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Fixed calculation of physmem when the special MAXMEM kernel config overide

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is used. This bug caused the buffer cache to be WAY too big when memory
was being restricted - resulting in hangs and other out of memory problems.
This commit is contained in:
David Greenman 1994-02-07 07:44:42 +00:00
parent c1eeb17fc0
commit 24ab273fa1
2 changed files with 14 additions and 4 deletions
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9
sys/amd64/amd64/machdep.c
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@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.32 1994/01/31 23:47:25 davidg Exp $
* $Id: machdep.c,v 1.33 1994/02/01 10:03:43 davidg Exp $
*/
#include "npx.h"
@ -1118,7 +1118,12 @@ init386(first)
if (MAXMEM/4 < Maxmem)
Maxmem = MAXMEM/4;
#endif
physmem = pagesinbase + pagesinext;
/*
* Calculate number of physical pages, but account for Maxmem
* limitation above.
*/
physmem = pagesinbase +
(min(pagesinext + 0x100000/PAGE_SIZE, Maxmem) - 0x100000/PAGE_SIZE);
/* call pmap initialization to make new kernel address space */
pmap_bootstrap (first, 0);

9
sys/i386/i386/machdep.c
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.32 1994/01/31 23:47:25 davidg Exp $
* $Id: machdep.c,v 1.33 1994/02/01 10:03:43 davidg Exp $
*/
#include "npx.h"
@ -1118,7 +1118,12 @@ init386(first)
if (MAXMEM/4 < Maxmem)
Maxmem = MAXMEM/4;
#endif
physmem = pagesinbase + pagesinext;
/*
* Calculate number of physical pages, but account for Maxmem
* limitation above.
*/
physmem = pagesinbase +
(min(pagesinext + 0x100000/PAGE_SIZE, Maxmem) - 0x100000/PAGE_SIZE);
/* call pmap initialization to make new kernel address space */
pmap_bootstrap (first, 0);