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AJvYcCWunPk+DaNGL9wfgox71ZroRgrihQV2P5KxEZjNePPV1h49/cCiR7zcJbI3AFhyna4I1xrVuCmbmQ==@kvack.org X-Gm-Message-State: AOJu0YzDnsZ7Kf19pFYlDF44stKteZfHDmq5mioGZcoTAfABe73ik8QF MsvKXMIBAdlFclY3RAgW2mdv4PT+lWxHTKv394bwT4/Kt1fBgO4J+tuMAO2WRy8= X-Google-Smtp-Source: AGHT+IGsg2gMuDdd8QNd8tlE79QeVlOXl87E5sZsK92hB7UM4f0gqnlbEouiOfBHyppk70cC1W17JQ== X-Received: by 2002:a05:6a21:4d8b:b0:1d9:b78:2dd3 with SMTP id adf61e73a8af0-1d9a840aaf4mr23384613637.26.1730339055795; Wed, 30 Oct 2024 18:44:15 -0700 (PDT) Received: from [192.168.1.150] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e93daac966sm332679a91.17.2024.10.30.18.44.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Oct 2024 18:44:15 -0700 (PDT) Message-ID: <3144b6e7-5c80-46d2-8ddc-a71af3c23072@kernel.dk> Date: Wed, 30 Oct 2024 19:44:13 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 00/17] Provide a new two step DMA mapping API To: Leon Romanovsky , Jason Gunthorpe , Robin Murphy , Joerg Roedel , Will Deacon , Christoph Hellwig , Sagi Grimberg Cc: Keith Busch , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Marek Szyprowski , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Andrew Morton , Jonathan Corbet , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org References: Content-Language: en-US From: Jens Axboe In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 74624100002 X-Stat-Signature: j7aiuehpmozx4ekhoxyarjrsq6ixosaz X-HE-Tag: 1730339007-75425 X-HE-Meta: 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 3RXD/AoI 8S7eagtOzRsTec8/D31hyHEdXW0cdCa2VWSbvHpXi/OtkMJONIFAdWwKCsThLDOXF6JnF8N0OImiuiOtnE/do4fgS1FNbNbVZJPPgQptpRstZj04Au559nr3eDSBfkFVBSPyN+ZuMlK+6Q7bhgK4868Eael8nGw6SsugS8AD00oxSFz3mvrA9OOeXj14xR8jeSlN6fb0GQA3CeDhI+P8inAm10PjgKHDPPIwjvrGP22iZOOqo9NjH99moQFAvehvtxp59pR3Xn1RFLCNkZsLcRtQ71A+TaUtqbX0rIUneDP7ZqTssjT9D8dAT88qtMD3NL6L9Pa4+M9DS17aU/GgodfnqRTEhsrnWf4tpDCKandsQvfAI8vSfMqscL+CV52wdjSC3 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10/30/24 9:12 AM, Leon Romanovsky wrote: > Changelog: > v1: > * Squashed two VFIO patches into one > * Added Acked-by/Reviewed-by tags > * Fix docs spelling errors > * Simplified dma_iova_sync() API > * Added extra check in dma_iova_destroy() if mapped size to make code more clear > * Fixed checkpatch warnings in p2p patch > * Changed implementation of VFIO mlx5 mlx5vf_add_migration_pages() to > be more general > * Reduced the number of changes in VFIO patch > v0: https://lore.kernel.org/all/cover.1730037276.git.leon@kernel.org > > ---------------------------------------------------------------------------- > The code can be downloaded from: > https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git tag:dma-split-oct-30 On Christoph's request, I tested this series last week and saw some pretty significant performance regressions on my box. I don't know what the status is in terms of that, just want to make sure something like this doesn't get merged until that is both fully understood and sorted out. -- Jens Axboe