[RFC PATCH 089/105] KVM: selftests: Convert xapic_ipi_test away from *_VCPU_ID

Sean Christopherson
2022-03-11T05:59:44Z

.../selftests/kvm/x86_64/xapic_ipi_test.c | 48 ++++++++-----------
1 file changed, 20 insertions(+), 28 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c
index 8b366652be31..4484ee563b18 100644
--- a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c
+++ b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c
@@ -39,9 +39,6 @@
/* Default delay between migrate_pages calls (microseconds) */
#define DEFAULT_DELAY_USECS 500000

-#define HALTER_VCPU_ID 0
-#define SENDER_VCPU_ID 1
-
/*
* Vector for IPI from sender vCPU to halting vCPU.
* Value is arbitrary and was chosen for the alternating bit pattern. Any
@@ -79,8 +76,7 @@ struct test_data_page {

struct thread_params {
struct test_data_page *data;
- struct kvm_vm *vm;
- uint32_t vcpu_id;
+ struct kvm_vcpu *vcpu;
uint64_t *pipis_rcvd; /* host address of ipis_rcvd global */
};

@@ -198,6 +194,7 @@ static void sender_guest_code(struct test_data_page *data)
static void *vcpu_thread(void *arg)
{
struct thread_params *params = (struct thread_params *)arg;
+ struct kvm_vcpu *vcpu = params->vcpu;
struct ucall uc;
int old;
int r;
@@ -206,17 +203,17 @@ static void *vcpu_thread(void *arg)
r = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old);
TEST_ASSERT(r == 0,
"pthread_setcanceltype failed on vcpu_id=%u with errno=%d",
- params->vcpu_id, r);
+ vcpu->id, r);

- fprintf(stderr, "vCPU thread running vCPU %u\n", params->vcpu_id);
- vcpu_run(params->vm, params->vcpu_id);
- exit_reason = vcpu_state(params->vm, params->vcpu_id)->exit_reason;
+ fprintf(stderr, "vCPU thread running vCPU %u\n", vcpu->id);
+ vcpu_run(vcpu->vm, vcpu->id);
+ exit_reason = vcpu->run->exit_reason;

TEST_ASSERT(exit_reason == KVM_EXIT_IO,
"vCPU %u exited with unexpected exit reason %u-%s, expected KVM_EXIT_IO",
- params->vcpu_id, exit_reason, exit_reason_str(exit_reason));
+ vcpu->id, exit_reason, exit_reason_str(exit_reason));

- if (get_ucall(params->vm, params->vcpu_id, &uc) == UCALL_ABORT) {
+ if (get_ucall(vcpu->vm, vcpu->id, &uc) == UCALL_ABORT) {
TEST_ASSERT(false,
"vCPU %u exited with error: %s.\n"
"Sending vCPU sent %lu IPIs to halting vCPU\n"
@@ -224,7 +221,7 @@ static void *vcpu_thread(void *arg)
"Halter TPR=%#x PPR=%#x LVR=%#x\n"
"Migrations attempted: %lu\n"
"Migrations completed: %lu\n",
- params->vcpu_id, (const char *)uc.args[0],
+ vcpu->id, (const char *)uc.args[0],
params->data->ipis_sent, params->data->hlt_count,
params->data->wake_count,
*params->pipis_rcvd, params->data->halter_tpr,
@@ -236,7 +233,7 @@ static void *vcpu_thread(void *arg)
return NULL;
}

-static void cancel_join_vcpu_thread(pthread_t thread, uint32_t vcpu_id)
+static void cancel_join_vcpu_thread(pthread_t thread, struct kvm_vcpu *vcpu)
{
void *retval;
int r;
@@ -244,12 +241,12 @@ static void cancel_join_vcpu_thread(pthread_t thread, uint32_t vcpu_id)
r = pthread_cancel(thread);
TEST_ASSERT(r == 0,
"pthread_cancel on vcpu_id=%d failed with errno=%d",
- vcpu_id, r);
+ vcpu->id, r);

r = pthread_join(thread, &retval);
TEST_ASSERT(r == 0,
"pthread_join on vcpu_id=%d failed with errno=%d",
- vcpu_id, r);
+ vcpu->id, r);
TEST_ASSERT(retval == PTHREAD_CANCELED,
"expected retval=%p, got %p", PTHREAD_CANCELED,
retval);
@@ -415,34 +412,30 @@ int main(int argc, char *argv[])
if (delay_usecs <= 0)
delay_usecs = DEFAULT_DELAY_USECS;

- vm = vm_create_default(HALTER_VCPU_ID, 0, halter_guest_code);
- params[0].vm = vm;
- params[1].vm = vm;
+ vm = vm_create_with_one_vcpu(&params[0].vcpu, halter_guest_code);

vm_init_descriptor_tables(vm);
- vcpu_init_descriptor_tables(vm, HALTER_VCPU_ID);
+ vcpu_init_descriptor_tables(vm, params[0].vcpu->id);
vm_install_exception_handler(vm, IPI_VECTOR, guest_ipi_handler);

virt_pg_map(vm, APIC_DEFAULT_GPA, APIC_DEFAULT_GPA);

- vm_vcpu_add(vm, SENDER_VCPU_ID, sender_guest_code);
+ params[1].vcpu = vm_vcpu_add(vm, 1, sender_guest_code);

test_data_page_vaddr = vm_vaddr_alloc_page(vm);
- data =
- (struct test_data_page *)addr_gva2hva(vm, test_data_page_vaddr);
+ data = addr_gva2hva(vm, test_data_page_vaddr);
memset(data, 0, sizeof(*data));
params[0].data = data;
params[1].data = data;

- vcpu_args_set(vm, HALTER_VCPU_ID, 1, test_data_page_vaddr);
- vcpu_args_set(vm, SENDER_VCPU_ID, 1, test_data_page_vaddr);
+ vcpu_args_set(vm, params[0].vcpu->id, 1, test_data_page_vaddr);
+ vcpu_args_set(vm, params[1].vcpu->id, 1, test_data_page_vaddr);

pipis_rcvd = (uint64_t *)addr_gva2hva(vm, (uint64_t)&ipis_rcvd);
params[0].pipis_rcvd = pipis_rcvd;
params[1].pipis_rcvd = pipis_rcvd;

/* Start halter vCPU thread and wait for it to execute first HLT. */
- params[0].vcpu_id = HALTER_VCPU_ID;
r = pthread_create(&threads[0], NULL, vcpu_thread, &params[0]);
TEST_ASSERT(r == 0,
"pthread_create halter failed errno=%d", errno);
@@ -462,7 +455,6 @@ int main(int argc, char *argv[])
"Halter vCPU thread reported its APIC ID: %u after %d seconds.\n",
data->halter_apic_id, wait_secs);

- params[1].vcpu_id = SENDER_VCPU_ID;
r = pthread_create(&threads[1], NULL, vcpu_thread, &params[1]);
TEST_ASSERT(r == 0, "pthread_create sender failed errno=%d", errno);

@@ -478,8 +470,8 @@ int main(int argc, char *argv[])
/*
* Cancel threads and wait for them to stop.
*/
- cancel_join_vcpu_thread(threads[0], HALTER_VCPU_ID);
- cancel_join_vcpu_thread(threads[1], SENDER_VCPU_ID);
+ cancel_join_vcpu_thread(threads[0], params[0].vcpu);
+ cancel_join_vcpu_thread(threads[1], params[1].vcpu);

fprintf(stderr,
"Test successful after running for %d seconds.\n"
--
2.35.1.723.g4982287a31-goog