From nobody Mon Feb 9 23:15:53 2026 Received: from mx0a-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 1520D2F5A02; Mon, 10 Nov 2025 21:11:33 +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=1762809095; cv=none; b=BNsvrNgQN1axG+AYZvebVVsz/nvAxTSvlzHQ/g5r75pVElYoB8Wdttx+p70ge38T5to42mTIsbh2NRDa7PbrDn4FARIbuj2eSs5wQu+rNkU+jwyi3oD2qiDyQXljg5Ha9BGi8uIT+TcHovH3IlBQ+jODmUHUVHOPu21G8OBTNzE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762809095; c=relaxed/simple; bh=NaPTNEHpV6A0u993PlaIXhUmsY18jZ4WOH4BpYu3Zp4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=MHINKHBAEnY4VjptV7Kg7RpdADWsmu9Z1IiKBzXpdlq+YHONzsAtDoRJdQ6vSJTEB0He2E/6rwYeux01sBSX7MUUQP/5WqEM1IQlmQkq2Sin10+edFnQanUGJMxFnyPDLf86Vlu98q0lPmmu2peNLrW6lkgBESwIUY1VfxT/NA0= 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=BW5fBngo; 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="BW5fBngo" Received: from pps.filterd (m0089730.ppops.net [127.0.0.1]) by m0089730.ppops.net (8.18.1.11/8.18.1.11) with ESMTP id 5AAL4UPf3887404; Mon, 10 Nov 2025 13:11:27 -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=kXIomevZxcHatDoppWvHoctejlEdcrJSBgRRuUN+8rA=; b=BW5fBngo0q9t j4EryAe+KtqLn5BfwMKimUn/Khy9Kg+taT3JOq0pvVXzFLG59IIq9ow5ctCCa2u8 eVDznCuKbtRJD5pAd8vSWz9zqornQishkmLFgZYHvVbzY2KfSR8TdjqQGVqla0jK gB7BbHnGsaQyqljtumI6UGpIVsFZI+i+mdB7gdPttV1UZJS4GVG9ihVWLKJJ31Xe TKarByoUza+FShcjrp/MzXqwopknHhEYYCGOB61i6hAhaPwT4xeCwJZvhRUyfg6J enJMnplrh7soCxI5JgjdcVZDP2+PRxU7YUme8Gif2jfQh3Akc6ubRo1z3hj0VC2/ INPsVbWhxg== Received: from mail.thefacebook.com ([163.114.134.16]) by m0089730.ppops.net (PPS) with ESMTPS id 4abqn6r1sm-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Mon, 10 Nov 2025 13:11:27 -0800 (PST) Received: from devgpu015.cco6.facebook.com (2620:10d:c085:108::4) by mail.thefacebook.com (2620:10d:c08b:78::c78f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.20; Mon, 10 Nov 2025 21:11:25 +0000 From: Alex Mastro Date: Mon, 10 Nov 2025 13:10:42 -0800 Subject: [PATCH 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: <20251110-iova-ranges-v1-2-4d441cf5bf6d@fb.com> References: <20251110-iova-ranges-v1-0-4d441cf5bf6d@fb.com> In-Reply-To: <20251110-iova-ranges-v1-0-4d441cf5bf6d@fb.com> To: Alex Williamson , David Matlack , Shuah Khan CC: , , , Alex Mastro , Jason Gunthorpe X-Mailer: b4 0.13.0 X-Proofpoint-GUID: 38qHkLTYQuudBznWeH22BTDbfBxzTEsr X-Proofpoint-ORIG-GUID: 38qHkLTYQuudBznWeH22BTDbfBxzTEsr X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTEwMDE3OSBTYWx0ZWRfXxBsPC1t0w+G8 OymGgB+QoaIOCDK0Mp134dqYtMhKoDpEllgK9jWLG7f7dJRtlXhz5GL9RJCuTBXHUag/iaqqSgf X+UASP64SLncGpwYc8VkUpbnTjB8GM7Z+W/5ESt8pKxzKdfrhZJhNec2Yd7Aq4+7sz49xEj6VOS 1wGlnVcniI1UxTuLu/kIglSV/LWyu+i0Al8vFmST1FY23F3DIbP60yKw1Ty+c2sGAq08A8TMkw1 0YRYEI1IRsRwh0GAtGZ6oi/l29Y9f66IRolycldHT5ghYLCBpds1MvUOO42uRq+q1tqinhRPYTM P9+8GoiCdBCSehuS1SbkU76VqjgRKOD4UOoaGjK+axWUMoYPExwbVwHXH2tDA8xl9YbNzOi5Uyg 2d5CHpO8/DB6CX9C48MlL50/fodWvA== X-Authority-Analysis: v=2.4 cv=Qdprf8bv c=1 sm=1 tr=0 ts=691254ff cx=c_pps a=CB4LiSf2rd0gKozIdrpkBw==:117 a=CB4LiSf2rd0gKozIdrpkBw==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=FOH2dFAWAAAA:8 a=2r72hCCS2uxvEu3KRW0A:9 a=QEXdDO2ut3YA:10 a=cPQSjfK2_nFv0Q5t_7PE:22 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=2025-11-10_07,2025-11-10_02,2025-10-01_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") Signed-off-by: Alex Mastro --- tools/testing/selftests/vfio/vfio_dma_mapping_test.c | 17 +++++++++++++++-- 1 file changed, 15 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..37c2a342df8d 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; + size_t 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 +286,9 @@ TEST_F(vfio_dma_map_limit_test, overflow) struct vfio_dma_region *region =3D &self->region; int rc; =20 + if (region->iova !=3D (~(iova_t)0 & ~(region->size - 1))) + SKIP(return, "IOMMU address space insufficient for overflow test"); + region->size =3D self->mmap_size; =20 rc =3D __vfio_pci_dma_map(self->device, region); --=20 2.47.3