Bug 457254 - Unable to create guests with 2047MB RAM on 64bit host
Unable to create guests with 2047MB RAM on 64bit host
Product: Fedora
Classification: Fedora
Component: qemu (Show other bugs)
All Linux
low Severity low
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Assigned To: David Woodhouse
Fedora Extras Quality Assurance
Depends On:
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Reported: 2008-07-30 11:22 EDT by Brenton Leanhardt
Modified: 2009-07-14 11:18 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2009-07-14 11:18:31 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Brenton Leanhardt 2008-07-30 11:22:59 EDT
Description of problem:
Unable to create guests with 2047MB RAM on 64bit host.

Version-Release number of selected component (if applicable):


Linux dhcp227-13.rdu.redhat.com #1 SMP Mon Jul 21
01:09:10 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux

Host is a dell 7400 with 2 Quad core Xeon processors.  It has a total of 16GB of

How reproducible:

Here's the qeumu command 
[root@dhcp227-13 qemu]# cat
/usr/bin/qemu -S -M pc -m 2047 -smp 1 -name bleanhar2-developer-workstation
-monitor pty -no-reboot -boot c -kernel
/var/lib/libvirt/boot/virtinst-vmlinuz.XP3gxQ -initrd
/var/lib/libvirt/boot/virtinst-initrd.img.JS0iqL -append ksdevice=eth0 lang=
syslog= kssendmac 
method= -drive
file=/images/bleanhar2-developer-workstation-disk0,if=ide,index=0 -net
nic,macaddr=00:16:3e:20:2d:51,vlan=0 -net tap,fd=15,script=,vlan=0,ifname=vnet1
-serial pty -parallel none -usb -vnc 
Could not allocate physical memory
Actual results:

Could not allocate physical memory

Expected results:

64 bit KVM hosts should be allowed to have > 2GB of RAM 

Additional info:
Under 32bit F9 2047MB is the limit.  I can boot this VM just fine when using
32bit F9.  Under the 64bit host if I lower the Guest RAM to 1024 it starts as

I switched to 64bit because the KVM docs say that > 2GB is possible.
Comment 1 Bug Zapper 2009-06-09 22:18:17 EDT
This message is a reminder that Fedora 9 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 9.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '9'.

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Comment 2 Bug Zapper 2009-07-14 11:18:31 EDT
Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
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