#ifndef __LUNAIX_MM_DEFS_H
#define __LUNAIX_MM_DEFS_H


#include "mempart.h"
#include "pagetable.h"

#define KSTACK_PAGES            3
#define KSTACK_SIZE             (KSTACK_PAGES * PAGE_SIZE)

/*
    Regardless architecture we need to draw the line very carefully, and must 
    take the size of VM into account. In general, we aims to achieve 
    "sufficiently large" of memory for kernel

    In terms of x86_32:
        * #768~1022 PTEs of PD      (0x00000000c0000000, ~1GiB)
    
    In light of upcomming x86_64 support (for Level 4&5 Paging):
        * #510 entry of PML4        (0x0000ff0000000000, ~512GiB)
        * #510 entry of PML5        (0x01fe000000000000, ~256TiB)
*/
// Where the kernel getting re-mapped.
#define KERNEL_RESIDENT         0x0

// Pages reserved for kernel image
#define KEXEC_RSVD              16

#define kernel_addr(addr)       (addr)

#define to_kphysical(k_va)      ((ptr_t)(k_va))
#define to_kvirtual(k_pa)       ((ptr_t)(k_pa))

#endif /* __LUNAIX_MM_DEFS_H */