src/servers/vm/vm.h

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#define NO_MEM ((phys_clicks) 0)  /* returned by alloc_mem() with mem is up */

/* Memory flags to pt_allocmap() and alloc_mem(). */
#define PAF_CLEAR       0x01    /* Clear physical memory. */
#define PAF_CONTIG      0x02    /* Physically contiguous. */
#define PAF_ALIGN64K    0x04    /* Aligned to 64k boundary. */
#define PAF_LOWER16MB   0x08
#define PAF_LOWER1MB    0x10

/* special value for v in pt_allocmap */
#define AM_AUTO         ((u32_t) -1)

#define CLICK2ABS(v) ((v) << CLICK_SHIFT)
#define ABS2CLICK(a) ((a) >> CLICK_SHIFT)

/* Compile in asserts and custom sanity checks at all? */
#define SANITYCHECKS    0
#define VMSTATS         0

/* How noisy are we supposed to be? */
#define VERBOSE         0

/* Minimum stack region size - 64MB. */
#define MINSTACKREGION  (64*1024*1024)

/* If so, this level: */
#define SCL_NONE        0       /* No sanity checks - vm_assert()s only. */
#define SCL_TOP         1       /* Main loop and other high-level places. */
#define SCL_FUNCTIONS   2       /* Function entry/exit. */
#define SCL_DETAIL      3       /* Detailled steps. */
#define SCL_MAX         3       /* Highest value. */

/* Type of page allocations. */
#define VMP_SPARE       0
#define VMP_PAGETABLE   1
#define VMP_PAGEDIR     2
#define VMP_SLAB        3
#define VMP_CATEGORIES  4

/* Flags to pt_writemap(). */
#define WMF_OVERWRITE           0x01    /* Caller knows map may overwrite. */
#define WMF_WRITEFLAGSONLY      0x02    /* Copy physaddr and update flags. */
#define WMF_FREE                0x04    /* Free pages overwritten. */
#define WMF_VERIFY              0x08    /* Check pagetable contents. */

#define MAP_NONE        0xFFFFFFFE

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