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Subtract the memory that backs the vm_page structures from phys_avail

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after mapping it.  This makes it possible to determine if a physical
page has a backing vm_page or not.
This commit is contained in:
Jake Burkholder 2003-03-17 03:16:00 +00:00
parent 5d907c3dd2
commit 9f77ba59c5
1 changed files with 2 additions and 4 deletions
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6
sys/vm/vm_page.c
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@ -245,6 +245,7 @@ vm_page_startup(vm_offset_t starta, vm_offset_t enda, vm_offset_t vaddr)
mapped = pmap_map(&vaddr, new_end, end,
VM_PROT_READ | VM_PROT_WRITE);
vm_page_array = (vm_page_t) mapped;
phys_avail[biggestone + 1] = new_end;
/*
* Clear all of the page structures
@ -262,10 +263,7 @@ vm_page_startup(vm_offset_t starta, vm_offset_t enda, vm_offset_t vaddr)
cnt.v_free_count = 0;
for (i = 0; phys_avail[i + 1] && npages > 0; i += 2) {
pa = phys_avail[i];
if (i == biggestone)
last_pa = new_end;
else
last_pa = phys_avail[i + 1];
last_pa = phys_avail[i + 1];
while (pa < last_pa && npages-- > 0) {
vm_pageq_add_new_page(pa);
pa += PAGE_SIZE;