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Thu, 04 Jun 2026 09:29:44 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (smtpav06.dal12v.mail.ibm.com [10.241.53.105]) by smtprelay07.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6549TgOs26149624 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 4 Jun 2026 09:29:42 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6258658059; Thu, 4 Jun 2026 09:29:42 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AFCE258043; Thu, 4 Jun 2026 09:29:38 +0000 (GMT) Received: from vaibhav?linux.ibm.com (unknown [9.124.208.31]) by smtpav06.dal12v.mail.ibm.com (Postfix) with SMTP; Thu, 4 Jun 2026 09:29:38 +0000 (GMT) Received: by vaibhav@linux.ibm.com (sSMTP sendmail emulation); Thu, 04 Jun 2026 14:59:36 +0530 From: Vaibhav Jain To: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org Cc: Vaibhav Jain , Madhavan Srinivasan , Michael Ellerman , Eric Biggers Subject: [PATCH] kvm powerpc/book3s-apiv2: Add suite initialization to skip GSB tests without APIv2 support Date: Thu, 4 Jun 2026 14:59:30 +0530 Message-ID: <20260604092931.344101-1-vaibhav@linux.ibm.com> X-Mailer: git-send-email 2.54.0 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: _uxoiUFcdeGLRCUHW02EHEZ614gqhGqZ X-Proofpoint-GUID: _uxoiUFcdeGLRCUHW02EHEZ614gqhGqZ X-Authority-Analysis: v=2.4 cv=bcVbluPB c=1 sm=1 tr=0 ts=6a214589 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=SRakg5jYXA31ZsQ6RxEA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjA0MDA4NyBTYWx0ZWRfXz9x7Ll32E6/A f7VmUO4XAq6vRwQJQzjI5+IE03xXJFI6k7WDJzyY44t9nRUjTbSnZ1sov/5G1FeI42Z8lfGQ0DB ipkabMAdYA0GfuH5zxwJbx2zDNcZQd2nUpfJ/PSdfKw9dOf2wt1YS9p/gJJGVzs0pOFBxHFTjo4 qX1v3gTPEaGxFvZIzsQZQhU08SrzPJ7B1SJZDo88XEI7fLZwvv8esSNCcBBymgnVZEiB/FxEAT6 fNI5PC+r4LhGpJd0x/qo6grFwxh5ocZdkfwfwbbKSTdfIN48Nwdt8Ba/EAdTKXcfkLeSaUHkl9c 3rdGfP6gdmyCaOT/9N8Qk7iMNIyHWh6C60aQEFxJbq00zz7OX1gRkOWlH6YcCMZbMqKG/V7+tMH FiUOlGK98AaW9PhaAOLSeKRV2RmkOkab+LRJzegBClC1XUFW/DmQ4/aIcUiCYa/1ejBfX/Tm0mG VM8SbG+hL4zpoWMrnEA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-04_03,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 adultscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606040087 The guest state buffer (GSB) test suite currently fails on systems that do not support the PAPR APIv2 nested virtualization. This happens because the tests attempt to use APIv2-specific functionality without first checking if the host supports it. This was recently reported [1] when test-guest-state-buffer kunit tests were being run on Qemu without enabling Qemu capability 'cap-nested-papr' which enabled APIv2 nested virtualization for PPC64 Pseries Qemu machine. Add a suite_init callback that checks for APIv2 support by calling plpar_guest_get_capabilities(). If the host does not support APIv2 (indicated by H_SUCCESS not being returned), mark all test cases in the suite as KUNIT_SKIPPED. This prevents test failures on systems without APIv2 support while still allowing the tests to run on capable systems. [1] https://lore.kernel.org/all/20260603064225.GC18149@sol/ Reported-by: Eric Biggers Closes: https://lore.kernel.org/all/20260603064225.GC18149@sol Signed-off-by: Vaibhav Jain Assisted-by: Bob:Claude-3.7-Sonnet Bob-Shell --- arch/powerpc/kvm/test-guest-state-buffer.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/powerpc/kvm/test-guest-state-buffer.c b/arch/powerpc/kvm/test-guest-state-buffer.c index 5ccca306997a..f84b40fa55db 100644 --- a/arch/powerpc/kvm/test-guest-state-buffer.c +++ b/arch/powerpc/kvm/test-guest-state-buffer.c @@ -521,6 +521,24 @@ static void test_gs_hostwide_counters(struct kunit *test) kvmppc_gsb_free(gsb); } +static int init_gs_test_suite(struct kunit_suite *suite) +{ + long rc; + unsigned long host_capabilities; + struct kunit_case *test_case; + + /* Enable test suite only if APIv2 is supported */ + rc = plpar_guest_get_capabilities(0, &host_capabilities); + + if (rc != H_SUCCESS) { + /* Skip all testcases if no APIv2 support */ + kunit_suite_for_each_test_case(suite, test_case) + WRITE_ONCE(test_case->status, KUNIT_SKIPPED); + } + + return 0; +} + static struct kunit_case guest_state_buffer_testcases[] = { KUNIT_CASE(test_creating_buffer), KUNIT_CASE(test_adding_element), @@ -535,6 +553,7 @@ static struct kunit_case guest_state_buffer_testcases[] = { static struct kunit_suite guest_state_buffer_test_suite = { .name = "guest_state_buffer_test", .test_cases = guest_state_buffer_testcases, + .suite_init = init_gs_test_suite, }; kunit_test_suites(&guest_state_buffer_test_suite); -- 2.54.0