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Re: [Xen-devel] Re: boot failure with 2.6.27(XCI) git

To: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: boot failure with 2.6.27(XCI) git
From: Dulloor <dulloor@xxxxxxxxx>
Date: Fri, 5 Jun 2009 03:54:17 -0400
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Jean Guyader <jean.guyader@xxxxxxxxx>
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Then, I guess you misread my question. Here it is again ...

* non-patched git : This is what I tried. There is no xen Dom0 option. There are other xen config options (CONFIG_XEN=y, ... ) that one would expect in a xen dom0. So, I thought it is xenified like 2.6.18-xen. With this kernel, the display blanks out after a few XEN printks. Is this kernel supposed to work ? I suspect it could be some console-init stuff, if it was supposed to work.

* patched git : There is an option for xen privileged domain. Options look like in pvops. WIth the patches applied (got applied correctly), compilation fails. At a cursory glance, patches seem to assume CONFIG_NUMA to be set. From Keir's mail, I guess we should not need the patchqueue.

-dulloor

On Fri, Jun 5, 2009 at 3:15 AM, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:
Run "make menuconfig" after non patched checkout
and make sure there is no option for Xen Privileged Domain
to be enabled. Seems just like vanilla.
Keir doesn't want XCI-specific bits, that's my understanding.


Boris.

--- On Fri, 6/5/09, Dulloor <dulloor@xxxxxxxxx> wrote:

From: Dulloor <dulloor@xxxxxxxxx>
Subject: [Xen-devel] Re: boot failure with 2.6.27(XCI) git
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Jean Guyader" <jean.guyader@xxxxxxxxx>
Date: Friday, June 5, 2009, 3:02 AM


I am using "http://xenbits.xen.org/git-http/xenclient/linux-2.6.27.git". I thought its xenified like 2.6.18. The XCI patchqueue does show more config options(very similar to pvops though), which I am compiling with now.

But, then I don't get the drift of Keir's comment in the other thread :

" The patchqueue is the XCI-specific bits, right? We'd just have a plain
  non-patchqueued got tree for mainline development at least, I think."

Maybe I am missing something. What exactly is this 2.6.27 git ? Is it a forward port of 2.6.18.8-xen or some relative of pvops ? From the code structure, it looks similar to pvops.

-dulloor


On Fri, Jun 5, 2009 at 2:29 AM, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:
Not patched branch 2.6.27 git won't give xenified kernel.
Check "make menuconfig"
As far as i understand XCI queue would give an  option Xen Dom0 support, but it seems to contain some XCI stuff not needed for regular
xenified kernel.

Boris

--- On Fri, 6/5/09, Dulloor <dulloor@xxxxxxxxx> wrote:

From: Dulloor <dulloor@xxxxxxxxx>
Subject: boot failure with 2.6.27(XCI) git
To: "Jean Guyader" <jean.guyader@xxxxxxxxx>
Cc: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Friday, June 5, 2009, 2:11 AM


I am using a simple (default config) linux-2.6.27, without XCI patch-queues. The display just blanks out during xen boot. I have a core2-duo machine. And, I am able to boot fine with both pvops and 2.6.18 kernels on this machine. I wish I could give more info, but I have none !

It is important for me to move my development environment to 2.6.27, given the platforms we use.
If there are any suggestions on howto go about debugging this, let know. Does xen support remote serial debugging ? If yes, how to enable it ?

-dulloor

PS : I have attached the config file, just in case



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