From mboxrd@z Thu Jan 1 00:00:00 1970 From: Francisco Rocha Subject: Re: (no subject) Date: Fri, 6 Apr 2012 15:53:39 +0100 Message-ID: <5E615268CEC26C4E920B9D9911A2307C0345ECC5B68F@EXCCR03.campus.ncl.ac.uk> References: <5E615268CEC26C4E920B9D9911A2307C0345ECC5B68B@EXCCR03.campus.ncl.ac.uk>, <4F7DF441.5040104@amd.com> <5E615268CEC26C4E920B9D9911A2307C0345ECC5B68C@EXCCR03.campus.ncl.ac.uk>, <4F7E004D.5090908@amd.com>, <5E615268CEC26C4E920B9D9911A2307C0345ECC5B68D@EXCCR03.campus.ncl.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5E615268CEC26C4E920B9D9911A2307C0345ECC5B68D@EXCCR03.campus.ncl.ac.uk> Content-Language: en-GB List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: "wei.huang2@amd.com" Cc: Andrew Cooper , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org ________________________________________ From: Francisco Rocha Sent: 05 April 2012 21:43 To: wei.huang2@amd.com Cc: Andrew Cooper; xen-devel@lists.xen.org Subject: RE: [Xen-devel] (no subject) ________________________________________ From: Wei Huang [wei.huang2@amd.com] Sent: 05 April 2012 21:27 To: Francisco Rocha Cc: Andrew Cooper; xen-devel@lists.xen.org Subject: Re: [Xen-devel] (no subject) On 04/05/2012 03:17 PM, Francisco Rocha wrote: > ________________________________________ > From: Wei Huang [wei.huang2@amd.com] > Sent: 05 April 2012 20:36 > To: Francisco Rocha > Cc: Andrew Cooper; xen-devel@lists.xen.org > Subject: Re: [Xen-devel] (no subject) > > On 04/05/2012 01:26 PM, Francisco Rocha wrote: >> Date: Thu, 5 Apr 2012 18:44:14 +0100 >> From: Andrew Cooper >> To: >> Subject: Re: [Xen-devel] lastest xen unstable crash >> Message-ID:<4F7DD9EE.3080404@citrix.com> >> Content-Type: text/plain; charset="ISO-8859-1" >> >> On 05/04/12 18:37, Francisco Rocha wrote: >>> Hi everyone, >>> >>> I was trying to build a new machine but the system keeps rebooting. >>> I used the lasted unstable version from xen-unstable.hg. >>> >>> I have tried with Fedora 16 (kernel 3.3.0-8) and Xubuntu 11.10 (3.0.0.17-generic). >>> >>> The output to my serial console is attached. >>> >>> Cheers, >>> Francisco >> What is your Linux command line? does it include "console=hvc0"? >> Perhaps some early_printk settings are required. >> >> Please include my email in your replies, thank you. >> >> Yes, it includes hvc0. I used your tutorial to setup the SOL. >> >> title Xen 3.4.2 / pv_ops Linux dom0 2.6.31.6 with a serial console >> root (hd0,0) >> kernel /xen-3.4.gz dom0_mem=512M loglvl=all guest_loglvl=all sync_console console_to_ring com1=115200,8n1,0xe000,0 console=com1 >> module /vmlinuz-2.6.31.6 ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen nomodeset >> module /initrd-2.6.31.6.img >> >> Something like this, I am not at the machine anymore. >> >> Francisco >> > It looks like xsave/xrstore instructions (xsetbv instruction in > xstate_enable() function to be exact) related. You can try to disable > xsave to to see if this helps. > > -Wei > > Sorry about the untitled message. > > Should I be the one disabling xsave or is that for Andrew to change something? > How can I do that? Xen-unstable supports xsave/xrstor. You are using kernel 3.x.x, which should support xsave/xrstor too. You can try to set xsave=0 in xen.gz line of grub entry and boot again. Something like this: kernel /boot/xen.gz blah blah xsave=0 module blah blah blah Oh, i see, it's some new functionality. I will try it tomorrow and then let you know how it goes. Thank you for the help. Francisco -Wei > > Anyway, shouldn't Xen support it? > > cheers, > Francisco The xsave=0 command line parameter solves the problem. Thank you, Francisco