Check that a GICv3 ITS and a GICv5 VGIC cannot be paired, regardless of which device is created first. Skip the check when the host does not expose a GICv3 ITS. Signed-off-by: Sascha Bischoff --- tools/testing/selftests/kvm/arm64/vgic_v5.c | 32 +++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/tools/testing/selftests/kvm/arm64/vgic_v5.c b/tools/testing/selftests/kvm/arm64/vgic_v5.c index d5df742b23001..5bf7d99d29147 100644 --- a/tools/testing/selftests/kvm/arm64/vgic_v5.c +++ b/tools/testing/selftests/kvm/arm64/vgic_v5.c @@ -2003,8 +2003,40 @@ int test_kvm_device(u32 gic_dev_type) return 0; } +static void test_vgic_v3_its_with_vgic_v5(void) +{ + struct kvm_vm *vm = vm_create_barebones(); + int gic_fd, its_fd, ret; + + if (__kvm_test_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_ITS)) { + pr_info("No GICv3 ITS support; skipping mixed-model test.\n"); + kvm_vm_free(vm); + return; + } + + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V5); + ret = __kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_ITS); + TEST_ASSERT(ret < 0 && errno == ENODEV, + "GICv3 ITS created after GICv5 VGIC: ret=%d errno=%d", + ret, errno); + close(gic_fd); + kvm_vm_free(vm); + + vm = vm_create_barebones(); + its_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_ITS); + ret = __kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V5); + TEST_ASSERT(ret < 0 && errno == ENODEV, + "GICv5 VGIC created after GICv3 ITS: ret=%d errno=%d", + ret, errno); + close(its_fd); + kvm_vm_free(vm); +} + void run_tests(u32 gic_dev_type) { + pr_info("Test VGICv5 and GICv3 ITS model mismatch\n"); + test_vgic_v3_its_with_vgic_v5(); + pr_info("Test VGICv5 address attrs\n"); test_vgic_v5_addr_attrs(); -- 2.34.1