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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 D08A4C43331 for ; Thu, 2 Apr 2020 14:19:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 97FE1206E9 for ; Thu, 2 Apr 2020 14:19:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="PGIxZkKF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 97FE1206E9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:40826 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jK0hA-0007M9-UM for qemu-devel@archiver.kernel.org; Thu, 02 Apr 2020 10:19:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57695) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jK0gQ-0006ts-An for qemu-devel@nongnu.org; Thu, 02 Apr 2020 10:19:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jK0gP-0004YM-AJ for qemu-devel@nongnu.org; Thu, 02 Apr 2020 10:19:02 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:48884 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jK0gP-0004Xw-7G for qemu-devel@nongnu.org; Thu, 02 Apr 2020 10:19:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585837140; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8PKo4vwIJyDomdMhCAXw9ahXUX4yn9vF/SBAUQbHaik=; b=PGIxZkKFyZ66jHnU6ZjXznEvRYwVDN5PaLpmbQLevmiZS4vnZ36J6Mb6YSSkHsSzGkVOf/ maVLFNDkm3QlcRCpFfQdLnjQK7asTPIhSZrfEfa+RCexb7PYhbd2a3FA4ckvq80VLSMldm DQblN+8pBw9IZrHUMAKb/YOx4qazMH4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-104-VJPLdliSM4Sivn6pGmtHaw-1; Thu, 02 Apr 2020 10:18:53 -0400 X-MC-Unique: VJPLdliSM4Sivn6pGmtHaw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 600E5100550D; Thu, 2 Apr 2020 14:18:52 +0000 (UTC) Received: from gondolin (ovpn-113-176.ams2.redhat.com [10.36.113.176]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3F8A926568; Thu, 2 Apr 2020 14:18:47 +0000 (UTC) Date: Thu, 2 Apr 2020 16:18:44 +0200 From: Cornelia Huck To: Christian Borntraeger Subject: Re: [PATCH v3 1/1] vl/s390x: fixup ram sizes for compat machines Message-ID: <20200402161844.6f5ce28b.cohuck@redhat.com> In-Reply-To: <98d87752-ba5d-7ac1-6074-978ade3d2652@de.ibm.com> References: <20200401123754.109602-1-borntraeger@de.ibm.com> <20200401183456.09ba3540@redhat.com> <20200402112735.6961297d.cohuck@redhat.com> <20200402133958.72fabf45@redhat.com> <20200402140536.1b9e7c41@redhat.com> <03077928-4d17-f860-1907-3d1fcea3ab3c@de.ibm.com> <98d87752-ba5d-7ac1-6074-978ade3d2652@de.ibm.com> Organization: Red Hat GmbH MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?B?THVrw6HFoQ==?= Doktor , Thomas Huth , Janosch Frank , David Hildenbrand , qemu-devel , "Dr . David Alan Gilbert" , Halil Pasic , qemu-s390x , Igor Mammedov , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 2 Apr 2020 14:35:21 +0200 Christian Borntraeger wrote: > On 02.04.20 14:09, Christian Borntraeger wrote: > > > > > > On 02.04.20 14:05, Igor Mammedov wrote: > >> On Thu, 2 Apr 2020 13:42:22 +0200 > >> Christian Borntraeger wrote: > >> > >>> On 02.04.20 13:39, Igor Mammedov wrote: > >>> [...] > >>>>>> > >>>>>>> + "MB to match machine restrictions. Consider updating " > >>>>>>> + "the guest definition.i\n", sz / MiB, newsz / MiB); > >>>>>> > >>>>>> also it might be better to use size_to_str() to format numbers > >>>>> > >>>>> The text explicitly talks about 'MB'... not sure if it would be > >>>>> confusing if the user specified MB and ended up with GB or so in this > >>>>> message. > >>>> > >>>> MB can be dropped, since it still might not match what user specified with -m > >>>> it could be specified in b/kb/mb/gb over there > >>>> > >>>> so I'd drop MB and print value size_to_str() returns > >>>> (it will add appropriate suffix if I'm not mistaken) > > > > Another thing: size_to_str is also do rounding (whenever the integer part is >1000). > > Doesnt this result in potential messages where both numbers are the same? > > For example > > 10241263616-> 9.54 GiB > 10241262592-> 9.54 GiB > > The only guaranteed way to actually see a difference is to use MB. > Ok, so it seems the way to go is to use the uint64_t cast, as size_to_str() is unfortunately not doing what we need.