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 B76A4C10F14 for ; Thu, 11 Apr 2019 18:49:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8425E20663 for ; Thu, 11 Apr 2019 18:49:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="Kz0209+s" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726930AbfDKStL (ORCPT ); Thu, 11 Apr 2019 14:49:11 -0400 Received: from mail-ed1-f65.google.com ([209.85.208.65]:44030 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726857AbfDKStI (ORCPT ); Thu, 11 Apr 2019 14:49:08 -0400 Received: by mail-ed1-f65.google.com with SMTP id w3so6123507edu.10 for ; Thu, 11 Apr 2019 11:49:07 -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:in-reply-to:references; bh=0ptM0TW5MEf0wZjhcNVg+kVepdW4r8Z6tyROfJJShQo=; b=Kz0209+sKNZfmB0yWwNPjjrMA+GYb4rsz3YQ+7qzCBKV0K8VKU+rELf+Zl1rDwGfGG UDqhVf2LzXA6K1Mp+V7RE4dqFrJsHX5w+JbTNVOgDNMqnsvq1/Svzxa1O30Nwx4bNza7 xhOejAKAbe35ytPwR0TZVkNIacGaIechwtfh4zN2DCFIKQ4M9BguB3dgKppQ9rukI4fk jwu4Kh6E1Kp4KE4cvVyzWTm9dLB+7BauhZN2nsIMnKgsjVX0U/GpqN2Ak+4MJtwQ7Rct vag21Of0Bv8JJEz+PXrI7LQkFSMnYl4wWcIJZDQCt3rzHh/G7O3Wjvfv8J/dr1KSZ6iE ULLA== 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:in-reply-to :references; bh=0ptM0TW5MEf0wZjhcNVg+kVepdW4r8Z6tyROfJJShQo=; b=QibtQlw7C4EfV36ZQooN+ANxCJVXXCH31fPF5dOpBQvZfJOmYtPtYuSY3FhkCVsxPb VUKhzvx1mecA/eCfewncxET3rAYWlZIcduiYmSDkttCUSjJw4FbB44tMKmczIaHPX5dX eiO0u5EMm/6IiGjL1QxOCUVGh3J1dSqanWP1ltoOUi5iGS9umk8K53uI8ObWy33cWzAQ 7ay33C1/FSyAI1k83XgxodAMjDA9L9j/jrQcQR+6M0x84VzAIEn0grI+1wXynAQzbCYd J68PBxzcVKSo/X7p24Ln6dj3zLvH9O0ci4iRHZkbbGXsugfIeRdH3OYVghLxy8n425lF Aidg== X-Gm-Message-State: APjAAAXipFlZCV2wCLY/u5WSCZ+aKuVEk5iiBDlqXGAxdHkA3+pEbaHW ISFyFoEXQH6mTcV1kn9rmBRONw== X-Google-Smtp-Source: APXvYqxPgBo+MMzWroNLnpmi2H77XJDBCOGidMozjjYD68K8alQvz4uZiMPtc7ZU8Kl0PrPPn+MeYg== X-Received: by 2002:a05:6402:558:: with SMTP id i24mr26522920edx.51.1555008547040; Thu, 11 Apr 2019 11:49:07 -0700 (PDT) Received: from localhost.localdomain ([80.233.32.123]) by smtp.gmail.com with ESMTPSA id b10sm1285130edi.28.2019.04.11.11.49.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Apr 2019 11:49:06 -0700 (PDT) From: Tom Murphy To: iommu@lists.linux-foundation.org Cc: dima@arista.com, jamessewart@arista.com, murphyt7@tcd.ie, Tom Murphy , Joerg Roedel , Will Deacon , Robin Murphy , Marek Szyprowski , Kukjin Kim , Krzysztof Kozlowski , Matthias Brugger , Rob Clark , Andy Gross , David Brown , Heiko Stuebner , Thomas Gleixner , Marc Zyngier , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org Subject: [PATCH 5/9] iommu/amd: Implement .flush_np_cache Date: Thu, 11 Apr 2019 19:47:34 +0100 Message-Id: <20190411184741.27540-6-tmurphy@arista.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190411184741.27540-1-tmurphy@arista.com> References: <20190411184741.27540-1-tmurphy@arista.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implement flush_np_cache for the AMD iommu driver. This allows the amd iommu non present cache to be flushed if amd_iommu_np_cache is set. Signed-off-by: Tom Murphy --- drivers/iommu/amd_iommu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index b319e51c379b..2d4ee10626b4 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1319,6 +1319,18 @@ static void domain_flush_devices(struct protection_domain *domain) device_flush_dte(dev_data); } +static void amd_iommu_flush_np_cache(struct iommu_domain *domain, + unsigned long iova, size_t size) +{ + struct protection_domain *dom = to_pdomain(domain); + + if (unlikely(amd_iommu_np_cache)) { + domain_flush_pages(dom, iova, size); + domain_flush_complete(dom); + } +} + + /**************************************************************************** * * The functions below are used the create the page table mappings for @@ -3263,6 +3275,7 @@ const struct iommu_ops amd_iommu_ops = { .flush_iotlb_all = amd_iommu_flush_iotlb_all, .iotlb_range_add = amd_iommu_iotlb_range_add, .iotlb_sync = amd_iommu_flush_iotlb_all, + .flush_np_cache = amd_iommu_flush_np_cache, }; /***************************************************************************** -- 2.17.1