Bug 225530

Summary:	i386: only 4GB available on 8GB machine
Product:	Red Hat Enterprise Linux 5	Reporter:	Len Brown <len.brown>
Component:	anaconda	Assignee:	Anaconda Maintenance Team <anaconda-maint-list>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.0	CC:	jburke
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	RHEL5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-04-18 11:21:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Len Brown 2007-01-31 05:07:01 UTC

RHEL5 Server installed on an i386 machine with 8GB of RAM
does not install a PAE kernel, and is thus limited to 4GB
of the installed 8GB RAM.

Linux version 2.6.18-1.3002.el5 (brewbuilder.redhat.com) (gcc
version 4.1.1 20070105 (Red Hat 4.1.1-51)) #1 SMP Tue Jan 9 21:19:11 EST 2007
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009ec00 (usable)
 BIOS-e820: 000000000009ec00 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000009f91c000 (usable)
 BIOS-e820: 000000009f91c000 - 000000009f9d3000 (ACPI NVS)
 BIOS-e820: 000000009f9d3000 - 000000009fa42000 (usable)
 BIOS-e820: 000000009fa42000 - 000000009fa9a000 (reserved)
 BIOS-e820: 000000009fa9a000 - 000000009fab0000 (usable)
 BIOS-e820: 000000009fab0000 - 000000009fb1a000 (ACPI NVS)
 BIOS-e820: 000000009fb1a000 - 000000009fb2c000 (usable)
 BIOS-e820: 000000009fb2c000 - 000000009fb3a000 (ACPI data)
 BIOS-e820: 000000009fb3a000 - 000000009fc00000 (usable)
 BIOS-e820: 00000000ffc00000 - 00000000ffc0c000 (reserved)
 BIOS-e820: 0000000100000000 - 0000000260000000 (usable)
Warning only 4GB will be used.
Use a PAE enabled kernel.
3200MB HIGHMEM available.
896MB LOWMEM available.

Comment 1 Len Brown 2007-01-31 06:47:23 UTC

FC6 has the same problem:

Linux version 2.6.18-1.2798.fc6 (brewbuilder.redhat.com) (gcc
version 4.1.1 20061011 (Red Hat 4.1.1-30)) #1 SMP Mon Oct 16 14:37:32 EDT 2006
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009ec00 (usable)
 BIOS-e820: 000000000009ec00 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000009f91c000 (usable)
 BIOS-e820: 000000009f91c000 - 000000009f9d3000 (ACPI NVS)
 BIOS-e820: 000000009f9d3000 - 000000009fa42000 (usable)
 BIOS-e820: 000000009fa42000 - 000000009fa9a000 (reserved)
 BIOS-e820: 000000009fa9a000 - 000000009fab0000 (usable)
 BIOS-e820: 000000009fab0000 - 000000009fb1a000 (ACPI NVS)
 BIOS-e820: 000000009fb1a000 - 000000009fb2c000 (usable)
 BIOS-e820: 000000009fb2c000 - 000000009fb3a000 (ACPI data)
 BIOS-e820: 000000009fb3a000 - 000000009fc00000 (usable)
 BIOS-e820: 00000000ffc00000 - 00000000ffc0c000 (reserved)
 BIOS-e820: 0000000100000000 - 0000000260000000 (usable)
Warning only 4GB will be used.
Use a PAE enabled kernel.
3200MB HIGHMEM available.
896MB LOWMEM available.

Comment 2 Len Brown 2007-02-02 19:54:21 UTC

OpenSuse 10.2 does not have this problem -- it handles the full 8GB:

Linux version 2.6.18.2-34-bigsmp (geeko@buildhost) (gcc version 4.1.2 20061115 
(prerelease) (SUSE Linux)) #1 SMP Mon Nov 27 11:46:27 UTC 2006
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009ec00 (usable)
 BIOS-e820: 000000000009ec00 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000009f91c000 (usable)
 BIOS-e820: 000000009f91c000 - 000000009f9d3000 (ACPI NVS)
 BIOS-e820: 000000009f9d3000 - 000000009fa42000 (usable)
 BIOS-e820: 000000009fa42000 - 000000009fa9a000 (reserved)
 BIOS-e820: 000000009fa9a000 - 000000009fab0000 (usable)
 BIOS-e820: 000000009fab0000 - 000000009fb1a000 (ACPI NVS)
 BIOS-e820: 000000009fb1a000 - 000000009fb2c000 (usable)
 BIOS-e820: 000000009fb2c000 - 000000009fb3a000 (ACPI data)
 BIOS-e820: 000000009fb3a000 - 000000009fc00000 (usable)
 BIOS-e820: 00000000ffc00000 - 00000000ffc0c000 (reserved)
 BIOS-e820: 0000000100000000 - 0000000260000000 (usable)
8832MB HIGHMEM available.
896MB LOWMEM available.

Comment 4 Chris Lumens 2007-08-24 13:33:31 UTC

Is this fixed in 5.0 GA?