On DIG compliant platform like tiger4 machine, physical memory are 
partitioned into DMA and HIGHMEM zones.  The count_highmem_pages 
function incorrectly count all boot time reserved page as part of 
total highmem page. As a result, causing inflated highmem total 
reported in /proc/meminfo.  The LowTotal field in /proc/meminfo is 
calculated as totalram_page - totalhigh_pages.  Since total high is 
inflated, it cause total low to be under count and on some machine, 
we observed that low total is less than low free from /proc/meminfo.


Version-Release number of selected component (if applicable):
kernel-2.4.21-4.EL

How reproducible:
Always

Steps to Reproduce:
1. on any tiger4 or DIG compliant ia64 machine with large amount of 
memory
2. cat /proc/meminfo
3.
    

Actual Results:  MemTotal:     262361248 kB
MemFree:      93100976 kB
MemShared:           0 kB
Buffers:          9824 kB
Cached:          64496 kB
SwapCached:          0 kB
Active:          75872 kB
ActiveAnon:      10992 kB
ActiveCache:     64880 kB
Inact_dirty:      9440 kB
Inact_laundry:       0 kB
Inact_clean:         0 kB
Inact_target:    17056 kB
HighTotal:    260570320 kB
HighFree:     90778928 kB
LowTotal:      1790928 kB
LowFree:       2322048 kB
SwapTotal:     2040208 kB
SwapFree:      2040208 kB


Expected Results:  LowTotal to be equal or greater than LowFree field

Additional info: