This test tries to setup routes which have address + offset combinations which cross a page. Signed-off-by: Janosch Frank --- tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/s390/irq_routing.c | 75 +++++++++++++++++++ 2 files changed, 76 insertions(+) create mode 100644 tools/testing/selftests/kvm/s390/irq_routing.c diff --git a/tools/testing/selftests/kvm/Makefile.kvm b/tools/testing/selftests/kvm/Makefile.kvm index 7cfdfe7edfbf..c757704a0cb7 100644 --- a/tools/testing/selftests/kvm/Makefile.kvm +++ b/tools/testing/selftests/kvm/Makefile.kvm @@ -201,6 +201,7 @@ TEST_GEN_PROGS_s390 += s390/ucontrol_test TEST_GEN_PROGS_s390 += s390/user_operexec TEST_GEN_PROGS_s390 += s390/keyop TEST_GEN_PROGS_s390 += rseq_test +TEST_GEN_PROGS_s390 += s390/irq_routing TEST_GEN_PROGS_riscv = $(TEST_GEN_PROGS_COMMON) TEST_GEN_PROGS_riscv += riscv/sbi_pmu_test diff --git a/tools/testing/selftests/kvm/s390/irq_routing.c b/tools/testing/selftests/kvm/s390/irq_routing.c new file mode 100644 index 000000000000..4d9b5df2e456 --- /dev/null +++ b/tools/testing/selftests/kvm/s390/irq_routing.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * IRQ routing offset tests. + * + * Copyright IBM Corp. 2026 + * + * Authors: + * Janosch Frank + */ +#include +#include +#include +#include + +#include "test_util.h" +#include "kvm_util.h" +#include "kselftest.h" +#include "ucall_common.h" + +extern char guest_code[]; +asm("guest_code:\n" + "diag %r0,%r0,0\n" + "j .\n"); + +static void test(void) +{ + struct kvm_irq_routing *routing; + struct kvm_vcpu *vcpu; + struct kvm_vm *vm; + vm_paddr_t mem; + int ret; + + struct kvm_irq_routing_entry ue = { + .type = KVM_IRQ_ROUTING_S390_ADAPTER, + .gsi = 1, + }; + + vm = vm_create_with_one_vcpu(&vcpu, guest_code); + mem = vm_phy_pages_alloc(vm, 2, 4096 * 42, 0); + + routing = kvm_gsi_routing_create(); + routing->nr = 1; + routing->entries[0] = ue; + routing->entries[0].u.adapter.summary_addr = (uintptr_t)mem; + routing->entries[0].u.adapter.ind_addr = (uintptr_t)mem; + + routing->entries[0].u.adapter.summary_offset = 4096 * 8; + ret = __vm_ioctl(vm, KVM_SET_GSI_ROUTING, routing); + ksft_test_result(ret == -1 && errno == EINVAL, "summary offset outside of page\n"); + + routing->entries[0].u.adapter.summary_offset -= 8; + ret = __vm_ioctl(vm, KVM_SET_GSI_ROUTING, routing); + ksft_test_result(ret == 0, "summary offset inside of page\n"); + + routing->entries[0].u.adapter.ind_offset = 4096 * 8; + ret = __vm_ioctl(vm, KVM_SET_GSI_ROUTING, routing); + ksft_test_result(ret == -1 && errno == EINVAL, "ind offset outside of page\n"); + + routing->entries[0].u.adapter.ind_offset -= 8; + ret = __vm_ioctl(vm, KVM_SET_GSI_ROUTING, routing); + ksft_test_result(ret == 0, "ind offset inside of page\n"); + + kvm_vm_free(vm); +} + +int main(int argc, char *argv[]) +{ + TEST_REQUIRE(kvm_has_cap(KVM_CAP_IRQ_ROUTING)); + + ksft_print_header(); + ksft_set_plan(4); + test(); + + ksft_finished(); /* Print results and exit() accordingly */ +} -- 2.53.0