From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH] kvm tools: Boot to host /bin/sh via 9p by default Date: Tue, 09 Aug 2011 19:59:22 +0300 Message-ID: <4E41676A.90000@redhat.com> References: <1312904014-3538-1-git-send-email-penberg@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, Linus Torvalds , Asias He , Cyrill Gorcunov , Ingo Molnar , Prasad Joshi , Sasha Levin To: Pekka Enberg Return-path: Received: from mx1.redhat.com ([209.132.183.28]:61492 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753011Ab1HIRAI (ORCPT ); Tue, 9 Aug 2011 13:00:08 -0400 In-Reply-To: <1312904014-3538-1-git-send-email-penberg@kernel.org> Sender: kvm-owner@vger.kernel.org List-ID: On 08/09/2011 06:33 PM, Pekka Enberg wrote: > This patch updates 'kvm run' to boot to host filesystem via 9p '/bin/sh' by > default: > > $ ./kvm run > # kvm run -k ../../arch/x86/boot/bzImage -m 320 -c 2 --name guest-3462 > [ 0.000000] Linux version 3.1.0-rc1+ (penberg@tiger) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #7 SMP PREEMPT Tue Aug 9 16:39:20 EEST 2011 > [ 0.000000] Command line: notsc noapic noacpi pci=conf1 reboot=k panic=1 console=ttyS0 earlyprintk=serial init=/bin/sh root=/dev/vda rw root=/dev/root rootflags=rw,trans=virtio,version=9p2000.u rootfstype=9p > > [snip] > > [ 1.803261] VFS: Mounted root (9p filesystem) on device 0:13. > [ 1.805153] devtmpfs: mounted > [ 1.808353] Freeing unused kernel memory: 924k freed > [ 1.810592] Write protecting the kernel read-only data: 12288k > [ 1.816268] Freeing unused kernel memory: 632k freed > [ 1.826030] Freeing unused kernel memory: 1448k freed > sh: cannot set terminal process group (-1): Inappropriate ioctl for device > sh: no job control in this shell > sh-4.1# > Most kernels won't have 9p built-in, so how about building a tiny initrd to load the needed modules? btw, I get # ./kvm run # kvm run -k ../../arch/x86/boot/bzImage -m 1728 -c 24 --name guest-10193 -- error compiling committee.c: too many arguments to function