Re: [PATCH v5 1/6] kvm: Introduce kvm_arch_get_default_type hook

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On Thu, 27 Jul 2023 at 08:31, Akihiko Odaki <akihiko.odaki@xxxxxxxxxx> wrote:
>
> kvm_arch_get_default_type() returns the default KVM type. This hook is
> particularly useful to derive a KVM type that is valid for "none"
> machine model, which is used by libvirt to probe the availability of
> KVM.
>
> For MIPS, the existing mips_kvm_type() is reused. This function ensures
> the availability of VZ which is mandatory to use KVM on the current
> QEMU.
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@xxxxxxxxxx>
> ---
>  include/sysemu/kvm.h     | 2 ++
>  target/mips/kvm_mips.h   | 9 ---------
>  accel/kvm/kvm-all.c      | 4 +++-
>  hw/mips/loongson3_virt.c | 2 --
>  target/arm/kvm.c         | 5 +++++
>  target/i386/kvm/kvm.c    | 5 +++++
>  target/mips/kvm.c        | 2 +-
>  target/ppc/kvm.c         | 5 +++++
>  target/riscv/kvm.c       | 5 +++++
>  target/s390x/kvm/kvm.c   | 5 +++++
>  10 files changed, 31 insertions(+), 13 deletions(-)
>
> diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
> index 115f0cca79..ccaf55caf7 100644
> --- a/include/sysemu/kvm.h
> +++ b/include/sysemu/kvm.h
> @@ -369,6 +369,8 @@ int kvm_arch_get_registers(CPUState *cpu);
>
>  int kvm_arch_put_registers(CPUState *cpu, int level);
>
> +int kvm_arch_get_default_type(MachineState *ms);
> +

New global functions should have a doc comment that explains
what they do, what their API is, etc. For instance, is
this allowed to return an error, and if so, how ?

Otherwise
Reviewed-by: Peter Maydell <peter.maydell@xxxxxxxxxx>

thanks
-- PMM



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