include/asm-xen/asm-i386/mach-xen/setup_arch_post.h

   1 /**
   2  * machine_specific_memory_setup - Hook for machine specific memory setup.
   3  *
   4  * Description:
   5  *      This is included late in kernel/setup.c so that it can make
   6  *      use of all of the static functions.
   7  **/
   8
   9 static char * __init machine_specific_memory_setup(void)
  10 {
  11         char *who;
  12         unsigned long start_pfn, max_pfn;
  13
  14         who = "Xen";
  15
  16         start_pfn = 0;
  17         max_pfn = xen_start_info.nr_pages;
  18
  19         e820.nr_map = 0;
  20         add_memory_region(PFN_PHYS(start_pfn), PFN_PHYS(max_pfn) - PFN_PHYS(start_pfn), E820_RAM);
  21
  22         return who;
  23 }
  24
  25 void __init machine_specific_modify_cpu_capabilities(struct cpuinfo_x86 *c)
  26 {
  27         clear_bit(X86_FEATURE_VME, c->x86_capability);
  28         clear_bit(X86_FEATURE_DE, c->x86_capability);
  29         clear_bit(X86_FEATURE_PSE, c->x86_capability);
  30         clear_bit(X86_FEATURE_PGE, c->x86_capability);
  31         clear_bit(X86_FEATURE_SEP, c->x86_capability);
  32         if (!(xen_start_info.flags & SIF_PRIVILEGED))
  33                 clear_bit(X86_FEATURE_MTRR, c->x86_capability);
  34 }
  35
  36 extern void hypervisor_callback(void);
  37 extern void failsafe_callback(void);
  38
  39 static void __init machine_specific_arch_setup(void)
  40 {
  41         HYPERVISOR_set_callbacks(
  42             __KERNEL_CS, (unsigned long)hypervisor_callback,
  43             __KERNEL_CS, (unsigned long)failsafe_callback);
  44
  45         machine_specific_modify_cpu_capabilities(&boot_cpu_data);
  46 }