Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 682 insertions, 0 deletions

diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
new file mode 100644
index 000000000000..be258b0e5a5f
--- /dev/null
+++ b/include/asm-i386/processor.h
@@ -0,0 +1,682 @@
+/*
+ * include/asm-i386/processor.h
+ *
+ * Copyright (C) 1994 Linus Torvalds
+ */
+
+#ifndef __ASM_I386_PROCESSOR_H
+#define __ASM_I386_PROCESSOR_H
+
+#include <asm/vm86.h>
+#include <asm/math_emu.h>
+#include <asm/segment.h>
+#include <asm/page.h>
+#include <asm/types.h>
+#include <asm/sigcontext.h>
+#include <asm/cpufeature.h>
+#include <asm/msr.h>
+#include <asm/system.h>
+#include <linux/cache.h>
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <asm/percpu.h>
+
+/* flag for disabling the tsc */
+extern int tsc_disable;
+
+struct desc_struct {
+        unsigned long a,b;
+};
+
+#define desc_empty(desc) \
+                (!((desc)->a + (desc)->b))
+
+#define desc_equal(desc1, desc2) \
+                (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
+
+/*
+ *  CPU type and hardware bug flags. Kept separately for each CPU.
+ *  Members of this structure are referenced in head.S, so think twice
+ *  before touching them. [mj]
+ */
+
+struct cpuinfo_x86 {
+        __u8    x86;            /* CPU family */
+        __u8    x86_vendor;     /* CPU vendor */
+        __u8    x86_model;
+        __u8    x86_mask;
+        char    wp_works_ok;    /* It doesn't on 386's */
+        char    hlt_works_ok;   /* Problems on some 486Dx4's and old 386's */
+        char    hard_math;
+        char    rfu;
+        int     cpuid_level;    /* Maximum supported CPUID level, -1=no CPUID */
+        unsigned long   x86_capability[NCAPINTS];
+        char    x86_vendor_id[16];
+        char    x86_model_id[64];
+        int     x86_cache_size;  /* in KB - valid for CPUS which support this
+                                    call  */
+        int     x86_cache_alignment;    /* In bytes */
+        int     fdiv_bug;
+        int     f00f_bug;
+        int     coma_bug;
+        unsigned long loops_per_jiffy;
+        unsigned char x86_num_cores;
+} __attribute__((__aligned__(SMP_CACHE_BYTES)));
+
+#define X86_VENDOR_INTEL 0
+#define X86_VENDOR_CYRIX 1
+#define X86_VENDOR_AMD 2
+#define X86_VENDOR_UMC 3
+#define X86_VENDOR_NEXGEN 4
+#define X86_VENDOR_CENTAUR 5
+#define X86_VENDOR_RISE 6
+#define X86_VENDOR_TRANSMETA 7
+#define X86_VENDOR_NSC 8
+#define X86_VENDOR_NUM 9
+#define X86_VENDOR_UNKNOWN 0xff
+
+/*
+ * capabilities of CPUs
+ */
+
+extern struct cpuinfo_x86 boot_cpu_data;
+extern struct cpuinfo_x86 new_cpu_data;
+extern struct tss_struct doublefault_tss;
+DECLARE_PER_CPU(struct tss_struct, init_tss);
+
+#ifdef CONFIG_SMP
+extern struct cpuinfo_x86 cpu_data[];
+#define current_cpu_data cpu_data[smp_processor_id()]
+#else
+#define cpu_data (&boot_cpu_data)
+#define current_cpu_data boot_cpu_data
+#endif
+
+extern  int phys_proc_id[NR_CPUS];
+extern char ignore_fpu_irq;
+
+extern void identify_cpu(struct cpuinfo_x86 *);
+extern void print_cpu_info(struct cpuinfo_x86 *);
+extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+
+#ifdef CONFIG_X86_HT
+extern void detect_ht(struct cpuinfo_x86 *c);
+#else
+static inline void detect_ht(struct cpuinfo_x86 *c) {}
+#endif
+
+/*
+ * EFLAGS bits
+ */
+#define X86_EFLAGS_CF   0x00000001 /* Carry Flag */
+#define X86_EFLAGS_PF   0x00000004 /* Parity Flag */
+#define X86_EFLAGS_AF   0x00000010 /* Auxillary carry Flag */
+#define X86_EFLAGS_ZF   0x00000040 /* Zero Flag */
+#define X86_EFLAGS_SF   0x00000080 /* Sign Flag */
