Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755679AbbHFM1S (ORCPT ); Thu, 6 Aug 2015 08:27:18 -0400 Received: from mail-oi0-f49.google.com ([209.85.218.49]:34448 "EHLO mail-oi0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755135AbbHFM1R convert rfc822-to-8bit (ORCPT ); Thu, 6 Aug 2015 08:27:17 -0400 MIME-Version: 1.0 In-Reply-To: <1438858816-29385-1-git-send-email-markmb@redhat.com> References: <1438858816-29385-1-git-send-email-markmb@redhat.com> Date: Thu, 6 Aug 2015 13:27:16 +0100 Message-ID: Subject: Re: QEMU fw_cfg DMA interface From: Stefan Hajnoczi To: =?UTF-8?Q?Marc_Mar=C3=AD?= Cc: linux-kernel , qemu-devel , seabios@seabios.org, Drew , "Kevin O'Connor" , Gerd Hoffmann , Laszlo Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 908 Lines: 28 On Thu, Aug 6, 2015 at 12:00 PM, Marc Marí wrote: > When running a Linux guest on top of QEMU, using the -kernel options, this > is the timing improvement for x86: > > QEMU commit 2be4f242b50a8 and SeaBIOS commit 908a58c1d5ff > QEMU startup time: .078 > BIOS startup time: .060 > Kernel setup time: .578 > Total time: .716 > > QEMU with this patch series and SeaBIOS with this patch series > QEMU startup time: .080 > BIOS startup time: .039 > Kernel setup time: .002 > Total time: .121 Impressive results! Is this a fully-featured QEMU build or did you disable things? Is this the default SeaBIOS build or did you disable things? Stefan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/