i386/x86_64: move headers to include/asm-x86

Move the headers to include/asm-x86 and fixup the
header install make rules

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1085 insertions, 0 deletions

diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
new file mode 100644
index 00000000000..9fa3fa9e62d
--- /dev/null
+++ b/include/asm-x86/paravirt.h
@@ -0,0 +1,1085 @@
+#ifndef __ASM_PARAVIRT_H
+#define __ASM_PARAVIRT_H
+/* Various instructions on x86 need to be replaced for
+ * para-virtualization: those hooks are defined here. */
+
+#ifdef CONFIG_PARAVIRT
+#include <asm/page.h>
+
+/* Bitmask of what can be clobbered: usually at least eax. */
+#define CLBR_NONE 0x0
+#define CLBR_EAX 0x1
+#define CLBR_ECX 0x2
+#define CLBR_EDX 0x4
+#define CLBR_ANY 0x7
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+#include <linux/cpumask.h>
+#include <asm/kmap_types.h>
+
+struct page;
+struct thread_struct;
+struct Xgt_desc_struct;
+struct tss_struct;
+struct mm_struct;
+struct desc_struct;
+
+/* Lazy mode for batching updates / context switch */
+enum paravirt_lazy_mode {
+	PARAVIRT_LAZY_NONE = 0,
+	PARAVIRT_LAZY_MMU = 1,
+	PARAVIRT_LAZY_CPU = 2,
+	PARAVIRT_LAZY_FLUSH = 3,
+};
+
+struct paravirt_ops
+{
+	unsigned int kernel_rpl;
+	int shared_kernel_pmd;
+ 	int paravirt_enabled;
+	const char *name;
+
+	/*
+	 * Patch may replace one of the defined code sequences with arbitrary
+	 * code, subject to the same register constraints.  This generally
+	 * means the code is not free to clobber any registers other than EAX.
+	 * The patch function should return the number of bytes of code
+	 * generated, as we nop pad the rest in generic code.
+	 */
+	unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
+			  unsigned long addr, unsigned len);
+
+	/* Basic arch-specific setup */
+	void (*arch_setup)(void);
+	char *(*memory_setup)(void);
+	void (*post_allocator_init)(void);
+
+	void (*init_IRQ)(void);
+	void (*time_init)(void);
+
+	/*
+	 * Called before/after init_mm pagetable setup. setup_start
+	 * may reset %cr3, and may pre-install parts of the pagetable;
+	 * pagetable setup is expected to preserve any existing
+	 * mapping.
+	 */
+	void (*pagetable_setup_start)(pgd_t *pgd_base);
+	void (*pagetable_setup_done)(pgd_t *pgd_base);
+
+	/* Print a banner to identify the environment */
+	void (*banner)(void);
+
+	/* Set and set time of day */
+	unsigned long (*get_wallclock)(void);
+	int (*set_wallclock)(unsigned long);
+
+	/* cpuid emulation, mostly so that caps bits can be disabled */
+	void (*cpuid)(unsigned int *eax, unsigned int *ebx,
+		      unsigned int *ecx, unsigned int *edx);
+
+	/* hooks for various privileged instructions */
+	unsigned long (*get_debugreg)(int regno);
+	void (*set_debugreg)(int regno, unsigned long value);
+
+	void (*clts)(void);
+
+	unsigned long (*read_cr0)(void);
+	void (*write_cr0)(unsigned long);
+
+	unsigned long (*read_cr2)(void);
+	void (*write_cr2)(unsigned long);
+
+	unsigned long (*read_cr3)(void);
+	void (*write_cr3)(unsigned long);
+
+	unsigned long (*read_cr4_safe)(void);
+	unsigned long (*read_cr4)(void);
+	void (*write_cr4)(unsigned long);
+
+	/*
+	 * Get/set interrupt state.  save_fl and restore_fl are only
+	 * expected to use X86_EFLAGS_IF; all other bits
+	 * returned from save_fl are undefined, and may be ignored by
+	 * restore_fl.
+	 */
+	unsigned long (*save_fl)(void);
+	void (*restore_fl)(unsigned long);
+	void (*irq_disable)(void);
+	void (*irq_enable)(void);
+	void (*safe_halt)(void);
+	void (*halt)(void);
+
+	void (*wbinvd)(void);
+
+	/* MSR, PMC and TSR operations.
+	   err = 0/-EFAULT.  wrmsr returns 0/-EFAULT. */
+	u64 (*read_msr)(unsigned int msr, int *err);
+	int (*write_msr)(unsigned int msr, u64 val);
+
+	u64 (*read_tsc)(void);
+	u64 (*read_pmc)(void);
+	unsigned long long (*sched_clock)(void);
+	unsigned long (*get_cpu_khz)(void);
+
+	/* Segment descriptor handling */
+	void (*load_tr_desc)(void);
+	void (*load_gdt)(const struct Xgt_desc_struct *);
+	void (*load_idt)(const struct Xgt_desc_struct *);
+	void (*store_gdt)(struct Xgt_desc_struct *);
+	void (*store_idt)(struct Xgt_desc_struct *);
+	void (*set_ldt)(const void *desc, unsigned entries);
+	unsigned long (*store_tr)(void);
+	void (*load_tls)(struct thread_struct *t, unsigned int cpu);
+	void (*write_ldt_entry)(struct desc_struct *,
+				int entrynum, u32 low, u32 high);
+	void (*write_gdt_entry)(struct desc_struct *,
+				int entrynum, u32 low, u32 high);
+	void (*write_idt_entry)(struct desc_struct *,
+				int entrynum, u32 low, u32 high);
+	void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);
+
+	void (*set_iopl_mask)(unsigned mask);
+	void (*io_delay)(void);
+
+	/*
+	 * Hooks for intercepting the creation/use/destruction of an
+	 * mm_struct.
+	 */
+	void (*activate_mm)(struct mm_struct *prev,
+			    struct mm_struct *next);
+	void (*dup_mmap)(struct mm_struct *oldmm,
+			 struct mm_struct *mm);
+	void (*exit_mmap)(struct mm_struct *mm);
+
+#ifdef CONFIG_X86_LOCAL_APIC
+	/*
+	 * Direct APIC operations, principally for VMI.  Ideally
+	 * these shouldn't be in this interface.
+	 */
+	void (*apic_write)(unsigned long reg, unsigned long v);
+	void (*apic_write_atomic)(unsigned long reg, unsigned long v);
+	unsigned long (*apic_read)(unsigned long reg);
+	void (*setup_boot_clock)(void);
+	void (*setup_secondary_clock)(void);
+
+	void (*startup_ipi_hook)(int phys_apicid,
+				 unsigned long start_eip,
+				 unsigned long start_esp);
+#endif
+
+	/* TLB operations */
+	void (*flush_tlb_user)(void);
+	void (*flush_tlb_kernel)(void);
+	void (*flush_tlb_single)(unsigned long addr);
+	void (*flush_tlb_others)(const cpumask_t *cpus, struct mm_struct *mm,
+				 unsigned long va);
+
+	/* Hooks for allocating/releasing pagetable pages */
+	void (*alloc_pt)(struct mm_struct *mm, u32 pfn);
+	void (*alloc_pd)(u32 pfn);
+	void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
+	void (*release_pt)(u32 pfn);
+	void (*release_pd)(u32 pfn);
+
+	/* Pagetable manipulation functions */
+	void (*set_pte)(pte_t *ptep, pte_t pteval);
+	void (*set_pte_at)(struct mm_struct *mm, unsigned long addr,
+			   pte_t *ptep, pte_t pteval);
+	void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval);
+	void (*pte_update)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+	void (*pte_update_defer)(struct mm_struct *mm,
+				 unsigned long addr, pte_t *ptep);
+
+#ifdef CONFIG_HIGHPTE
+	void *(*kmap_atomic_pte)(struct page *page, enum km_type type);
+#endif
+
+#ifdef CONFIG_X86_PAE
+	void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
+ 	void (*set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
+	void (*set_pud)(pud_t *pudp, pud_t pudval);
+ 	void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+	void (*pmd_clear)(pmd_t *pmdp);
+
+	unsigned long long (*pte_val)(pte_t);
+	unsigned long long (*pmd_val)(pmd_t);
+	unsigned long long (*pgd_val)(pgd_t);
+
+	pte_t (*make_pte)(unsigned long long pte);
+	pmd_t (*make_pmd)(unsigned long long pmd);
+	pgd_t (*make_pgd)(unsigned long long pgd);
+#else
+	unsigned long (*pte_val)(pte_t);
+	unsigned long (*pgd_val)(pgd_t);
+
+	pte_t (*make_pte)(unsigned long pte);
+	pgd_t (*make_pgd)(unsigned long pgd);
+#endif
+
+	/* Set deferred update mode, used for batching operations. */
+	void (*set_lazy_mode)(enum paravirt_lazy_mode mode);
+
+	/* These two are jmp to, not actually called. */
+	void (*irq_enable_sysexit)(void);
+	void (*iret)(void);
+};
+
+extern struct paravirt_ops paravirt_ops;
+
+#define PARAVIRT_PATCH(x)					\
+	(offsetof(struct paravirt_ops, x) / sizeof(void *))
+
+#define paravirt_type(type)					\
+	[paravirt_typenum] "i" (PARAVIRT_PATCH(type))
+#define paravirt_clobber(clobber)		\
+	[paravirt_clobber] "i" (clobber)
+
+/*
+ * Generate some code, and mark it as patchable by the
+ * apply_paravirt() alternate instruction patcher.
+ */
+#define _paravirt_alt(insn_string, type, clobber)	\
+	"771:\n\t" insn_string "\n" "772:\n"		\
+	".pushsection .parainstructions,\"a\"\n"	\
+	"  .long 771b\n"				\
+	"  .byte " type "\n"				\
+	"  .byte 772b-771b\n"				\
+	"  .short " clobber "\n"			\
+	".popsection\n"
+
+/* Generate patchable code, with the default asm parameters. */
+#define paravirt_alt(insn_string)					\
+	_paravirt_alt(insn_string, "%c[paravirt_typenum]", "%c[paravirt_clobber]")
+
+unsigned paravirt_patch_nop(void);
+unsigned paravirt_patch_ignore(unsigned len);
+unsigned paravirt_patch_call(void *insnbuf,
+			     const void *target, u16 tgt_clobbers,
+			     unsigned long addr, u16 site_clobbers,
+			     unsigned len);
+unsigned paravirt_patch_jmp(const void *target, void *insnbuf,
+			    unsigned long addr, unsigned len);
+unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
+				unsigned long addr, unsigned len);
+
+unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
+			      const char *start, const char *end);
+
+int paravirt_disable_iospace(void);
+
+/*
+ * This generates an indirect call based on the operation type number.
+ * The type number, computed in PARAVIRT_PATCH, is derived from the
+ * offset into the paravirt_ops structure, and can therefore be freely
+ * converted back into a structure offset.
+ */
+#define PARAVIRT_CALL	"call *(paravirt_ops+%c[paravirt_typenum]*4);"
+
+/*
+ * These macros are intended to wrap calls into a paravirt_ops
+ * operation, so that they can be later identified and patched at
+ * runtime.
+ *
+ * Normally, a call to a pv_op function is a simple indirect call:
+ * (paravirt_ops.operations)(args...).
+ *
+ * Unfortunately, this is a relatively slow operation for modern CPUs,
+ * because it cannot necessarily determine what the destination
+ * address is.  In this case, the address is a runtime constant, so at
+ * the very least we can patch the call to e a simple direct call, or
+ * ideally, patch an inline implementation into the callsite.  (Direct
+ * calls are essentially free, because the call and return addresses
+ * are completely predictable.)
+ *
+ * These macros rely on the standard gcc "regparm(3)" calling
+ * convention, in which the first three arguments are placed in %eax,
+ * %edx, %ecx (in that order), and the remaining arguments are placed
+ * on the stack.  All caller-save registers (eax,edx,ecx) are expected
+ * to be modified (either clobbered or used for return values).
+ *
+ * The call instruction itself is marked by placing its start address
+ * and size into the .parainstructions section, so that
+ * apply_paravirt() in arch/i386/kernel/alternative.c can do the
+ * appropriate patching under the control of the backend paravirt_ops
+ * implementation.
+ *
+ * Unfortunately there's no way to get gcc to generate the args setup
+ * for the call, and then allow the call itself to be generated by an
+ * inline asm.  Because of this, we must do the complete arg setup and
+ * return value handling from within these macros.  This is fairly
+ * cumbersome.
+ *
+ * There are 5 sets of PVOP_* macros for dealing with 0-4 arguments.
+ * It could be extended to more arguments, but there would be little
+ * to be gained from that.  For each number of arguments, there are
+ * the two VCALL and CALL variants for void and non-void functions.
+ *
+ * When there is a return value, the invoker of the macro must specify
+ * the return type.  The macro then uses sizeof() on that type to
+ * determine whether its a 32 or 64 bit value, and places the return
+ * in the right register(s) (just %eax for 32-bit, and %edx:%eax for
+ * 64-bit).
+ *
+ * 64-bit arguments are passed as a pair of adjacent 32-bit arguments
+ * in low,high order.
+ *
+ * Small structures are passed and returned in registers.  The macro
+ * calling convention can't directly deal with this, so the wrapper
+ * functions must do this.
+ *
+ * These PVOP_* macros are only defined within this header.  This
+ * means that all uses must be wrapped in inline functions.  This also
+ * makes sure the incoming and outgoing types are always correct.
+ */
+#define __PVOP_CALL(rettype, op, pre, post, ...)			\
+	({								\
+		rettype __ret;						\
+		unsigned long __eax, __edx, __ecx;			\
+		if (sizeof(rettype) > sizeof(unsigned long)) {		\
+			asm volatile(pre				\
+				     paravirt_alt(PARAVIRT_CALL)	\
+				     post				\
+				     : "=a" (__eax), "=d" (__edx),	\
+				       "=c" (__ecx)			\
+				     : paravirt_type(op),		\
+				       paravirt_clobber(CLBR_ANY),	\
+				       ##__VA_ARGS__			\
+				     : "memory", "cc");			\
+			__ret = (rettype)((((u64)__edx) << 32) | __eax); \
+		} else {						\
+			asm volatile(pre				\
+				     paravirt_alt(PARAVIRT_CALL)	\
+				     post				\
+				     : "=a" (__eax), "=d" (__edx),	\
+				       "=c" (__ecx)			\
+				     : paravirt_type(op),		\
+				       paravirt_clobber(CLBR_ANY),	\
+				       ##__VA_ARGS__			\
+				     : "memory", "cc");			\
+			__ret = (rettype)__eax;				\
+		}							\
+		__ret;							\
+	})
+#define __PVOP_VCALL(op, pre, post, ...)				\
+	({								\
+		unsigned long __eax, __edx, __ecx;			\
+		asm volatile(pre					\
+			     paravirt_alt(PARAVIRT_CALL)		\
+			     post					\
+			     : "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
+			     : paravirt_type(op),			\
+			       paravirt_clobber(CLBR_ANY),		\
+			       ##__VA_ARGS__				\
+			     : "memory", "cc");				\
+	})
+
+#define PVOP_CALL0(rettype, op)						\
+	__PVOP_CALL(rettype, op, "", "")
+#define PVOP_VCALL0(op)							\
+	__PVOP_VCALL(op, "", "")
+
+#define PVOP_CALL1(rettype, op, arg1)					\
+	__PVOP_CALL(rettype, op, "", "", "0" ((u32)(arg1)))
+#define PVOP_VCALL1(op, arg1)						\
+	__PVOP_VCALL(op, "", "", "0" ((u32)(arg1)))
+
+#define PVOP_CALL2(rettype, op, arg1, arg2)				\
+	__PVOP_CALL(rettype, op, "", "", "0" ((u32)(arg1)), "1" ((u32)(arg2)))
+#define PVOP_VCALL2(op, arg1, arg2)					\
+	__PVOP_VCALL(op, "", "", "0" ((u32)(arg1)), "1" ((u32)(arg2)))
+
+#define PVOP_CALL3(rettype, op, arg1, arg2, arg3)			\
+	__PVOP_CALL(rettype, op, "", "", "0" ((u32)(arg1)),		\
+		    "1"((u32)(arg2)), "2"((u32)(arg3)))
+#define PVOP_VCALL3(op, arg1, arg2, arg3)				\
+	__PVOP_VCALL(op, "", "", "0" ((u32)(arg1)), "1"((u32)(arg2)),	\
+		     "2"((u32)(arg3)))
+
+#define PVOP_CALL4(rettype, op, arg1, arg2, arg3, arg4)			\
+	__PVOP_CALL(rettype, op,					\
+		    "push %[_arg4];", "lea 4(%%esp),%%esp;",		\
+		    "0" ((u32)(arg1)), "1" ((u32)(arg2)),		\
+		    "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)))
+#define PVOP_VCALL4(op, arg1, arg2, arg3, arg4)				\
+	__PVOP_VCALL(op,						\
+		    "push %[_arg4];", "lea 4(%%esp),%%esp;",		\
+		    "0" ((u32)(arg1)), "1" ((u32)(arg2)),		\
+		    "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)))
+
+static inline int paravirt_enabled(void)
+{
+	return paravirt_ops.paravirt_enabled;
+}
+
+static inline void load_esp0(struct tss_struct *tss,
+			     struct thread_struct *thread)
+{
+	PVOP_VCALL2(load_esp0, tss, thread);
+}
+
+#define ARCH_SETUP			paravirt_ops.arch_setup();
+static inline unsigned long get_wallclock(void)
+{
+	return PVOP_CALL0(unsigned long, get_wallclock);
+}
+
+static inline int set_wallclock(unsigned long nowtime)
+{
+	return PVOP_CALL1(int, set_wallclock, nowtime);
+}
+
+static inline void (*choose_time_init(void))(void)
+{
+	return paravirt_ops.time_init;
+}
+
+/* The paravirtualized CPUID instruction. */
+static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
+			   unsigned int *ecx, unsigned int *edx)
+{
+	PVOP_VCALL4(cpuid, eax, ebx, ecx, edx);
+}
+
+/*
+ * These special macros can be used to get or set a debugging register
+ */
+static inline unsigned long paravirt_get_debugreg(int reg)
+{
+	return PVOP_CALL1(unsigned long, get_debugreg, reg);
+}
+#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
+static inline void set_debugreg(unsigned long val, int reg)
+{
+	PVOP_VCALL2(set_debugreg, reg, val);
+}
+
+static inline void clts(void)
+{
+	PVOP_VCALL0(clts);
+}
+
+static inline unsigned long read_cr0(void)
+{
+	return PVOP_CALL0(unsigned long, read_cr0);
+}
+
+static inline void write_cr0(unsigned long x)
+{
+	PVOP_VCALL1(write_cr0, x);
+}
+
+static inline unsigned long read_cr2(void)
+{
+	return PVOP_CALL0(unsigned long, read_cr2);
+}
+
+static inline void write_cr2(unsigned long x)
+{
+	PVOP_VCALL1(write_cr2, x);
+}
+
+static inline unsigned long read_cr3(void)
+{
+	return PVOP_CALL0(unsigned long, read_cr3);
+}
+
+static inline void write_cr3(unsigned long x)
+{
+	PVOP_VCALL1(write_cr3, x);
+}
+
+static inline unsigned long read_cr4(void)
+{
+	return PVOP_CALL0(unsigned long, read_cr4);
+}
+static inline unsigned long read_cr4_safe(void)
+{
+	return PVOP_CALL0(unsigned long, read_cr4_safe);
+}
+
+static inline void write_cr4(unsigned long x)
+{
+	PVOP_VCALL1(write_cr4, x);
+}
+
+static inline void raw_safe_halt(void)
+{
+	PVOP_VCALL0(safe_halt);
+}
+
+static inline void halt(void)
+{
+	PVOP_VCALL0(safe_halt);
+}
+
+static inline void wbinvd(void)
+{
+	PVOP_VCALL0(wbinvd);
+}
+
+#define get_kernel_rpl()  (paravirt_ops.kernel_rpl)
+
+static inline u64 paravirt_read_msr(unsigned msr, int *err)
+{
+	return PVOP_CALL2(u64, read_msr, msr, err);
+}
+static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high)
+{
+	return PVOP_CALL3(int, write_msr, msr, low, high);
+}
+
+/* These should all do BUG_ON(_err), but our headers are too tangled. */
+#define rdmsr(msr,val1,val2) do {		\
+	int _err;				\
+	u64 _l = paravirt_read_msr(msr, &_err);	\
+	val1 = (u32)_l;				\
+	val2 = _l >> 32;			\
+} while(0)
+
+#define wrmsr(msr,val1,val2) do {		\
+	paravirt_write_msr(msr, val1, val2);	\
+} while(0)
+
+#define rdmsrl(msr,val) do {			\
+	int _err;				\
+	val = paravirt_read_msr(msr, &_err);	\
+} while(0)
+
+#define wrmsrl(msr,val)		wrmsr(msr, (u32)((u64)(val)), ((u64)(val))>>32)
+#define wrmsr_safe(msr,a,b)	paravirt_write_msr(msr, a, b)
+
+/* rdmsr with exception handling */
+#define rdmsr_safe(msr,a,b) ({			\
+	int _err;				\
+	u64 _l = paravirt_read_msr(msr, &_err);	\
+	(*a) = (u32)_l;				\
+	(*b) = _l >> 32;			\
+	_err; })
+
+
+static inline u64 paravirt_read_tsc(void)
+{
+	return PVOP_CALL0(u64, read_tsc);
+}
+
+#define rdtscl(low) do {			\
+	u64 _l = paravirt_read_tsc();		\
+	low = (int)_l;				\
+} while(0)
+
+#define rdtscll(val) (val = paravirt_read_tsc())
+
+static inline unsigned long long paravirt_sched_clock(void)
+{
+	return PVOP_CALL0(unsigned long long, sched_clock);
+}
+#define calculate_cpu_khz() (paravirt_ops.get_cpu_khz())
+
+#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
+
+static inline unsigned long long paravirt_read_pmc(int counter)
+{
+	return PVOP_CALL1(u64, read_pmc, counter);
+}
+
+#define rdpmc(counter,low,high) do {		\
+	u64 _l = paravirt_read_pmc(counter);	\
+	low = (u32)_l;				\
+	high = _l >> 32;			\
+} while(0)
+
+static inline void load_TR_desc(void)
+{
+	PVOP_VCALL0(load_tr_desc);
+}
+static inline void load_gdt(const struct Xgt_desc_struct *dtr)
+{
+	PVOP_VCALL1(load_gdt, dtr);
+}
+static inline void load_idt(const struct Xgt_desc_struct *dtr)
+{
+	PVOP_VCALL1(load_idt, dtr);
+}
+static inline void set_ldt(const void *addr, unsigned entries)
+{
+	PVOP_VCALL2(set_ldt, addr, entries);
+}
+static inline void store_gdt(struct Xgt_desc_struct *dtr)
+{
+	PVOP_VCALL1(store_gdt, dtr);
+}
+static inline void store_idt(struct Xgt_desc_struct *dtr)
+{
+	PVOP_VCALL1(store_idt, dtr);
+}
+static inline unsigned long paravirt_store_tr(void)
+{
+	return PVOP_CALL0(unsigned long, store_tr);
+}
+#define store_tr(tr)	((tr) = paravirt_store_tr())
+static inline void load_TLS(struct thread_struct *t, unsigned cpu)
+{
+	PVOP_VCALL2(load_tls, t, cpu);
+}
+static inline void write_ldt_entry(void *dt, int entry, u32 low, u32 high)
+{
+	PVOP_VCALL4(write_ldt_entry, dt, entry, low, high);
+}
+static inline void write_gdt_entry(void *dt, int entry, u32 low, u32 high)
+{
+	PVOP_VCALL4(write_gdt_entry, dt, entry, low, high);
+}
+static inline void write_idt_entry(void *dt, int entry, u32 low, u32 high)
+{
+	PVOP_VCALL4(write_idt_entry, dt, entry, low, high);
+}
+static inline void set_iopl_mask(unsigned mask)
+{
+	PVOP_VCALL1(set_iopl_mask, mask);
+}
+
+/* The paravirtualized I/O functions */
+static inline void slow_down_io(void) {
+	paravirt_ops.io_delay();
+#ifdef REALLY_SLOW_IO
+	paravirt_ops.io_delay();
+	paravirt_ops.io_delay();
+	paravirt_ops.io_delay();
+#endif
+}
+
+#ifdef CONFIG_X86_LOCAL_APIC
+/*
+ * Basic functions accessing APICs.
+ */
+static inline void apic_write(unsigned long reg, unsigned long v)
+{
+	PVOP_VCALL2(apic_write, reg, v);
+}
+
+static inline void apic_write_atomic(unsigned long reg, unsigned long v)
+{
+	PVOP_VCALL2(apic_write_atomic, reg, v);
+}
+
+static inline unsigned long apic_read(unsigned long reg)
+{
+	return PVOP_CALL1(unsigned long, apic_read, reg);
+}
+
+static inline void setup_boot_clock(void)
+{
+	PVOP_VCALL0(setup_boot_clock);
+}
+
+static inline void setup_secondary_clock(void)
+{
+	PVOP_VCALL0(setup_secondary_clock);
+}
+#endif
+
+static inline void paravirt_post_allocator_init(void)
+{
+	if (paravirt_ops.post_allocator_init)
+		(*paravirt_ops.post_allocator_init)();
+}
+
+static inline void paravirt_pagetable_setup_start(pgd_t *base)
+{
+	if (paravirt_ops.pagetable_setup_start)
+		(*paravirt_ops.pagetable_setup_start)(base);
+}
+
+static inline void paravirt_pagetable_setup_done(pgd_t *base)
+{
+	if (paravirt_ops.pagetable_setup_done)
+		(*paravirt_ops.pagetable_setup_done)(base);
+}
+
+#ifdef CONFIG_SMP
+static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
+				    unsigned long start_esp)
+{
+	PVOP_VCALL3(startup_ipi_hook, phys_apicid, start_eip, start_esp);
+}
+#endif
+
+static inline void paravirt_activate_mm(struct mm_struct *prev,
+					struct mm_struct *next)
+{
+	PVOP_VCALL2(activate_mm, prev, next);
+}
+
+static inline void arch_dup_mmap(struct mm_struct *oldmm,
+				 struct mm_struct *mm)
+{
+	PVOP_VCALL2(dup_mmap, oldmm, mm);
+}
+
+static inline void arch_exit_mmap(struct mm_struct *mm)
+{
+	PVOP_VCALL1(exit_mmap, mm);
+}
+
+static inline void __flush_tlb(void)
+{
+	PVOP_VCALL0(flush_tlb_user);
+}
+static inline void __flush_tlb_global(void)
+{
+	PVOP_VCALL0(flush_tlb_kernel);
+}
+static inline void __flush_tlb_single(unsigned long addr)
+{
+	PVOP_VCALL1(flush_tlb_single, addr);
+}
+
+static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
+				    unsigned long va)
+{
+	PVOP_VCALL3(flush_tlb_others, &cpumask, mm, va);
+}
+
+static inline void paravirt_alloc_pt(struct mm_struct *mm, unsigned pfn)
+{
+	PVOP_VCALL2(alloc_pt, mm, pfn);
+}
+static inline void paravirt_release_pt(unsigned pfn)
+{
+	PVOP_VCALL1(release_pt, pfn);
+}
+
+static inline void paravirt_alloc_pd(unsigned pfn)
+{
+	PVOP_VCALL1(alloc_pd, pfn);
+}
+
+static inline void paravirt_alloc_pd_clone(unsigned pfn, unsigned clonepfn,
+					   unsigned start, unsigned count)
+{
+	PVOP_VCALL4(alloc_pd_clone, pfn, clonepfn, start, count);
+}
+static inline void paravirt_release_pd(unsigned pfn)
+{
+	PVOP_VCALL1(release_pd, pfn);
+}
+
+#ifdef CONFIG_HIGHPTE
+static inline void *kmap_atomic_pte(struct page *page, enum km_type type)
+{
+	unsigned long ret;
+	ret = PVOP_CALL2(unsigned long, kmap_atomic_pte, page, type);
+	return (void *)ret;
+}
+#endif
+
+static inline void pte_update(struct mm_struct *mm, unsigned long addr,
+			      pte_t *ptep)
+{
+	PVOP_VCALL3(pte_update, mm, addr, ptep);
+}
+
+static inline void pte_update_defer(struct mm_struct *mm, unsigned long addr,
+				    pte_t *ptep)
+{
+	PVOP_VCALL3(pte_update_defer, mm, addr, ptep);
+}
+
+#ifdef CONFIG_X86_PAE
+static inline pte_t __pte(unsigned long long val)
+{
+	unsigned long long ret = PVOP_CALL2(unsigned long long, make_pte,
+					    val, val >> 32);
+	return (pte_t) { ret, ret >> 32 };
+}
+
+static inline pmd_t __pmd(unsigned long long val)
+{
+	return (pmd_t) { PVOP_CALL2(unsigned long long, make_pmd, val, val >> 32) };
+}
+
+static inline pgd_t __pgd(unsigned long long val)
+{
+	return (pgd_t) { PVOP_CALL2(unsigned long long, make_pgd, val, val >> 32) };
+}
+
+static inline unsigned long long pte_val(pte_t x)
+{
+	return PVOP_CALL2(unsigned long long, pte_val, x.pte_low, x.pte_high);
+}
+
+static inline unsigned long long pmd_val(pmd_t x)
+{
+	return PVOP_CALL2(unsigned long long, pmd_val, x.pmd, x.pmd >> 32);
+}
+
+static inline unsigned long long pgd_val(pgd_t x)
+{
+	return PVOP_CALL2(unsigned long long, pgd_val, x.pgd, x.pgd >> 32);
+}
+
+static inline void set_pte(pte_t *ptep, pte_t pteval)
+{
+	PVOP_VCALL3(set_pte, ptep, pteval.pte_low, pteval.pte_high);
+}
+
+static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+			      pte_t *ptep, pte_t pteval)
+{
+	/* 5 arg words */
+	paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
+}
+
+static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
+{
+	PVOP_VCALL3(set_pte_atomic, ptep, pteval.pte_low, pteval.pte_high);
+}
+
+static inline void set_pte_present(struct mm_struct *mm, unsigned long addr,
+				   pte_t *ptep, pte_t pte)
+{
+	/* 5 arg words */
+	paravirt_ops.set_pte_present(mm, addr, ptep, pte);
+}
+
+static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
+{
+	PVOP_VCALL3(set_pmd, pmdp, pmdval.pmd, pmdval.pmd >> 32);
+}
+
+static inline void set_pud(pud_t *pudp, pud_t pudval)
+{
+	PVOP_VCALL3(set_pud, pudp, pudval.pgd.pgd, pudval.pgd.pgd >> 32);
+}
+
+static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+	PVOP_VCALL3(pte_clear, mm, addr, ptep);
+}
+
+static inline void pmd_clear(pmd_t *pmdp)
+{
+	PVOP_VCALL1(pmd_clear, pmdp);
+}
+
+#else  /* !CONFIG_X86_PAE */
+
+static inline pte_t __pte(unsigned long val)
+{
+	return (pte_t) { PVOP_CALL1(unsigned long, make_pte, val) };
+}
+
+static inline pgd_t __pgd(unsigned long val)
+{
+	return (pgd_t) { PVOP_CALL1(unsigned long, make_pgd, val) };
+}
+
+static inline unsigned long pte_val(pte_t x)
+{
+	return PVOP_CALL1(unsigned long, pte_val, x.pte_low);
+}
+
+static inline unsigned long pgd_val(pgd_t x)
+{
+	return PVOP_CALL1(unsigned long, pgd_val, x.pgd);
+}
+
+static inline void set_pte(pte_t *ptep, pte_t pteval)
+{
+	PVOP_VCALL2(set_pte, ptep, pteval.pte_low);
+}
+
+static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+			      pte_t *ptep, pte_t pteval)
+{
+	PVOP_VCALL4(set_pte_at, mm, addr, ptep, pteval.pte_low);
+}
+
+static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
+{
+	PVOP_VCALL2(set_pmd, pmdp, pmdval.pud.pgd.pgd);
+}
+#endif	/* CONFIG_X86_PAE */
+
+#define  __HAVE_ARCH_ENTER_LAZY_CPU_MODE
+static inline void arch_enter_lazy_cpu_mode(void)
+{
+	PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_CPU);
+}
+
+static inline void arch_leave_lazy_cpu_mode(void)
+{
+	PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
+}
+
+static inline void arch_flush_lazy_cpu_mode(void)
+{
+	PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
+}
+
+
+#define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+static inline void arch_enter_lazy_mmu_mode(void)
+{
+	PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_MMU);
+}
+
+static inline void arch_leave_lazy_mmu_mode(void)
+{
+	PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
+}
+
+static inline void arch_flush_lazy_mmu_mode(void)
+{
+	PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
+}
+
+void _paravirt_nop(void);
+#define paravirt_nop	((void *)_paravirt_nop)
+
+/* These all sit in the .parainstructions section to tell us what to patch. */
+struct paravirt_patch_site {
+	u8 *instr; 		/* original instructions */
+	u8 instrtype;		/* type of this instruction */
+	u8 len;			/* length of original instruction */
+	u16 clobbers;		/* what registers you may clobber */
+};
+
+extern struct paravirt_patch_site __parainstructions[],
+	__parainstructions_end[];
+
+static inline unsigned long __raw_local_save_flags(void)
