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[Qemu-devel] [Bug 494500] Re: QEMU 0.12.0 does not support KVM with Kern


From: Jes Sorensen
Subject: [Qemu-devel] [Bug 494500] Re: QEMU 0.12.0 does not support KVM with Kernel < 2.6.29, bug in ./configure and kvm-all.c
Date: Wed, 30 Jun 2010 11:26:39 -0000

As pointed out repeatedly, this is _not_ a bug in QEMU

Stop reopening the bug!


** Changed in: qemu
       Status: New => Invalid

-- 
QEMU 0.12.0 does not support KVM with Kernel < 2.6.29, bug in ./configure and 
kvm-all.c
https://bugs.launchpad.net/bugs/494500
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Status in QEMU: Invalid

Bug description:
I tryed to compile QEMU 0.12.0-rc1 with KVM support without success.

Here my configuration:

uname -a
Linux bla 2.6.28-11-server #42-Ubuntu SMP Fri Apr 17 02:45:36 UTC 2009 x86_64 
GNU/Linux

dpkg -l | grep kvm
ii  kvm                                        1:84+dfsg-0ubuntu11

This KVM modul works fine.

I've installed this packets:

sudo apt-get install make wget zlib1g-dev libsdl-gfx1.2-dev
sudo apt-get install gcc libsdl1.2-dev zlib1g-dev libasound2-dev 
linux-kernel-headers-`uname-r` pkg-config libgnutls-dev libpci-dev

The compiling of QEMU 0.12.0-rc1 wihout KVM support was OK.

./configure --enable-kvm
#error Missing KVM capability KVM_CAP_DESTROY_MEMORY_REGION_WORKS
      NOTE: To enable KVM support, update your kernel to 2.6.29+ or install   
recent kvm-kmod from http://sourceforge.net/projects/kvm.
ERROR
ERROR: User requested feature kvm
ERROR: configure was not able to find it
ERROR

I can't change the kernel because Ubuntu 9.10 are too buggy.
So I tryed to install the latest kvm modul.

wget \
http://sourceforge.net/projects/kvm/files/kvm-kmod/2.6.32/kvm-kmod-2.6.32.tar.bz2/download
tar xjvf kvm-kmod-2.6.32.tar.bz2
cd kvm-kmod-2.6.32
./configure && make
sudo make install
sudo rmmod kvm_intel kvm_adm kvm
sudo make install
sudo rmmod kvm_intel kvm
sudo modprobe kvm_intel

dmesg | grep kvm
[81811.678377] loaded kvm module (kvm-kmod-2.6.32)

I tryed to compile QEMU with kvm support but I got the same error.

./configure --enable-kvm
#error Missing KVM capability KVM_CAP_DESTROY_MEMORY_REGION_WORKS
      NOTE: To enable KVM support, update your kernel to 2.6.29+ or install   
recent kvm-kmod from http://sourceforge.net/projects/kvm.
ERROR
ERROR: User requested feature kvm
ERROR: configure was not able to find it
ERROR

What is wrong?

See also http://qemu-buch.de/de/index.php/QEMU-KVM-Buch/_Installation







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