include/asm-i386/kexec.h

   1 #ifndef _I386_KEXEC_H
   2 #define _I386_KEXEC_H
   3
   4 #include <asm/fixmap.h>
   5
   6 /*
   7  * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
   8  * I.e. Maximum page that is mapped directly into kernel memory,
   9  * and kmap is not required.
  10  *
  11  * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
  12  * calculation for the amount of memory directly mappable into the
  13  * kernel memory space.
  14  */
  15
  16 /* Maximum physical address we can use pages from */
  17 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
  18 /* Maximum address we can reach in physical address mode */
  19 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  20 /* Maximum address we can use for the control code buffer */
  21 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
  22
  23 #define KEXEC_CONTROL_CODE_SIZE 4096
  24
  25 /* The native architecture */
  26 #define KEXEC_ARCH KEXEC_ARCH_386
  27
  28 #define MAX_NOTE_BYTES 1024
  29 typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
  30
  31 extern note_buf_t crash_notes[];
  32
  33 #endif /* _I386_KEXEC_H */