KVM: selftests: Convert hyperv_svm_test away from VCPU_ID

Convert hyperv_svm_test to use vm_create_with_one_vcpu() and pass around a
'struct kvm_vcpu' object instead of using a global VCPU_ID.  Note, this is
a "functional" change in the sense that the test now creates a vCPU with
vcpu_id==0 instead of vcpu_id==1.  The non-zero VCPU_ID was 100% arbitrary
and added little to no validation coverage.  If testing non-zero vCPU IDs
is desirable for generic tests, that can be done in the future by tweaking
the VM creation helpers.

Opportunistically use vcpu_run() instead of _vcpu_run(), the test expects
KVM_RUN to succeed.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
index 994b33f..b6a749f 100644 (file)
--- a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
@@ -21,7 +21,6 @@
 #include "svm_util.h"
 #include "hyperv.h"
 
-#define VCPU_ID                1
 #define L2_GUEST_STACK_SIZE 256
 
 struct hv_enlightenments {
@@ -122,6 +121,7 @@ int main(int argc, char *argv[])
 {
        vm_vaddr_t nested_gva = 0;
 
+       struct kvm_vcpu *vcpu;
        struct kvm_vm *vm;
        struct kvm_run *run;
        struct ucall uc;
@@ -132,20 +132,20 @@ int main(int argc, char *argv[])
                exit(KSFT_SKIP);
        }
        /* Create VM */
-       vm = vm_create_default(VCPU_ID, 0, guest_code);
-       vcpu_set_hv_cpuid(vm, VCPU_ID);
-       run = vcpu_state(vm, VCPU_ID);
+       vm = vm_create_with_one_vcpu(&vcpu, guest_code);
+       vcpu_set_hv_cpuid(vm, vcpu->id);
+       run = vcpu->run;
        vcpu_alloc_svm(vm, &nested_gva);
-       vcpu_args_set(vm, VCPU_ID, 1, nested_gva);
+       vcpu_args_set(vm, vcpu->id, 1, nested_gva);
 
        for (stage = 1;; stage++) {
-               _vcpu_run(vm, VCPU_ID);
+               vcpu_run(vm, vcpu->id);
                TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
                            "Stage %d: unexpected exit reason: %u (%s),\n",
                            stage, run->exit_reason,
                            exit_reason_str(run->exit_reason));
 
-               switch (get_ucall(vm, VCPU_ID, &uc)) {
+               switch (get_ucall(vm, vcpu->id, &uc)) {
                case UCALL_ABORT:
                        TEST_FAIL("%s at %s:%ld", (const char *)uc.args[0],
                                  __FILE__, uc.args[1]);