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=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 CC7CBC2BA19 for ; Tue, 14 Apr 2020 12:21:27 +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 8339420732 for ; Tue, 14 Apr 2020 12:21:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8339420732 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com 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 491l2r70VfzDqd3 for ; Tue, 14 Apr 2020 22:21:24 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 491kzm03CwzDqC9 for ; Tue, 14 Apr 2020 22:18:44 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) by bilbo.ozlabs.org (Postfix) with ESMTP id 491kzk4bSWz8swc for ; Tue, 14 Apr 2020 22:18:42 +1000 (AEST) Received: by ozlabs.org (Postfix) id 491kzk3Fmmz9sSy; Tue, 14 Apr 2020 22:18:42 +1000 (AEST) Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=psampat@linux.ibm.com; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 491kzj6gwGz9sSq for ; Tue, 14 Apr 2020 22:18:41 +1000 (AEST) Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 03EC4ZUQ102262 for ; Tue, 14 Apr 2020 08:18:38 -0400 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 30cxxqephd-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 14 Apr 2020 08:18:37 -0400 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 14 Apr 2020 13:18:08 +0100 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 03ECIXAc53477610 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 14 Apr 2020 12:18:33 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8B560AE04D; Tue, 14 Apr 2020 12:18:33 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 08813AE053; Tue, 14 Apr 2020 12:18:32 +0000 (GMT) Received: from [9.199.55.119] (unknown [9.199.55.119]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 14 Apr 2020 12:18:31 +0000 (GMT) Subject: Re: [PATCH v6 2/3] powerpc/powernv: Introduce support and parsing for self-save API To: ego@linux.vnet.ibm.com References: <20200326071034.12838-1-psampat@linux.ibm.com> <20200326071034.12838-3-psampat@linux.ibm.com> <20200414074702.GF24277@in.ibm.com> From: Pratik Sampat Date: Tue, 14 Apr 2020 17:48:31 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200414074702.GF24277@in.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-TM-AS-GCONF: 00 x-cbid: 20041412-0008-0000-0000-000003708189 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20041412-0009-0000-0000-00004A923005 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.676 definitions=2020-04-14_05:2020-04-14, 2020-04-14 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 priorityscore=1501 suspectscore=1 impostorscore=0 phishscore=0 clxscore=1015 malwarescore=0 bulkscore=0 mlxlogscore=999 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004140097 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: pratik.r.sampat@gmail.com, linuxram@us.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, oohall@gmail.com, skiboot@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hello Gautham, [..snip..] >> + >> + if (curr_spr.supported_mode & FIRMWARE_SELF_SAVE) { >> + rc = opal_slw_self_save_reg(pir, >> + curr_spr.spr); >> + if (rc != 0) >> + return rc; >> + switch (curr_spr.spr) { >> + case SPRN_LPCR: >> + is_lpcr_self_save = true; > Could you consider converting is_lpcr_self_save and is_ptcr_self_save > into static_keys ? For reference see commit > 14c73bd344da("powerpc/vcpu: Assume dedicated processors as > non-preempt") > Sure, using static keys is cleaner. I'll also address the other nits mentioned in the e-mail earlier. Thanks for the review. Pratik