dom0/xen boot problem

dom0/xen boot problem

[Kay, Allen M]

Jeremy/Konrad,

Thanks for Stefano's help, dom0/xen boot failure on my Sandybridge desktop SDP has been isolated to the following patch that is missing in both 2.6.32 and 2.6.37 PVOPS branches.  According to PVOPS wiki 2.6.32 and 2.6.37 are suppose to be active branches.  Can you back port this patch to both 2.6.32 and 2.6.37 branches?

I'm surprised that I'm the only person encountering this problem.  Not being able use either printk or xen_raw_printk in xen_build_dynamic_phys_to_machine() does not help debugging either.  I was going to save max_pfn in a global variable and then print it out later in xen_build_mfn_list_list() before Stefano pointed out this patch. :-)

Allen

----- missing patch -------

commit cf04d120d9413de581437cf9a29f138ec1178f65
Author: Stefan Bader <stefan.bader@canonical.com>
Date:   Thu Jan 27 10:03:14 2011 -0500

    xen/p2m: Mark INVALID_P2M_ENTRY the mfn_list past max_pfn.
    
    In case the mfn_list does not have enough entries to fill
    a p2m page we do not want the entries from max_pfn up to
    the boundary to be filled with unknown values. Hence
    set them to INVALID_P2M_ENTRY.
    
    Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

----- active pvops branches from pvops wiki page -----

Current active branches are:

xen/stable-2.6.32.x - this is the long term maintained branch, tracking upstream kernel.org 2.6.32.x stable updates. This branch has Xen dom0 patches added. This is the recommended branch for most users. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/stable-2.6.32.x .
xen/next-2.6.32 - This is a branch for next 2.6.32 version and gets migrated to the stable branch once automatic tests have succeeded. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.32 .
xen/next-2.6.37 - this is the current development branch based on Linux 2.6.37. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.37 .

Re: dom0/xen boot problem

[Konrad Rzeszutek Wilk]

On Fri, Feb 25, 2011 at 11:22:24AM -0800, Kay, Allen M wrote:
> Jeremy/Konrad,
> 
> Thanks for Stefano's help, dom0/xen boot failure on my Sandybridge desktop SDP has been isolated to the following patch that is missing in both 2.6.32 and 2.6.37 PVOPS branches.  According to PVOPS wiki 2.6.32 and 2.6.37 are suppose to be active branches.  Can you back port this patch to both 2.6.32 and 2.6.37 branches?

I believe it is already in the Greg KH 2.6.37.x bug-fix branch. But ... we don't actually
have a 2.6.37.x development branch. We do have a 2.6.38 one - wherein the
patch is present.


Under 2.6.32.x.. Jeremy, I've stuck this patch and another in
for-2.6.32/bug-fixes. Could you pull it please?

> 
> I'm surprised that I'm the only person encountering this problem.  Not being able use either printk or xen_raw_printk in xen_build_dynamic_phys_to_machine() does not help debugging either.  I was going to save max_pfn in a global variable and then print it out later in xen_build_mfn_list_list() before Stefano pointed out this patch. :-)

Oh man, what a headache.
> 
> Allen
> 
> ----- missing patch -------
> 
> commit cf04d120d9413de581437cf9a29f138ec1178f65
> Author: Stefan Bader <stefan.bader@canonical.com>
> Date:   Thu Jan 27 10:03:14 2011 -0500
> 
>     xen/p2m: Mark INVALID_P2M_ENTRY the mfn_list past max_pfn.
>     
>     In case the mfn_list does not have enough entries to fill
>     a p2m page we do not want the entries from max_pfn up to
>     the boundary to be filled with unknown values. Hence
>     set them to INVALID_P2M_ENTRY.
>     
>     Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> 
> ----- active pvops branches from pvops wiki page -----
> 
> Current active branches are:
> 
> xen/stable-2.6.32.x - this is the long term maintained branch, tracking upstream kernel.org 2.6.32.x stable updates. This branch has Xen dom0 patches added. This is the recommended branch for most users. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/stable-2.6.32.x .
> xen/next-2.6.32 - This is a branch for next 2.6.32 version and gets migrated to the stable branch once automatic tests have succeeded. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.32 .
> xen/next-2.6.37 - this is the current development branch based on Linux 2.6.37. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.37 .

