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

[Erdem Aktas <erdemaktas@xxxxxxxxxx>]

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).
+ */
+struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm)
+{
+	return __vm_create(mode, phy_pages, perm, 0);
+}
+
+/*
+ * VM Create with a custom type
+ *
+ * Input Args:
+ *   mode - VM Mode (e.g. VM_MODE_P52V48_4K)
+ *   phy_pages - Physical memory pages
+ *   perm - permission
+ *   type - VM type
+ *
+ * Output Args: None
+ *
+ * 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) and the
+ * type specified in type (e.g. KVM_X86_LEGACY_VM, KVM_X86_TDX_VM ...).
  * When phy_pages is non-zero, a memory region of phy_pages physical pages
  * is created and mapped starting at guest physical address 0.  The file
  * descriptor to control the created VM is created with the permissions
  * given by perm (e.g. O_RDWR).
  */
-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)
 {
 	struct kvm_vm *vm;
 
@@ -200,7 +223,7 @@ struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm)
 	INIT_LIST_HEAD(&vm->userspace_mem_regions);
 
 	vm->mode = mode;
-	vm->type = 0;
+	vm->type = type;
 
 	vm->pa_bits = vm_guest_mode_params[mode].pa_bits;
 	vm->va_bits = vm_guest_mode_params[mode].va_bits;
-- 
2.32.0.432.gabb21c7263-goog