From nobody Mon Feb 9 23:42:57 2026 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CC1AD27587D; Tue, 11 Nov 2025 18:48:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.153.30 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762886935; cv=none; b=QDNYr9oePShlnNHZ8GEyGxVD4i7IW5iGpzA3QuyUMZSvZhilgIAK8nw5MJrE8D9yXVk5r4LHBep8oKzsftbQZ3mphl6bdTFUcSfCthFHS41GWn0Wks1yxwFOCdjelmD5aNRpU6/BCMWOHErViVW9AuPZYGTOUda+MgMPwduc7EU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762886935; c=relaxed/simple; bh=0XtmbB2SY36i1Pp1D5v4+9obrUNbM8EOQuG7J4fBRoo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=L476wqj4hdU+L0eGGWKmmpg8dqh43+YYZsjCeNUHvDQQ8WHRqSuZDmBYplisHBRQ2BMVploLhmBsFj2UqBZz+Vw2aOTBwVQGvi7V2crepu3elUW8nzvwHG5su9T6ntZX72zTQz7nOhb6YU42uI95/dziS1/0bT+qU4E8d/gtcYs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fb.com; spf=pass smtp.mailfrom=meta.com; dkim=pass (2048-bit key) header.d=fb.com header.i=@fb.com header.b=QBCrnVQE; arc=none smtp.client-ip=67.231.153.30 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fb.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=meta.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fb.com header.i=@fb.com header.b="QBCrnVQE" Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 5ABGKpnR2601076; Tue, 11 Nov 2025 10:48:48 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=s2048-2025-q2; bh=Utst7KVIWa/F56Scqc+4oMwpIO/MEqYbjt6MntaxnOM=; b=QBCrnVQEtYu7 yZ/7V2o5x9H61X1g2EhMF81jaPEjYjPY+IOsFosS3DAHPvZklpthpokB23HpSROp IagofIYnoEUu7FYYljjXAF4NvvTUHSmLqFrfy2enpK13+qCNudIAS6JQZFa05x2D KZsKQ71W4o98eOpSx90fcIqwqezDIrj/AwkAa9F6ZAJobufQ8ZZS7CRmEi6stDri jBzin7uI7JhHA5ax/bd7z9oF9oc7NV9MG791+GM/Q17tLhcHlUkfFD1EAodFGz8z qyRIIR3a7fZ1aNcg4GP9YoUl9P2QqHxyPFbqI08tBT8zj631Hvuo1uICEMtXw8mH Dtsw+JfR9w== Received: from maileast.thefacebook.com ([163.114.135.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 4ac8k51cdm-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Tue, 11 Nov 2025 10:48:48 -0800 (PST) Received: from devgpu015.cco6.facebook.com (2620:10d:c0a8:fe::f072) by mail.thefacebook.com (2620:10d:c0a9:6f::237c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.20; Tue, 11 Nov 2025 18:48:35 +0000 From: Alex Mastro Date: Tue, 11 Nov 2025 10:48:25 -0800 Subject: [PATCH v3 2/4] vfio: selftests: fix map limit tests to use last available iova Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20251111-iova-ranges-v3-2-7960244642c5@fb.com> References: <20251111-iova-ranges-v3-0-7960244642c5@fb.com> In-Reply-To: <20251111-iova-ranges-v3-0-7960244642c5@fb.com> To: Alex Williamson , David Matlack , Shuah Khan , Jason Gunthorpe CC: , , , Alex Mastro X-Mailer: b4 0.13.0 X-Proofpoint-ORIG-GUID: U95uMc45q4D_icKTbdh7aqIt5GWq24e6 X-Authority-Analysis: v=2.4 cv=X95f6WTe c=1 sm=1 tr=0 ts=69138510 cx=c_pps a=MfjaFnPeirRr97d5FC5oHw==:117 a=MfjaFnPeirRr97d5FC5oHw==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=1XWaLZrsAAAA:8 a=FOH2dFAWAAAA:8 a=6z5LghiaB1OvJCA-hK8A:9 a=QEXdDO2ut3YA:10 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTExMDE1MiBTYWx0ZWRfX4GS92S66yklG q+5TxHPbxse1w/ISBp81OSII5fVqjreYThq7OZmSvh3dPp/mxnzF/76ujDylkl6uykgvHNQYd+y y7XNScq4/l+onPSiLwjrvpHnF4Jb9eH2N6/qHDWq6dxBvKB2mbNxwqOzLbaZzexqyEwSicYWPuK M5IWgIomzsBLvGP+ognSp3bXvcbt+SSkiMUIPDQ3eBD3Xx6DOMSX0F5IUsdb1/CeGv1lu9BQR17 Tn3U+NPH6SU2u6zegIQkdoqxjJNYxvVPlVU5pCgOhhj+xnEbUsE9Xx+4hc9DNAuMLpj/WHVoHtF uwhCpn5t5LV1FUVZRr/deYQHlCQCJ2AUD0UBTVSKYcyQn81oIlAoiwLlJ0VwdW6quzl85RdVHAW eBpFiglx1Nroe+w5TJA1XuTdEUJ7ig== X-Proofpoint-GUID: U95uMc45q4D_icKTbdh7aqIt5GWq24e6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-11_03,2025-11-11_03,2025-10-01_01 Use the newly available vfio_pci_iova_ranges() to determine the last legal IOVA, and use this as the basis for vfio_dma_map_limit_test tests. Fixes: de8d1f2fd5a5 ("vfio: selftests: add end of address space DMA map/unm= ap tests") Reviewed-by: David Matlack Tested-by: David Matlack Signed-off-by: Alex Mastro --- tools/testing/selftests/vfio/vfio_dma_mapping_test.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/vfio/vfio_dma_mapping_test.c b/tools/t= esting/selftests/vfio/vfio_dma_mapping_test.c index 4f1ea79a200c..e1374aab96bd 100644 --- a/tools/testing/selftests/vfio/vfio_dma_mapping_test.c +++ b/tools/testing/selftests/vfio/vfio_dma_mapping_test.c @@ -3,6 +3,8 @@ #include #include =20 +#include +#include #include #include #include @@ -219,7 +221,10 @@ FIXTURE_VARIANT_ADD_ALL_IOMMU_MODES(); FIXTURE_SETUP(vfio_dma_map_limit_test) { struct vfio_dma_region *region =3D &self->region; + struct iommu_iova_range *ranges; u64 region_size =3D getpagesize(); + iova_t last_iova; + u32 nranges; =20 /* * Over-allocate mmap by double the size to provide enough backing vaddr @@ -232,8 +237,13 @@ FIXTURE_SETUP(vfio_dma_map_limit_test) MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); ASSERT_NE(region->vaddr, MAP_FAILED); =20 - /* One page prior to the end of address space */ - region->iova =3D ~(iova_t)0 & ~(region_size - 1); + ranges =3D vfio_pci_iova_ranges(self->device, &nranges); + VFIO_ASSERT_NOT_NULL(ranges); + last_iova =3D ranges[nranges - 1].last; + free(ranges); + + /* One page prior to the last iova */ + region->iova =3D last_iova & ~(region_size - 1); region->size =3D region_size; } =20 @@ -276,6 +286,7 @@ TEST_F(vfio_dma_map_limit_test, overflow) struct vfio_dma_region *region =3D &self->region; int rc; =20 + region->iova =3D ~(iova_t)0 & ~(region->size - 1); region->size =3D self->mmap_size; =20 rc =3D __vfio_pci_dma_map(self->device, region); --=20 2.47.3