diff options
| -rw-r--r-- | sys/vm/vm_page.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index 8926489..f834c31 100644 --- a/sys/vm/vm_page.c +++ b/sys/vm/vm_page.c @@ -212,6 +212,7 @@ vm_page_startup(vm_offset_t vaddr) /* the biggest memory array is the second group of pages */ vm_paddr_t end; vm_paddr_t biggestsize; + vm_paddr_t low_water, high_water; int biggestone; vm_paddr_t total; @@ -227,6 +228,9 @@ vm_page_startup(vm_offset_t vaddr) phys_avail[i + 1] = trunc_page(phys_avail[i + 1]); } + low_water = phys_avail[0]; + high_water = phys_avail[1]; + for (i = 0; phys_avail[i + 1]; i += 2) { vm_paddr_t size = phys_avail[i + 1] - phys_avail[i]; @@ -234,6 +238,10 @@ vm_page_startup(vm_offset_t vaddr) biggestone = i; biggestsize = size; } + if (phys_avail[i] < low_water) + low_water = phys_avail[i]; + if (phys_avail[i + 1] > high_water) + high_water = phys_avail[i + 1]; ++nblocks; total += size; } @@ -289,8 +297,8 @@ vm_page_startup(vm_offset_t vaddr) * use (taking into account the overhead of a page structure per * page). */ - first_page = phys_avail[0] / PAGE_SIZE; - page_range = phys_avail[(nblocks - 1) * 2 + 1] / PAGE_SIZE - first_page; + first_page = low_water / PAGE_SIZE; + page_range = high_water / PAGE_SIZE - first_page; npages = (total - (page_range * sizeof(struct vm_page)) - (end - new_end)) / PAGE_SIZE; end = new_end; |
