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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 E56F0C388F4 for ; Fri, 27 Sep 2019 22:19:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B9C3421BE5 for ; Fri, 27 Sep 2019 22:19:16 +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="kbqjZDu/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728370AbfI0WTP (ORCPT ); Fri, 27 Sep 2019 18:19:15 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:45358 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725306AbfI0WTP (ORCPT ); Fri, 27 Sep 2019 18:19:15 -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=3vhOmfdU3y6eLM058hdQ8gBFeloyzGlQE3QsONV3mF8=; b=kbqjZDu/WAoB3RJgwnRpj69wr 5PyKLZhpAWePMsZKQvv8+ZyAbJBqq1PqtBIFzXeg6jn3Lt1urs47YKsBQHCDg66PQTb2G6i5iJJg7 jtawQ6hWDHYC+RSTbGKsEST9an7uFQ5BEPWDj0xOsXm2JP4I7DXgegTBc8tTHxU9pxkx6bEWIYe/B KgU4i09JvimbuX364xkefRSXpdB9GXSjW9lz0Dr4B0RfjEkg7i9bOw1UFExDMu5F9DW4LjUQC4q+Q /MNgffNXKPvHex/TZ+yFXFkpNC0FW9jFlKUjxzIT5yZLqaNWNDg8Q2k/lsQnnSYoWyvknOmgp4/sN jx+PKBLKQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDya1-0001HT-7d; Fri, 27 Sep 2019 22:19:13 +0000 Date: Fri, 27 Sep 2019 15:19:13 -0700 From: Christoph Hellwig To: Atish Patra Cc: linux-kernel@vger.kernel.org, Albert Ou , Alan Kao , Anup Patel , Palmer Dabbelt , Mike Rapoport , Paul Walmsley , Gary Guo , Greg Kroah-Hartman , linux-riscv@lists.infradead.org, Thomas Gleixner , Allison Randal Subject: Re: [PATCH v2 0/3] Add support for SBI v0.2 Message-ID: <20190927221913.GA4700@infradead.org> References: <20190927000915.31781-1-atish.patra@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190927000915.31781-1-atish.patra@wdc.com> User-Agent: Mutt/1.12.1 (2019-06-15) 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 Thu, Sep 26, 2019 at 05:09:12PM -0700, Atish Patra wrote: > The Supervisor Binary Interface(SBI) specification[1] now defines a > base extension that provides extendability to add future extensions > while maintaining backward compatibility with previous versions. > The new version is defined as 0.2 and older version is marked as 0.1. > > This series adds support v0.2 and a unified calling convention > implementation between 0.1 and 0.2. It also adds minimal SBI functions > from 0.2 as well to keep the series lean. So before we do this game can be please make sure we have a clean 0.2 environment that never uses the legacy extensions as discussed before? Without that all this work is rather futile.