> On 2016/4/28 9:50, RAVINDRA KUMAR SANDE wrote:
> >
> > What I did :
> > 1) Just for investigation, I took a ARMv8 ( OdroidC2 ) board
> > 2) I compiled Linux 3.14 with KVM support for this ARMv8 ( OdroidC2 )
> > board, with modification replacing meson_timer by arm timer in its dts
> > file.
> > Why Linux 3.14 : I took Linux 3.14 because display drivers for this
> > board are officially for this version; and I am interested in seeing
> > some Linux guest booting with display on.
> > 3) I see from boot log of that KVM is initialized successfully, and I
> > can see /dev/kvm node.
> > 4) I built latest Qemu with --enable-kvm on this board natively.
> >
> > What I find :
> > 1) running "qemu-system-arm -enable-kvm -machine vexpress-a9 ...."
> > gives error : no accelerator found
> > 2) running "qemu-system-aarch64 -enable-kvm -machine vexpress-a9 ...."
> > gives error : kmv_init_vcpu (IOCtl on /dev/kvm) failed, guest not supported
> > ( I experimented some modifications as well to overcome above error,
> > such as replacing value assigned to cpu->kvm_target etc, but IOCtl call
> > is failing)
> >
> > Query:
>> 1) Does Arm64 Linux not enable KVM support for Arm32 guest ?
> > 2) Can qemu-system-arm not use the KVM feature on Arm64 host ?
> > 3) Can qemu-system-aarch64 not use KVM feature for Arm32 guest ?
> >
> ------- Original Message -------
> Sender : Shannon Zhao<zhaoshenglong@xxxxxxxxxx>
>
> You can use below command to boot a ARM32 guest on ARM64?
>
> qemu-system-aarch64 -enable-kvm -machine virt,kernel_irqchip=on -cpu
> host,aarch64=off ....
>
> --
> Shannon
I will try above on Arm64.
I have another query, for Arm32 host with KVM enabled.
I see that "qemu-system-arm -enable-kvm -machine vexpress-a9 ..." gives error
kmv_init_vcpu (IOCtl on /dev/kvm) failed, guest not supported.
Is there any way to emulate vexpress-a9 with -enable-kvm on qemu ?
Regards,
Ravindra Sandeÿôèº{.nÇ+‰·Ÿ®‰†+%ŠËÿ±éݶ¥Šwÿº{.nÇ+‰·¤¾oâžØ^n‡r¡ö¦zË?ëh™¨èÚ&£ûàz¿äz¹Þ—ú+€Ê+zf£¢·hšˆ§~††Ûiÿÿï?êÿ‘êçz_è®æj:+v‰¨þ)ߣøm
