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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC86CC05027 for ; Tue, 14 Feb 2023 05:20:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230092AbjBNFUL (ORCPT ); Tue, 14 Feb 2023 00:20:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229632AbjBNFUJ (ORCPT ); Tue, 14 Feb 2023 00:20:09 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F50F271D; Mon, 13 Feb 2023 21:20:06 -0800 (PST) Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31E5HlYT006974; Tue, 14 Feb 2023 05:19:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : in-reply-to : references : date : message-id : mime-version : content-type; s=pp1; bh=on/G+7xydrT612HiE9+iKfuHNvPuUmqw1zf4SLBWcm0=; b=Ddf+SX016z+OY+svfB5UhuyzyWyFCKz62U+PzeZfpNx73/+72O/7J420rp0npmVBUq+5 0rJUA1cGeeCEx/yZmj63ym5NJoegwYm9J+KzZnur9aWuxj1DY9xfSLGy7Bkw1f7DTYHK PsmMHE8q5zG8DF36X2WakD5pwkNI6QGEuOu3/m4AmUr+P4XQCD3ze1DYz1W79/AZIld5 DJEMh+2ufJLMPR1oo+b4pBVrg4rxf4jzEGwBI5UKulOZyConQO4EfQdnqdjDC/h2Xkks sjrQzRDK2BXzj29bYmtL4H22+UonDwpIkHIIjJmc7NQBgIiYQ/dBtzOcxxXRmSpcSLQD +Q== Received: from ppma04wdc.us.ibm.com (1a.90.2fa9.ip4.static.sl-reverse.com [169.47.144.26]) by mx0b-001b2d01.pphosted.com (PPS) with ESMTPS id 3nr41e00kf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 14 Feb 2023 05:19:45 +0000 Received: from pps.filterd (ppma04wdc.us.ibm.com [127.0.0.1]) by ppma04wdc.us.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 31E1BSFv020028; Tue, 14 Feb 2023 05:19:44 GMT Received: from smtprelay07.dal12v.mail.ibm.com ([9.208.130.99]) by ppma04wdc.us.ibm.com (PPS) with ESMTPS id 3np2n6x2ym-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 14 Feb 2023 05:19:44 +0000 Received: from smtpav02.wdc07v.mail.ibm.com (smtpav02.wdc07v.mail.ibm.com [10.39.53.229]) by smtprelay07.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 31E5Jhrv37683604 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 14 Feb 2023 05:19:44 GMT Received: from smtpav02.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B3D535805B; Tue, 14 Feb 2023 05:19:43 +0000 (GMT) Received: from smtpav02.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8C0B858058; Tue, 14 Feb 2023 05:19:43 +0000 (GMT) Received: from localhost (unknown [9.211.96.43]) by smtpav02.wdc07v.mail.ibm.com (Postfix) with ESMTP; Tue, 14 Feb 2023 05:19:43 +0000 (GMT) From: Nathan Lynch To: Stephen Rothwell , Michael Ellerman Cc: Linux Next Mailing List , PowerPC , Linux Kernel Mailing List Subject: Re: linux-next: qemu boot log difference today In-Reply-To: <20230214143150.7c7fdd05@canb.auug.org.au> References: <20230214143150.7c7fdd05@canb.auug.org.au> Date: Mon, 13 Feb 2023 23:19:43 -0600 Message-ID: <878rh0aknk.fsf@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: s3pa4hTPdjUeE41BhGsKVamhkK-zeFZ2 X-Proofpoint-GUID: s3pa4hTPdjUeE41BhGsKVamhkK-zeFZ2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-14_03,2023-02-13_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 clxscore=1011 priorityscore=1501 impostorscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 mlxscore=0 mlxlogscore=999 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302140041 Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org Stephen Rothwell writes: > > Today's qemu boot log shows 256k extra in reserved memory: > > - Memory: 2046080K/2097152K available (14720K kernel code, 2944K rwdata, 18048K rodata, 5184K init, 1431K bss, 51072K reserved, 0K cma-reserved) > + Memory: 2045824K/2097152K available (14720K kernel code, 2944K rwdata, 18048K rodata, 5184K init, 1439K bss, 51328K reserved, 0K cma-reserved) > > I don't know what has caused this. Assuming it's pseries, it's the RTAS work area allocator reserving the memory. 43033bc62d34 powerpc/pseries: add RTAS work area allocator