[PATCH 067/128] KVM: selftests: Convert kvm_clock_test away from VCPU_ID

Sean Christopherson
2022-05-04T22:53:37Z

Convert kvm_clock_test to use vm_create_with_one_vcpu() and pass around a
'struct kvm_vcpu' object instead of using a global VCPU_ID.

Opportunistically use vcpu_run() instead of _vcpu_run() with an open
coded assert that KVM_RUN succeeded.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
.../selftests/kvm/x86_64/kvm_clock_test.c | 23 ++++++++-----------
1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c b/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c
index 97731454f3f3..2c1f850c4053 100644
--- a/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c
+++ b/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c
@@ -16,8 +16,6 @@
#include "kvm_util.h"
#include "processor.h"

-#define VCPU_ID 0
-
struct test_case {
uint64_t kvmclock_base;
int64_t realtime_offset;
@@ -105,29 +103,27 @@ static void setup_clock(struct kvm_vm *vm, struct test_case *test_case)
vm_ioctl(vm, KVM_SET_CLOCK, &data);
}

-static void enter_guest(struct kvm_vm *vm)
+static void enter_guest(struct kvm_vcpu *vcpu)
{
struct kvm_clock_data start, end;
- struct kvm_run *run;
+ struct kvm_run *run = vcpu->run;
+ struct kvm_vm *vm = vcpu->vm;
struct ucall uc;
- int i, r;
-
- run = vcpu_state(vm, VCPU_ID);
+ int i;

for (i = 0; i < ARRAY_SIZE(test_cases); i++) {
setup_clock(vm, &test_cases[i]);

vm_ioctl(vm, KVM_GET_CLOCK, &start);

- r = _vcpu_run(vm, VCPU_ID);
+ vcpu_run(vcpu->vm, vcpu->id);
vm_ioctl(vm, KVM_GET_CLOCK, &end);

- TEST_ASSERT(!r, "vcpu_run failed: %d\n", r);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"unexpected exit reason: %u (%s)",
run->exit_reason, exit_reason_str(run->exit_reason));

- switch (get_ucall(vm, VCPU_ID, &uc)) {
+ switch (get_ucall(vcpu->vm, vcpu->id, &uc)) {
case UCALL_SYNC:
handle_sync(&uc, &start, &end);
break;
@@ -178,6 +174,7 @@ static void check_clocksource(void)

int main(void)
{
+ struct kvm_vcpu *vcpu;
vm_vaddr_t pvti_gva;
vm_paddr_t pvti_gpa;
struct kvm_vm *vm;
@@ -192,12 +189,12 @@ int main(void)

check_clocksource();

- vm = vm_create_default(VCPU_ID, 0, guest_main);
+ vm = vm_create_with_one_vcpu(&vcpu, guest_main);

pvti_gva = vm_vaddr_alloc(vm, getpagesize(), 0x10000);
pvti_gpa = addr_gva2gpa(vm, pvti_gva);
- vcpu_args_set(vm, VCPU_ID, 2, pvti_gpa, pvti_gva);
+ vcpu_args_set(vm, vcpu->id, 2, pvti_gpa, pvti_gva);

- enter_guest(vm);
+ enter_guest(vcpu);
kvm_vm_free(vm);
}
--
2.36.0.464.gb9c8b46e94-goog