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Add the machine-specific definitions for configuring the new physical

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memory allocator.

Set the size of phys_avail[] and dump_avail[] using one of these
definitions.

Approved by:	re
This commit is contained in:
alc 2007-06-05 05:17:20 +00:00
parent 1c9a6e5327
commit 414dfd6eee
2 changed files with 44 additions and 1 deletions
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8
sys/i386/i386/machdep.c
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@ -189,7 +189,13 @@ static void freebsd4_sendsig(sig_t catcher, ksiginfo_t *, sigset_t *mask);
long Maxmem = 0;
long realmem = 0;
#define PHYSMAP_SIZE (2 * 16)
/*
* The number of PHYSMAP entries must be one less than the number of
* PHYSSEG entries because the PHYSMAP entry that spans the largest
* physical address that is accessible by ISA DMA is split into two
* PHYSSEG entries.
*/
#define PHYSMAP_SIZE (2 * (VM_PHYSSEG_MAX - 1))
vm_paddr_t phys_avail[PHYSMAP_SIZE + 2];
vm_paddr_t dump_avail[PHYSMAP_SIZE + 2];

37
sys/i386/include/vmparam.h
View File

@ -84,6 +84,43 @@
*/
#define VM_PHYSSEG_DENSE
/*
* The number of PHYSSEG entries must be one greater than the number
* of phys_avail entries because the phys_avail entry that spans the
* largest physical address that is accessible by ISA DMA is split
* into two PHYSSEG entries.
*/
#define VM_PHYSSEG_MAX 17
/*
* Create one free page pool. Since the i386 kernel virtual address
* space does not include a mapping onto the machine's entire physical
* memory, VM_FREEPOOL_DIRECT is defined as an alias for the default
* pool, VM_FREEPOOL_DEFAULT.
*/
#define VM_NFREEPOOL 1
#define VM_FREEPOOL_DEFAULT 0
#define VM_FREEPOOL_DIRECT 0
/*
* Create two free page lists: VM_FREELIST_DEFAULT is for physical
* pages that are above the largest physical address that is
* accessible by ISA DMA and VM_FREELIST_ISADMA is for physical pages
* that are below that address.
*/
#define VM_NFREELIST 2
#define VM_FREELIST_DEFAULT 0
#define VM_FREELIST_ISADMA 1
/*
* The largest allocation size is 2MB under PAE and 4MB otherwise.
*/
#ifdef PAE
#define VM_NFREEORDER 10
#else
#define VM_NFREEORDER 11
#endif
/*
* Kernel physical load address.
*/