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Increase NKPT from 17 to 30. This fixes the 4GB ram boot panic on both

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-current and RELENG_4 with GENERIC.

NKPT is the number of initial bootstrap page table pages we create for
the kernel during startup. Once VM is up, we resize it as needed, but
with 4G ram, the size of the vm_page_t structures was pushing it over
the limit.  The fact that trimmed down kernels boot on 4G ram machines
suggests that we were pretty close to the edge.

The "30" is arbitary, but smaller than the 'nkpt' variable on all
machines that I checked.
This commit is contained in:
Peter Wemm 2000-11-30 01:53:02 +00:00
parent 1bd0eefb4c
commit 083e9ed543
2 changed files with 2 additions and 2 deletions
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2
sys/amd64/include/pmap.h
View File

@ -88,7 +88,7 @@
#define VADDR(pdi, pti) ((vm_offset_t)(((pdi)<<PDRSHIFT)|((pti)<<PAGE_SHIFT)))
#ifndef NKPT
#define NKPT 17 /* actual number of kernel page tables */
#define NKPT 30 /* actual number of kernel page tables */
#endif
#ifndef NKPDE
#ifdef SMP

2
sys/i386/include/pmap.h
View File

@ -88,7 +88,7 @@
#define VADDR(pdi, pti) ((vm_offset_t)(((pdi)<<PDRSHIFT)|((pti)<<PAGE_SHIFT)))
#ifndef NKPT
#define NKPT 17 /* actual number of kernel page tables */
#define NKPT 30 /* actual number of kernel page tables */
#endif
#ifndef NKPDE
#ifdef SMP