1 files changed, 0 insertions, 192 deletions

diff --git a/arch/i386/kernel/cpu/bugs.c b/arch/i386/kernel/cpu/bugs.c
deleted file mode 100644
index 59266f03d1cd..000000000000
--- a/arch/i386/kernel/cpu/bugs.c
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- *  arch/i386/cpu/bugs.c
- *
- *  Copyright (C) 1994  Linus Torvalds
- *
- *  Cyrix stuff, June 1998 by:
- *      - Rafael R. Reilova (moved everything from head.S),
- *        <rreilova@ececs.uc.edu>
- *      - Channing Corn (tests & fixes),
- *      - Andrew D. Balsa (code cleanup).
- */
-#include <linux/init.h>
-#include <linux/utsname.h>
-#include <asm/bugs.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/msr.h>
-#include <asm/paravirt.h>
-#include <asm/alternative.h>
-
-static int __init no_halt(char *s)
-{
-        boot_cpu_data.hlt_works_ok = 0;
-        return 1;
-}
-
-__setup("no-hlt", no_halt);
-
-static int __init mca_pentium(char *s)
-{
-        mca_pentium_flag = 1;
-        return 1;
-}
-
-__setup("mca-pentium", mca_pentium);
-
-static int __init no_387(char *s)
-{
-        boot_cpu_data.hard_math = 0;
-        write_cr0(0xE | read_cr0());
-        return 1;
-}
-
-__setup("no387", no_387);
-
-static double __initdata x = 4195835.0;
-static double __initdata y = 3145727.0;
-
-/*
- * This used to check for exceptions..
- * However, it turns out that to support that,
- * the XMM trap handlers basically had to
- * be buggy. So let's have a correct XMM trap
- * handler, and forget about printing out
- * some status at boot.
- *
- * We should really only care about bugs here
- * anyway. Not features.
- */
-static void __init check_fpu(void)
-{
-        if (!boot_cpu_data.hard_math) {
-#ifndef CONFIG_MATH_EMULATION
-                printk(KERN_EMERG "No coprocessor found and no math emulation present.\n");
-                printk(KERN_EMERG "Giving up.\n");
-                for (;;) ;
-#endif
-                return;
-        }
-
-/* trap_init() enabled FXSR and company _before_ testing for FP problems here. */
-        /* Test for the divl bug.. */
-        __asm__("fninit\n\t"
-                "fldl %1\n\t"
-                "fdivl %2\n\t"
-                "fmull %2\n\t"
-                "fldl %1\n\t"
-                "fsubp %%st,%%st(1)\n\t"
-                "fistpl %0\n\t"
-                "fwait\n\t"
-                "fninit"
-                : "=m" (*&boot_cpu_data.fdiv_bug)
-                : "m" (*&x), "m" (*&y));
-        if (boot_cpu_data.fdiv_bug)
-                printk("Hmm, FPU with FDIV bug.\n");
-}
-
-static void __init check_hlt(void)
-{
-        if (paravirt_enabled())
-                return;
-
-        printk(KERN_INFO "Checking 'hlt' instruction... ");
-        if (!boot_cpu_data.hlt_works_ok) {
-                printk("disabled\n");
-                return;
-        }
-        halt();
-        halt();
-        halt();
-        halt();
-        printk("OK.\n");
-}
-
-/*
- *      Most 386 processors have a bug where a POPAD can lock the
- *      machine even from user space.
- */
-
-static void __init check_popad(void)
-{
-#ifndef CONFIG_X86_POPAD_OK
-        int res, inp = (int) &res;
-
-        printk(KERN_INFO "Checking for popad bug... ");
-        __asm__ __volatile__(
-          "movl $12345678,%%eax; movl $0,%%edi; pusha; popa; movl (%%edx,%%edi),%%ecx "
-          : "=&a" (res)
-          : "d" (inp)
-          : "ecx", "edi" );
-        /* If this fails, it means that any user program may lock the CPU hard. Too bad. */
-        if (res != 12345678) printk( "Buggy.\n" );
-                        else printk( "OK.\n" );
-#endif
-}
-
-/*
- * Check whether we are able to run this kernel safely on SMP.
- *
- * - In order to run on a i386, we need to be compiled for i386
- *   (for due to lack of "invlpg" and working WP on a i386)
- * - In order to run on anything without a TSC, we need to be
- *   compiled for a i486.
- * - In order to support the local APIC on a buggy Pentium machine,
- *   we need to be compiled with CONFIG_X86_GOOD_APIC disabled,
- *   which happens implicitly if compiled for a Pentium or lower
- *   (unless an advanced selection of CPU features is used) as an
- *   otherwise config implies a properly working local APIC without
- *   the need to do extra reads from the APIC.
-*/
-
-static void __init check_config(void)
-{
-/*
- * We'd better not be a i386 if we're configured to use some
- * i486+ only features! (WP works in supervisor mode and the
- * new "invlpg" and "bswap" instructions)
- */
-#if defined(CONFIG_X86_WP_WORKS_OK) || defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_BSWAP)
-        if (boot_cpu_data.x86 == 3)
-                panic("Kernel requires i486+ for 'invlpg' and other features");
-#endif
-
-/*
- * If we configured ourselves for a TSC, we'd better have one!
- */
-#ifdef CONFIG_X86_TSC
-        if (!cpu_has_tsc && !tsc_disable)
-                panic("Kernel compiled for Pentium+, requires TSC feature!");
-#endif
-
-/*
- * If we were told we had a good local APIC, check for buggy Pentia,
- * i.e. all B steppings and the C2 stepping of P54C when using their
- * integrated APIC (see 11AP erratum in "Pentium Processor
- * Specification Update").
- */
-#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_GOOD_APIC)
-        if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL
-            && cpu_has_apic
-            && boot_cpu_data.x86 == 5
-            && boot_cpu_data.x86_model == 2
-            && (boot_cpu_data.x86_mask < 6 || boot_cpu_data.x86_mask == 11))
-                panic("Kernel compiled for PMMX+, assumes a local APIC without the read-before-write bug!");
-#endif
-}
-
-
-void __init check_bugs(void)
-{
-        identify_boot_cpu();
-#ifndef CONFIG_SMP
-        printk("CPU: ");
-        print_cpu_info(&boot_cpu_data);
-#endif
-        check_config();
-        check_fpu();
-        check_hlt();
-        check_popad();
-        init_utsname()->machine[1] = '0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
-        alternative_instructions();
-}