[PATCH 01/13] KVM: selftests: Automatically do init_ucall() for non-barebones VMs

From: Sean Christopherson
Date: Thu Aug 18 2022 - 18:15:57 EST

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Do init_ucall() automatically during VM creation in preparation for
making ucall initialization meaningful on all architectures. aarch64 is
currently the only arch that needs to do any setup, but that will change
in the future by switching to a pool-based implementation (instead of the
current stack-based approach).

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
tools/testing/selftests/kvm/aarch64/arch_timer.c | 1 -
tools/testing/selftests/kvm/aarch64/debug-exceptions.c | 1 -
tools/testing/selftests/kvm/aarch64/hypercalls.c | 1 -
tools/testing/selftests/kvm/aarch64/psci_test.c | 1 -
tools/testing/selftests/kvm/aarch64/vgic_init.c | 2 --
tools/testing/selftests/kvm/aarch64/vgic_irq.c | 1 -
tools/testing/selftests/kvm/dirty_log_test.c | 2 --
tools/testing/selftests/kvm/kvm_page_table_test.c | 1 -
tools/testing/selftests/kvm/lib/kvm_util.c | 3 +++
tools/testing/selftests/kvm/lib/perf_test_util.c | 2 --
tools/testing/selftests/kvm/memslot_perf_test.c | 1 -
tools/testing/selftests/kvm/rseq_test.c | 1 -
tools/testing/selftests/kvm/steal_time.c | 1 -
tools/testing/selftests/kvm/system_counter_offset_test.c | 1 -
14 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/tools/testing/selftests/kvm/aarch64/arch_timer.c b/tools/testing/selftests/kvm/aarch64/arch_timer.c
index 574eb73f0e90..37c0ddebf4db 100644
--- a/tools/testing/selftests/kvm/aarch64/arch_timer.c
+++ b/tools/testing/selftests/kvm/aarch64/arch_timer.c
@@ -375,7 +375,6 @@ static struct kvm_vm *test_vm_create(void)
for (i = 0; i < nr_vcpus; i++)
vcpu_init_descriptor_tables(vcpus[i]);

- ucall_init(vm, NULL);
test_init_timer_irq(vm);
gic_fd = vgic_v3_setup(vm, nr_vcpus, 64, GICD_BASE_GPA, GICR_BASE_GPA);
__TEST_REQUIRE(gic_fd >= 0, "Failed to create vgic-v3");
diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
index 2ee35cf9801e..eaf225fd2a4a 100644
--- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
+++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
@@ -254,7 +254,6 @@ int main(int argc, char *argv[])
int stage;

vm = vm_create_with_one_vcpu(&vcpu, guest_code);
- ucall_init(vm, NULL);

vm_init_descriptor_tables(vm);
vcpu_init_descriptor_tables(vcpu);
diff --git a/tools/testing/selftests/kvm/aarch64/hypercalls.c b/tools/testing/selftests/kvm/aarch64/hypercalls.c
index a39da3fe4952..3dceecfd1f62 100644
--- a/tools/testing/selftests/kvm/aarch64/hypercalls.c
+++ b/tools/testing/selftests/kvm/aarch64/hypercalls.c
@@ -236,7 +236,6 @@ static struct kvm_vm *test_vm_create(struct kvm_vcpu **vcpu)

vm = vm_create_with_one_vcpu(vcpu, guest_code);

- ucall_init(vm, NULL);
steal_time_init(*vcpu);

return vm;
diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c
index f7621f6e938e..56278f3df891 100644
--- a/tools/testing/selftests/kvm/aarch64/psci_test.c
+++ b/tools/testing/selftests/kvm/aarch64/psci_test.c
@@ -77,7 +77,6 @@ static struct kvm_vm *setup_vm(void *guest_code, struct kvm_vcpu **source,
struct kvm_vm *vm;

vm = vm_create(2);
- ucall_init(vm, NULL);

vm_ioctl(vm, KVM_ARM_PREFERRED_TARGET, &init);
init.features[0] |= (1 << KVM_ARM_VCPU_PSCI_0_2);
diff --git a/tools/testing/selftests/kvm/aarch64/vgic_init.c b/tools/testing/selftests/kvm/aarch64/vgic_init.c
index e05ecb31823f..cc828fb53d8f 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_init.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_init.c
@@ -68,8 +68,6 @@ static void guest_code(void)
/* we don't want to assert on run execution, hence that helper */
static int run_vcpu(struct kvm_vcpu *vcpu)
{
- ucall_init(vcpu->vm, NULL);
-
return __vcpu_run(vcpu) ? -errno : 0;
}

diff --git a/tools/testing/selftests/kvm/aarch64/vgic_irq.c b/tools/testing/selftests/kvm/aarch64/vgic_irq.c
index 17417220a083..d1817f852daf 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_irq.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_irq.c
@@ -756,7 +756,6 @@ static void test_vgic(uint32_t nr_irqs, bool level_sensitive, bool eoi_split)
print_args(&args);

vm = vm_create_with_one_vcpu(&vcpu, guest_code);
- ucall_init(vm, NULL);

vm_init_descriptor_tables(vm);
vcpu_init_descriptor_tables(vcpu);
diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c
index 9c883c94d478..583b46250d07 100644
--- a/tools/testing/selftests/kvm/dirty_log_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_test.c
@@ -754,8 +754,6 @@ static void run_test(enum vm_guest_mode mode, void *arg)
/* Cache the HVA pointer of the region */
host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)guest_test_phys_mem);