RE: dom0/xen boot problem

[Kay, Allen M]

[-- Attachment #1: Type: text/plain, Size: 3460 bytes --]

> I believe it is already in the Greg KH 2.6.37.x bug-fix branch. But ... we don't actually
> have a 2.6.37.x development branch. We do have a 2.6.38 one - wherein the
> patch is present.

I thought xen/next-2.6.37 branch under git://git.kernel.org/pub/scm/linux/kernel/git/jeremy.xen.git is the 2.6.37 development branch.

Is xen/next-2.6.38 under git://git.kernel.org/pub/scm/linux/kernel/git/jeremy.xen.git the development branch for 2.6.38?

Base on the attached email from you, that too also has missing bug fixes.  It sounds the best pvops tree to use is:

	git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git devel/next-2.6.38

I will give this a try.

-----Original Message-----
From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com] 
Sent: Friday, February 25, 2011 11:36 AM
To: Kay, Allen M; Jeremy Fitzhardinge
Cc: Stefano Stabellini; Keir Fraser; xen-devel@lists.xensource.com
Subject: Re: dom0/xen boot problem

On Fri, Feb 25, 2011 at 11:22:24AM -0800, Kay, Allen M wrote:
> Jeremy/Konrad,
> 
> Thanks for Stefano's help, dom0/xen boot failure on my Sandybridge desktop SDP has been isolated to the following patch that is missing in both 2.6.32 and 2.6.37 PVOPS branches.  According to PVOPS wiki 2.6.32 and 2.6.37 are suppose to be active branches.  Can you back port this patch to both 2.6.32 and 2.6.37 branches?

I believe it is already in the Greg KH 2.6.37.x bug-fix branch. But ... we don't actually
have a 2.6.37.x development branch. We do have a 2.6.38 one - wherein the
patch is present.


Under 2.6.32.x.. Jeremy, I've stuck this patch and another in
for-2.6.32/bug-fixes. Could you pull it please?

> 
> I'm surprised that I'm the only person encountering this problem.  Not being able use either printk or xen_raw_printk in xen_build_dynamic_phys_to_machine() does not help debugging either.  I was going to save max_pfn in a global variable and then print it out later in xen_build_mfn_list_list() before Stefano pointed out this patch. :-)

Oh man, what a headache.
> 
> Allen
> 
> ----- missing patch -------
> 
> commit cf04d120d9413de581437cf9a29f138ec1178f65
> Author: Stefan Bader <stefan.bader@canonical.com>
> Date:   Thu Jan 27 10:03:14 2011 -0500
> 
>     xen/p2m: Mark INVALID_P2M_ENTRY the mfn_list past max_pfn.
>     
>     In case the mfn_list does not have enough entries to fill
>     a p2m page we do not want the entries from max_pfn up to
>     the boundary to be filled with unknown values. Hence
>     set them to INVALID_P2M_ENTRY.
>     
>     Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> 
> ----- active pvops branches from pvops wiki page -----
> 
> Current active branches are:
> 
> xen/stable-2.6.32.x - this is the long term maintained branch, tracking upstream kernel.org 2.6.32.x stable updates. This branch has Xen dom0 patches added. This is the recommended branch for most users. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/stable-2.6.32.x .
> xen/next-2.6.32 - This is a branch for next 2.6.32 version and gets migrated to the stable branch once automatic tests have succeeded. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.32 .
> xen/next-2.6.37 - this is the current development branch based on Linux 2.6.37. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.37 .

[-- Attachment #2: Type: message/rfc822, Size: 5410 bytes --]

From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Rafal Wojtczuk <rafal@invisiblethingslab.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [Xen-devel] tip of jeremy/xen.git xen/next-2.6.38 fails to compile
Date: Thu, 24 Feb 2011 07:46:52 -0800
Message-ID: <20110224154652.GB6893@dumpdata.com>

On Thu, Feb 24, 2011 at 01:00:56PM +0100, Rafal Wojtczuk wrote:
> Hello,
> it looks like some patches are missing in the current xen/next-2.6.38. E.g.
> IRQF_FORCE_RESUME is used but not defined.

Brave soul :-)

For right now take my tree: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git devel/next-2.6.38

It has the dom0 + lots of patches (including the pciback and netback).

No blkback yet.

