3121eec6bd
. map kernel in non-user . don't map in first pages of kernel code and data if possible these first pages could actually be freed but as the kernel isn't allowed to touch them either we can't reuse them until VM has totally taken over page table management and kernel doesn't rely on identity mapping any more.
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
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#define NO_MEM ((phys_clicks) 0) /* returned by alloc_mem() with mem is up */
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/* Memory flags to pt_allocmap() and alloc_mem(). */
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#define PAF_CLEAR 0x01 /* Clear physical memory. */
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#define PAF_CONTIG 0x02 /* Physically contiguous. */
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/* special value for v in pt_allocmap */
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#define AM_AUTO ((u32_t) -1)
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#define CLICK2ABS(v) ((v) << CLICK_SHIFT)
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#define ABS2CLICK(a) ((a) >> CLICK_SHIFT)
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/* Compile in asserts and custom sanity checks at all? */
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#define SANITYCHECKS 1
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#define VMSTATS 1
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/* If so, this level: */
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#define SCL_NONE 0 /* No sanity checks - vm_assert()s only. */
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#define SCL_TOP 1 /* Main loop and other high-level places. */
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#define SCL_FUNCTIONS 2 /* Function entry/exit. */
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#define SCL_DETAIL 3 /* Detailled steps. */
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#define SCL_MAX 3 /* Highest value. */
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/* Type of page allocations. */
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#define VMP_SPARE 0
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#define VMP_PAGETABLE 1
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#define VMP_PAGEDIR 2
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#define VMP_SLAB 3
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#define VMP_CATEGORIES 4
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/* Flags to pt_writemap(). */
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#define WMF_OVERWRITE 0x01 /* Caller knows map may overwrite. */
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/* Special value of 'what' to map_page_region meaning: unknown. */
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#define MAP_NONE 0xFFFFFFFE
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