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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6953EC433F5 for ; Mon, 4 Oct 2021 09:51:42 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 238C2610A2 for ; Mon, 4 Oct 2021 09:51:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 238C2610A2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id DD3BB84B72; Mon, 4 Oct 2021 09:51:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WFDesAD5G8l1; Mon, 4 Oct 2021 09:51:41 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp1.osuosl.org (Postfix) with ESMTPS id 89C2484B78; Mon, 4 Oct 2021 09:51:40 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 5E006C0011; Mon, 4 Oct 2021 09:51:40 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2F451C000D for ; Mon, 4 Oct 2021 09:51:39 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 103054061D for ; Mon, 4 Oct 2021 09:51:39 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ki14PcCh1vU6 for ; Mon, 4 Oct 2021 09:51:38 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by smtp2.osuosl.org (Postfix) with ESMTPS id 3B8284039E for ; Mon, 4 Oct 2021 09:51:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633341097; 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: in-reply-to:in-reply-to:references:references; bh=11lDRR5Yz28JFxRtHvrquBSIh5tMxQHAlBJP5+qYWSo=; b=DHWBpIMySfcR2f34HYwHLXAqDbZ7a++6s9liwrPFBsGZ0LsMLTV/6c0ShUgiPCjxdAWE0k mxIAbSLizVyzKCIUX1+PCsCok6iL1egx4qfVoRgsOp3g2HEXjDLeV7R/74VrjrAl+h+Olp tRCjKztEA3Eu76TzajUFMSvA0xb3d9Y= 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-343-TsrUeYovNKGhF15TjTdcUg-1; Mon, 04 Oct 2021 05:51:35 -0400 X-MC-Unique: TsrUeYovNKGhF15TjTdcUg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3B63E8015C7; Mon, 4 Oct 2021 09:51:34 +0000 (UTC) Received: from localhost (unknown [10.39.193.66]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 154DC60657; Mon, 4 Oct 2021 09:51:29 +0000 (UTC) From: Cornelia Huck To: Halil Pasic Subject: Re: [RFC PATCH 1/1] virtio: write back features before verify In-Reply-To: <20211004112528.74442e52.pasic@linux.ibm.com> Organization: Red Hat GmbH References: <20210930012049.3780865-1-pasic@linux.ibm.com> <87r1d64dl4.fsf@redhat.com> <20210930130350.0cdc7c65.pasic@linux.ibm.com> <87ilyi47wn.fsf@redhat.com> <20211001162213.18d7375e.pasic@linux.ibm.com> <87v92g3h9l.fsf@redhat.com> <20211002082128-mutt-send-email-mst@kernel.org> <87pmsl2rzd.fsf@redhat.com> <20211004112528.74442e52.pasic@linux.ibm.com> User-Agent: Notmuch/0.32.1 (https://notmuchmail.org) Date: Mon, 04 Oct 2021 11:51:28 +0200 Message-ID: <87mtnp2k4f.fsf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Cc: linux-s390@vger.kernel.org, markver@us.ibm.com, "Michael S. Tsirkin" , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Halil Pasic , Xie Yongji , Christian Borntraeger X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On Mon, Oct 04 2021, Halil Pasic wrote: > On Mon, 04 Oct 2021 09:01:42 +0200 > Cornelia Huck wrote: > >> On Sat, Oct 02 2021, "Michael S. Tsirkin" wrote: >> >> > On Fri, Oct 01, 2021 at 05:18:46PM +0200, Cornelia Huck wrote: >> >> I'd say we need a hack here so that we assume little-endian config space >> >> if VERSION_1 has been offered; if your patch here works, I assume QEMU >> >> does what we expect (assmuming little-endian as well.) I'm mostly >> >> wondering what happens if you use a different VMM; can we expect it to >> >> work similar to QEMU? >> > >> > Hard to say of course ... hopefully other VMMs are actually >> > implementing the spec. E.g. IIUC rust vmm is modern only. >> >> Yes, I kind of hope they are simply doing LE config space accesses. >> >> Are there any other VMMs that are actually supported on s390x (or other >> BE architectures)? >> > > I think zCX (z/OS Container Extensions) is relevant as it uses virtio. > That is all I know about. Ok, I'll assume that you (IBM) will be able to verify that any fixup will continue to work there. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization