Re: [PATCH 2/2] kvm: rename KVM_MAX_VCPU_ID to, KVM_MAX_VCPU_IDS

Christian Zigotzky
2022-07-05T16:10:48Z

On 14 September 2021 at 05:59 pm, Christian Zigotzky wrote:
> Hello Juergen,
> Hello All,
>
> Since the RC1 of kernel 5.13, -smp 2 and -smp 4 don't work with a
> virtual e5500 QEMU KVM-HV machine anymore. [1]
> I see in the serial console, that the uImage doesn't load. I use the
> following QEMU command for booting:
>
> qemu-system-ppc64 -M ppce500 -cpu e5500 -enable-kvm -m 1024 -kernel
> uImage -drive format=raw,file=MintPPC32-X5000.img,index=0,if=virtio
> -netdev user,id=mynet0 -device virtio-net,netdev=mynet0 -append "rw
> root=/dev/vda" -device virtio-vga -device virtio-mouse-pci -device
> virtio-keyboard-pci -device pci-ohci,id=newusb -device
> usb-audio,bus=newusb.0 -smp 4
>
> The kernels boot without KVM-HV.
>
> Summary for KVM-HV:
>
> -smp 1 -> works
> -smp 2 -> doesn't work
> -smp 3 -> works
> -smp 4 -> doesn't work
>
> I used -smp 4 before the RC1 of kernel 5.13 because my FSL P5040 BookE
> machine [2] has 4 cores.
>
> Does this patch solve this issue? [3]
>
> Thanks,
> Christian
>
> [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2021-May/229103.html
> [2] http://wiki.amiga.org/index.php?title=X5000
> [3]
> https://lists.ozlabs.org/pipermail/linuxppc-dev/2021-September/234152.html
Hello,

Since the RC5 of kernel 5.19, -smp 2 and -smp 4 work again. I don't know
which patch has solved the issue.

Cheers,
Christian