Add a VM creator that "returns" the created vCPUs by filling the provided
array. This will allow converting multi-vCPU tests away from hardcoded
vCPU IDs.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
.../selftests/kvm/include/kvm_util_base.h | 17 +++++++++++++----
.../testing/selftests/kvm/kvm_page_table_test.c | 4 ++--
tools/testing/selftests/kvm/lib/kvm_util.c | 17 ++++++++++-------
.../testing/selftests/kvm/lib/perf_test_util.c | 4 ++--
4 files changed, 27 insertions(+), 15 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 02df9a794530..2ddf0854c24d 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -562,10 +562,19 @@ struct kvm_vm *vm_create_default_with_vcpus(uint32_t nr_vcpus, uint64_t extra_me
uint32_t vcpuids[]);
/* Like vm_create_default_with_vcpus, but accepts mode and slot0 memory as a parameter */
-struct kvm_vm *vm_create_with_vcpus(enum vm_guest_mode mode, uint32_t nr_vcpus,
- uint64_t slot0_mem_pages, uint64_t extra_mem_pages,
- uint32_t num_percpu_pages, void *guest_code,
- uint32_t vcpuids[]);
+struct kvm_vm *__vm_create_with_vcpus(enum vm_guest_mode mode, uint32_t nr_vcpus,
+ uint64_t slot0_mem_pages, uint64_t extra_mem_pages,
+ uint32_t num_percpu_pages, void *guest_code,
+ uint32_t vcpuids[], struct kvm_vcpu *vcpus[]);
+
+static inline struct kvm_vm *vm_create_with_vcpus(uint32_t nr_vcpus,
+ void *guest_code,
+ struct kvm_vcpu *vcpus[])
+{
+ return __vm_create_with_vcpus(VM_MODE_DEFAULT, nr_vcpus,
+ DEFAULT_GUEST_PHY_PAGES, 0, 0,
+ guest_code, NULL, vcpus);
+}
/*
* Create a VM with a single vCPU with reasonable defaults and @extra_mem_pages
diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c
index 2c4a7563a4f8..e91bc7f1400d 100644
--- a/tools/testing/selftests/kvm/kvm_page_table_test.c
+++ b/tools/testing/selftests/kvm/kvm_page_table_test.c
@@ -268,8 +268,8 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg)
/* Create a VM with enough guest pages */
guest_num_pages = test_mem_size / guest_page_size;
- vm = vm_create_with_vcpus(mode, nr_vcpus, DEFAULT_GUEST_PHY_PAGES,
- guest_num_pages, 0, guest_code, NULL);
+ vm = __vm_create_with_vcpus(mode, nr_vcpus, DEFAULT_GUEST_PHY_PAGES,
+ guest_num_pages, 0, guest_code, NULL, NULL);
/* Align down GPA of the testing memslot */
if (!p->phys_offset)
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index bd9eb23edf3b..838a3eda9381 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -300,12 +300,13 @@ struct kvm_vm *__vm_create(enum vm_guest_mode mode, uint64_t nr_pages)
* extra_mem_pages is only used to calculate the maximum page table size,
* no real memory allocation for non-slot0 memory in this function.
*/
-struct kvm_vm *vm_create_with_vcpus(enum vm_guest_mode mode, uint32_t nr_vcpus,
- uint64_t slot0_mem_pages, uint64_t extra_mem_pages,
- uint32_t num_percpu_pages, void *guest_code,
- uint32_t vcpuids[])
+struct kvm_vm *__vm_create_with_vcpus(enum vm_guest_mode mode, uint32_t nr_vcpus,
+ uint64_t slot0_mem_pages, uint64_t extra_mem_pages,
+ uint32_t num_percpu_pages, void *guest_code,
+ uint32_t vcpuids[], struct kvm_vcpu *vcpus[])
{
uint64_t vcpu_pages, extra_pg_pages, pages;
+ struct kvm_vcpu *vcpu;
struct kvm_vm *vm;
int i;
@@ -332,7 +333,9 @@ struct kvm_vm *vm_create_with_vcpus(enum vm_guest_mode mode, uint32_t nr_vcpus,
for (i = 0; i < nr_vcpus; ++i) {
uint32_t vcpuid = vcpuids ? vcpuids[i] : i;
- vm_vcpu_add(vm, vcpuid, guest_code);
+ vcpu = vm_vcpu_add(vm, vcpuid, guest_code);
+ if (vcpus)
+ vcpus[i] = vcpu;
}
return vm;
@@ -342,8 +345,8 @@ struct kvm_vm *vm_create_default_with_vcpus(uint32_t nr_vcpus, uint64_t extra_me
uint32_t num_percpu_pages, void *guest_code,
uint32_t vcpuids[])
{
- return vm_create_with_vcpus(VM_MODE_DEFAULT, nr_vcpus, DEFAULT_GUEST_PHY_PAGES,
- extra_mem_pages, num_percpu_pages, guest_code, vcpuids);
+ return __vm_create_with_vcpus(VM_MODE_DEFAULT, nr_vcpus, DEFAULT_GUEST_PHY_PAGES,
+ extra_mem_pages, num_percpu_pages, guest_code, vcpuids, NULL);
}
struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
diff --git a/tools/testing/selftests/kvm/lib/perf_test_util.c b/tools/testing/selftests/kvm/lib/perf_test_util.c
index 722df3a28791..5b80ba7f12e4 100644
--- a/tools/testing/selftests/kvm/lib/perf_test_util.c
+++ b/tools/testing/selftests/kvm/lib/perf_test_util.c
@@ -139,8 +139,8 @@ struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
* The memory is also added to memslot 0, but that's a benign side
* effect as KVM allows aliasing HVAs in meslots.
*/
- vm = vm_create_with_vcpus(mode, vcpus, DEFAULT_GUEST_PHY_PAGES,
- guest_num_pages, 0, guest_code, NULL);
+ vm = __vm_create_with_vcpus(mode, vcpus, DEFAULT_GUEST_PHY_PAGES,
+ guest_num_pages, 0, guest_code, NULL, NULL);
pta->vm = vm;
--
2.36.0.464.gb9c8b46e94-goog
