pmap.c (63017f04eba60df8cff22dc683b67ee07810e025) pmap.c (076585265f2c3c13664a3cae6a3638d53092892b)
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 * Copyright (c) 1994 David Greenman
7 * All rights reserved.
8 *

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34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 * Copyright (c) 1994 David Greenman
7 * All rights reserved.
8 *

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34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
42 * $Id: pmap.c,v 1.63 1995/10/23 00:47:10 davidg Exp $
42 * $Id: pmap.c,v 1.64 1995/10/23 02:31:29 davidg Exp $
43 */
44
45/*
46 * Derived from hp300 version by Mike Hibler, this version by William
47 * Jolitz uses a recursive map [a pde points to the page directory] to
48 * map the page tables using the pagetables themselves. This is done to
49 * reduce the impact on kernel virtual memory for lots of sparse address
50 * space, and to reduce the cost of memory to each process.

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811 struct pmap *pmap;
812 register vm_offset_t sva;
813 register vm_offset_t eva;
814{
815 register pt_entry_t *ptp, *ptq;
816 vm_offset_t pa;
817 register pv_entry_t pv;
818 vm_offset_t va;
43 */
44
45/*
46 * Derived from hp300 version by Mike Hibler, this version by William
47 * Jolitz uses a recursive map [a pde points to the page directory] to
48 * map the page tables using the pagetables themselves. This is done to
49 * reduce the impact on kernel virtual memory for lots of sparse address
50 * space, and to reduce the cost of memory to each process.

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811 struct pmap *pmap;
812 register vm_offset_t sva;
813 register vm_offset_t eva;
814{
815 register pt_entry_t *ptp, *ptq;
816 vm_offset_t pa;
817 register pv_entry_t pv;
818 vm_offset_t va;
819 vm_page_t m;
820 pt_entry_t oldpte;
821
822 if (pmap == NULL)
823 return;
824
825 ptp = get_pt_entry(pmap);
826
827 /*

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1421 pmap_t pmap;
1422 vm_offset_t addr;
1423 vm_object_t object;
1424 vm_offset_t offset;
1425 vm_offset_t size;
1426{
1427 vm_offset_t tmpoff;
1428 vm_page_t p;
819 pt_entry_t oldpte;
820
821 if (pmap == NULL)
822 return;
823
824 ptp = get_pt_entry(pmap);
825
826 /*

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1420 pmap_t pmap;
1421 vm_offset_t addr;
1422 vm_object_t object;
1423 vm_offset_t offset;
1424 vm_offset_t size;
1425{
1426 vm_offset_t tmpoff;
1427 vm_page_t p;
1429 int bits;
1430 int objbytes;
1431
1432 if (!pmap || ((size > MAX_INIT_PT) &&
1433 (object->resident_page_count > (MAX_INIT_PT / NBPG)))) {
1434 return;
1435 }
1436
1437 /*

--- 526 unchanged lines hidden --- 		1428 int objbytes;
1429
1430 if (!pmap || ((size > MAX_INIT_PT) &&
1431 (object->resident_page_count > (MAX_INIT_PT / NBPG)))) {
1432 return;
1433 }
1434
1435 /*

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