+#define X86_EFLAGS_TF   0x00000100 /* Trap Flag */
+#define X86_EFLAGS_IF   0x00000200 /* Interrupt Flag */
+#define X86_EFLAGS_DF   0x00000400 /* Direction Flag */
+#define X86_EFLAGS_OF   0x00000800 /* Overflow Flag */
+#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
+#define X86_EFLAGS_NT   0x00004000 /* Nested Task */
+#define X86_EFLAGS_RF   0x00010000 /* Resume Flag */
+#define X86_EFLAGS_VM   0x00020000 /* Virtual Mode */
+#define X86_EFLAGS_AC   0x00040000 /* Alignment Check */
+#define X86_EFLAGS_VIF  0x00080000 /* Virtual Interrupt Flag */
+#define X86_EFLAGS_VIP  0x00100000 /* Virtual Interrupt Pending */
+#define X86_EFLAGS_ID   0x00200000 /* CPUID detection flag */
+
+/*
+ * Generic CPUID function
+ * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
+ * resulting in stale register contents being returned.
+ */
+static inline void cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
+{
+        __asm__("cpuid"
+                : "=a" (*eax),
+                  "=b" (*ebx),
+                  "=c" (*ecx),
+                  "=d" (*edx)
+                : "0" (op), "c"(0));
+}
+
+/* Some CPUID calls want 'count' to be placed in ecx */
+static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
+                int *edx)
+{
+        __asm__("cpuid"
+                : "=a" (*eax),
+                  "=b" (*ebx),
+                  "=c" (*ecx),
+                  "=d" (*edx)
+                : "0" (op), "c" (count));
+}
+
+/*
+ * CPUID functions returning a single datum
+ */
+static inline unsigned int cpuid_eax(unsigned int op)
+{
+        unsigned int eax;
+
+        __asm__("cpuid"
+                : "=a" (eax)
+                : "0" (op)
+                : "bx", "cx", "dx");
+        return eax;
+}
+static inline unsigned int cpuid_ebx(unsigned int op)
+{
+        unsigned int eax, ebx;
+
+        __asm__("cpuid"
+                : "=a" (eax), "=b" (ebx)
+                : "0" (op)
+                : "cx", "dx" );
+        return ebx;
+}
+static inline unsigned int cpuid_ecx(unsigned int op)
+{
+        unsigned int eax, ecx;
+
+        __asm__("cpuid"
+                : "=a" (eax), "=c" (ecx)
+                : "0" (op)
+                : "bx", "dx" );
+        return ecx;
+}
+static inline unsigned int cpuid_edx(unsigned int op)
+{
+        unsigned int eax, edx;
+
+        __asm__("cpuid"
+                : "=a" (eax), "=d" (edx)
+                : "0" (op)
+                : "bx", "cx");
+        return edx;
+}
+
+#define load_cr3(pgdir) \
+        asm volatile("movl %0,%%cr3": :"r" (__pa(pgdir)))
+
+
+/*
+ * Intel CPU features in CR4
+ */
+#define X86_CR4_VME             0x0001  /* enable vm86 extensions */
+#define X86_CR4_PVI             0x0002  /* virtual interrupts flag enable */
+#define X86_CR4_TSD             0x0004  /* disable time stamp at ipl 3 */
+#define X86_CR4_DE              0x0008  /* enable debugging extensions */
+#define X86_CR4_PSE             0x0010  /* enable page size extensions */
+#define X86_CR4_PAE             0x0020  /* enable physical address extensions */
+#define X86_CR4_MCE             0x0040  /* Machine check enable */
+#define X86_CR4_PGE             0x0080  /* enable global pages */
+#define X86_CR4_PCE             0x0100  /* enable performance counters at ipl 3 */
+#define X86_CR4_OSFXSR          0x0200  /* enable fast FPU save and restore */
+#define X86_CR4_OSXMMEXCPT      0x0400  /* enable unmasked SSE exceptions */
+
+/*
+ * Save the cr4 feature set we're using (ie
+ * Pentium 4MB enable and PPro Global page
+ * enable), so that any CPU's that boot up
+ * after us can get the correct flags.
