Re: [RFC PATCH 1/4] KVM: selftests: Add support for creating non-default type VMs

[Xiaoyao Li]

On 7/27/2021 2:37 AM, Erdem Aktas wrote:
> Currently vm_create function only creates KVM_X86_LEGACY_VM type VMs.
> Changing the vm_create function to accept type parameter to create
> new VM types.
>
> Signed-off-by: Erdem Aktas <erdemaktas@xxxxxxxxxx>
> Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> Reviewed-by: Peter Gonda <pgonda@xxxxxxxxxx>
> Reviewed-by: Marc Orr <marcorr@xxxxxxxxxx>
> Reviewed-by: Sagi Shahar <sagis@xxxxxxxxxx>
> ---
>   .../testing/selftests/kvm/include/kvm_util.h  |  1 +
>   tools/testing/selftests/kvm/lib/kvm_util.c    | 29 +++++++++++++++++--
>   2 files changed, 27 insertions(+), 3 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
> index d53bfadd2..c63df42d6 100644
> --- a/tools/testing/selftests/kvm/include/kvm_util.h
> +++ b/tools/testing/selftests/kvm/include/kvm_util.h
> @@ -88,6 +88,7 @@ int vcpu_enable_cap(struct kvm_vm *vm, uint32_t vcpu_id,
>   void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size);
>   
>   struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm);
> +struct kvm_vm *__vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm, int type);
>   void kvm_vm_free(struct kvm_vm *vmp);
>   void kvm_vm_restart(struct kvm_vm *vmp, int perm);
>   void kvm_vm_release(struct kvm_vm *vmp);
> diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
> index e5fbf16f7..70caa3882 100644
> --- a/tools/testing/selftests/kvm/lib/kvm_util.c
> +++ b/tools/testing/selftests/kvm/lib/kvm_util.c
> @@ -180,13 +180,36 @@ _Static_assert(sizeof(vm_guest_mode_params)/sizeof(struct vm_guest_mode_params)
>    * Return:
>    *   Pointer to opaque structure that describes the created VM.
>    *
> - * Creates a VM with the mode specified by mode (e.g. VM_MODE_P52V48_4K).
> + * Wrapper VM Create function to create a VM with default type (0).

Can we pass KVM_X86_LEGACY_VM (whatever name when it's upstreamed) 
instead of 0?

> + */
> +struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm)
> +{
> +	return __vm_create(mode, phy_pages, perm, 0);
> +}
> +