From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [RFC] virtio: use mandatory barriers for remote processor vdevs Date: Tue, 29 Nov 2011 17:19:59 +0200 Message-ID: <20111129151958.GA31789@redhat.com> References: <1322569886-13055-1-git-send-email-ohad@wizery.com> <20111129131110.GC19157@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Ohad Ben-Cohen Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org List-Id: virtualization@lists.linuxfoundation.org On Tue, Nov 29, 2011 at 03:57:19PM +0200, Ohad Ben-Cohen wrote: > > Is an extra branch faster or slower than reverting d57ed95? > > Sorry, unfortunately I have no way to measure this, as I don't have > any virtualization/x86 setup. I'm developing on ARM SoCs, where > virtualization hardware is coming, but not here yet. You can try using the micro-benchmark in tools/virtio/. That does not need virtualization. -- MST