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 ws5-mx01.kavi.com (ws5-mx01.kavi.com [34.193.7.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DD4ABC072A2 for ; Fri, 17 Nov 2023 09:37:54 +0000 (UTC) Received: from lists.oasis-open.org (oasis.ws5.connectedcommunity.org [10.110.1.242]) by ws5-mx01.kavi.com (Postfix) with ESMTP id 1E4089344C for ; Fri, 17 Nov 2023 09:37:54 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id F1622986E24 for ; Fri, 17 Nov 2023 09:37:53 +0000 (UTC) Received: from host09.ws5.connectedcommunity.org (host09.ws5.connectedcommunity.org [10.110.1.97]) by lists.oasis-open.org (Postfix) with QMQP id D7FEE986E1A; Fri, 17 Nov 2023 09:37:53 +0000 (UTC) Mailing-List: contact virtio-comment-help@lists.oasis-open.org; run by ezmlm List-ID: Sender: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id C76A6986E1B for ; Fri, 17 Nov 2023 09:37:53 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-MC-Unique: I4wBYq93OB2JqEX743wBNA-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700213869; x=1700818669; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=31LYPsZ53S4jcmhtwlFirKuSbGrD8Lkk0VCtvdCaMCc=; b=G67F2tBBIcrSvPdHZtzPTQ/RJx6s8f8RyD9IV6CBlvd7ZEZTLFNHVDWek+mHbjV81Y L9/3k9pp5LLu4vbbg8F4XB6NOW87owM50chX2tZngHchDnVES+x7sbDd+7TbzgoRuPfi 0dIvx09EvZOnRKRIBZpNc8DkwwgWmtx1PjvJQdjthOkMJkM/iQX9GLxdSURougmiA5i8 VsK6Bi6moUcalm32Siy721viv/9UPsCpZrdacsp6C2KgY0GfARn1RXLe64dymLPZ4ufJ c2Hev6AOzrWDIeb+CHtQMfwy6BbYRg7+6DN54QY2chQWZySHnNs68zFQwcG9uTLVaxuD 4unw== X-Gm-Message-State: AOJu0YyEr779QHwYI5MQxS9hWRdZiGNqzVEU4nTzdczxMYRGCEEToeJd +gP0cpnifuOFikwyXfEp5cK3cVplHWA37Dbu39w1p69RK5+fU2iawzKUttUT7DsJlbohHPixQmL 2gf531raE2WUeia9ZvnfueT6A/8VZoQ2fmQ== X-Received: by 2002:adf:e589:0:b0:32f:8a1e:6ed9 with SMTP id l9-20020adfe589000000b0032f8a1e6ed9mr12854332wrm.23.1700213869737; Fri, 17 Nov 2023 01:37:49 -0800 (PST) X-Google-Smtp-Source: AGHT+IGz5NOcKWeNiBL8yO+OPNh6dMD4Ek/wln9+7RpONP93Vv4JYYhFhwVJ84CenPZbIfkYL6sf4Q== X-Received: by 2002:adf:e589:0:b0:32f:8a1e:6ed9 with SMTP id l9-20020adfe589000000b0032f8a1e6ed9mr12854322wrm.23.1700213869392; Fri, 17 Nov 2023 01:37:49 -0800 (PST) Date: Fri, 17 Nov 2023 04:37:44 -0500 From: "Michael S. Tsirkin" To: Parav Pandit Cc: Jason Wang , "virtio-comment@lists.oasis-open.org" , "cohuck@redhat.com" , "sburla@marvell.com" , Shahaf Shuler , Maor Gottlieb , Yishai Hadas , "lingshan.zhu@intel.com" Message-ID: <20231117042446-mutt-send-email-mst@kernel.org> References: <20231116023443-mutt-send-email-mst@kernel.org> <20231116064611-mutt-send-email-mst@kernel.org> <20231116121958-mutt-send-email-mst@kernel.org> <20231116131303-mutt-send-email-mst@kernel.org> <20231117031251-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Subject: [virtio-comment] Re: [PATCH v3 6/8] admin: Add theory of operation for write recording commands On Fri, Nov 17, 2023 at 09:14:21AM +0000, Parav Pandit wrote: > > > > From: Michael S. Tsirkin > > Sent: Friday, November 17, 2023 2:16 PM > > In any case you can safely assume that many users will have migration that takes > > seconds and minutes. > > Strange, but ok. I don't see any problem with current method. > 8MB is used for very large VM of 1TB takes minutes. Should be fine. The problem is simple: vendors selling devices have no idea how large the VM will be. So you have to over-provision for the max VM size. If there was a way to instead allocate that in host memory, that would improve on this. -- MST This publicly archived list offers a means to provide input to the OASIS Virtual I/O Device (VIRTIO) TC. In order to verify user consent to the Feedback License terms and to minimize spam in the list archive, subscription is required before posting. Subscribe: virtio-comment-subscribe@lists.oasis-open.org Unsubscribe: virtio-comment-unsubscribe@lists.oasis-open.org List help: virtio-comment-help@lists.oasis-open.org List archive: https://lists.oasis-open.org/archives/virtio-comment/ Feedback License: https://www.oasis-open.org/who/ipr/feedback_license.pdf List Guidelines: https://www.oasis-open.org/policies-guidelines/mailing-lists Committee: https://www.oasis-open.org/committees/virtio/ Join OASIS: https://www.oasis-open.org/join/