+ */
+extern unsigned long mmu_cr4_features;
+
+static inline void set_in_cr4 (unsigned long mask)
+{
+        mmu_cr4_features |= mask;
+        __asm__("movl %%cr4,%%eax\n\t"
+                "orl %0,%%eax\n\t"
+                "movl %%eax,%%cr4\n"
+                : : "irg" (mask)
+                :"ax");
+}
+
+static inline void clear_in_cr4 (unsigned long mask)
+{
+        mmu_cr4_features &= ~mask;
+        __asm__("movl %%cr4,%%eax\n\t"
+                "andl %0,%%eax\n\t"
+                "movl %%eax,%%cr4\n"
+                : : "irg" (~mask)
+                :"ax");
+}
+
+/*
+ *      NSC/Cyrix CPU configuration register indexes
+ */
+
+#define CX86_PCR0 0x20
+#define CX86_GCR  0xb8
+#define CX86_CCR0 0xc0
+#define CX86_CCR1 0xc1
+#define CX86_CCR2 0xc2
+#define CX86_CCR3 0xc3
+#define CX86_CCR4 0xe8
+#define CX86_CCR5 0xe9
+#define CX86_CCR6 0xea
+#define CX86_CCR7 0xeb
+#define CX86_PCR1 0xf0
+#define CX86_DIR0 0xfe
+#define CX86_DIR1 0xff
+#define CX86_ARR_BASE 0xc4
+#define CX86_RCR_BASE 0xdc
+
+/*
+ *      NSC/Cyrix CPU indexed register access macros
+ */
+
+#define getCx86(reg) ({ outb((reg), 0x22); inb(0x23); })
+
+#define setCx86(reg, data) do { \
+        outb((reg), 0x22); \
+        outb((data), 0x23); \
+} while (0)
+
+static inline void __monitor(const void *eax, unsigned long ecx,
+                unsigned long edx)
+{
+        /* "monitor %eax,%ecx,%edx;" */
+        asm volatile(
+                ".byte 0x0f,0x01,0xc8;"
+                : :"a" (eax), "c" (ecx), "d"(edx));
+}
+
+static inline void __mwait(unsigned long eax, unsigned long ecx)
+{
+        /* "mwait %eax,%ecx;" */
+        asm volatile(
+                ".byte 0x0f,0x01,0xc9;"
+                : :"a" (eax), "c" (ecx));
+}
+
+/* from system description table in BIOS.  Mostly for MCA use, but
+others may find it useful. */
+extern unsigned int machine_id;
+extern unsigned int machine_submodel_id;
+extern unsigned int BIOS_revision;
+extern unsigned int mca_pentium_flag;
+
+/* Boot loader type from the setup header */
+extern int bootloader_type;
+
+/*
+ * User space process size: 3GB (default).
+ */
+#define TASK_SIZE       (PAGE_OFFSET)
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE      (PAGE_ALIGN(TASK_SIZE / 3))
+
+#define HAVE_ARCH_PICK_MMAP_LAYOUT
+
+/*
+ * Size of io_bitmap.
