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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6701C433F5 for ; Tue, 12 Oct 2021 05:35:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB1406108F for ; Tue, 12 Oct 2021 05:35:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232579AbhJLFhb (ORCPT ); Tue, 12 Oct 2021 01:37:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229739AbhJLFh2 (ORCPT ); Tue, 12 Oct 2021 01:37:28 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8E8DC061570; Mon, 11 Oct 2021 22:35:26 -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=BSSAC90BiE8gg+UZzsBqoP8nG2ttujvFSkUF5owSkxY=; b=MzXQA4NAznHV2pOmBegGNgm87K oVvwG/zN+yRPIuuYShlDqNtJYhMRNhkmqMZWNbAGWU49/Nv/2aW0znA9f/78BPDOtCjiwwQ83WulP TkiMflpjzdtJOgE6ux0vY80O5LkHY9rVp+YfZ6ERYdw9pl5b/phfUwwQuVO1nW524yrgR9bXDK52v iQtcN1C4SwI2Vszu9JjLlNiMm+aYLX8nchJCdIvnJjMHdYZXD6DxxaeOfocpJDQv2kd3vaGZaz7xA GdpMpGjxJoO6YOsVq7aZSRDvbAsE3E77p4d3rWhsorSBG3Ni1XElTYbf6rNlFf7ZzoRSfhDeAHUYF e3s2gKcw==; Received: from hch by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1maANi-006Ezp-GU; Tue, 12 Oct 2021 05:31:43 +0000 Date: Tue, 12 Oct 2021 06:31:18 +0100 From: Christoph Hellwig To: "Michael S. Tsirkin" Cc: Andi Kleen , Christoph Hellwig , Kuppuswamy Sathyanarayanan , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Bjorn Helgaas , Richard Henderson , Thomas Bogendoerfer , James E J Bottomley , Helge Deller , "David S . Miller" , Arnd Bergmann , Jonathan Corbet , Paolo Bonzini , David Hildenbrand , Andrea Arcangeli , Josh Poimboeuf , Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , x86@kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH v5 12/16] PCI: Add pci_iomap_host_shared(), pci_iomap_host_shared_range() Message-ID: References: <20211009003711.1390019-1-sathyanarayanan.kuppuswamy@linux.intel.com> <20211009003711.1390019-13-sathyanarayanan.kuppuswamy@linux.intel.com> <20211011142956-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211011142956-mutt-send-email-mst@kernel.org> 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 Mon, Oct 11, 2021 at 03:09:09PM -0400, Michael S. Tsirkin wrote: > The reason we have trouble is that it's not clear what does the API mean > outside the realm of TDX. > If we really, truly want an API that says "ioremap and it's a hardened > driver" then I guess ioremap_hardened_driver is what you want. Yes. And why would be we ioremap the BIOS anyway? It is not I/O memory in any of the senses we generally use ioremap for.