Bug 28670 - Kernel 2.2.17-14smp only detects 896MB out of 1024MB
Summary: Kernel 2.2.17-14smp only detects 896MB out of 1024MB
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel   
(Show other bugs)
Version: 6.2
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Michael K. Johnson
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2001-02-21 19:49 UTC by Gernot
Modified: 2007-04-18 16:31 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-02-21 20:08:28 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Gernot 2001-02-21 19:49:20 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)

The BIOS detects the 1024MB correctly, but the kernel writes the following 
message to /var/log/messages:
19 14:18:55 fire kernel: Warning only 896MB will be used.

Reproducible: Didn't try


My machine has 1024MB RAM installed and the BIOS also shows the 1024MB
correctly. But, Linux seems to have a problem with it as you can see at 
the below

Feb 19 14:18:54 fire kernel: Symbols match kernel version 2.2.17. Feb 19
14:18:55 fire kernel: Loaded 27 symbols from 2 modules. Feb 19 14:18:55 
fire kernel:
Linux version 2.2.17-14smp (root@porky.devel.redhat.com) (gcc version
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 SMP Mon Feb 5 
18:40:03 EST 2001 Feb
19 14:18:55 fire kernel: Warning only 896MB will be used. 

This is the error I get in the /var/log/messages file. The output of
/proc/meminfo is: 

total: used: free: shared: buffers: cached: Mem: 928161792 397012992 
1147170816 38400000 81252352 Swap: 808255488 0 808255488 MemTotal: 906408 
MemFree: 518700 kB MemShared: 1120284 kB Buffers: 37500 kB Cached: 79348 kB
BigTotal: 0 kB BigFree: 0 kB SwapTotal: 789312 kB SwapFree: 789312 kB 

I already tried to add the appaned="mem=1024M" line to lilo.conf with no
success too. 

I'm using the standard Redhat kernel (RPM packages) 2.2.17-14smp (It's a 
CPU machine). 

This looks like it's a bug in the kernel 2.2.17-14smp. Can anyone confirm 

If you need further information, please contact me ( gernot@321host-
it.com )

Thanks in advance, 


Comment 1 Gernot 2001-02-21 20:08:25 UTC
Sorry, I meant:


I also tried:

since it was suggested by a fellow technician :) Same results: none :)

Comment 2 Michael K. Johnson 2001-02-22 00:12:52 UTC
Use the enterprise kernel for that

The top 128M of that 1GB of memory is reserved for kernel virtual mappings.

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