From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f200.google.com (mail-qt0-f200.google.com [209.85.216.200]) by kanga.kvack.org (Postfix) with ESMTP id 3A14F6B027E for ; Thu, 12 Oct 2017 04:50:39 -0400 (EDT) Received: by mail-qt0-f200.google.com with SMTP id 24so3291608qts.2 for ; Thu, 12 Oct 2017 01:50:39 -0700 (PDT) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id m68si1354203qke.366.2017.10.12.01.50.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Oct 2017 01:50:38 -0700 (PDT) Date: Thu, 12 Oct 2017 09:50:31 +0100 From: Stefan Hajnoczi Subject: Re: [RFC] KVM "fake DAX" device flushing Message-ID: <20171012085031.GA1959@stefanha-x1.localdomain> References: <20171011185146.20295-1-pagupta@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171011185146.20295-1-pagupta@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: Pankaj Gupta Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, linux-nvdimm@ml01.01.org, linux-mm@kvack.org, jack@suse.cz, dan.j.williams@intel.com, riel@redhat.com, haozhong.zhang@intel.com, nilal@redhat.com, kwolf@redhat.com, pbonzini@redhat.com, ross.zwisler@intel.com, david@redhat.com, xiaoguangrong.eric@gmail.com On Thu, Oct 12, 2017 at 12:21:46AM +0530, Pankaj Gupta wrote: > We are sharing the prototype version of 'fake DAX' flushing > interface for the initial feedback. This is still work in progress > and not yet ready for merging. > > Protoype right now just implements basic functionality without advanced > features with two major parts: > > - Qemu virtio-pmem device > It exposes a persistent memory range to KVM guest which at host side is file > backed memory and works as persistent memory device. In addition to this it > provides a virtio flushing interface for KVM guest to do a Qemu side sync for > guest DAX persistent memory range. Please post a draft VIRTIO device specification. The VIRTIO Technical Committee resources and mailing lists are here: https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=virtio#feedback Stefan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org