Bug 225530 - i386: only 4GB available on 8GB machine
i386: only 4GB available on 8GB machine
Status: CLOSED CURRENTRELEASE
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: anaconda (Show other bugs)
5.0
All Linux
medium Severity medium
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Assigned To: Anaconda Maintenance Team
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Depends On:
Blocks:
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Reported: 2007-01-31 00:07 EST by Len Brown
Modified: 2008-08-02 19:40 EDT (History)
1 user (show)

See Also:
Fixed In Version: RHEL5
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2008-04-18 07:21:41 EDT
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description Len Brown 2007-01-31 00:07:01 EST
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@ls20-bc1-14.build.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 01:47:23 EST
FC6 has the same problem:

Linux version 2.6.18-1.2798.fc6 (brewbuilder@hs20-bc2-4.build.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 14:54:21 EST
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 09:33:31 EDT
Is this fixed in 5.0 GA?

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