[libvirt-users] hvm on x86_64 on binutils i386

[Bhasker C V]

Using virt-manager and copying host CPU can still boot the guest OS (64-bit)
virt-install however still is not doing the job.

On 9/6/15, Bhasker C V <bhasker at unixindia.com> wrote:
> Hi,
>
>  I have this setup
>
>
> kernel: x86_64 version 4.2.0
> operating system (rootfs binutils etc.,) :  i386 (ELF-32-bit)
> qemu-system : version 2.4.0  qemu-system-x86_64 (i386 binary)
> libvirt: 1.2.19 (i386 )
>
> When I run the qemu-system-x86_64 binary with --enable-kvm, the guest
> machine is working properly as hvm. So
> QEMU can run x86_64 OS as hvm
>
> when I install using virt-install
> virt-install   --name debian --cdrom
> ./debian-stretch-DI-a1-amd64-netinst.iso --disk /STOR/DEBIAN,bus=sata
> --ram 1024 --graphics vnc
>
> I expect the 64-bit kernel to load and start install in the guest but
> i get a complaint that the guest cannot boot since the cpu is not
> 64-bit capable (please use a kernel appropriate for your CPU)
>
> I tried adding the machine option to virt-install
> virt-install   --name debian --cdrom
> ./debian-stretch-DI-a1-amd64-netinst.iso --disk /STOR/DEBIAN,bus=sata
> --ram 1024 --graphics vnc  --machine pc-i440fx-2.0
>
> No joy
>
> Tried changing the machine as hvm and also added --arch x86_64
> none of them help !
>
> Can someone tell me how to do this ?
> Just because the binutils and the OS is 32-bit I think libvirt must
> not refuse to hvm a x86_64 guest  since the kernel is still x86_64
> kernel and so so the kvm (module)
>
> I am guessing I am missing some option passed to virt-install or this
> is a limitation purely on libvirt (not qemu or kvm)
>
> Moreover QEMU is able to run a hvm guest x86_64 and manually running
> qemu does bootup the 64-bit kernel guests.
>