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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 5AA67C10F11 for ; Wed, 24 Apr 2019 14:20:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 283A6218FE for ; Wed, 24 Apr 2019 14:20:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="MZCe//Am" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729041AbfDXOUE (ORCPT ); Wed, 24 Apr 2019 10:20:04 -0400 Received: from mail-ed1-f68.google.com ([209.85.208.68]:42321 "EHLO mail-ed1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725935AbfDXOUE (ORCPT ); Wed, 24 Apr 2019 10:20:04 -0400 Received: by mail-ed1-f68.google.com with SMTP id u23so15757413eds.9 for ; Wed, 24 Apr 2019 07:20:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arista.com; s=googlenew; h=from:to:cc:subject:date:message-id; bh=GEXaBMD3U4sWuwXoHlsxPa0R20Q7P10dRF3KDQL2tvo=; b=MZCe//Am5X21XLFVYlr3pytX7fCBJ/q1M912/aF3gzt4UqSFUTgrB26DmfRZYqceQg ygy/yVUZWBxf8ANuZE1PuNElLSzIaZbCIEpWYbP06zULQ4fX5tKg2wOTL0a1fwJ3qUW3 ok/Zr+2hDDlnIP+y1tFT51fKLh1DCYiw59PETX6diQDrGd8nKeveMN016v/vbZFXqWML BSTQVwx0kDW7Ma0T9wVtKm7GiNxNScSDGYfHxZVm1U6aqFLgbIqYoayPy66QFWxaMc2j I0r0NSmw29K0e7nY06nyM0Ja5ZATnurmdkCgnNWs/gn32j3oOqpIXitKVpuU+EF1xZmc t63w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=GEXaBMD3U4sWuwXoHlsxPa0R20Q7P10dRF3KDQL2tvo=; b=ubxpKxHQBpqAYVPfBoG6q1cru49AxpYHiCfpddNM0P+BtktFtpz6dQHj+G4o+xMtuR sYvUpQGpg+TnQFyhWO4BXUWBSnIwZkYvNVP9LZfakEL4OlflUn9EpqHRvs3YTfmRe9zg RbzxHR2/iQEWkMbY7eMgdWUpx/b5R5zNDe+KcbQzTKr9e4eoRBJkJXzkqGXvtC8Yh1re +SG2zDamKGEoOR+m3s9TXoTA7TWzh6weBfDkKJqS7qrstXjfkK96nYTvPgsnkIOLde27 igY0lKGyO7zdvnX7ELM/DWFobxHyWv1GqUdzbK+o+sAUZK2FgeZP9dXjN1waWzOBF5/U xQ/w== X-Gm-Message-State: APjAAAWEL2YKsEaJOFrVDhdmHWKolsxnLCSYUXiSqISQXHYv6Ba5i6vy mol21QgZR9e361D/4kxcHngJ9g== X-Google-Smtp-Source: APXvYqxQoWkEWkvX0AnpeUvXGVH2qnp8HAFlWH0AjCbnHDYypkrpxh2W0ZiM0+baEcssjpVT7UdWEA== X-Received: by 2002:aa7:d50a:: with SMTP id y10mr20113750edq.261.1556115602709; Wed, 24 Apr 2019 07:20:02 -0700 (PDT) Received: from linux-ThinkPad-X1-Carbon-5th.Hitronhub.home ([89.100.89.87]) by smtp.gmail.com with ESMTPSA id r24sm1582159ejo.84.2019.04.24.07.20.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Apr 2019 07:20:02 -0700 (PDT) From: Tom Murphy To: iommu@lists.linux-foundation.org Cc: murphyt7@tcd.ie, Tom Murphy , Joerg Roedel , linux-kernel@vger.kernel.org Subject: [PATCH] iommu/amd: flush not present cache in iommu_map_page Date: Wed, 24 Apr 2019 15:18:59 +0100 Message-Id: <20190424141900.8883-1-tmurphy@arista.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org check if there is a not-present cache present and flush it if there is. Signed-off-by: Tom Murphy --- drivers/iommu/amd_iommu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index f7cdd2ab7f11..8ef43224aae0 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1636,6 +1636,12 @@ static int iommu_map_page(struct protection_domain *dom, pte[i] = __pte; update_domain(dom); + if (!dom->updated) { + if (unlikely(amd_iommu_np_cache)) { + domain_flush_pages(dom, bus_addr, page_size); + domain_flush_complete(dom); + } + } /* Everything flushed out, free pages now */ free_page_list(freelist); -- 2.17.1