mango/arch/user/include/socks/machine/vm.h

#ifndef SOCKS_USER_VM_H_
#define SOCKS_USER_VM_H_

#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

extern uintptr_t __pagemap_base(void);
extern uintptr_t __pagemap_limit(void);

/* kernel higher-half base virtual address. */
#define VM_KERNEL_VOFFSET (__pagemap_base())

/* direct page-mapping region.
   NOTE that these are the maximum bounds of this region.
   the actual size depends on the amount of physical
   memory present. */
#define VM_PAGEMAP_BASE   (__pagemap_base())
#define VM_PAGEMAP_LIMIT  (__pagemap_limit())

#define VM_PAGE_SIZE  0x1000
#define VM_PAGE_MASK  (VM_PAGE_SIZE-1)
#define VM_PAGE_SHIFT 12

#define VM_PAGE_MIN_ORDER VM_PAGE_4K
#define VM_PAGE_MAX_ORDER VM_PAGE_8M

#ifdef __cplusplus
}
#endif

#endif