Received: by 2002:a05:6a10:a852:0:0:0:0 with SMTP id d18csp1119889pxy; Thu, 6 May 2021 00:28:32 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzrpL3oKM+BFzmElesVnQ9e2xO3slVMXBRmZvidn3gx5OfJEOBU0BRB2h0jNf/YCcE9zWTw X-Received: by 2002:a17:906:a403:: with SMTP id l3mr2958847ejz.251.1620286112657; Thu, 06 May 2021 00:28:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1620286112; cv=none; d=google.com; s=arc-20160816; b=Uywmzi1GFlRZf8yQ1pCuaPhRl6uylJypenS84a0qTE42iAd77F5JdyAKOVwXFayRNv fjuhBGeVck5JtGptbsM82BybPLNAi8QOsRVc1Plhmh7hVjHyw3fvPqOYT0opoWEJ+p1F oTjXXqzHBWn79MqhxUglyZ3dDLDxPPdtHTx6Ffkcg/Dj66n5JVlgpEEz7unuc/XgwX0L J1cEWt0pYVMgvNFsMtsTKdDd1FyqaF+dguyDSgC+OYJZ/AoFNwlw3zaMZORoI+M2nTwz VaUbU3oMljxerNPjt/tHYHIbG3hwT52MwcFSRLpFiduWSi9zecKGTxzFsYrt9kBhqyFU 3FQg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=mmRnwL0+7c5+Z5SO1e0LYjJ5FVGGCBEN51tuNvrP2X0=; b=LzFJMD+Ar+9fk3W8ljuRULfv74gkVWkhbSPmZC8qo7fL8kl56QraRnGa8/7ZBZRDjH gBbXHSwP7TP2/+1+t3xuMfD4rbj27hziHqWK/mPFERMp626bmrfwMET/JvZtngK8dH4O TNmOCteH1a87ztHAor95JUr5+9lf8t6LEdaFX+xYv05ti7Xp/kzQaCgEW0VXaZ5yBPB7 3Lst8yKRw5NMg74uy4Gz7lUEq6PtS8dP0XwgiyJCcIyn52X2lkcMEZ2GYLZvjP7HOtPP QQGszjo24mt0kfTm8L8+3hvVMkhznCELq0/rD/nEIPhpyQMP2j9PjLZWk8d4uMlVfTLz vcVQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=dpl4IyQP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id w16si1641847edr.413.2021.05.06.00.28.09; Thu, 06 May 2021 00:28:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=dpl4IyQP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233392AbhEFHZU (ORCPT + 99 others); Thu, 6 May 2021 03:25:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233378AbhEFHZT (ORCPT ); Thu, 6 May 2021 03:25:19 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 95BABC061574; Thu, 6 May 2021 00:24:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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; bh=mmRnwL0+7c5+Z5SO1e0LYjJ5FVGGCBEN51tuNvrP2X0=; b=dpl4IyQPo0BlhWM2jTUcSNiOM5 /T1JxZKErUyUJ9ETGjthgTvZ6+0OE2eNrB29F18aCLTSE3AY/xVRTw0W6UErf9xzj/pLYAIKskR24 9gkXrFzSnnoR6b0tbjou7qUCFLHVaZaFpamiS+LSYEmXJ79F/OeUbkj/AyGD+HpBOz7desj14+edY lUSejZFA7BuloJKBWWjRevjeIajZvfhMZGc2TxvSzC/4NWlQelWzgRFJ0GQWskjKdESm2Q71fXyDM MKGsLUXv63Uiz1DdJstZdNuaRRiLTFtehgz1ms52fqVkX+gi+cE6P/G5IoCOYg3wFwXgGl1M0HtoM TzrY8boA==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1leYKz-001QP0-T6; Thu, 06 May 2021 07:22:27 +0000 Date: Thu, 6 May 2021 08:22:21 +0100 From: Christoph Hellwig To: Catalin Marinas Cc: Will Deacon , Vikram Sethi , Alex Williamson , Mark Kettenis , Marc Zyngier , Shanker Donthineni , "christoffer.dall@arm.com" , "linux-arm-kernel@lists.infradead.org" , "kvmarm@lists.cs.columbia.edu" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , Jason Sequeira Subject: Re: [RFC 1/2] vfio/pci: keep the prefetchable attribute of a BAR region in VMA Message-ID: <20210506072221.GA338890@infradead.org> References: <87eeeqvm1d.wl-maz@kernel.org> <87bl9sunnw.wl-maz@kernel.org> <20210503084432.75e0126d@x1.home.shazbot.org> <20210504083005.GA12290@willie-the-truck> <20210505180228.GA3874@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210505180228.GA3874@arm.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 05, 2021 at 07:02:31PM +0100, Catalin Marinas wrote: > > Furthermore, ioremap() already gives you a Device memory type, and we're > > tight on MAIR space. > > We have MT_DEVICE_GRE currently reserved though no in-kernel user, we > might as well remove it. Please do. The more we can cut down on different memory types, the better.