[ kvm-Bugs-2609069 ] cannot create guests with >3584 mb memory with >=kvm-81

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Bugs item #2609069, was opened at 2009-02-17 13:38
Message generated for change (Settings changed) made by jessorensen
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Category: None
Group: None
>Status: Closed
>Resolution: Works For Me
Priority: 5
Private: No
Submitted By: Albert Weichselbraun (albert2611)
Assigned to: Nobody/Anonymous (nobody)
Summary: cannot create guests with >3584 mb memory with >=kvm-81

Initial Comment:
Creating guest with more >3584 mb of memory leads to the following error message with >= kvm-81:

qemu: loading initrd (0x4c852c bytes) at 0x000000007fb37000
create_userspace_phys_mem: Invalid argument
kvm_cpu_register_physical_memory: failed

The following startup script works with <= kvm-80,
but fails with higher version (last version tested: kvm-84):

/usr/local/bin/qemu-system-x86_64 \
-drive file=/dev/mapper/g3-forge,if=virtio,boot=on \ -drive file=/dev/mapper/g3-tmp,if=virtio \
-net nic,vlan=0,model=virtio,macaddr=00:56:3E:39:55:66 \
-net tap,vlan=0,script=/etc/kvm/kvm-ifup \
-m 3585 \
-kernel /boot/vmlinuz-2.6.27 \
-initrd /boot/initrd.img-2.6.27 \
-append "root=/dev/vda ro" \
-vnc localhost:0

additional information:
cpu model: Intel(R) Xeon(R) CPU X5355
kvm version: 81+
host kernel arch: x86_64
guest: Debian Linux (amd64), 2.6.27.17 (guest and host)
qemu command: see above

The problem disappears if the -no-kvm switch is used.
The -no-kvm-irqchip or -no-kvm-pit switch have no influence on this behavior.

Cheers albert and gerhard


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>Comment By: Jes Sorensen (jessorensen)
Date: 2011-03-03 12:01

Message:
Bug seems to have been fixed - works fine here.


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2609069&group_id=180599