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=-14.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,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 DAB34C43461 for ; Mon, 14 Sep 2020 17:51:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E4B8216C4 for ; Mon, 14 Sep 2020 17:51:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600105878; bh=lhkifu5/PQ/pzDc/3geDWtpPb85uFhoUB0xwafSwb3k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sRSkUaSWKcyQS9Zpp0xRRD9g43Ee34AQwGHw7mGP9UPAgE1PVbA/1CGQVt9I+yrmy IY7YMqwDUUkEthPEVNM38snnxNQ8GL/bCCm+UDGjrQADfS5E2UUrZ9kyG4tegGY68X 3NSM8zdZfLNCRBSjZSLHIUbxUICtfn86BD2vW4n8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726101AbgINRvE (ORCPT ); Mon, 14 Sep 2020 13:51:04 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:39510 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726007AbgINL2Q (ORCPT ); Mon, 14 Sep 2020 07:28:16 -0400 Received: by mail-wm1-f66.google.com with SMTP id b79so10851136wmb.4; Mon, 14 Sep 2020 04:28:15 -0700 (PDT) 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:mime-version:content-transfer-encoding; bh=5v500JUZm9W3PLeTFD54h3IRmGCm5u9hSoivPSmRPeA=; b=kRk+munPhmqq65aQMLLxzS5DWrKd80Nei154wTtqSvNNJA1L8EM6lOm3UsLTcjW/XF 3WM5fiC1xfOp8j7ynEo0mvRbDUegaXb/8ECMtwjD90/OG5uLhgfMhTQ7z53O079xfFp0 ewM7F8ToVaXlDMJLxKj8yPBO8ph1X9kNQQFjOC2l8MFogLD1u1bgPHJmt76RO+9ndy1v W7A4cxJZlN7/3N3ma4LeECWXnKtletTt2iG2nZbbxNXJE6xbpRomtTuZQAGts6u5lwgk qnXm08Kq+6uMj1FGEoY2xFwTXdODp8Dsu87EWNG/wFTLzEG6SLtGYl5SnY/pp2A0r5Ue RztQ== X-Gm-Message-State: AOAM5309TPh4vP58hKfGTv/DOe/5CbQV3aVKgWvxUX+POSybRM4mjGRP og6WfDEe5HC/D0anPRgcMWXmviwMYrk= X-Google-Smtp-Source: ABdhPJyUdJukSZQy+o144Nuc5JlcCGIDb5NRAgTLHhy3hhKD/5DE2/RETjp2sTOsMtnSstmDqgdghA== X-Received: by 2002:a1c:a551:: with SMTP id o78mr3264122wme.4.1600082894396; Mon, 14 Sep 2020 04:28:14 -0700 (PDT) Received: from liuwe-devbox-debian-v2.j3c5onc20sse1dnehy4noqpfcg.zx.internal.cloudapp.net ([51.145.34.42]) by smtp.gmail.com with ESMTPSA id s12sm12024606wmd.20.2020.09.14.04.28.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Sep 2020 04:28:14 -0700 (PDT) From: Wei Liu To: Linux on Hyper-V List Cc: virtualization@lists.linux-foundation.org, Linux Kernel List , Michael Kelley , Vineeth Pillai , Sunil Muthuswamy , Nuno Das Neves , Wei Liu , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Joerg Roedel , iommu@lists.linux-foundation.org (open list:IOMMU DRIVERS) Subject: [PATCH RFC v1 04/18] iommu/hyperv: don't setup IRQ remapping when running as root Date: Mon, 14 Sep 2020 11:27:48 +0000 Message-Id: <20200914112802.80611-5-wei.liu@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200914112802.80611-1-wei.liu@kernel.org> References: <20200914112802.80611-1-wei.liu@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The IOMMU code needs more work. We're sure for now the IRQ remapping hooks are not applicable when Linux is the root. Signed-off-by: Wei Liu --- drivers/iommu/hyperv-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c index 8919c1c70b68..4da684ab292c 100644 --- a/drivers/iommu/hyperv-iommu.c +++ b/drivers/iommu/hyperv-iommu.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "irq_remapping.h" @@ -143,7 +144,7 @@ static int __init hyperv_prepare_irq_remapping(void) int i; if (!hypervisor_is_type(X86_HYPER_MS_HYPERV) || - !x2apic_supported()) + !x2apic_supported() || hv_root_partition) return -ENODEV; fn = irq_domain_alloc_named_id_fwnode("HYPERV-IR", 0); -- 2.20.1