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

[-- Attachment #3: Type: text/plain, Size: 138 bytes --]

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http://lists.xensource.com/xen-devel

Re: RE: dom0/xen boot problem

[Konrad Rzeszutek Wilk]

On Fri, Feb 25, 2011 at 11:54:38AM -0800, Kay, Allen M wrote:
> > I believe it is already in the Greg KH 2.6.37.x bug-fix branch. But ... we don't actually
> > have a 2.6.37.x development branch. We do have a 2.6.38 one - wherein the
> > patch is present.
> 
> I thought xen/next-2.6.37 branch under git://git.kernel.org/pub/scm/linux/kernel/git/jeremy.xen.git is the 2.6.37 development branch.

We thought about it, but then 2.6.38 has so many neat stuff in it that it just seems easier to do it
on top of 2.6.38.

> 
> Is xen/next-2.6.38 under git://git.kernel.org/pub/scm/linux/kernel/git/jeremy.xen.git the development branch for 2.6.38?
> 
> Base on the attached email from you, that too also has missing bug fixes.  It sounds the best pvops tree to use is:
> 
> 	git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git devel/next-2.6.38

Or better, use git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git #master

(as it is the "stable" version). The devel/next-2.6.38 is a kitchensink right now.
> 
> I will give this a try.

Thank you!

> 
> -----Original Message-----
> From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com] 
> Sent: Friday, February 25, 2011 11:36 AM
> To: Kay, Allen M; Jeremy Fitzhardinge
> Cc: Stefano Stabellini; Keir Fraser; xen-devel@lists.xensource.com
> Subject: Re: dom0/xen boot problem
> 
> On Fri, Feb 25, 2011 at 11:22:24AM -0800, Kay, Allen M wrote:
> > Jeremy/Konrad,
> > 
> > Thanks for Stefano's help, dom0/xen boot failure on my Sandybridge desktop SDP has been isolated to the following patch that is missing in both 2.6.32 and 2.6.37 PVOPS branches.  According to PVOPS wiki 2.6.32 and 2.6.37 are suppose to be active branches.  Can you back port this patch to both 2.6.32 and 2.6.37 branches?
> 
> I believe it is already in the Greg KH 2.6.37.x bug-fix branch. But ... we don't actually
> have a 2.6.37.x development branch. We do have a 2.6.38 one - wherein the
> patch is present.
> 
> 
> Under 2.6.32.x.. Jeremy, I've stuck this patch and another in
> for-2.6.32/bug-fixes. Could you pull it please?
> 
> > 
> > I'm surprised that I'm the only person encountering this problem.  Not being able use either printk or xen_raw_printk in xen_build_dynamic_phys_to_machine() does not help debugging either.  I was going to save max_pfn in a global variable and then print it out later in xen_build_mfn_list_list() before Stefano pointed out this patch. :-)
> 
> Oh man, what a headache.
> > 
> > Allen
> > 
> > ----- missing patch -------
> > 
> > commit cf04d120d9413de581437cf9a29f138ec1178f65
> > Author: Stefan Bader <stefan.bader@canonical.com>
> > Date:   Thu Jan 27 10:03:14 2011 -0500
> > 
> >     xen/p2m: Mark INVALID_P2M_ENTRY the mfn_list past max_pfn.
> >     
> >     In case the mfn_list does not have enough entries to fill
> >     a p2m page we do not want the entries from max_pfn up to
> >     the boundary to be filled with unknown values. Hence
> >     set them to INVALID_P2M_ENTRY.
> >     
> >     Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> > 
> > ----- active pvops branches from pvops wiki page -----
> > 
> > Current active branches are:
> > 
> > xen/stable-2.6.32.x - this is the long term maintained branch, tracking upstream kernel.org 2.6.32.x stable updates. This branch has Xen dom0 patches added. This is the recommended branch for most users. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/stable-2.6.32.x .
> > xen/next-2.6.32 - This is a branch for next 2.6.32 version and gets migrated to the stable branch once automatic tests have succeeded. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.32 .
> > xen/next-2.6.37 - this is the current development branch based on Linux 2.6.37. Changelog: http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/next-2.6.37 .

