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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-30c7cab28fasm10605750eec.30.2026.06.25.11.30.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Jun 2026 11:30:46 -0700 (PDT) Date: Thu, 25 Jun 2026 11:30:44 -0700 From: Ashok Raj To: Rik van Riel Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, robin.murphy@arm.com, joro@8bytes.org, will@kernel.org, iommu@lists.linux.dev, jgg@ziepe.ca, kyle@mcmartin.ca, "ashok.raj@oss.qualcomm.com" Subject: Re: [PATCH 0/3] convert iova to maple tree Message-ID: References: <20260624030853.2340880-1-riel@surriel.com> 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-Disposition: inline In-Reply-To: <20260624030853.2340880-1-riel@surriel.com> X-Authority-Analysis: v=2.4 cv=cqerVV4i c=1 sm=1 tr=0 ts=6a3d73d8 cx=c_pps a=Uww141gWH0fZj/3QKPojxA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=_fJX-B647VwgLxwyQlsA:9 a=QEXdDO2ut3YA:10 a=PxkB5W3o20Ba91AHUih5:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI1MDE1OSBTYWx0ZWRfX1ZuYzskGDRMT cnvYv0i7iEOoWUxsLoxXILtMG8il1IFer8P53zPw7uj/jJ1nNZoy1UfCslWM7Dny2CdYrIRk+te u0akz+e7V+W2/y2wY5XZXmbXDkJ7JP+Pt7/5bzBI0GSdgJcBn7q+oohYd1qxsix1ZIxTFM7tTTI +gPSu4eoy4Dbnnk5Dmb5XiQyioa2P3r+b8XFl2MeLxKcVTHHjzPLntfQHL5JBnMBOUjG1DlI7o4 JT1ha0enQW2Okm7QQwaLFP8vLC6UyuByft57C7tBvCRzuA58MMe+jNNhQaPHoe5a9HgRgbW2mvC +5mCJDqEcNbqnqM0bOIcyrGwniWxspm78Ees3sK/EW1JQg7jRyGzpt4P/4pzoCLYvLZ+zL8MCx7 8co6wggLxv5/kvofVUh92bpdk6yNlx+izQ22DlBlW2rH9y88j3G1p7ltpZf5phgpuTYArrZmQgZ gcxb0UA6M8+9gWAcXrw== X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI1MDE1OSBTYWx0ZWRfXwNJ3dgKagH2B QfWHgrNJSrb9pwuce3OlzIyDUeGTXzBHNukpDbZuQ8zQiRgR2tkFdmWGZljqdVSOwg30EcOS6HF zPgA93/bHI+dgyJ4PzSRBbMx712OVog= X-Proofpoint-GUID: c9NO33eye3nMoYcUrIUOKEm74omCQEvz X-Proofpoint-ORIG-GUID: c9NO33eye3nMoYcUrIUOKEm74omCQEvz 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=2026-06-25_02,2026-06-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 phishscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 impostorscore=0 spamscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606250159 On Tue, Jun 23, 2026 at 11:07:33PM -0400, Rik van Riel wrote: > Based on 5d6919055dec Linux 7.1-rc3 > > v4: > - reduce the size of struct iova to 16 bytes > - simplify the (hopefully rare) remove_iova GFP_ATOMIC failure path > - test case for the deferred free code Somehow the v4 in the subject got dropped out. > v3: > - switch to maple tree (suggested by Robin Murphy) > v2: > - clean up selftests (thanks Jason Gunthorpe) > - address Sashiko concerns > - drop the search-with-alignment, since most iova requests > should be of similar sizes, so the worst case behavior > is unlikely to hit once ranges are excluded by the augmented > rbtree > > -- /ashok.raj ashok.raj@oss.qualcomm.com Qualcomm Inc