Re: [Qemu-discuss] qemu with kvm does not work, without kvm works

[peeyush Agrawal]

Thanks for taking interest in this.

Yet i checked all these things beforehand 
* /dev/kvm exists
* I ran everything as sudo user, so there is no problem of not able to read-write to/from /dev/kvm
* lsmod | grep kvm, lists both kvm and kvm-intel.

* surprising there is no error on output and even nothing on dmesg output
* I am using qemu-0.15.x, I also tried with older 0.12 and newer 1.0.x, but same thing everytime.
* distro is ubuntu-11.10, but it came with newer linux kernel 2.6.32, which i removed ( because it does not boots on efi shell due to some unknown incompatibility and 2.6.29 boots )

   So changing kernel version is ruled out in this situation, due to efi shell.

Any lead will be appreciated. :-)
.

On Tue, May 29, 2012 at 9:39 PM, Mike Lovell <address@hidden> wrote:

On 05/28/2012 11:47 AM, peeyush Agrawal wrote:

 I changed kernel of my system ( from 2.6.32 to 2.6.29 ) due to some reason. I also put modules at appropriate location ( /lib/modules/`uname -r`). But problem is :

 when I run "qemu --enable-kvm --kernel vmlinuz" it does not boot, while "qemu --kernel vmlinuz" does boot.
( I have loaded kvm and kvm-intel using modprobe already ). surprising I am not able to see any dmesg or loading error. By does not boot I meant does not even show first kernel message and hangs on the starting screen. While without "--enable-kvm" everything is perfect.

there are a couple things you should check. are the kvm modules listed when you do `lsmod` and does /dev/kvm exist? when you execute qemu, does the user executing it have permissions to read and write /dev/kvm? when you have the '-enable-kvm' option, does qemu return any error messages?

what version of qemu are you using? what distribution of linux? i am also somewhat curious as to why 2.6.32 doesn't work for you.

mike

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Peeyush Agrawal.