From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48844) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XyfDK-0007GF-G9 for qemu-devel@nongnu.org; Wed, 10 Dec 2014 06:13:59 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XyfDB-0007s2-F5 for qemu-devel@nongnu.org; Wed, 10 Dec 2014 06:13:50 -0500 Received: from mail-wi0-x234.google.com ([2a00:1450:400c:c05::234]:53126) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XyfDB-0007rq-4i for qemu-devel@nongnu.org; Wed, 10 Dec 2014 06:13:41 -0500 Received: by mail-wi0-f180.google.com with SMTP id n3so4750226wiv.7 for ; Wed, 10 Dec 2014 03:13:40 -0800 (PST) Sender: Paolo Bonzini Message-ID: <54882ADE.6050306@redhat.com> Date: Wed, 10 Dec 2014 12:13:34 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <1417366783-14242-1-git-send-email-lersek@redhat.com> <5485AF57.6050902@redhat.com> <1418117468.30093.24.camel@nilsson.home.kraxel.org> <54871815.4040103@redhat.com> <20141209155400.GB15695@redhat.com> In-Reply-To: <20141209155400.GB15695@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v2] arm: add fw_cfg to "virt" board List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Richard W.M. Jones" , Peter Maydell Cc: Drew Jones , Ard Biesheuvel , Alexander Graf , QEMU Developers , Gerd Hoffmann , Laszlo Ersek , Christoffer Dall On 09/12/2014 16:54, Richard W.M. Jones wrote: > On a slightly related topic, virtio-mmio traps are slow: > > https://bugzilla.redhat.com/show_bug.cgi?id=1123555 I suspect it's not virtio-mmio, but just KVM on ARM. It would be nice to have a timing test for vmexits in kvm-unit-tests, similar to what is already there for x86. Paolo