On 02/03/2010 01:08 PM, Daniel Bareiro wrote:
On Wednesday, 03 February 2010 11:48:01 -0600,
Brian Jackson wrote:
I'm trying to boot a VM with 2048 MB in a VMHost with Linux 2.6.32.6
and qemu-kvm-0.12.2, but when doing it, I obtain it the following
message:
qemu: at most 2047 MB RAM can be simulated.
Are you sure you enabled KVM? Are you sure you are using the KVM
binary and not some QEMU binary that's sitting around. This is one of
those situations where the KVM command you are running might help.
Also the same binary you are running's version ($QEMU_BIN -h | head
-n1)
wilson:/usr/local/qemu-kvm/bin# ./qemu-system-x86_64 -h | head -n1
QEMU PC emulator version 0.12.2 (qemu-kvm-0.12.2), Copyright (c) 2003-2008 Fabrice Bellard
The procedure that I used to compile qemu-kvm is the same of always: to
download qemu-kvm-0.12.2, to install the packages (Debian) zlib1g-dev
and libpci-dev, and to compile of the following way:
# cd qemu-kvm-0.12.2
# ./configure --prefix=/usr/local/qemu-kvm
# make
# make install
Until the moment I never got to use qemu-kvm with VMs of more than 2048
MB. In an installation that I have with KVM-88 and kernel x86_64 I don't
have this problem.
QEMU and KVM only support 2GB of memory on a 32-bit host.
Both need to create a userspace mapping of the guests memory. In a
32-bit environment, you only have enough usable address space in a
process to create a 2GB region.
Regards,
Anthony Liguori
Thanks for your reply.
Regards,
Daniel
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