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 E0363C54E41 for ; Tue, 5 Mar 2024 13:37:14 +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=CTugSmgLwJgDA9ipI5mnVckl7fOXK4aUNX016/UL5M0=; b=D90UDLFcEsq2i3fCmvmQiunmp+ 4XgRogmyuMawAuN4jCD5Hz016wbByFi52o69SBsR9mX3ttqIF3EUX0C5dsqMaP+Xb1WtTT8ZQCVdW cdHQXmwhHI0cdQhMuWOQbQqqqM7tprU5aIM/qlV/Q3/W76OvvjUP7C6I0IdEBsFS8hOvn+fscxzFC XUVktX1csMxXtjsS0l+2+sxg51BUY2Jrc/Rxx/Icmsx6+wNXFFufR3JTfKiWkWOWUlXCotxkJjS18 ZPTCkoAlVEirJCo2ePItWsVWH1AF/oTFAWItnGD3GPZHhFEG91z8bFphDoM5NV9j2b9MpD+pwz5mT 9ZXCcZoQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhUyn-0000000DonA-2wDG; Tue, 05 Mar 2024 13:37:13 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhRx9-0000000D1GY-1mNm for linux-nvme@lists.infradead.org; Tue, 05 Mar 2024 10:23:21 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id E75D2614D1; Tue, 5 Mar 2024 10:23:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEE7CC433C7; Tue, 5 Mar 2024 10:23:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709634198; bh=WBfM8ZvY1JfgPv87VMT5XwFqFK1pOKYXqtZNVa4/Kmg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aYKYGXWnIXA5YF13RHhycYrXp349VOhkh6hHz38egCBlNQBYUMc9jC9/LkoCVC8hp PWkSAkCjha8oqzedg/56Xb71wcwnwj98750I0IBvwSe0anKQ3pqY5nST45OfMEas3f y9H2ibe3MuxaZ9f7gAxnwd6Zpt81O9csC32FSAvd+pjGiJ7w607nymwIAs8SL8AAla IDohF8dNr6SFfnT7r8V517eGKLFQ3Tv1GcwD0u6j7rkI1F7DiUUJCK6G0vEyKi48Pz ibWqAPhwDN33hzZkamTUbwtP31m0LjLVl9AITxnxmMqPgGg5DW3MPm+8dev9xkA9G9 CDszlhHpjpm2Q== From: Leon Romanovsky To: Christoph Hellwig , Robin Murphy , Marek Szyprowski , Joerg Roedel , Will Deacon , Jason Gunthorpe , Chaitanya Kulkarni Cc: Leon Romanovsky , Jonathan Corbet , Jens Axboe , Keith Busch , Sagi Grimberg , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Andrew Morton , 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, kvm@vger.kernel.org, linux-mm@kvack.org, Bart Van Assche , Damien Le Moal , Amir Goldstein , "josef@toxicpanda.com" , "Martin K. Petersen" , "daniel@iogearbox.net" , Dan Williams , "jack@suse.com" , Zhu Yanjun Subject: [RFC 13/16] vfio/mlx5: Explicitly store page list Date: Tue, 5 Mar 2024 12:22:14 +0200 Message-ID: <1d0ca7408af6e5f0bb09baffd021bc72287e5ed8.1709631413.git.leon@kernel.org> X-Mailer: git-send-email 2.44.0 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-20240305_022319_562125_9BB7B6A0 X-CRM114-Status: GOOD ( 16.11 ) X-Mailman-Approved-At: Tue, 05 Mar 2024 05:32:59 -0800 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 | 1 + drivers/vfio/pci/mlx5/cmd.h | 1 + drivers/vfio/pci/mlx5/main.c | 35 +++++++++++++++++------------------ 3 files changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/vfio/pci/mlx5/cmd.c b/drivers/vfio/pci/mlx5/cmd.c index 44762980fcb9..5e2103042d9b 100644 --- a/drivers/vfio/pci/mlx5/cmd.c +++ b/drivers/vfio/pci/mlx5/cmd.c @@ -411,6 +411,7 @@ 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); } diff --git a/drivers/vfio/pci/mlx5/cmd.h b/drivers/vfio/pci/mlx5/cmd.h index 83728c0669e7..815fcb54494d 100644 --- a/drivers/vfio/pci/mlx5/cmd.h +++ b/drivers/vfio/pci/mlx5/cmd.h @@ -57,6 +57,7 @@ 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; diff --git a/drivers/vfio/pci/mlx5/main.c b/drivers/vfio/pci/mlx5/main.c index b11b1c27d284..7ffe24693a55 100644 --- a/drivers/vfio/pci/mlx5/main.c +++ b/drivers/vfio/pci/mlx5/main.c @@ -69,44 +69,43 @@ int mlx5vf_add_migration_pages(struct mlx5_vhca_data_buffer *buf, unsigned int npages) { unsigned int to_alloc = npages; + size_t old_size, new_size; struct page **page_list; unsigned long filled; 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)); + old_size = buf->npages * sizeof(*buf->page_list); + new_size = old_size + to_fill * sizeof(*buf->page_list); + page_list = kvrealloc(buf->page_list, old_size, new_size, + GFP_KERNEL_ACCOUNT | __GFP_ZERO); 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; } static void mlx5vf_disable_fd(struct mlx5_vf_migration_file *migf) -- 2.44.0 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 EE60EC54E41 