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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 116CBC433FF for ; Tue, 30 Jul 2019 11:27:59 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C23812087F for ; Tue, 30 Jul 2019 11:27:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C23812087F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45yZ6g6GmkzDqVZ for ; Tue, 30 Jul 2019 21:27:55 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45yZ4W1clDzDqMm for ; Tue, 30 Jul 2019 21:26:03 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 45yZ4V3tzcz9s3Z; Tue, 30 Jul 2019 21:26:02 +1000 (AEST) From: Michael Ellerman To: David Gibson , Vaibhav Jain Subject: Re: [PATCH v5 2/4] powerpc/pseries: Update SCM hcall op-codes in hvcall.h In-Reply-To: <20190726085300.GA4865@umbus> References: <20190723161357.26718-1-vaibhav@linux.ibm.com> <20190723161357.26718-3-vaibhav@linux.ibm.com> <20190726085300.GA4865@umbus> Date: Tue, 30 Jul 2019 21:26:01 +1000 Message-ID: <87ef27zrue.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oliver O'Halloran , Laurent Dufour , linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K . V" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" David Gibson writes: > On Tue, Jul 23, 2019 at 09:43:55PM +0530, Vaibhav Jain wrote: >> Update the hvcalls.h to include op-codes for new hcalls introduce to >> manage SCM memory. Also update existing hcall definitions to reflect >> current papr specification for SCM. >> >> The removed hcall op-codes H_SCM_MEM_QUERY, H_SCM_BLOCK_CLEAR were >> transient proposals and there support was never implemented by >> Power-VM nor they were used anywhere in Linux kernel. Hence we don't >> expect anyone to be impacted by this change. >> >> Signed-off-by: Vaibhav Jain > > They really should not have been merged while only interim proposals. > But since they have changed, better to update them than not, obviously. Yes, absolutely agree. It wasn't clear when I merged them that they were *unpublished* and *unstable*. Unfortunately we can't realistically wait for these APIs to be in a published PAPR spec because it seems to take about 5 years for a PAPR spec to escape the IBM firewall. cheers