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Subject[PATCH v2 053/144] KVM: selftests: Convert vmx_preemption_timer_test away from VCPU_ID
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Convert vmx_preemption_timer_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==5. 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>
---
.../kvm/x86_64/vmx_preemption_timer_test.c | 30 +++++++++----------
1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/vmx_preemption_timer_test.c b/tools/testing/selftests/kvm/x86_64/vmx_preemption_timer_test.c
index f5b4ae914131..168adc5b2272 100644
--- a/tools/testing/selftests/kvm/x86_64/vmx_preemption_timer_test.c
+++ b/tools/testing/selftests/kvm/x86_64/vmx_preemption_timer_test.c
@@ -22,7 +22,6 @@
#include "processor.h"
#include "vmx.h"

-#define VCPU_ID 5
#define PREEMPTION_TIMER_VALUE 100000000ull
#define PREEMPTION_TIMER_VALUE_THRESHOLD1 80000000ull

@@ -159,6 +158,7 @@ int main(int argc, char *argv[])
struct kvm_regs regs1, regs2;
struct kvm_vm *vm;
struct kvm_run *run;
+ struct kvm_vcpu *vcpu;
struct kvm_x86_state *state;
struct ucall uc;
int stage;
@@ -175,22 +175,22 @@ int main(int argc, char *argv[])
}

/* Create VM */
- vm = vm_create_default(VCPU_ID, 0, guest_code);
- run = vcpu_state(vm, VCPU_ID);
+ vm = vm_create_with_one_vcpu(&vcpu, guest_code);
+ run = vcpu->run;

- vcpu_regs_get(vm, VCPU_ID, &regs1);
+ vcpu_regs_get(vm, vcpu->id, &regs1);

vcpu_alloc_vmx(vm, &vmx_pages_gva);
- vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
+ vcpu_args_set(vm, vcpu->id, 1, vmx_pages_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]);
@@ -232,22 +232,22 @@ int main(int argc, char *argv[])
stage, uc.args[4], uc.args[5]);
}

- state = vcpu_save_state(vm, VCPU_ID);
+ state = vcpu_save_state(vm, vcpu->id);
memset(&regs1, 0, sizeof(regs1));
- vcpu_regs_get(vm, VCPU_ID, &regs1);
+ vcpu_regs_get(vm, vcpu->id, &regs1);

kvm_vm_release(vm);

/* Restore state in a new VM. */
- kvm_vm_restart(vm);
- vm_vcpu_add(vm, VCPU_ID);
- vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
- vcpu_load_state(vm, VCPU_ID, state);
- run = vcpu_state(vm, VCPU_ID);
+ vcpu = vm_recreate_with_one_vcpu(vm);
+
+ vcpu_set_cpuid(vm, vcpu->id, kvm_get_supported_cpuid());
+ vcpu_load_state(vm, vcpu->id, state);
+ run = vcpu->run;
kvm_x86_state_cleanup(state);

memset(&regs2, 0, sizeof(regs2));
- vcpu_regs_get(vm, VCPU_ID, &regs2);
+ vcpu_regs_get(vm, vcpu->id, &regs2);
TEST_ASSERT(!memcmp(&regs1, &regs2, sizeof(regs2)),
"Unexpected register values after vcpu_load_state; rdi: %lx rsi: %lx",
(ulong) regs2.rdi, (ulong) regs2.rsi);
--
2.36.1.255.ge46751e96f-goog
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