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 A2649C433EF for ; Mon, 4 Oct 2021 07:01:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D160610E6 for ; Mon, 4 Oct 2021 07:01:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232937AbhJDHDq (ORCPT ); Mon, 4 Oct 2021 03:03:46 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:48680 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232375AbhJDHDn (ORCPT ); Mon, 4 Oct 2021 03:03:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633330914; 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=W/XfU4rWvDAgggUknehKIH8tN+C4S9auUfbUS+SGc1Y=; b=Nx8a1I0q8zI++hdRCwsDmlLz+25pjLsE13NM33Y7xIYEqi47Rp/GCXjIeUU331iXYYkQNO upacob8FpM3LDn2u9tynDC6M0lmKa2x28gVwBzXZ25XD4s1o421O39PgZRlSikj6hih91Y 2M2uNRNmZGXIf42b3wBhcjGiL78QwWk= 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-8-HVuoH5hPNc2doNzFCNwWqQ-1; Mon, 04 Oct 2021 03:01:51 -0400 X-MC-Unique: HVuoH5hPNc2doNzFCNwWqQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CB74B91274; Mon, 4 Oct 2021 07:01:48 +0000 (UTC) Received: from localhost (unknown [10.39.193.66]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D20AF51DFA; Mon, 4 Oct 2021 07:01:44 +0000 (UTC) From: Cornelia Huck To: "Michael S. Tsirkin" Cc: Halil Pasic , Jason Wang , Xie Yongji , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, markver@us.ibm.com, Christian Borntraeger , linux-s390@vger.kernel.org Subject: Re: [RFC PATCH 1/1] virtio: write back features before verify In-Reply-To: <20211002082128-mutt-send-email-mst@kernel.org> 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> User-Agent: Notmuch/0.32.1 (https://notmuchmail.org) Date: Mon, 04 Oct 2021 09:01:42 +0200 Message-ID: <87pmsl2rzd.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org 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)? 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 13E91C433F5 for ; Mon, 4 Oct 2021 07:01:58 +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 B787D61154 for ; Mon, 4 Oct 2021 07:01:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B787D61154 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 8404084AD7; Mon, 4 Oct 2021 07:01:57 +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 5HVWLRksdlep; Mon, 4 Oct 2021 07:01:56 +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 045A984AD2; Mon, 4 Oct 2021 07:01:55 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D84CEC0011; Mon, 4 Oct 2021 07:01:55 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id E2442C000D for ; Mon, 4 Oct 2021 07:01:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id B55804013F for ; Mon, 4 Oct 2021 07:01:54 +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 VdlHL0HtMn4o for ; Mon, 4 Oct 2021 07:01:53 +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 [170.10.133.124]) by smtp2.osuosl.org (Postfix) with ESMTPS id 9DA1E400BA for ; Mon, 4 Oct 2021 07:01:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633330912; 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=W/XfU4rWvDAgggUknehKIH8tN+C4S9auUfbUS+SGc1Y=; b=K/fDmMqDuqVpMEXPlCQ7atOmlpdmi+hsMXTS67OdBQowpfI/bfbu8ezJ3WCKq0Q9My7NZw Ke9wIPi3JdQRyOaSMlzLOTM7jILTt94x4rfZID6Nd4yztXSR/qsbjVmEuVgbPE0inj1aD4 F2O2+ogeElYsR2Ztjxf09fsXNsfJ5X4= 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-8-HVuoH5hPNc2doNzFCNwWqQ-1; Mon, 04 Oct 2021 03:01:51 -0400 X-MC-Unique: HVuoH5hPNc2doNzFCNwWqQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CB74B91274; Mon, 4 Oct 2021 07:01:48 +0000 (UTC) Received: from localhost (unknown [10.39.193.66]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D20AF51DFA; Mon, 4 Oct 2021 07:01:44 +0000 (UTC) From: Cornelia Huck To: "Michael S. Tsirkin" Subject: Re: [RFC PATCH 1/1] virtio: write back features before verify In-Reply-To: <20211002082128-mutt-send-email-mst@kernel.org> 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> User-Agent: Notmuch/0.32.1 (https://notmuchmail.org) Date: Mon, 04 Oct 2021 09:01:42 +0200 Message-ID: <87pmsl2rzd.fsf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Cc: linux-s390@vger.kernel.org, markver@us.ibm.com, Christian Borntraeger , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Halil Pasic , Xie Yongji 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 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)? _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization