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Increase the size of the kernel virtual address space to 6GB. Until the

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maximum size of the kmem map can be greater than 4GB, there is little point
in making the kernel virtual address space larger than 6GB.

Tested by:	kris@
This commit is contained in:
Alan Cox 2008-06-29 18:35:00 +00:00
parent 04a58b9d5f
commit f4f491d095
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=180100
1 changed files with 3 additions and 4 deletions
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7
sys/amd64/include/pmap.h
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@ -111,12 +111,11 @@
/* Initial number of kernel page tables. */
#ifndef NKPT
/* 240 page tables needed to map 16G (120B "struct vm_page", 2M page tables). */
#define NKPT 240
#define NKPT 2288
#endif
#define NKPML4E 1 /* number of kernel PML4 slots */
#define NKPDPE 1 /* number of kernel PDP slots */
#define NKPDPE 5 /* number of kernel PDP slots */
#define NKPDE (NKPDPE*NPDEPG) /* number of kernel PD slots */
#define NUPML4E (NPML4EPG/2) /* number of userland PML4 pages */
@ -133,7 +132,7 @@
#define KPML4I (NPML4EPG-1) /* Top 512GB for KVM */
#define DMPML4I (KPML4I-1) /* Next 512GB down for direct map */
#define KPDPI (NPDPEPG-2) /* kernbase at -2GB */
#define KPDPI (NPDPEPG-6) /* kernel map starts at -6GB */
/*
* XXX doesn't really belong here I guess...