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Subject: Re: [Xen-devel] tip of jeremy/xen.git xen/next-2.6.38 fails to compile
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> 
> On Thu, Feb 24, 2011 at 01:00:56PM +0100, Rafal Wojtczuk wrote:
> > Hello,
> > it looks like some patches are missing in the current xen/next-2.6.38. E.g.
> > IRQF_FORCE_RESUME is used but not defined.
> 
> Brave soul :-)
> 
> For right now take my tree: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git devel/next-2.6.38
> 
> It has the dom0 + lots of patches (including the pciback and netback).
> 
> No blkback yet.
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: dom0/xen boot problem

[Konrad Rzeszutek Wilk]

On Fri, Feb 25, 2011 at 11:22:24AM -0800, Kay, Allen M wrote:
> Jeremy/Konrad,
> 
> Thanks for Stefano's help, dom0/xen boot failure on my Sandybridge desktop SDP has been isolated to the following patch that is missing in both 2.6.32 and 2.6.37 PVOPS branches.  According to PVOPS wiki 2.6.32 and 2.6.37 are suppose to be active branches.  Can you back port this patch to both 2.6.32 and 2.6.37 branches?

So incidententaly.. Are you also using Xorg with the 2.6.37 (or 2.6.38?) on your Sandybridge SDP box? If so
what version of Xorg, libdrm, and libav?

I am curious whether you see this:

17.468595] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung                                             
[   17.471533] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 3 at 0, next 4)                        
[   17.998586] [drm:i915_reset] *ERROR* Failed to reset chip.     

RE: dom0/xen boot problem

[Kay, Allen M]

I'm accessing the system via VNC and have not been using X on the console.

My base OS is FC10 and here are the info you requested:

1) Xorg: 1.5.3 (according to /var/log/Xorg.0.log)
2) libdrm-2.4.0-0.21.x86_64 (according to rpm -qa)
3) I'm not able to figure out the version for libav. It is not listed in rpm -qa. What is the best way to figure out?

I'm not seeing i915 error messages below.  I only see two outputs for i915.  One for IRQ assignment and one for driver initialization.

My dom0 kernel is your mainline branch: 2.6.38-rc6+.

-----Original Message-----
From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com] 
Sent: Wednesday, March 02, 2011 1:25 PM
To: Kay, Allen M
Cc: Jeremy Fitzhardinge; xen-devel@lists.xensource.com; Keir Fraser; Stefano Stabellini
Subject: Re: [Xen-devel] dom0/xen boot problem

On Fri, Feb 25, 2011 at 11:22:24AM -0800, Kay, Allen M wrote:
> Jeremy/Konrad,
> 
> Thanks for Stefano's help, dom0/xen boot failure on my Sandybridge desktop SDP has been isolated to the following patch that is missing in both 2.6.32 and 2.6.37 PVOPS branches.  According to PVOPS wiki 2.6.32 and 2.6.37 are suppose to be active branches.  Can you back port this patch to both 2.6.32 and 2.6.37 branches?

So incidententaly.. Are you also using Xorg with the 2.6.37 (or 2.6.38?) on your Sandybridge SDP box? If so
what version of Xorg, libdrm, and libav?

I am curious whether you see this:

17.468595] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung                                             
[   17.471533] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 3 at 0, next 4)                        
[   17.998586] [drm:i915_reset] *ERROR* Failed to reset chip.     

Re: dom0/xen boot problem

[Konrad Rzeszutek Wilk]

On Wed, Mar 02, 2011 at 02:07:08PM -0800, Kay, Allen M wrote:
> I'm accessing the system via VNC and have not been using X on the console.

What happens if you attach a monitor to it? Does it work?
> 
> My base OS is FC10 and here are the info you requested:

Ancient :-) 
> 
> 1) Xorg: 1.5.3 (according to /var/log/Xorg.0.log)
> 2) libdrm-2.4.0-0.21.x86_64 (according to rpm -qa)
> 3) I'm not able to figure out the version for libav. It is not listed in rpm -qa. What is the best way to figure out?

It wouldn't be used by that version of Xorg. I believe 1.9 or later would
end up using it (so Fedora 14 or Ubuntu 11.04)
> 
> I'm not seeing i915 error messages below.  I only see two outputs for i915.  One for IRQ assignment and one for driver initialization.
> 
> My dom0 kernel is your mainline branch: 2.6.38-rc6+.

<nods> OK.