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 277C8C10F11 for ; Wed, 24 Apr 2019 16:51:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E0736206A3 for ; Wed, 24 Apr 2019 16:51:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="ahPan2fb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732915AbfDXQvL (ORCPT ); Wed, 24 Apr 2019 12:51:11 -0400 Received: from mail-ed1-f66.google.com ([209.85.208.66]:38719 "EHLO mail-ed1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732571AbfDXQvK (ORCPT ); Wed, 24 Apr 2019 12:51:10 -0400 Received: by mail-ed1-f66.google.com with SMTP id c1so10597350edk.5 for ; Wed, 24 Apr 2019 09:51:09 -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=iqXJdGaFlfiiJTJLgY9f/HTOvJcH9iD1vYBFNl3Eq7Q=; b=ahPan2fb23ZwJK9mMpjdr9I9tFYsGCh6Rybt9NG+QIubaMB4p29seFK7C2udYNBtjL wmzLLWDqhntze0GG9Nyxr1nII6YUI695r8neq+IJDQ4XtEi+63HXwaDRcpr9zYLNJp5B Am7CW9qqJykuKUHbv/x86wRnMANC8tferNKB5nkR4qKOjLEkvc/Jf/1X/OFjXQwMO33B VBIHJwIqKxOOGi3tTmc8aOKAGXFY1T9HWVrbaECBmUoOXUrvrPbhseLPpS5RXxSHG7ZY HQznn91+b757e5KuVboTDuQBT3FBn+qaqbhRaD5ShzJJ8ZfMOgVUrQ9NMUffvkQqr1MX v9Mg== 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=iqXJdGaFlfiiJTJLgY9f/HTOvJcH9iD1vYBFNl3Eq7Q=; b=Vs5Mqu3XPtxkxl8EK4up+gVo3NFFf9rSAFTCn8ZRdymmYCV1MNEtpabL60xan8HR7C uEm+XUcav94wh5sG7IyPLX1euAA+DhHFbndYtyzYpG92LPwYzrGdl4ZZ2MlqfEMvBHHW nxLXHk3cdIo4McifkQmvMLNsfiOuumn+w9kb8suYETQfZ5qfFtv/JtWXNBIiuzD5bZBV ehrqnMtO64YYMx3DcRxx1y+o3wjCgN8OYxlWPK6UXkzOFKZBTqJytstrAcWIVgk9K/rn jlir+41mIbw3mAIjqh8dDdg01jzFSTQhMFkfEiyap7XLZzubWIfg7qKV2S5pkFsDXe6H ti1w== X-Gm-Message-State: APjAAAUJYf27osJAybXuL9tJrcmpmdLUgzLWn9rSlrZn6pwtAz5yAE1U BrUFUETaMqkjUxIS9LzmpcSd0g== X-Google-Smtp-Source: APXvYqy5m0cq67m7iQ3AlUUZD6EjbVPpaKzlEqgdd4iUcMjCKGolFHT1tB4EF306EiVey+BlONNTvw== X-Received: by 2002:a17:906:5855:: with SMTP id h21mr16482031ejs.264.1556124668507; Wed, 24 Apr 2019 09:51:08 -0700 (PDT) Received: from localhost.localdomain ([80.233.44.160]) by smtp.gmail.com with ESMTPSA id w54sm5800702eda.85.2019.04.24.09.51.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Apr 2019 09:51:07 -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 v1] iommu/amd: flush not present cache in iommu_map_page Date: Wed, 24 Apr 2019 17:50:51 +0100 Message-Id: <20190424165051.13614-1-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 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index f7cdd2ab7f11..91fe5cb10f50 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1637,6 +1637,11 @@ static int iommu_map_page(struct protection_domain *dom, update_domain(dom); + if (unlikely(amd_iommu_np_cache && !dom->updated)) { + 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