Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755932AbbHFMiB (ORCPT ); Thu, 6 Aug 2015 08:38:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45793 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755685AbbHFMh7 convert rfc822-to-8bit (ORCPT ); Thu, 6 Aug 2015 08:37:59 -0400 Date: Thu, 6 Aug 2015 14:37:45 +0200 From: Marc =?UTF-8?B?TWFyw60=?= To: Stefan Hajnoczi Cc: linux-kernel , qemu-devel , seabios@seabios.org, Drew , "Kevin O'Connor" , Gerd Hoffmann , Laszlo Subject: Re: QEMU fw_cfg DMA interface Message-ID: <20150806143745.559f94fa@markmb_rh> In-Reply-To: References: <1438858816-29385-1-git-send-email-markmb@redhat.com> MIME-Version: 1.0 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: 3032 Lines: 119 On Thu, 6 Aug 2015 13:27:16 +0100 Stefan Hajnoczi wrote: > 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? > This is the default QEMU configuration I get for my system. It's not a fully-featured QEMU, but it has a lot of things enabled. SeaBIOS has a default configuration (with debugging disabled). The QEMU configuration is: [...] tcg debug enabled no gprof enabled no sparse enabled no strip binaries yes profiler no static build no pixman system SDL support yes GTK support yes GNUTLS support yes GNUTLS hash yes GNUTLS gcrypt no GNUTLS nettle yes (2.7.1) VTE support yes curses support yes curl support yes mingw32 support no Audio drivers oss Block whitelist (rw) Block whitelist (ro) VirtFS support yes VNC support yes VNC TLS support yes VNC SASL support yes VNC JPEG support yes VNC PNG support yes xen support no brlapi support yes bluez support yes Documentation no GUEST_BASE yes PIE yes vde support yes netmap support no Linux AIO support yes ATTR/XATTR support yes Install blobs yes KVM support yes RDMA support yes TCG interpreter no fdt support yes preadv support yes fdatasync yes madvise yes posix_madvise yes sigev_thread_id yes uuid support yes libcap-ng support yes vhost-net support yes vhost-scsi support yes Trace backends nop spice support yes (0.12.7/0.12.5) rbd support yes xfsctl support no nss used yes libusb yes usb net redir yes OpenGL support no libiscsi support yes libnfs support no build guest agent yes QGA VSS support no QGA w32 disk info no seccomp support yes coroutine backend ucontext coroutine pool yes GlusterFS support yes Archipelago support no gcov gcov gcov enabled no TPM support yes libssh2 support yes TPM passthrough yes QOM debugging yes vhdx yes lzo support yes snappy support yes bzip2 support yes NUMA host support yes tcmalloc support no Marc -- 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/