From patchwork Fri Feb 28 12:27:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Beulich X-Patchwork-Id: 11412165 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 35BCE14B4 for ; Fri, 28 Feb 2020 12:27:41 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1BB42246AC for ; Fri, 28 Feb 2020 12:27:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1BB42246AC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1j7ejG-0000T6-9R; Fri, 28 Feb 2020 12:26:54 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1j7ejE-0000So-Fx for xen-devel@lists.xenproject.org; Fri, 28 Feb 2020 12:26:52 +0000 X-Inumbo-ID: 98f84b94-5a25-11ea-991c-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 98f84b94-5a25-11ea-991c-12813bfff9fa; Fri, 28 Feb 2020 12:26:52 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id B9845AF33; Fri, 28 Feb 2020 12:26:50 +0000 (UTC) From: Jan Beulich To: "xen-devel@lists.xenproject.org" References: Message-ID: Date: Fri, 28 Feb 2020 13:27:00 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Subject: [Xen-devel] [PATCH 3/5] IOMMU: iommu_igfx is x86-only X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Kevin Tian , Stefano Stabellini , Julien Grall , Wei Liu , Konrad Wilk , George Dunlap , Andrew Cooper , Ian Jackson Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" In fact it's VT-d specific, but we don't have a way yet to build code for just one vendor. Signed-off-by: Jan Beulich --- a/xen/drivers/passthrough/iommu.c +++ b/xen/drivers/passthrough/iommu.c @@ -32,7 +32,6 @@ bool_t __read_mostly iommu_enabled; bool_t __read_mostly force_iommu; bool_t __read_mostly iommu_verbose; bool __read_mostly iommu_quarantine = true; -bool_t __read_mostly iommu_igfx = 1; bool_t __read_mostly iommu_snoop = 1; bool_t __read_mostly iommu_qinval = 1; bool_t __read_mostly iommu_crash_disable; @@ -73,8 +72,10 @@ static int __init parse_iommu_param(cons force_iommu = val; else if ( (val = parse_boolean("quarantine", s, ss)) >= 0 ) iommu_quarantine = val; +#ifdef CONFIG_X86 else if ( (val = parse_boolean("igfx", s, ss)) >= 0 ) iommu_igfx = val; +#endif else if ( (val = parse_boolean("verbose", s, ss)) >= 0 ) iommu_verbose = val; else if ( (val = parse_boolean("snoop", s, ss)) >= 0 ) --- a/xen/drivers/passthrough/vtd/iommu.c +++ b/xen/drivers/passthrough/vtd/iommu.c @@ -50,6 +50,8 @@ struct mapped_rmrr { /* Possible unfiltered LAPIC/MSI messages from untrusted sources? */ bool __read_mostly untrusted_msi; +bool __read_mostly iommu_igfx = true; + int nr_iommus; static struct tasklet vtd_fault_tasklet; --- a/xen/include/xen/iommu.h +++ b/xen/include/xen/iommu.h @@ -53,7 +53,7 @@ static inline bool_t dfn_eq(dfn_t x, dfn } extern bool_t iommu_enable, iommu_enabled; -extern bool force_iommu, iommu_quarantine, iommu_verbose, iommu_igfx; +extern bool force_iommu, iommu_quarantine, iommu_verbose; extern bool_t iommu_snoop, iommu_qinval; #ifdef CONFIG_X86 @@ -66,6 +66,7 @@ extern enum __packed iommu_intremap { iommu_intremap_restricted, iommu_intremap_full, } iommu_intremap; +extern bool iommu_igfx; #else # define iommu_intremap false #endif