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When not using the OLD pmap, bump kernel KVA space to 512MB (OLD pmap stays 

at 256MB).
This commit is contained in:
matt 2002-06-26 01:16:22 +00:00
parent 7a12a9737c
commit 1a5c0cf685
1 changed files with 14 additions and 1 deletions
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15
sys/arch/powerpc/include/mpc6xx/vmparam.h
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@ -106,23 +106,32 @@
*/
#if 0
/*
* Move the SR# to the top 4 bits to make the lower 19bits entirely random
* Move the SR# to the top 4 bits to make the lower 20 bits entirely random
* so to give better PTE distribution.
*/
#define VSID_MAKE(sr, hash) (((sr) << (ADDR_SR_SHFT-4))|((hash) & 0xfffff))
#define VSID_TO_SR(vsid) (((vsid) >> (ADDR_SR_SHFT-4)) & 0xF)
#define VSID_TO_HASH(vsid) ((vsid) & 0xfffff)
#define VSID_SR_INCREMENT 0x00100000
#else
#define VSID_MAKE(sr, hash) ((sr) | (((hash) & 0xfffff) << 4))
#define VSID_TO_SR(vsid) ((vsid) & 0xF)
#define VSID_TO_HASH(vsid) (((vsid) >> 4) & 0xfffff)
#define VSID_SR_INCREMENT 0x00000001
#endif
/*
* Fixed segments
*/
#ifdef OLDPMAP
#define USER_SR 13
#define KERNEL_SR 14
#else
#define USER_SR 12
#define KERNEL_SR 13
#define KERNEL2_SR 14
#define KERNEL2_SEGMENT VSID_MAKE(KERNEL2_SR, KERNEL_VSIDBITS)
#endif
#define KERNEL_VSIDBITS 0xfffff
#define KERNEL_SEGMENT VSID_MAKE(KERNEL_SR, KERNEL_VSIDBITS)
#define EMPTY_SEGMENT VSID_MAKE(0, KERNEL_VSIDBITS)
@ -144,7 +153,11 @@
#define VM_MAXUSER_ADDRESS ((vaddr_t) 0x7ffff000)
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) (KERNEL_SR << ADDR_SR_SHFT))
#ifndef OLDPMAP
#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH)
#else
#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH)
#endif
#ifndef VM_PHYSSEG_MAX
#define VM_PHYSSEG_MAX 16