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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS 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 DD415C10DCE for ; Wed, 18 Mar 2020 16:44:14 +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 A782C20752 for ; Wed, 18 Mar 2020 16:44:14 +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="hBr4RPd/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A782C20752 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]:55532 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jEbnh-00037L-TE for qemu-devel@archiver.kernel.org; Wed, 18 Mar 2020 12:44:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43980) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jEbn7-0002bv-Gq for qemu-devel@nongnu.org; Wed, 18 Mar 2020 12:43:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jEbn6-0003z3-Gr for qemu-devel@nongnu.org; Wed, 18 Mar 2020 12:43:37 -0400 Received: from us-smtp-delivery-74.mimecast.com ([216.205.24.74]:25274) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jEbn6-0003xq-Cj for qemu-devel@nongnu.org; Wed, 18 Mar 2020 12:43:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1584549815; 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=mZR0AOLpqPjE0K3iF3bC4S2fZcphvsNyJ+6EpW3pk98=; b=hBr4RPd/zj3o+oI8MpQok4sZZVucyrfSSGgOf+yX9bZGW35fkZCKminL+Cff1zSjhK/ETG +5xBPtBeAvklF6eFi2EWeYnhJcJ7uGRTTPV2JFGM8HvVYn03x4gGh6Ly7QolmzkvOywBXt m7wHYmQTsaH/0/R6FS9RSoKItwMKfto= 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-283-7Y0PQm-_N221DM1zAkaiDQ-1; Wed, 18 Mar 2020 12:43:33 -0400 X-MC-Unique: 7Y0PQm-_N221DM1zAkaiDQ-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 3FE9518A5528; Wed, 18 Mar 2020 16:43:32 +0000 (UTC) Received: from gondolin (ovpn-113-129.ams2.redhat.com [10.36.113.129]) by smtp.corp.redhat.com (Postfix) with ESMTP id 10EC460BF1; Wed, 18 Mar 2020 16:43:27 +0000 (UTC) Date: Wed, 18 Mar 2020 17:43:23 +0100 From: Cornelia Huck To: Janosch Frank Subject: Re: [PATCH v10 16/16] s390x: Add unpack facility feature to GA1 Message-ID: <20200318174323.0001eb7c.cohuck@redhat.com> In-Reply-To: <20200318143047.2335-17-frankja@linux.ibm.com> References: <20200318143047.2335-1-frankja@linux.ibm.com> <20200318143047.2335-17-frankja@linux.ibm.com> Organization: Red Hat GmbH MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 216.205.24.74 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: borntraeger@de.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org, david@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, 18 Mar 2020 10:30:47 -0400 Janosch Frank wrote: > From: Christian Borntraeger > > The unpack facility is an indication that diagnose 308 subcodes 8-10 > are available to the guest. That means, that the guest can put itself > into protected mode. > > Once it is in protected mode, the hardware stops any attempt of VM > introspection by the hypervisor. > > Some features are currently not supported in protected mode: > * vfio devices > * Migration > * Huge page backings > > Signed-off-by: Christian Borntraeger > Reviewed-by: David Hildenbrand > Reviewed-by: Claudio Imbrenda > Signed-off-by: Janosch Frank > --- > target/s390x/gen-features.c | 1 + > target/s390x/kvm.c | 8 ++++++++ > 2 files changed, 9 insertions(+) Reviewed-by: Cornelia Huck