+ */
+#define IO_BITMAP_BITS  65536
+#define IO_BITMAP_BYTES (IO_BITMAP_BITS/8)
+#define IO_BITMAP_LONGS (IO_BITMAP_BYTES/sizeof(long))
+#define IO_BITMAP_OFFSET offsetof(struct tss_struct,io_bitmap)
+#define INVALID_IO_BITMAP_OFFSET 0x8000
+#define INVALID_IO_BITMAP_OFFSET_LAZY 0x9000
+
+struct i387_fsave_struct {
+        long    cwd;
+        long    swd;
+        long    twd;
+        long    fip;
+        long    fcs;
+        long    foo;
+        long    fos;
+        long    st_space[20];   /* 8*10 bytes for each FP-reg = 80 bytes */
+        long    status;         /* software status information */
+};
+
+struct i387_fxsave_struct {
+        unsigned short  cwd;
+        unsigned short  swd;
+        unsigned short  twd;
+        unsigned short  fop;
+        long    fip;
+        long    fcs;
+        long    foo;
+        long    fos;
+        long    mxcsr;
+        long    mxcsr_mask;
+        long    st_space[32];   /* 8*16 bytes for each FP-reg = 128 bytes */
+        long    xmm_space[32];  /* 8*16 bytes for each XMM-reg = 128 bytes */
+        long    padding[56];
+} __attribute__ ((aligned (16)));
+
+struct i387_soft_struct {
+        long    cwd;
+        long    swd;
+        long    twd;
+        long    fip;
+        long    fcs;
+        long    foo;
+        long    fos;
+        long    st_space[20];   /* 8*10 bytes for each FP-reg = 80 bytes */
+        unsigned char   ftop, changed, lookahead, no_update, rm, alimit;
+        struct info     *info;
+        unsigned long   entry_eip;
+};
+
+union i387_union {
+        struct i387_fsave_struct        fsave;
+        struct i387_fxsave_struct       fxsave;
+        struct i387_soft_struct soft;
+};
+
+typedef struct {
+        unsigned long seg;
+} mm_segment_t;
+
+struct thread_struct;
+
+struct tss_struct {
+        unsigned short  back_link,__blh;
+        unsigned long   esp0;
+        unsigned short  ss0,__ss0h;
+        unsigned long   esp1;
+        unsigned short  ss1,__ss1h;     /* ss1 is used to cache MSR_IA32_SYSENTER_CS */
+        unsigned long   esp2;
+        unsigned short  ss2,__ss2h;
+        unsigned long   __cr3;
+        unsigned long   eip;
+        unsigned long   eflags;
+        unsigned long   eax,ecx,edx,ebx;
+        unsigned long   esp;
+        unsigned long   ebp;
+        unsigned long   esi;
+        unsigned long   edi;
+        unsigned short  es, __esh;
+        unsigned short  cs, __csh;
+        unsigned short  ss, __ssh;
+        unsigned short  ds, __dsh;
+        unsigned short  fs, __fsh;
+        unsigned short  gs, __gsh;
+        unsigned short  ldt, __ldth;
+        unsigned short  trace, io_bitmap_base;
+        /*
+         * The extra 1 is there because the CPU will access an
+         * additional byte beyond the end of the IO permission
+         * bitmap. The extra byte must be all 1 bits, and must
+         * be within the limit.
+         */
+        unsigned long   io_bitmap[IO_BITMAP_LONGS + 1];
+        /*
+         * Cache the current maximum and the last task that used the bitmap:
+         */
+        unsigned long io_bitmap_max;
+        struct thread_struct *io_bitmap_owner;
+        /*
+         * pads the TSS to be cacheline-aligned (size is 0x100)
+         */
+        unsigned long __cacheline_filler[35];
+        /*
+         * .. and then another 0x100 bytes for emergency kernel stack
+         */
+        unsigned long stack[64];
+} __attribute__((packed));
+
+#define ARCH_MIN_TASKALIGN      16
+
+struct thread_struct {
+/* cached TLS descriptors. */
+        struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
+        unsigned long   esp0;
+        unsigned long   sysenter_cs;
+        unsigned long   eip;
+        unsigned long   esp;
+        unsigned long   fs;
+        unsigned long   gs;
+/* Hardware debugging registers */
+        unsigned long   debugreg[8];  /* %%db0-7 debug registers */
+/* fault info */
+        unsigned long   cr2, trap_no, error_code;
+/* floating point info */
+        union i387_union        i387;
+/* virtual 86 mode info */
+        struct vm86_struct __user * vm86_info;
+        unsigned long           screen_bitmap;
+        unsigned long           v86flags, v86mask, saved_esp0;
+        unsigned int            saved_fs, saved_gs;
+/* IO permissions */
+        unsigned long   *io_bitmap_ptr;
+/* max allowed port in the bitmap, in bytes: */
+        unsigned long   io_bitmap_max;
+};
+
+#define INIT_THREAD  {                                                  \
+        .vm86_info = NULL,                                              \
+        .sysenter_cs = __KERNEL_CS,                                     \
+        .io_bitmap_ptr = NULL,                                          \
+}
+
+/*
+ * Note that the .io_bitmap member must be extra-big. This is because
+ * the CPU will access an additional byte beyond the end of the IO
+ * permission bitmap. The extra byte must be all 1 bits, and must
+ * be within the limit.
