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AJvYcCWUxyVdI1BluP6lKmgwyHMYrDy4nR6WmVUAh9MtieK64hvYlwfpsxdadhiTJNynYgZq8XQ6KQ==@lists.linux.dev X-Gm-Message-State: AOJu0Yx6AQwrO5DeJd2Fap6ZTALfDCe1BJufU1BihEJDLTM/a/d9G592 20C0uMPWpARhv8/+YncPLlRM+Y3IQEczuDBSJW1fptI4FTDMTaMhfffC5+tWrHw= 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 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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 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