for ; Tue, 5 Mar 2024 14:36:17 +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=CTugSmgLwJgDA9ipI5mnVckl7fOXK4aUNX016/UL5M0=; b=2Fz0BmjOmz1GOvVg3CxAFtpYBg z4oxJl0Vy0lTX7aTzpQ+DTQJFQgBN2PPtOUAGTN+DkjIvCRswcAFtnIlPzUz/8p8UmnHk9PXsr6IV rXgbbE2ibOYSzPaAeYXkzR4WyZQZuy6W634Uie+9iL/qKIqXWF2AnLmxhcTnKSWB7LVbG/HdRfiWE pmIVLI2vSMsfpkI6NWr7B/UmTFayr1A74lXZqTldZZ983YOxPh+0KQbOYBlyMnUDZ0Mx9FXHTYIgZ g6I+UWgVIwg1hdJP2ihbjhzDxP3nyD5dopa425Y5994j+8a3KLZOMX58F4SfQWckiGVH800RVV8oc kIzvgXsA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhVtw-0000000E34Z-3bEJ; Tue, 05 Mar 2024 14:36:16 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhRqY-0000000Cxwx-3uGg for linux-nvme@lists.infradead.org; Tue, 05 Mar 2024 10:16:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id CF249CE19BE; Tue, 5 Mar 2024 10:16:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18436C433F1; Tue, 5 Mar 2024 10:16:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709633787; bh=WBfM8ZvY1JfgPv87VMT5XwFqFK1pOKYXqtZNVa4/Kmg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IkRk/fb09cNpaq1ao/YIjVQRUd7549ASV5vUrE0loQ3I40W0g4lHqMa2RnlPOC+SL 7O47LLrDs24FE154PCpzD9gxTzqQT73wARI+zqa5pCclRYy+mfUAb3VXN5E67rLGEq 3FJ29W4o1dvJg1oBPDj9nWxWk+GDyXcjXC0TwrN0jPCHmoAcRi2VmERQ0yOXxC4y76 SQTUfIFSI98tR0AmIVTshw3fDy/384A966eKFUmESBoo+LVwjOUtuC+rAvhyqDK1EM ycf5A5dNTFKwMwlUDywAbqNnUHwzdQvu0BxoWJduZUbSgbO83ABzuBc7P68A9/gK4g OYyahJ7w7P7Rw== From: Leon Romanovsky To: Christoph Hellwig , Robin Murphy , Marek Szyprowski , Joerg Roedel , Will Deacon , Jason Gunthorpe , Chaitanya Kulkarni Cc: Leon Romanovsky , Jonathan Corbet , Jens Axboe , Keith Busch , Sagi Grimberg , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Andrew Morton , 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, kvm@vger.kernel.org, linux-mm@kvack.org, Bart Van Assche , Damien Le Moal , Amir Goldstein , "josef@toxicpanda.com" , "Martin K. Petersen" , "daniel@iogearbox.net" , Dan Williams , "jack@suse.com" , Zhu Yanjun Subject: [RFC 13/16] vfio/mlx5: Explicitly store page list Date: Tue, 5 Mar 2024 12:15:23 +0200 Message-ID: <1d0ca7408af6e5f0bb09baffd021bc72287e5ed8.1709631413.git.leon@kernel.org> X-Mailer: git-send-email 2.44.0 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-20240305_021631_366082_EF885103 X-CRM114-Status: GOOD ( 16.11 ) X-Mailman-Approved-At: Tue, 05 Mar 2024 05:32:59 -0800 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 Message-ID: <20240305101523.-Ohrlqpo8IMcZEZWdgsaHuJDxCtTVQf6cle7lPmY5fc@z> 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 | 1 + drivers/vfio/pci/mlx5/cmd.h | 1 + drivers/vfio/pci/mlx5/main.c | 35 +++++++++++++++++------------------ 3 files changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/vfio/pci/mlx5/cmd.c b/drivers/vfio/pci/mlx5/cmd.c index 44762980fcb9..5e2103042d9b 100644 --- a/drivers/vfio/pci/mlx5/cmd.c +++ b/drivers/vfio/pci/mlx5/cmd.c @@ -411,6 +411,7 @@ 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); } diff --git a/drivers/vfio/pci/mlx5/cmd.h b/drivers/vfio/pci/mlx5/cmd.h index 83728c0669e7..815fcb54494d 100644 --- a/drivers/vfio/pci/mlx5/cmd.h +++ b/drivers/vfio/pci/mlx5/cmd.h @@ -57,6 +57,7 @@ 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; diff --git a/drivers/vfio/pci/mlx5/main.c b/drivers/vfio/pci/mlx5/main.c index b11b1c27d284..7ffe24693a55 100644 --- a/drivers/vfio/pci/mlx5/main.c +++ b/drivers/vfio/pci/mlx5/main.c @@ -69,44 +69,43 @@ int mlx5vf_add_migration_pages(struct mlx5_vhca_data_buffer *buf, unsigned int npages) { unsigned int to_alloc = npages; + size_t old_size, new_size; struct page **page_list; unsigned long filled; 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)); + old_size = buf->npages * sizeof(*buf->page_list); + new_size = old_size + to_fill * sizeof(*buf->page_list); + page_list = kvrealloc(buf->page_list, old_size, new_size, + GFP_KERNEL_ACCOUNT | __GFP_ZERO); 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; } static void mlx5vf_disable_fd(struct mlx5_vf_migration_file *migf) -- 2.44.0