+ */
+#define INIT_TSS  {                                                     \
+        .esp0           = sizeof(init_stack) + (long)&init_stack,       \
+        .ss0            = __KERNEL_DS,                                  \
+        .ss1            = __KERNEL_CS,                                  \
+        .ldt            = GDT_ENTRY_LDT,                                \
+        .io_bitmap_base = INVALID_IO_BITMAP_OFFSET,                     \
+        .io_bitmap      = { [ 0 ... IO_BITMAP_LONGS] = ~0 },            \
+}
+
+static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+{
+        tss->esp0 = thread->esp0;
+        /* This can only happen when SEP is enabled, no need to test "SEP"arately */
+        if (unlikely(tss->ss1 != thread->sysenter_cs)) {
+                tss->ss1 = thread->sysenter_cs;
+                wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
+        }
+}
+
+#define start_thread(regs, new_eip, new_esp) do {               \
+        __asm__("movl %0,%%fs ; movl %0,%%gs": :"r" (0));       \
+        set_fs(USER_DS);                                        \
+        regs->xds = __USER_DS;                                  \
+        regs->xes = __USER_DS;                                  \
+        regs->xss = __USER_DS;                                  \
+        regs->xcs = __USER_CS;                                  \
+        regs->eip = new_eip;                                    \
+        regs->esp = new_esp;                                    \
+} while (0)
+
+/* Forward declaration, a strange C thing */
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+extern void prepare_to_copy(struct task_struct *tsk);
+
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+void show_trace(struct task_struct *task, unsigned long *stack);
+
+unsigned long get_wchan(struct task_struct *p);
+
+#define THREAD_SIZE_LONGS      (THREAD_SIZE/sizeof(unsigned long))
+#define KSTK_TOP(info)                                                 \
+({                                                                     \
+       unsigned long *__ptr = (unsigned long *)(info);                 \
+       (unsigned long)(&__ptr[THREAD_SIZE_LONGS]);                     \
+})
+
+#define task_pt_regs(task)                                             \
+({                                                                     \
+       struct pt_regs *__regs__;                                       \
+       __regs__ = (struct pt_regs *)KSTK_TOP((task)->thread_info);     \
+       __regs__ - 1;                                                   \
+})
+
+#define KSTK_EIP(task) (task_pt_regs(task)->eip)
+#define KSTK_ESP(task) (task_pt_regs(task)->esp)
+
+
+struct microcode_header {
+        unsigned int hdrver;
+        unsigned int rev;
+        unsigned int date;
+        unsigned int sig;
+        unsigned int cksum;
+        unsigned int ldrver;
+        unsigned int pf;
+        unsigned int datasize;
+        unsigned int totalsize;
+        unsigned int reserved[3];
+};
+
+struct microcode {
+        struct microcode_header hdr;
+        unsigned int bits[0];
+};
+
+typedef struct microcode microcode_t;
+typedef struct microcode_header microcode_header_t;
+
+/* microcode format is extended from prescott processors */
+struct extended_signature {
+        unsigned int sig;
+        unsigned int pf;
+        unsigned int cksum;
+};
+
+struct extended_sigtable {
+        unsigned int count;
+        unsigned int cksum;
+        unsigned int reserved[3];
