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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham 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 D4038C7113E for ; Mon, 15 Oct 2018 19:54:49 +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 59BA520881 for ; Mon, 15 Oct 2018 19:54:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 59BA520881 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.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 42Yq0R4hyYzF3S3 for ; Tue, 16 Oct 2018 06:54:47 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=mwb@linux.vnet.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.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 lists.ozlabs.org (Postfix) with ESMTPS id 42Ypxd1dnmzF3Ny for ; Tue, 16 Oct 2018 06:52:21 +1100 (AEDT) Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w9FJnclq018076 for ; Mon, 15 Oct 2018 15:52:18 -0400 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0b-001b2d01.pphosted.com with ESMTP id 2n50quhf70-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 15 Oct 2018 15:52:18 -0400 Received: from localhost by e16.ny.us.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) Mon, 15 Oct 2018 15:52:16 -0400 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w9FJqFLQ27066432 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 15 Oct 2018 19:52:15 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C0CAF12405B; Mon, 15 Oct 2018 16:51:55 -0400 (EDT) Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1F3CF124053; Mon, 15 Oct 2018 16:51:55 -0400 (EDT) Received: from oc5000245537.ibm.com (unknown [9.53.179.212]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP; Mon, 15 Oct 2018 16:51:55 -0400 (EDT) Subject: Fwd: [PATCH v06 2/5] powerpc/drmem: Add internal_flags feature References: <20181015194723.5705.51193.stgit@ltcalpine2-lp9.aus.stglabs.ibm.com> In-Reply-To: <20181015194723.5705.51193.stgit@ltcalpine2-lp9.aus.stglabs.ibm.com> To: linuxppc-dev@lists.ozlabs.org From: Michael Bringmann Openpgp: preference=signencrypt Autocrypt: addr=mwb@linux.vnet.ibm.com; prefer-encrypt=mutual; keydata= xsBNBFcY7GcBCADzw3en+yzo9ASFGCfldVkIg95SAMPK0myXp2XJYET3zT45uBsX/uj9/2nA lBmXXeOSXnPfJ9V3vtiwcfATnWIsVt3tL6n1kqikzH9nXNxZT7MU/7gqzWZngMAWh/GJ9qyg DTOZdjsvdUNUWxtiLvBo7y+reA4HjlQhwhYxxvCpXBeRoF0qDWfQ8DkneemqINzDZPwSQ7zY t4F5iyN1I9GC5RNK8Y6jiKmm6bDkrrbtXPOtzXKs0J0FqWEIab/u3BDrRP3STDVPdXqViHua AjEzthQbGZm0VCxI4a7XjMi99g614/qDcXZCs00GLZ/VYIE8hB9C5Q+l66S60PLjRrxnABEB AAHNLU1pY2hhZWwgVy4gQnJpbmdtYW5uIDxtd2JAbGludXgudm5ldC5pYm0uY29tPsLAeAQT AQIAIgUCVxjsZwIbAwYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQSEdag3dpuTI0NAf8 CKYTDKQLgOSjVrU2L5rM4lXaJRmQV6oidD3vIhKSnWRvPq9C29ifRG6ri20prTHAlc0vycgm 41HHg0y2vsGgNXGTWC2ObemoZBI7mySXe/7Tq5mD/semGzOp0YWZ7teqrkiSR8Bw0p+LdE7K QmT7tpjjvuhrtQ3RRojUYcuy1nWUsc4D+2cxsnZslsx84FUKxPbLagDgZmgBhUw/sUi40s6S AkdViVCVS0WANddLIpG0cfdsV0kCae/XdjK3mRK6drFKv1z+QFjvOhc8QIkkxFD0da9w3tJj oqnqHFV5gLcHO6/wizPx/NV90y6RngeBORkQiRFWxTXS4Oj9GVI/Us7ATQRXGOxnAQgAmJ5Y ikTWrMWPfiveUacETyEhWVl7u8UhZcx3yy2te8O0ay7t9fYcZgIEfQPPVVus89acIXlG3wYL DDPvb21OprLxi+ZJ2a0S5we+LcSWN1jByxJlbWBq+/LcMtGAOhNLpysY1gD0Y4UW/eKS+TFZ 562qKC3k1dBvnV9JXCgeS1taYFxRdVAn+2DwK3nuyG/DDq/XgJ5BtmyC3MMx8CiW3POj+O+l 6SedIeAfZlZ7/xhijx82g93h07VavUQRwMZgZFsqmuxBxVGiav2HB+dNvs3PFB087Pvc9OHe qhajPWOP/gNLMmvBvknn1NToM9a8/E8rzcIZXoYs4RggRRYh6wARAQABwsBfBBgBAgAJBQJX GOxnAhsMAAoJEEhHWoN3abky+RUH/jE08/r5QzaNKYeVhu0uVbgXu5fsxqr2cAxhf+KuwT3T efhEP2alarxzUZdEh4MsG6c+X2NYLbD3cryiXxVx/7kSAJEFQJfA5P06g8NLR25Qpq9BLsN7 ++dxQ+CLKzSEb1X24hYAJZpOhS8ev3ii+M/XIo+olDBKuTaTgB6elrg3CaxUsVgLBJ+jbRkW yQe2S5f/Ja1ThDpSSLLWLiLK/z7+gaqwhnwjQ8Z8Y9D2itJQcj4itHilwImsqwLG7SxzC0NX IQ5KaAFYdRcOgwR8VhhkOIVd70ObSZU+E4pTET1WDz4o65xZ89yfose1No0+r5ht/xWOOrh8 53/hcWvxHVs= Organization: IBM Linux Technology Center X-Forwarded-Message-Id: <20181015194723.5705.51193.stgit@ltcalpine2-lp9.aus.stglabs.ibm.com> Date: Mon, 15 Oct 2018 14:52:14 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 18101519-0072-0000-0000-000003B61AD8 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009881; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000268; SDB=6.01103153; UDB=6.00570984; IPR=6.00883204; MB=3.00023767; MTD=3.00000008; XFM=3.00000015; UTC=2018-10-15 19:52:17 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18101519-0073-0000-0000-000049C45FC3 Message-Id: <396570f6-d132-e0de-1c93-62c23bc00ff6@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-10-15_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810150170 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: Thomas Falcon , Michael Bringmann , Juliet Kim , Tyrel Datwyler , Nathan Fontenot Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" powerpc/drmem: Add internal_flags field to each LMB to allow marking of kernel software-specific operations that need not be exported to other users. For instance, if information about selected LMBs needs to be maintained for subsequent passes through the system, it can be encoded into the LMB array itself without requiring the allocation and maintainance of additional data structures. Signed-off-by: Michael Bringmann --- Changes in v04: -- Add another initialization of 'lmb->internal_flags' to init_drmem_v2_lmbs. --- arch/powerpc/include/asm/drmem.h | 18 ++++++++++++++++++ arch/powerpc/mm/drmem.c | 3 +++ 2 files changed, 21 insertions(+) diff --git a/arch/powerpc/include/asm/drmem.h b/arch/powerpc/include/asm/drmem.h index cfe8598..dbb3e6c 100644 --- a/arch/powerpc/include/asm/drmem.h +++ b/arch/powerpc/include/asm/drmem.h @@ -17,6 +17,7 @@ struct drmem_lmb { u32 drc_index; u32 aa_index; u32 flags; + u32 internal_flags; }; struct drmem_lmb_info { @@ -94,6 +95,23 @@ static inline bool drmem_lmb_reserved(struct drmem_lmb *lmb) return lmb->flags & DRMEM_LMB_RESERVED; } +#define DRMEM_LMBINT_UPDATE 0x00000001 + +static inline void drmem_mark_lmb_update(struct drmem_lmb *lmb) +{ + lmb->internal_flags |= DRMEM_LMBINT_UPDATE; +} + +static inline void drmem_remove_lmb_update(struct drmem_lmb *lmb) +{ + lmb->internal_flags &= ~DRMEM_LMBINT_UPDATE; +} + +static inline bool drmem_lmb_update(struct drmem_lmb *lmb) +{ + return lmb->internal_flags & DRMEM_LMBINT_UPDATE; +} + u64 drmem_lmb_memory_max(void); void __init walk_drmem_lmbs(struct device_node *dn, void (*func)(struct drmem_lmb *, const __be32 **)); diff --git a/arch/powerpc/mm/drmem.c b/arch/powerpc/mm/drmem.c index ded9dbf..f199fe5 100644 --- a/arch/powerpc/mm/drmem.c +++ b/arch/powerpc/mm/drmem.c @@ -207,6 +207,7 @@ static void read_drconf_v1_cell(struct drmem_lmb *lmb, lmb->aa_index = of_read_number(p++, 1); lmb->flags = of_read_number(p++, 1); + lmb->internal_flags = 0; *prop = p; } @@ -265,6 +266,7 @@ static void __walk_drmem_v2_lmbs(const __be32 *prop, const __be32 *usm, lmb.aa_index = dr_cell.aa_index; lmb.flags = dr_cell.flags; + lmb.internal_flags = 0; func(&lmb, &usm); } @@ -441,6 +443,7 @@ static void init_drmem_v2_lmbs(const __be32 *prop, lmb->aa_index = dr_cell.aa_index; lmb->flags = dr_cell.flags; + lmb->internal_flags = 0; } } }