From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50998) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g6xmO-0004J6-1Q for qemu-devel@nongnu.org; Mon, 01 Oct 2018 08:58:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g6xmH-0008EB-UL for qemu-devel@nongnu.org; Mon, 01 Oct 2018 08:58:26 -0400 Date: Mon, 1 Oct 2018 14:58:09 +0200 From: Cornelia Huck Message-ID: <20181001145809.3ff0e04a.cohuck@redhat.com> In-Reply-To: <20180928093435.198573-1-frankja@linux.ibm.com> References: <20180928093435.198573-1-frankja@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH] s390x: Fence huge pages prior to 3.1 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Janosch Frank Cc: qemu-devel@nongnu.org, david@redhat.com, borntraeger@de.ibm.com, qemu-s390x@nongnu.org, thuth@redhat.com On Fri, 28 Sep 2018 11:34:35 +0200 Janosch Frank wrote: > As the kernel has no way of disallowing the start of a huge page > backed VM, we can migrate a running huge backed VM to a host that has > no huge page KVM support. > > Let's glue huge page support support to the 3.1 machine, so we do not > migrate to a destination host that doesn't have QEMU huge page support > and can stop migration if KVM doesn't indicate support. > > Signed-off-by: Janosch Frank > --- > hw/s390x/s390-virtio-ccw.c | 10 ++++++++++ > include/hw/s390x/s390-virtio-ccw.h | 3 +++ > target/s390x/kvm.c | 6 ++++++ > 3 files changed, 19 insertions(+) Thanks, applied.