Ontwerp en bouw een besturingssysteem/Appendix B/Paging

Geen PAE

CR3

31

16

Page-Directory-Table Base Address
bits 31-16

15			12	11						5	4	3	2		0
PDT Base Address bits 15-12											CD	WT

4 KiB pagina's, geen PSE

Page Directory Entry

31

16

Page Table Address
bits 31-16

15			12	11		9	8	7	6	5	4	3	2	1	0
Page Table Address bits 15-12								0		A	CD	WT	U	W	P

Page Table Entry

31

16

Page Frame Address
bits 31-16

15			12	11		9	8	7	6	5	4	3	2	1	0
Page Frame Address bits 15-12							G	PA	D	A	CD	WT	U	W	P

4 MiB pagina's, PSE

31									22	21	20	19	18	17	16
Page Frame Address (PFA) bits 31-22										0	0	0	0	0	0

15	14	13	12	11		9	8	7	6	5	4	3	2	1	0
0	0	0	PA				G	1	D	A	CD	WT	U	W	P

4 MiB pagina's, PSE-36

31									22	21	20	19	18	17	16
Page Frame Address (PFA) bits 31-22										0	0	0	0	PFA bits 36-35

15		13	12	11		9	8	7	6	5	4	3	2	1	0
PFA bits 34-32			PA				G	1	D	A	CD	WT	U	W	P

4 MiB pagina's, PSE-40

31									22	21	20				16
Page Frame Address (PFA) bits 31-22										0	PFA bits 40-35

15	14	13	12	11		9	8	7	6	5	4	3	2	1	0
PFA bits 34-32			PA				G	1	D	A	CD	WT	U	W	P

Legacy PAE

CR3

31

16

Page-Directory-Pointer-Table Base Address
bits 31-16

15										5	4	3	2		0
PDPT Base Address bits 15-5											CD	WT

4 KiB pagina's

Page-Directory-Pointer Entry

63											52	51			48
0	0	0	0	0	0	0	0	0	0	0	0	PDB Address bits 51-48

47

32

Page-Directory Base Address
bits 47-32

31

16

Page-Directory Base Address
bits 31-16

15			12	11		9	8			5	4	3	2	1	0
PDB Address bits 15-12							0	0	0	0	CD	WT	0	0	P

Page-Directory Entry

63	62										52	51			48
NX	0	0	0	0	0	0	0	0	0	0	0	PTB Address bits 51-48

47

32

Page-Table Base Address
bits 47-32

31

16

Page-Table Base Address
bits 31-16

15			12	11		9	8	7	6	5	4	3	2	1	0
PTB Address bits 15-12								0		A	CD	WT	U	W	P

Page-Table Entry

63	62										52	51			48
NX	0	0	0	0	0	0	0	0	0	0	0	PPB Address bits 51-48

47

32

Physical Page Base Address
bits 47-32

31

16

Physical Page Base Address
bits 31-16

15			12	11		9	8	7	6	5	4	3	2	1	0
PPB Address bits 15-12							G	PA	D	A	CD	WT	U	W	P

2 MiB pagina's

Page-Directory-Pointer Entry

63											52	51			48
0	0	0	0	0	0	0	0	0	0	0	0	PDB Address bits 51-48

47

32

Page-Directory Base Address
bits 47-32

31

16

Page-Directory Base Address
bits 31-16

15			12	11		9	8			5	4	3	2	1	0
PDB Address bits 15-12							0	0	0	0	CD	WT	0	0	P

Page-Directory Entry

63	62										52	51			48
NX	0	0	0	0	0	0	0	0	0	0	0	PPB Address bits 51-48

47

32

Physical Page Base Address
bits 47-32

31										21	20				16
Physical Page Base Address bits 31-21											0	0	0	0	0

15		13	12	11		9	8	7	6	5	4	3	2	1	0
0	0	0	PA				G	1	D	A	CD	WT	U	W	P

Long-mode PAE

CR3

63											52	51			48
0	0	0	0	0	0	0	0	0	0	0	0	PML4 Base Address bits 51-48

47

32

Page-Map Level-4 Base Address
bits 47-32

31

16

Page-Map Level-4 Base Address
bits 31-16

15			12	11						5	4	3	2		0
PML4 Base Address bits 15-12											CD	WT

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