LXR linux/arch/x86/kernel/cpu/bugs

   1/*
   2 *  Copyright (C) 1994  Linus Torvalds
   3 *  Copyright (C) 2000  SuSE
   4 */
   5
   6#include <linux/kernel.h>
   7#include <linux/init.h>
   8#include <asm/alternative.h>
   9#include <asm/bugs.h>
  10#include <asm/processor.h>
  11#include <asm/mtrr.h>
  12#include <asm/cacheflush.h>
  13
  14void __init check_bugs(void)
  15{
  16        identify_boot_cpu();
  17#if !defined(CONFIG_SMP)
  18        printk(KERN_INFO "CPU: ");
  19        print_cpu_info(&boot_cpu_data);
  20#endif
  21        alternative_instructions();
  22
  23        /*
  24         * Make sure the first 2MB area is not mapped by huge pages
  25         * There are typically fixed size MTRRs in there and overlapping
  26         * MTRRs into large pages causes slow downs.
  27         *
  28         * Right now we don't do that with gbpages because there seems
  29         * very little benefit for that case.
  30         */
  31        if (!direct_gbpages)
  32                set_memory_4k((unsigned long)__va(0), 1);
  33}
  34