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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 A1975C2D0EA for ; Wed, 8 Apr 2020 09:09:40 +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 6EEBA2074F for ; Wed, 8 Apr 2020 09:09:40 +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="cYsaWIq+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6EEBA2074F 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]:60496 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jM6iJ-0003pu-Id for qemu-devel@archiver.kernel.org; Wed, 08 Apr 2020 05:09:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34048) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jM6ak-0007aH-9O for qemu-devel@nongnu.org; Wed, 08 Apr 2020 05:01:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jM6aZ-0006fx-4T for qemu-devel@nongnu.org; Wed, 08 Apr 2020 05:01:49 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:41419 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jM6aZ-0006ef-1G for qemu-devel@nongnu.org; Wed, 08 Apr 2020 05:01:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1586336498; 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=wFArfiRnUzWisktSAFgkY4kNHsrWzBNlvMfmbIoPbW0=; b=cYsaWIq+YGvG0c7sWqa8h4gljMrjXzUkGlzT/13jGaYCE1Bqq8ItZfpn6ml78m5y/GTnjT OBkYmYuoOlYDGxsmu0xj5UJF3HJpXV+K61pSt/HVybhqIB0X04WcEy9Yi3X0//pcKpudIf 6GC3Arcj+RfEDheLU1dz5PAU2kZRxdA= 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-297-YFiy0FuoMe2gj-1UtYkNCg-1; Wed, 08 Apr 2020 05:01:33 -0400 X-MC-Unique: YFiy0FuoMe2gj-1UtYkNCg-1 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 89813107ACC4; Wed, 8 Apr 2020 09:01:31 +0000 (UTC) Received: from linux.fritz.box (ovpn-113-208.ams2.redhat.com [10.36.113.208]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1A8B15D9CA; Wed, 8 Apr 2020 09:01:25 +0000 (UTC) Date: Wed, 8 Apr 2020 11:01:24 +0200 From: Kevin Wolf To: Keith Busch Subject: Re: [PATCH RESEND v4] nvme: introduce PMR support from NVMe 1.4 spec Message-ID: <20200408090124.GA7914@linux.fritz.box> References: <20200330164656.9348-1-andrzej.jakowski@linux.intel.com> <20200330165518.GA8234@redsun51.ssa.fujisawa.hgst.com> MIME-Version: 1.0 In-Reply-To: <20200330165518.GA8234@redsun51.ssa.fujisawa.hgst.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: haozhong.zhang@intel.com, qemu-block@nongnu.org, stefanha@gmail.com, dgilbert@redhat.com, qemu-devel@nongnu.org, yi.z.zhang@linux.intel.com, Andrzej Jakowski , Stefan Hajnoczi , Klaus Jensen , mreitz@redhat.com, junyan.he@intel.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Am 30.03.2020 um 18:55 hat Keith Busch geschrieben: > On Mon, Mar 30, 2020 at 09:46:56AM -0700, Andrzej Jakowski wrote: > > This patch introduces support for PMR that has been defined as part of = NVMe 1.4 > > spec. User can now specify a pmrdev option that should point to HostMem= oryBackend. > > pmrdev memory region will subsequently be exposed as PCI BAR 2 in emula= ted NVMe > > device. Guest OS can perform mmio read and writes to the PMR region tha= t will stay > > persistent across system reboot. >=20 > Looks pretty good to me. >=20 > Reviewed-by: Keith Busch Thanks, applied to the block-next branch for 5.1. Kevin