+        struct extended_signature sigs[0];
+};
+/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
+#define MICROCODE_IOCFREE       _IO('6',0)
+
+/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
+static inline void rep_nop(void)
+{
+        __asm__ __volatile__("rep;nop": : :"memory");
+}
+
+#define cpu_relax()     rep_nop()
+
+/* generic versions from gas */
+#define GENERIC_NOP1    ".byte 0x90\n"
+#define GENERIC_NOP2            ".byte 0x89,0xf6\n"
+#define GENERIC_NOP3        ".byte 0x8d,0x76,0x00\n"
+#define GENERIC_NOP4        ".byte 0x8d,0x74,0x26,0x00\n"
+#define GENERIC_NOP5        GENERIC_NOP1 GENERIC_NOP4
+#define GENERIC_NOP6    ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n"
+#define GENERIC_NOP7    ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n"
+#define GENERIC_NOP8    GENERIC_NOP1 GENERIC_NOP7
+
+/* Opteron nops */
+#define K8_NOP1 GENERIC_NOP1
+#define K8_NOP2 ".byte 0x66,0x90\n" 
+#define K8_NOP3 ".byte 0x66,0x66,0x90\n" 
+#define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n" 
+#define K8_NOP5 K8_NOP3 K8_NOP2 
+#define K8_NOP6 K8_NOP3 K8_NOP3
+#define K8_NOP7 K8_NOP4 K8_NOP3
+#define K8_NOP8 K8_NOP4 K8_NOP4
+
+/* K7 nops */
+/* uses eax dependencies (arbitary choice) */
+#define K7_NOP1  GENERIC_NOP1
+#define K7_NOP2 ".byte 0x8b,0xc0\n" 
+#define K7_NOP3 ".byte 0x8d,0x04,0x20\n"
+#define K7_NOP4 ".byte 0x8d,0x44,0x20,0x00\n"
+#define K7_NOP5 K7_NOP4 ASM_NOP1
+#define K7_NOP6 ".byte 0x8d,0x80,0,0,0,0\n"
+#define K7_NOP7        ".byte 0x8D,0x04,0x05,0,0,0,0\n"
+#define K7_NOP8        K7_NOP7 ASM_NOP1
+
+#ifdef CONFIG_MK8
+#define ASM_NOP1 K8_NOP1
+#define ASM_NOP2 K8_NOP2
+#define ASM_NOP3 K8_NOP3
+#define ASM_NOP4 K8_NOP4
+#define ASM_NOP5 K8_NOP5
+#define ASM_NOP6 K8_NOP6
+#define ASM_NOP7 K8_NOP7
+#define ASM_NOP8 K8_NOP8
+#elif defined(CONFIG_MK7)
+#define ASM_NOP1 K7_NOP1
+#define ASM_NOP2 K7_NOP2
+#define ASM_NOP3 K7_NOP3
+#define ASM_NOP4 K7_NOP4
+#define ASM_NOP5 K7_NOP5
+#define ASM_NOP6 K7_NOP6
+#define ASM_NOP7 K7_NOP7
+#define ASM_NOP8 K7_NOP8
+#else
+#define ASM_NOP1 GENERIC_NOP1
+#define ASM_NOP2 GENERIC_NOP2
+#define ASM_NOP3 GENERIC_NOP3
+#define ASM_NOP4 GENERIC_NOP4
+#define ASM_NOP5 GENERIC_NOP5
+#define ASM_NOP6 GENERIC_NOP6
+#define ASM_NOP7 GENERIC_NOP7
+#define ASM_NOP8 GENERIC_NOP8
+#endif
+
+#define ASM_NOP_MAX 8
+
+/* Prefetch instructions for Pentium III and AMD Athlon */
+/* It's not worth to care about 3dnow! prefetches for the K6
+   because they are microcoded there and very slow.
+   However we don't do prefetches for pre XP Athlons currently
+   That should be fixed. */
+#define ARCH_HAS_PREFETCH
+extern inline void prefetch(const void *x)
+{
+        alternative_input(ASM_NOP4,
+                          "prefetchnta (%1)",
+                          X86_FEATURE_XMM,
+                          "r" (x));
+}
+
+#define ARCH_HAS_PREFETCH
+#define ARCH_HAS_PREFETCHW
+#define ARCH_HAS_SPINLOCK_PREFETCH
+
+/* 3dnow! prefetch to get an exclusive cache line. Useful for 
+   spinlocks to avoid one state transition in the cache coherency protocol. */
+extern inline void prefetchw(const void *x)
+{
+        alternative_input(ASM_NOP4,
+                          "prefetchw (%1)",
+                          X86_FEATURE_3DNOW,
+                          "r" (x));
+}
+#define spin_lock_prefetch(x)   prefetchw(x)
+
+extern void select_idle_routine(const struct cpuinfo_x86 *c);
+
+#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
+
+extern unsigned long boot_option_idle_override;
+
+#endif /* __ASM_I386_PROCESSOR_H */