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authorjake <jake@FreeBSD.org>2003-03-17 03:16:00 +0000
committerjake <jake@FreeBSD.org>2003-03-17 03:16:00 +0000
commit17dd501c20f0cfd9bb1b2baedc85b00830d6d439 (patch)
treee68534a46c62a836d68b5e48dc4e382345d4bc94 /sys/vm
parentf1bbc8cde6bd02cdf1742f706b0f4915fc5cec65 (diff)
downloadFreeBSD-src-17dd501c20f0cfd9bb1b2baedc85b00830d6d439.zip
FreeBSD-src-17dd501c20f0cfd9bb1b2baedc85b00830d6d439.tar.gz
Subtract the memory that backs the vm_page structures from phys_avail
after mapping it. This makes it possible to determine if a physical page has a backing vm_page or not.
Diffstat (limited to 'sys/vm')
-rw-r--r--sys/vm/vm_page.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 0f0ef50..102dc6e 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -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;
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