+{
+	unsigned long f;
+
+	asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
+				  PARAVIRT_CALL
+				  "popl %%edx; popl %%ecx")
+		     : "=a"(f)
+		     : paravirt_type(save_fl),
+		       paravirt_clobber(CLBR_EAX)
+		     : "memory", "cc");
+	return f;
+}
+
+static inline void raw_local_irq_restore(unsigned long f)
+{
+	asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
+				  PARAVIRT_CALL
+				  "popl %%edx; popl %%ecx")
+		     : "=a"(f)
+		     : "0"(f),
+		       paravirt_type(restore_fl),
+		       paravirt_clobber(CLBR_EAX)
+		     : "memory", "cc");
+}
+
+static inline void raw_local_irq_disable(void)
+{
+	asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
+				  PARAVIRT_CALL
+				  "popl %%edx; popl %%ecx")
+		     :
+		     : paravirt_type(irq_disable),
+		       paravirt_clobber(CLBR_EAX)
+		     : "memory", "eax", "cc");
+}
+
+static inline void raw_local_irq_enable(void)
+{
+	asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
+				  PARAVIRT_CALL
+				  "popl %%edx; popl %%ecx")
+		     :
+		     : paravirt_type(irq_enable),
+		       paravirt_clobber(CLBR_EAX)
+		     : "memory", "eax", "cc");
+}
+
+static inline unsigned long __raw_local_irq_save(void)
+{
+	unsigned long f;
+
+	f = __raw_local_save_flags();
+	raw_local_irq_disable();
+	return f;
+}
+
+#define CLI_STRING							\
+	_paravirt_alt("pushl %%ecx; pushl %%edx;"			\
+		      "call *paravirt_ops+%c[paravirt_cli_type]*4;"	\
+		      "popl %%edx; popl %%ecx",				\
+		      "%c[paravirt_cli_type]", "%c[paravirt_clobber]")
+
+#define STI_STRING							\
+	_paravirt_alt("pushl %%ecx; pushl %%edx;"			\
+		      "call *paravirt_ops+%c[paravirt_sti_type]*4;"	\
+		      "popl %%edx; popl %%ecx",				\
+		      "%c[paravirt_sti_type]", "%c[paravirt_clobber]")
+
+#define CLI_STI_CLOBBERS , "%eax"
+#define CLI_STI_INPUT_ARGS						\
+	,								\
+	[paravirt_cli_type] "i" (PARAVIRT_PATCH(irq_disable)),		\
+	[paravirt_sti_type] "i" (PARAVIRT_PATCH(irq_enable)),		\
+	paravirt_clobber(CLBR_EAX)
+
+/* Make sure as little as possible of this mess escapes. */
+#undef PARAVIRT_CALL
+#undef __PVOP_CALL
+#undef __PVOP_VCALL
+#undef PVOP_VCALL0
+#undef PVOP_CALL0
+#undef PVOP_VCALL1
+#undef PVOP_CALL1
+#undef PVOP_VCALL2
+#undef PVOP_CALL2
+#undef PVOP_VCALL3
+#undef PVOP_CALL3
+#undef PVOP_VCALL4
+#undef PVOP_CALL4
+
+#else  /* __ASSEMBLY__ */
+
+#define PARA_PATCH(off)	((off) / 4)
+
+#define PARA_SITE(ptype, clobbers, ops)		\
+771:;						\
+	ops;					\
+772:;						\
+	.pushsection .parainstructions,"a";	\
+	 .long 771b;				\
+	 .byte ptype;				\
+	 .byte 772b-771b;			\
+	 .short clobbers;			\
+	.popsection
+
+#define INTERRUPT_RETURN					\
+	PARA_SITE(PARA_PATCH(PARAVIRT_iret), CLBR_NONE,		\
+		  jmp *%cs:paravirt_ops+PARAVIRT_iret)
+
+#define DISABLE_INTERRUPTS(clobbers)					\
+	PARA_SITE(PARA_PATCH(PARAVIRT_irq_disable), clobbers,		\
+		  pushl %eax; pushl %ecx; pushl %edx;			\
+		  call *%cs:paravirt_ops+PARAVIRT_irq_disable;		\
+		  popl %edx; popl %ecx; popl %eax)			\
+
+#define ENABLE_INTERRUPTS(clobbers)					\
+	PARA_SITE(PARA_PATCH(PARAVIRT_irq_enable), clobbers,		\
+		  pushl %eax; pushl %ecx; pushl %edx;			\
+		  call *%cs:paravirt_ops+PARAVIRT_irq_enable;		\
+		  popl %edx; popl %ecx; popl %eax)
+
+#define ENABLE_INTERRUPTS_SYSEXIT					\
+	PARA_SITE(PARA_PATCH(PARAVIRT_irq_enable_sysexit), CLBR_NONE,	\
+		  jmp *%cs:paravirt_ops+PARAVIRT_irq_enable_sysexit)
+
+#define GET_CR0_INTO_EAX			\
+	push %ecx; push %edx;			\
+	call *paravirt_ops+PARAVIRT_read_cr0;	\
+	pop %edx; pop %ecx
+
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_PARAVIRT */
+#endif	/* __ASM_PARAVIRT_H */