d343041caa
Introduce explicit abstractions for different mapping types, handling the instantiation, forking, pagefaults and freeing of anonymous memory, direct physical mappings, shared memory and physically contiguous anonymous memory as separate types, making region.c more generic. Also some other genericification like merging the 3 munmap cases into one. COW and SMAP safemap code is still implicit in region.c.
27 lines
552 B
C
27 lines
552 B
C
#ifndef PHYS_REGION_H
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#define PHYS_REGION_H 1
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#include <stddef.h>
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#include "memtype.h"
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typedef struct phys_region {
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struct phys_block *ph;
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struct vir_region *parent; /* vir_region or NULL if yielded */
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vir_bytes offset; /* offset from start of vir region */
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#if SANITYCHECKS
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int written; /* written to pagetable */
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#endif
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mem_type_t *memtype;
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/* list of phys_regions that reference the same phys_block */
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struct phys_region *next_ph_list;
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/* AVL fields */
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struct phys_region *less, *greater;
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int factor;
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} phys_region_t;
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#endif
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