From patchwork Thu Nov 5 07:42:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11883423 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 501DB6A2 for ; Thu, 5 Nov 2020 07:46:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 22D9B2168B for ; Thu, 5 Nov 2020 07:46:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="MwmPbdTF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726787AbgKEHql (ORCPT ); Thu, 5 Nov 2020 02:46:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725320AbgKEHql (ORCPT ); Thu, 5 Nov 2020 02:46:41 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F10E9C0613CF; Wed, 4 Nov 2020 23:46:40 -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=KPMUUgzv+YFjxRct8tKHBnXGKiPeAkf97Ow3cKkBMFk=; b=MwmPbdTFSwGv/1t+y3wdxnwSHh pXJBtW15nFEBIjMOsBPxCW1/vaMKdrjmZWoM1bfiLtVx3G21l9uHJIAuHoXMsvBmFdQgbxZlpktS2 Fp5oOH056tGbxPbqSJqDcdWf8qYP+yEUJdtzaX5nc47khwwZjo7yzxoiPPFOLGK69NMl0v+Y0DR5V L2/LIfCs+t7WUITT/0g45UhJMC/97/yRZdRT7YEjMGu1gPisyHr7AI+Dq5Zi8VpnnSistD5fCL4It dsR7z7l5YFRpGUI/zxvK52atkImqKI5bI6ANMZe3Wz05LqtdMjWcrytzRrQK8kfkuKglIE7qCFkU2 e17NmNcw==; Received: from 089144208145.atnat0017.highway.a1.net ([89.144.208.145] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kaZyY-0004f6-8j; Thu, 05 Nov 2020 07:46:31 +0000 From: Christoph Hellwig To: Jason Gunthorpe Cc: Bjorn Helgaas , Bernard Metzler , Zhu Yanjun , Logan Gunthorpe , Dennis Dalessandro , Mike Marciniszyn , linux-rdma@vger.kernel.org, linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org Subject: [PATCH 1/6] RMDA/sw: don't allow drivers using dma_virt_ops on highmem configs Date: Thu, 5 Nov 2020 08:42:00 +0100 Message-Id: <20201105074205.1690638-2-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201105074205.1690638-1-hch@lst.de> References: <20201105074205.1690638-1-hch@lst.de> MIME-Version: 1.0 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-pci@vger.kernel.org dma_virt_ops requires that all pages have a kernel virtual address. Introduce a INFINIBAND_VIRT_DMA Kconfig symbol that depends on !HIGHMEM and a large enough dma_addr_t, and make all three driver depend on the new symbol. Signed-off-by: Christoph Hellwig Tested-by: Bernard Metzler --- drivers/infiniband/Kconfig | 6 ++++++ drivers/infiniband/sw/rdmavt/Kconfig | 3 ++- drivers/infiniband/sw/rxe/Kconfig | 2 +- drivers/infiniband/sw/siw/Kconfig | 1 + 4 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index 32a51432ec4f73..81acaf5fb5be67 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -73,6 +73,12 @@ config INFINIBAND_ADDR_TRANS_CONFIGFS This allows the user to config the default GID type that the CM uses for each device, when initiaing new connections. +config INFINIBAND_VIRT_DMA + bool + default y + depends on !HIGHMEM + depends on !64BIT || ARCH_DMA_ADDR_T_64BIT + if INFINIBAND_USER_ACCESS || !INFINIBAND_USER_ACCESS source "drivers/infiniband/hw/mthca/Kconfig" source "drivers/infiniband/hw/qib/Kconfig" diff --git a/drivers/infiniband/sw/rdmavt/Kconfig b/drivers/infiniband/sw/rdmavt/Kconfig index 9ef5f5ce1ff6b0..c8e268082952b0 100644 --- a/drivers/infiniband/sw/rdmavt/Kconfig +++ b/drivers/infiniband/sw/rdmavt/Kconfig @@ -1,7 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-only config INFINIBAND_RDMAVT tristate "RDMA verbs transport library" - depends on X86_64 && ARCH_DMA_ADDR_T_64BIT + depends on INFINIBAND_VIRT_DMA + depends on X86_64 depends on PCI select DMA_VIRT_OPS help diff --git a/drivers/infiniband/sw/rxe/Kconfig b/drivers/infiniband/sw/rxe/Kconfig index a0c6c7dfc1814f..8810bfa680495a 100644 --- a/drivers/infiniband/sw/rxe/Kconfig +++ b/drivers/infiniband/sw/rxe/Kconfig @@ -2,7 +2,7 @@ config RDMA_RXE tristate "Software RDMA over Ethernet (RoCE) driver" depends on INET && PCI && INFINIBAND - depends on !64BIT || ARCH_DMA_ADDR_T_64BIT + depends on INFINIBAND_VIRT_DMA select NET_UDP_TUNNEL select CRYPTO_CRC32 select DMA_VIRT_OPS diff --git a/drivers/infiniband/sw/siw/Kconfig b/drivers/infiniband/sw/siw/Kconfig index b622fc62f2cd6d..3450ba5081df51 100644 --- a/drivers/infiniband/sw/siw/Kconfig +++ b/drivers/infiniband/sw/siw/Kconfig @@ -1,6 +1,7 @@ config RDMA_SIW tristate "Software RDMA over TCP/IP (iWARP) driver" depends on INET && INFINIBAND && LIBCRC32C + depends on INFINIBAND_VIRT_DMA select DMA_VIRT_OPS help This driver implements the iWARP RDMA transport over