From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 38D21D1356E for ; Sun, 27 Oct 2024 15:30:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=AIaNNcm3XUGBo9OgO3ovSINrRXEDBCyPOnC0y7/NQWs=; b=cJ1ON0wNMNlIRcVTcL5+qHRO7s eVheixFXwXYjh3mrxsDfo+qG47CksVOoJGBMWbb3vu2TscIz+TbQ82LM47bDMatsG9IbaDnrE8G1L ES+YkSoxYSGtdkqITZntEx+OD+HvkqvDiu8L+eKT7PckvNP3qvWYtWlYS9EFUl7oRmnbhxT/HE7VJ UxznjpYhqr1876uPYN6VmIDt3vq9B/PqeiQBBxIJr0b4MeciIbqwnjDC0wforg0VRjWHfKrxeF6Ul jAg/+AWGnOLcKSqgid2e4SQqvo9YCFnRamLRGL0vqbc2HMLlg+kI9IdTdfVi7zmQWUYW+4kPc3smU bRYNJo7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t55Dc-00000008TR1-2Baf; Sun, 27 Oct 2024 15:30:16 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t54AI-00000008Kin-25Qe for linux-nvme@bombadil.infradead.org; Sun, 27 Oct 2024 14:22:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=AIaNNcm3XUGBo9OgO3ovSINrRXEDBCyPOnC0y7/NQWs=; b=U7iOldFz2k5d5Snx21IuGLufQ4 xlxkhwSqx154z5gBcIxKxedGJb2li8YGAbF/8lO/NBbWwVHtUMZkR/MDpV9Njpp6s7Rw/iuRPPjN1 yq3Of6zPJMOizqy+faP4nGhuRy+uuwUr0GlFfGGYmUbR6haVH88m7x3uFi8QUE9nGcPtR9+0FeA7v ZjXWxxsd97X0p7FgZ3URT6a0zjzNdx1FnPK3pQAB+ElvWpJmlDmyNKcKRx8u7SPG+uYT9Kq2KkajR RH6eXqBtWOz/Y8uNI56dI7Up9utN+/+6qiuTsb+Opo+N/HYTT15UFQBh6nBWEFqg67SJEenjy5lzy ZqmsaZtQ==; Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by desiato.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t54AA-00000009QOG-3Ovb for linux-nvme@lists.infradead.org; Sun, 27 Oct 2024 14:22:44 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id ECDFDA40FA9; Sun, 27 Oct 2024 14:20:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0785CC4CEE5; Sun, 27 Oct 2024 14:22:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730038956; bh=0oAZb2A1AcGBYwYJqLqYoF06Rd3XR3a/YcihuL4Yd4c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XnYNHf81XRJqGaj3hsxMDwA7dy6KsvsmA+yLe06qPkXYN2xa++1K94IKvJFVhF3WJ T4nkxQIbD+/taXB1cTkhu7YVDVMs52CwQsF6Amd9bdNSuoW6OOoIjgXvVDwmEvZguv 8WlPW9lCV2ndSXcOd/O3Yle9aIqIcn5rb/jdxIv+xfewF90Snln3D0sQEOog6AYL9f sGWvMWAh24LWTaEyPcu71Fg+Q1qBrTCefvjH+3Eda+IVvo3/EjNd7zcWwc1s35Yx2V 0GfmH2Gg2xDEgchvQ6+NhsCw8PELJVVU3eaVeCo4YhOOnUEW7QANXpX8NQDUgVH6hg Njugb3kh4Lfgg== From: Leon Romanovsky To: Jens Axboe , Jason Gunthorpe , Robin Murphy , Joerg Roedel , Will Deacon , Christoph Hellwig , Sagi Grimberg Cc: Leon Romanovsky , Keith Busch , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Marek Szyprowski , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , 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 Subject: [PATCH 17/18] vfio/mlx5: Explicitly store page list Date: Sun, 27 Oct 2024 16:21:17 +0200 Message-ID: <4c0a2f96d672d395caec3fe7dd6049a48b2582c6.1730037276.git.leon@kernel.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241027_142239_583972_2D028BCC X-CRM114-Status: GOOD ( 15.22 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Leon Romanovsky As a preparation to removal scatter-gather table and unifying receive and send list, explicitly store page list. Signed-off-by: Leon Romanovsky --- drivers/vfio/pci/mlx5/cmd.c | 29 ++++++++++++----------------- drivers/vfio/pci/mlx5/cmd.h | 1 + 2 files changed, 13 insertions(+), 17 deletions(-) diff --git a/drivers/vfio/pci/mlx5/cmd.c b/drivers/vfio/pci/mlx5/cmd.c index 1832a6c1f35d..34ae3e299a9e 100644 --- a/drivers/vfio/pci/mlx5/cmd.c +++ b/drivers/vfio/pci/mlx5/cmd.c @@ -422,6 +422,7 @@ void mlx5vf_free_data_buffer(struct mlx5_vhca_data_buffer *buf) for_each_sgtable_page(&buf->table.sgt, &sg_iter, 0) __free_page(sg_page_iter_page(&sg_iter)); sg_free_append_table(&buf->table); + kvfree(buf->page_list); kfree(buf); } @@ -434,39 +435,33 @@ static int mlx5vf_add_migration_pages(struct mlx5_vhca_data_buffer *buf, unsigned int to_fill; int ret; - to_fill = min_t(unsigned int, npages, PAGE_SIZE / sizeof(*page_list)); - page_list = kvzalloc(to_fill * sizeof(*page_list), GFP_KERNEL_ACCOUNT); + to_fill = min_t(unsigned int, npages, PAGE_SIZE / sizeof(*buf->page_list)); + page_list = kvzalloc(to_fill * sizeof(*buf->page_list), GFP_KERNEL_ACCOUNT); if (!page_list) return -ENOMEM; + buf->page_list = page_list; + do { filled = alloc_pages_bulk_array(GFP_KERNEL_ACCOUNT, to_fill, - page_list); - if (!filled) { - ret = -ENOMEM; - goto err; - } + buf->page_list + buf->npages); + if (!filled) + return -ENOMEM; + to_alloc -= filled; ret = sg_alloc_append_table_from_pages( - &buf->table, page_list, filled, 0, + &buf->table, buf->page_list + buf->npages, filled, 0, filled << PAGE_SHIFT, UINT_MAX, SG_MAX_SINGLE_ALLOC, GFP_KERNEL_ACCOUNT); if (ret) - goto err; + return ret; buf->npages += filled; - /* clean input for another bulk allocation */ - memset(page_list, 0, filled * sizeof(*page_list)); to_fill = min_t(unsigned int, to_alloc, - PAGE_SIZE / sizeof(*page_list)); + PAGE_SIZE / sizeof(*buf->page_list)); } while (to_alloc > 0); - kvfree(page_list); return 0; - -err: - kvfree(page_list); - return ret; } struct mlx5_vhca_data_buffer * diff --git a/drivers/vfio/pci/mlx5/cmd.h b/drivers/vfio/pci/mlx5/cmd.h index 25dd6ff54591..5b764199db53 100644 --- a/drivers/vfio/pci/mlx5/cmd.h +++ b/drivers/vfio/pci/mlx5/cmd.h @@ -53,6 +53,7 @@ struct mlx5_vf_migration_header { }; struct mlx5_vhca_data_buffer { + struct page **page_list; struct sg_append_table table; loff_t start_pos; u64 length; -- 2.46.2