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 X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9547AC2D0A3 for ; Fri, 6 Nov 2020 18:20:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 367702223F for ; Fri, 6 Nov 2020 18:20:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="vUzrjATA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727912AbgKFSUN (ORCPT ); Fri, 6 Nov 2020 13:20:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726880AbgKFSUM (ORCPT ); Fri, 6 Nov 2020 13:20:12 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8639CC0613CF; Fri, 6 Nov 2020 10:20:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=8HNfwBlNSAg+LZJvcmYMWBom95EiBVW9juhSXpZeH6I=; b=vUzrjATA0760PXkfY/rEEuFcPj R1Dhmwia29RBnH9AimhaYVEMgXT968d8IQr3gNYrlnaaZqd6fj7BduqWhsLMygJdTGu5iUxecX1mz UYKNlcL3DDw0tvT/6CCZLdDGYHn5sl9rzJVYUPJjfespkNKUZDYB3xRW1m3Tk+BPMHhJ8QHtPEcn6 VSz+1s/ViGV8v9pQgVvg8a0cCQyNy9aPQIwoC22mAPdKrv9FGjZgo4msnvNXBYOmYB28RUqh//UXb 7BHL56mFAMDQKGxkFs7zg8iLVulrKcAtEI8JrW3w1lmfEtK1iLUi6r+veMTjEDP4UbOQRTnHp6IGz aL1z+PbA==; Received: from [2001:4bb8:184:9a8d:9e34:f7f4:e59e:ad6f] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kb6LB-0005f7-PV; Fri, 06 Nov 2020 18:20:02 +0000 From: Christoph Hellwig To: Jason Gunthorpe Cc: Bjorn Helgaas , Bernard Metzler , Zhu Yanjun , Logan Gunthorpe , Dennis Dalessandro , Mike Marciniszyn , Santosh Shilimkar , linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com, linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org Subject: [PATCH 08/10] PCI/P2PDMA: Remove the DMA_VIRT_OPS hacks Date: Fri, 6 Nov 2020 19:19:39 +0100 Message-Id: <20201106181941.1878556-9-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201106181941.1878556-1-hch@lst.de> References: <20201106181941.1878556-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Now that all users of dma_virt_ops are gone we can remove the workaround for it in the PCI peer to peer code. Signed-off-by: Christoph Hellwig Reviewed-by: Logan Gunthorpe Acked-by: Bjorn Helgaas --- drivers/pci/p2pdma.c | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index de1c331dbed43f..b07018af53876c 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -556,15 +556,6 @@ int pci_p2pdma_distance_many(struct pci_dev *provider, struct device **clients, return -1; for (i = 0; i < num_clients; i++) { -#ifdef CONFIG_DMA_VIRT_OPS - if (clients[i]->dma_ops == &dma_virt_ops) { - if (verbose) - dev_warn(clients[i], - "cannot be used for peer-to-peer DMA because the driver makes use of dma_virt_ops\n"); - return -1; - } -#endif - pci_client = find_parent_pci_dev(clients[i]); if (!pci_client) { if (verbose) @@ -837,17 +828,6 @@ static int __pci_p2pdma_map_sg(struct pci_p2pdma_pagemap *p2p_pgmap, phys_addr_t paddr; int i; - /* - * p2pdma mappings are not compatible with devices that use - * dma_virt_ops. If the upper layers do the right thing - * this should never happen because it will be prevented - * by the check in pci_p2pdma_distance_many() - */ -#ifdef CONFIG_DMA_VIRT_OPS - if (WARN_ON_ONCE(dev->dma_ops == &dma_virt_ops)) - return 0; -#endif - for_each_sg(sg, s, nents, i) { paddr = sg_phys(s); -- 2.28.0