- ucall_init(vm, NULL);
-
/* Export the shared variables to the guest */
sync_global_to_guest(vm, host_page_size);
sync_global_to_guest(vm, guest_page_size);
diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c
index f42c6ac6d71d..20533c48ba3d 100644
--- a/tools/testing/selftests/kvm/kvm_page_table_test.c
+++ b/tools/testing/selftests/kvm/kvm_page_table_test.c
@@ -289,7 +289,6 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg)
host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)guest_test_phys_mem);

/* Export shared structure test_args to guest */
- ucall_init(vm, NULL);
sync_global_to_guest(vm, test_args);

ret = sem_init(&test_stage_updated, 0, 0);
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 9889fe0d8919..ea679987f038 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -301,6 +301,9 @@ struct kvm_vm *__vm_create(enum vm_guest_mode mode, uint32_t nr_runnable_vcpus,
#ifdef __x86_64__
vm_create_irqchip(vm);
#endif
+
+ ucall_init(vm, NULL);
+
return vm;
}

diff --git a/tools/testing/selftests/kvm/lib/perf_test_util.c b/tools/testing/selftests/kvm/lib/perf_test_util.c
index 9618b37c66f7..5161fa68cdf3 100644
--- a/tools/testing/selftests/kvm/lib/perf_test_util.c
+++ b/tools/testing/selftests/kvm/lib/perf_test_util.c
@@ -209,8 +209,6 @@ struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int nr_vcpus,
perf_test_setup_nested(vm, nr_vcpus, vcpus);
}

- ucall_init(vm, NULL);
-
/* Export the shared variables to the guest. */
sync_global_to_guest(vm, perf_test_args);

diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c
index 44995446d942..4ed5acd74278 100644
--- a/tools/testing/selftests/kvm/memslot_perf_test.c
+++ b/tools/testing/selftests/kvm/memslot_perf_test.c
@@ -277,7 +277,6 @@ static bool prepare_vm(struct vm_data *data, int nslots, uint64_t *maxslots,
TEST_ASSERT(data->hva_slots, "malloc() fail");

data->vm = __vm_create_with_one_vcpu(&data->vcpu, mempages, guest_code);
- ucall_init(data->vm, NULL);

pr_info_v("Adding slots 1..%i, each slot with %"PRIu64" pages + %"PRIu64" extra pages last\n",
max_mem_slots - 1, data->pages_per_slot, rempages);
diff --git a/tools/testing/selftests/kvm/rseq_test.c b/tools/testing/selftests/kvm/rseq_test.c
index fac248a43666..8dc745effb5e 100644
--- a/tools/testing/selftests/kvm/rseq_test.c
+++ b/tools/testing/selftests/kvm/rseq_test.c
@@ -224,7 +224,6 @@ int main(int argc, char *argv[])
* CPU affinity.
*/
vm = vm_create_with_one_vcpu(&vcpu, guest_code);
- ucall_init(vm, NULL);

pthread_create(&migration_thread, NULL, migration_worker,
(void *)(unsigned long)gettid());
diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c
index db8967f1a17b..c87f38712073 100644
--- a/tools/testing/selftests/kvm/steal_time.c
+++ b/tools/testing/selftests/kvm/steal_time.c
@@ -266,7 +266,6 @@ int main(int ac, char **av)
gpages = vm_calc_num_guest_pages(VM_MODE_DEFAULT, STEAL_TIME_SIZE * NR_VCPUS);
vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, ST_GPA_BASE, 1, gpages, 0);
virt_map(vm, ST_GPA_BASE, ST_GPA_BASE, gpages);
- ucall_init(vm, NULL);

TEST_REQUIRE(is_steal_time_supported(vcpus[0]));

diff --git a/tools/testing/selftests/kvm/system_counter_offset_test.c b/tools/testing/selftests/kvm/system_counter_offset_test.c
index 1c274933912b..7f5b330b6a1b 100644
--- a/tools/testing/selftests/kvm/system_counter_offset_test.c
+++ b/tools/testing/selftests/kvm/system_counter_offset_test.c
@@ -121,7 +121,6 @@ int main(void)

vm = vm_create_with_one_vcpu(&vcpu, guest_main);
check_preconditions(vcpu);
- ucall_init(vm, NULL);

enter_guest(vcpu);
kvm_vm_free(vm);
--
2.37.1.595.g718a3a8f04-goog

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Next message: Robert Marko: "[PATCH v8 1/5] dt-bindings: mfd: qcom-spmi-pmic: add support for PMP8074"
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