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| author | David Matlack <dmatlack@google.com> | 2021-08-05 17:28:21 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-08-06 10:01:40 -0400 |
| commit | 32bdc01988413031c6e743714c2b40bdd773e5db (patch) | |
| tree | 89d397f731c7bcc0ea7bec4a0f7dabf76878cf24 /tools | |
| parent | 609e6202ea5f4ab5fa6f6bed9da5594e3e94c570 (diff) | |
| download | linux-32bdc01988413031c6e743714c2b40bdd773e5db.tar.gz linux-32bdc01988413031c6e743714c2b40bdd773e5db.tar.xz | |
KVM: selftests: Move vcpu_args_set into perf_test_util
perf_test_util is used to set up KVM selftests where vCPUs touch a
region of memory. The guest code is implemented in perf_test_util.c (not
the calling selftests). The guest code requires a 1 parameter, the
vcpuid, which has to be set by calling vcpu_args_set(vm, vcpu_id, 1,
vcpu_id).
Today all of the selftests that use perf_test_util are making this call.
Instead, perf_test_util should just do it. This will save some code but
more importantly prevents mistakes since totally non-obvious that this
needs to be called and failing to do so results in vCPUs not accessing
the right regions of memory.
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20210805172821.2622793-1-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools')
5 files changed, 2 insertions, 5 deletions
diff --git a/tools/testing/selftests/kvm/access_tracking_perf_test.c b/tools/testing/selftests/kvm/access_tracking_perf_test.c index 3e23b2105f4b..71e277c7c3f3 100644 --- a/tools/testing/selftests/kvm/access_tracking_perf_test.c +++ b/tools/testing/selftests/kvm/access_tracking_perf_test.c @@ -222,8 +222,6 @@ static void *vcpu_thread_main(void *arg) int vcpu_id = vcpu_args->vcpu_id; int current_iteration = -1; - vcpu_args_set(vm, vcpu_id, 1, vcpu_id); - while (spin_wait_for_next_iteration(¤t_iteration)) { switch (READ_ONCE(iteration_work)) { case ITERATION_ACCESS_MEMORY: diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c index 61266a729d88..e79c1b64977f 100644 --- a/tools/testing/selftests/kvm/demand_paging_test.c +++ b/tools/testing/selftests/kvm/demand_paging_test.c @@ -52,7 +52,6 @@ static void *vcpu_worker(void *data) struct timespec start; struct timespec ts_diff; - vcpu_args_set(vm, vcpu_id, 1, vcpu_id); run = vcpu_state(vm, vcpu_id); clock_gettime(CLOCK_MONOTONIC, &start); diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c index 034458dd89a2..3c30d0045d8d 100644 --- a/tools/testing/selftests/kvm/dirty_log_perf_test.c +++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c @@ -44,7 +44,6 @@ static void *vcpu_worker(void *data) struct perf_test_vcpu_args *vcpu_args = (struct perf_test_vcpu_args *)data; int vcpu_id = vcpu_args->vcpu_id; - vcpu_args_set(vm, vcpu_id, 1, vcpu_id); run = vcpu_state(vm, vcpu_id); while (!READ_ONCE(host_quit)) { diff --git a/tools/testing/selftests/kvm/lib/perf_test_util.c b/tools/testing/selftests/kvm/lib/perf_test_util.c index aebb223d34a7..0ef80dbdc116 100644 --- a/tools/testing/selftests/kvm/lib/perf_test_util.c +++ b/tools/testing/selftests/kvm/lib/perf_test_util.c @@ -150,6 +150,8 @@ void perf_test_setup_vcpus(struct kvm_vm *vm, int vcpus, vcpu_gpa = guest_test_phys_mem; } + vcpu_args_set(vm, vcpu_id, 1, vcpu_id); + pr_debug("Added VCPU %d with test mem gpa [%lx, %lx)\n", vcpu_id, vcpu_gpa, vcpu_gpa + (vcpu_args->pages * perf_test_args.guest_page_size)); diff --git a/tools/testing/selftests/kvm/memslot_modification_stress_test.c b/tools/testing/selftests/kvm/memslot_modification_stress_test.c index 8a9c6ccce3ca..4cfcafea9f5a 100644 --- a/tools/testing/selftests/kvm/memslot_modification_stress_test.c +++ b/tools/testing/selftests/kvm/memslot_modification_stress_test.c @@ -45,7 +45,6 @@ static void *vcpu_worker(void *data) struct kvm_vm *vm = perf_test_args.vm; struct kvm_run *run; - vcpu_args_set(vm, vcpu_id, 1, vcpu_id); run = vcpu_state(vm, vcpu_id); /* Let the guest access its memory until a stop signal is received */ |