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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 C7591C282CE for ; Wed, 24 Apr 2019 06:19:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 95D6E2089F for ; Wed, 24 Apr 2019 06:19:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="mdv59X/r" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729747AbfDXGTG (ORCPT ); Wed, 24 Apr 2019 02:19:06 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:46814 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726002AbfDXGTG (ORCPT ); Wed, 24 Apr 2019 02:19:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=AhL3OBArdLULWWAGd+Y9As6FXTjI1ELiaAccRI7OLMk=; b=mdv59X/rkQ7zpftRusEa6CCo2 ZmT0/jlGXeurZtSF93cqt4+BK0b1LcWB+uw7NMsg/QiXHesfQ5I2coehtuMExCPiMUaCdtJ7HGVjj Z9F72jy9QFmi82bcwUa2m/UBgVZAb43hbpkbElAf5WeqAr1hVBKrKG/pgSlWDjj/BhbaUzRSs+gP9 sDdcC+l8cs+IVsrskYGcIypkP1CkG0BxZmcJxxGLwdOsZ+6wymjCvWvAaSGwGskiMmBPArPREz8D3 IMT1SiJxJNrVO9dCa+xfPYXa+BjozHiJxB1zqC97EKkJCgQOnEBEpv5Io1Lgo0Dn3ztb3VfML0Tc7 k27gYPTaw==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1hJBFH-0000yJ-5L; Wed, 24 Apr 2019 06:19:03 +0000 Date: Tue, 23 Apr 2019 23:19:03 -0700 From: Christoph Hellwig To: Jacob Pan Cc: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Eric Auger , Alex Williamson , Jean-Philippe Brucker , Yi Liu , "Tian, Kevin" , Raj Ashok , Christoph Hellwig , Lu Baolu , Andriy Shevchenko Subject: Re: [PATCH v2 06/19] drivers core: Add I/O ASID allocator Message-ID: <20190424061903.GB30717@infradead.org> References: <1556062279-64135-1-git-send-email-jacob.jun.pan@linux.intel.com> <1556062279-64135-7-git-send-email-jacob.jun.pan@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1556062279-64135-7-git-send-email-jacob.jun.pan@linux.intel.com> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 23, 2019 at 04:31:06PM -0700, Jacob Pan wrote: > The allocator doesn't really belong in drivers/iommu because some > drivers would like to allocate PASIDs for devices that aren't managed by > an IOMMU, using the same ID space as IOMMU. It doesn't really belong in > drivers/pci either since platform device also support PASID. Add the > allocator in drivers/base. I'd still add it to drivers/iommu, just selectable separately from the core iommu code..