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 A3D8CC432C0 for ; Fri, 29 Nov 2019 09:22:59 +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 73180217D6 for ; Fri, 29 Nov 2019 09:22:59 +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="e+xh1/jt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 73180217D6 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]:56286 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iacUM-0002Q3-Jo for qemu-devel@archiver.kernel.org; Fri, 29 Nov 2019 04:22:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:58058) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iacQ7-0000JN-IH for qemu-devel@nongnu.org; Fri, 29 Nov 2019 04:18:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iacQ3-0002uj-R8 for qemu-devel@nongnu.org; Fri, 29 Nov 2019 04:18:33 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:24826 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 1iacPy-0002oN-9H for qemu-devel@nongnu.org; Fri, 29 Nov 2019 04:18:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575019104; 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=gyQKkIIa/cHDKfTSgCUbJMTe5IRUb+mVbtl9EKtYIAI=; b=e+xh1/jtvwS81vPT6GPQEhHPSQgBSJAFCzegjx1q4KJ5ZzCm+hkxwSciUcpndCbEpRt6xW xlA7xeo26/TBWTP8YMT5rz84RebU5U2eOPxnKadLNJ0qgI8qjCCHVmfrkPqBZIRiRABIyA EdoeKIdhh0f/nhXiT3Tx8qn9d4qv00I= 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-290-_NYMGngYNfmXbUrB8B1nxQ-1; Fri, 29 Nov 2019 04:18:22 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BA9F8800D4E; Fri, 29 Nov 2019 09:18:21 +0000 (UTC) Received: from localhost (unknown [10.43.2.114]) by smtp.corp.redhat.com (Postfix) with ESMTP id E51025D9C5; Fri, 29 Nov 2019 09:18:14 +0000 (UTC) Date: Fri, 29 Nov 2019 10:18:13 +0100 From: Igor Mammedov To: Eduardo Habkost Subject: Re: [PATCH 0/2] RFC: add -mem-shared option Message-ID: <20191129101813.21121399@redhat.com> In-Reply-To: <20191128161021.GA14595@habkost.net> References: <20191128141518.628245-1-marcandre.lureau@redhat.com> <20191128161021.GA14595@habkost.net> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: _NYMGngYNfmXbUrB8B1nxQ-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] 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?TWFyYy1BbmRyw6k=?= Lureau , Richard Henderson , qemu-devel@nongnu.org, stefanha@redhat.com, Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 28 Nov 2019 13:10:21 -0300 Eduardo Habkost wrote: > On Thu, Nov 28, 2019 at 06:15:16PM +0400, Marc-Andr=C3=A9 Lureau wrote: > > Hi, > >=20 > > Setting up shared memory for vhost-user is a bit complicated from > > command line, as it requires NUMA setup such as: m 4G -object > > memory-backend-file,id=3Dmem,size=3D4G,mem-path=3D/dev/shm,share=3Don -= numa > > node,memdev=3Dmem. > >=20 > > Instead, I suggest to add a -mem-shared option for non-numa setups, > > that will make the -mem-path or anonymouse memory shareable. =20 >=20 > Can we make this be a "-m" option? >=20 > Or, even better: can we make "-m" options be automatically > translated to memory-backend-* options somehow? -m SIZE will be translated to a one of memdev properties, so new suboption potentially could be an aliased to another memdev property.