup_secondary_clock = setup_secondary_APIC_clock,
0260c196	349	.startup_ipi_hook = paravirt_nop,
13623d79	350	#endif
93b1eab3 JF	351	};
93b1eab3 JF	352
93b1eab3	353	struct pv_mmu_ops pv_mmu_ops = {
d8dd8eec	354	#ifndef CONFIG_X86_64
b239fb25 JF	355	.pagetable_setup_start = native_pagetable_setup_start,
b239fb25 JF	356	.pagetable_setup_done = native_pagetable_setup_done,
d8dd8eec	357	#endif
b239fb25	358
93b1eab3 JF	359	.read_cr2 = native_read_cr2,
	360	.write_cr2 = native_write_cr2,
	361	.read_cr3 = native_read_cr3,
	362	.write_cr3 = native_write_cr3,
	363
da181a8b RR	364	.flush_tlb_user = native_flush_tlb,
	365	.flush_tlb_kernel = native_flush_tlb_global,
	366	.flush_tlb_single = native_flush_tlb_single,
d4c10477	367	.flush_tlb_others = native_flush_tlb_others,
da181a8b	368
6944a9c8 JF	369	.alloc_pte = paravirt_nop,
	370	.alloc_pmd = paravirt_nop,
	371	.alloc_pmd_clone = paravirt_nop,
2761fa09	372	.alloc_pud = paravirt_nop,
6944a9c8 JF	373	.release_pte = paravirt_nop,
6944a9c8 JF	374	.release_pmd = paravirt_nop,
2761fa09	375	.release_pud = paravirt_nop,
c119ecce	376
da181a8b RR	377	.set_pte = native_set_pte,
	378	.set_pte_at = native_set_pte_at,
	379	.set_pmd = native_set_pmd,
45876233 JF	380	.pte_update = paravirt_nop,
45876233 JF	381	.pte_update_defer = paravirt_nop,
3dc494e8	382
08b882c6 JF	383	.ptep_modify_prot_start = __ptep_modify_prot_start,
	384	.ptep_modify_prot_commit = __ptep_modify_prot_commit,
	385
ce6234b5 JF	386	#ifdef CONFIG_HIGHPTE
	387	.kmap_atomic_pte = kmap_atomic,
	388	#endif
	389
f95f2f7b	390	#if PAGETABLE_LEVELS >= 3
da181a8b RR	391	#ifdef CONFIG_X86_PAE
	392	.set_pte_atomic = native_set_pte_atomic,
	393	.set_pte_present = native_set_pte_present,
da181a8b RR	394	.pte_clear = native_pte_clear,
da181a8b RR	395	.pmd_clear = native_pmd_clear,
f95f2f7b EH	396	#endif
f95f2f7b EH	397	.set_pud = native_set_pud,
3dc494e8 JF	398	.pmd_val = native_pmd_val,
3dc494e8 JF	399	.make_pmd = native_make_pmd,
f95f2f7b EH	400
	401	#if PAGETABLE_LEVELS == 4
	402	.pud_val = native_pud_val,
	403	.make_pud = native_make_pud,
	404	.set_pgd = native_set_pgd,
da181a8b	405	#endif
f95f2f7b	406	#endif /* PAGETABLE_LEVELS >= 3 */
da181a8b	407
3dc494e8	408	.pte_val = native_pte_val,
a15af1c9	409	.pte_flags = native_pte_val,
3dc494e8 JF	410	.pgd_val = native_pgd_val,
	411
	412	.make_pte = native_make_pte,
	413	.make_pgd = native_make_pgd,
	414
d6dd61c8 JF	415	.dup_mmap = paravirt_nop,
	416	.exit_mmap = paravirt_nop,
	417	.activate_mm = paravirt_nop,
8965c1c0 JF	418
	419	.lazy_mode = {
	420	.enter = paravirt_nop,
	421	.leave = paravirt_nop,
	422	},
d3561b7f	423	};
0dbe5a11	424
93b1eab3	425	EXPORT_SYMBOL_GPL(pv_time_ops);
f97b8954 JF	426	EXPORT_SYMBOL (pv_cpu_ops);
f97b8954 JF	427	EXPORT_SYMBOL (pv_mmu_ops);
93b1eab3 JF	428	EXPORT_SYMBOL_GPL(pv_apic_ops);
	429	EXPORT_SYMBOL_GPL(pv_info);
	430	EXPORT_SYMBOL (pv_irq_ops);