From nobody Mon Feb 9 08:57:43 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1617266691; cv=none; d=zohomail.com; s=zohoarc; b=IlvniidV6UWz374COFE6kNnDUlnVC8+5vLBrtAlst46Ys2JOtLrrvlLSYzYa8lMSSn3+UWoxkazI73+VjeNKb/zbW+DOJ11FR2SqID5TtWtZyO9FzYzjzxQUHFVtPxGb44dF+5ietiTLoP9u14Q6XT6C3w+GUq/XTHhUNAFE8/A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617266691; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=5qi6++u9QBggB8E7CGEoTNUFM2DKPu+n9nR4wGp6C/U=; b=TJ5gA1Y53yTaU6PR7VMZNTcaBshznCkxCnui9BLIhOfZ4Nk4qYJgmMaMPlO1w+04x0ck3+WUkxjQDsPmj+cbCdXXnlqfbKQzHDuN2z4iLKC71YW3k9+9dDy6F6c6SRYHBHzcYCwlQYeE8BSMbHBb0DfzUyprJV/ML/kkiGyJteo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=quarantine dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1617266691305115.42098991299167; Thu, 1 Apr 2021 01:44:51 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.104175.198924 (Exim 4.92) (envelope-from ) id 1lRswQ-0006Gi-8X; Thu, 01 Apr 2021 08:44:38 +0000 Received: by outflank-mailman (output) from mailman id 104175.198924; Thu, 01 Apr 2021 08:44:38 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lRswQ-0006Gb-5V; Thu, 01 Apr 2021 08:44:38 +0000 Received: by outflank-mailman (input) for mailman id 104175; Thu, 01 Apr 2021 08:44:37 +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 4.92) (envelope-from ) id 1lRswP-0006GT-5t for xen-devel@lists.xenproject.org; Thu, 01 Apr 2021 08:44:37 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id e703b07c-674a-4a5d-8e3e-639abbca8c6f; Thu, 01 Apr 2021 08:44:36 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id BED10AE8D; Thu, 1 Apr 2021 08:44:35 +0000 (UTC) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: e703b07c-674a-4a5d-8e3e-639abbca8c6f X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1617266675; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5qi6++u9QBggB8E7CGEoTNUFM2DKPu+n9nR4wGp6C/U=; b=RGHEfTZYySo1EMvwvxwxQK9e2SYicqFszHLrDPzRlPxPscjsrTilBG+cu32oDWIgVrNRgj rsUB10uiziJIfDY2WELwdwmhKZIh4X6Zcz+sygR227WN06vDZTw6efxHRbT+ARQn9HZfWR Xrfptbo+SHJFAOofp2QXx4c+OU8GfQs= Subject: [PATCH 2/6] VT-d: don't open-code dmar_readl() From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Kevin Tian References: <157e4a65-6d0b-7ea8-1c23-cd393c8c0d7f@suse.com> Message-ID: Date: Thu, 1 Apr 2021 10:44:35 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: <157e4a65-6d0b-7ea8-1c23-cd393c8c0d7f@suse.com> Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) Content-Type: text/plain; charset="utf-8" While at it also drop the unnecessary use of a local variable there. Signed-off-by: Jan Beulich --- a/xen/drivers/passthrough/vtd/iommu.c +++ b/xen/drivers/passthrough/vtd/iommu.c @@ -990,8 +990,7 @@ static void __do_iommu_page_fault(struct } clear_overflow: /* clear primary fault overflow */ - fault_status =3D readl(iommu->reg + DMAR_FSTS_REG); - if ( fault_status & DMA_FSTS_PFO ) + if ( dmar_readl(iommu->reg, DMAR_FSTS_REG) & DMA_FSTS_PFO ) { spin_lock_irqsave(&iommu->register_lock, flags); dmar_writel(iommu->reg, DMAR_FSTS_REG, DMA_FSTS_PFO);