[Qemu-devel] bug report: x86-64 guest on x86 host with KVM: can't boot ubuntu-8.10-desktop-amd64.iso

[Qemu-devel] bug report: x86-64 guest on x86 host with KVM: can't boot ubuntu-8.10-desktop-amd64.iso

[Zeev Tarantov]

Hello all!

Title says it all.
Without "-enable-kvm" qemu-system-x86_64 boots the ubuntu 8.10 cd image fine
(slowly) and with "-enable-kvm" I get corrupted graphics and can't continue past
grub menu. But it does boot a winxp disk image fine, with and without KVM.
Host is Linux 2.6.27.7 on a core2duo, running in 32 bit mode.
qemu is current svn trunk.
How can I help debug this?

-Zeev

Re: [Qemu-devel] bug report: x86-64 guest on x86 host with KVM: can't boot ubuntu-8.10-desktop-amd64.iso

[Anthony Liguori]

Zeev Tarantov wrote:
> Hello all!
>
> Title says it all.
> Without "-enable-kvm" qemu-system-x86_64 boots the ubuntu 8.10 cd image fine
> (slowly) and with "-enable-kvm" I get corrupted graphics and can't continue past
> grub menu. But it does boot a winxp disk image fine, with and without KVM.
> Host is Linux 2.6.27.7 on a core2duo, running in 32 bit mode.
> qemu is current svn trunk.
> How can I help debug this?
>   

It's a KVM module bug.  You need a patch to your KVM module.  See 
Glauber Costa's patch about not deleting slots properly on kvm-devel.

Regards,

Anthony Liguori

> -Zeev
>
>
>
>