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Tue, 3 Mar 2026 13:54:03 +0000 (GMT) From: Janosch Frank To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, mjrosato@linux.ibm.com, freimuth@linux.ibm.com, imbrenda@linux.ibm.com, borntraeger@linux.ibm.com Subject: [PATCH v2 2/2] KVM: s390: selftests: Add IRQ routing address offset tests Date: Tue, 3 Mar 2026 13:46:35 +0000 Message-ID: <20260303135250.3665-3-frankja@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260303135250.3665-1-frankja@linux.ibm.com> References: <20260303135250.3665-1-frankja@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: hu8jThj64-NmMvihnyO_7Zsnclwxtaso X-Authority-Analysis: v=2.4 cv=b66/I9Gx c=1 sm=1 tr=0 ts=69a6e800 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=nmqUFfGTdH_2drHDQF0A:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzAzMDEwOCBTYWx0ZWRfX6bkAz4f4Mxwf 7/4Emo/uEJBNqN4a5/y1iDFjnaVlqW6JUnFQ0IjVhyJ/qW9OpGtZQW0ZUs4PQdA4Rn2DislZowR M43oSk3b0A7k8NF3+Lz0x8PH9288YYJ4pEZndjTXGmFTb8CkKs0aSpsLblDS1P1WytsRmgioD0o WyvnTjpGxgdptNOFolXCZXTcFaMMHHMZ5fBNtab8f6vTxqDzjNqGYu454PVZHXe4rRLJNtMtwWF jRmpsi/22TkozVpkWWMH8aJMbvMko2LtDk67Hcy5tf/UihNu7jpW3bJW/YR9wE/4FQygN/12qs7 4+FKLJ9rGLkU4oYdvdks5I+CNOAkXsD+Rsd1hdzk5/QbAsxY/6oFtNkQRfUTZ86WFGpdRw6Nwfi yHZRZyqP4Gm7+k99od9tIWr/Ex30CqontT5iuKKCPTLuCpNJDCW9WnEMtHFln1bQRwvd4pMWpxm jT2EIvrFo9hI+muJ5CA== X-Proofpoint-GUID: hu8jThj64-NmMvihnyO_7Zsnclwxtaso X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-02_05,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 adultscore=0 bulkscore=0 impostorscore=0 malwarescore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603030108 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 fdec90e85467..271cbb63af36 100644 --- a/tools/testing/selftests/kvm/Makefile.kvm +++ b/tools/testing/selftests/kvm/Makefile.kvm @@ -205,6 +205,7 @@ 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..7819a0af19a8 --- /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 -= 4; + 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 -= 4; + 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 */ +} -- 2.51.0