Hi, Brian. On Wednesday, 03 February 2010 16:44:28 -0600, Brian Jackson wrote: > > Anthony Liguori wrote: > > >>> 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. > > But, according to what I read in the link [1] that commented, just by to > > have a x86_64 kernel would have to be sufficient to serve more than 2047 > > MB of RAM. > The kvm userspace would also have to be compiled as a 64bit binary. > Possibly statically compiled somewhere else (if that's even possible) > or with a 64bit chroot. Hmmm... and there is some way to compile qemu-kvm as a 64bit binary on a operating system userspace of 32bit? I tried with ARCH=x86_64 with make but when using this I obtain several messages of the type "cast to/from pointer from/to integer of different size". Thanks for your reply. Regards, Daniel -- Mi frase del día: An algorithm must be seen to be believed. -- D. E. Knuth Daniel Bareiro - GNU/Linux registered user #188.598 Proudly running Debian GNU/Linux with uptime: 14:02:40 up 31 days, 22:47, 11 users, load average: 0.00, 0.02, 0.00
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