Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-18 Thread Soren Hansen
On Fri, Jan 18, 2008 at 12:43:51AM +0200, Dor Laor wrote:
  I was under the impression that the kernel API should be backwards
  compatible, so I consider this a bug. Is there anything I can do to
  help debug this issue?

It's a bit odd. I was certain that I had had it running with the modules
from an older kernel version, but at least now I can't seem to find any
version that makes it work.


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Soren Hansen
Ubuntu Server Team
http://www.ubuntu.com/


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Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-18 Thread Amit Shah
On Friday 18 January 2008 13:34:20 Soren Hansen wrote:
 On Fri, Jan 18, 2008 at 12:43:51AM +0200, Dor Laor wrote:
   I was under the impression that the kernel API should be backwards
   compatible, so I consider this a bug. Is there anything I can do to
   help debug this issue?

 It's a bit odd. I was certain that I had had it running with the modules
 from an older kernel version, but at least now I can't seem to find any
 version that makes it work.

You previously mentioned older modules didn't work, but modules from kvm-git 
worked. So now does even kvm-git not work? Is it the same kvm-git you tried 
earlier, or a new update?

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Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-18 Thread Soren Hansen
On Fri, Jan 18, 2008 at 02:38:03PM +0530, Amit Shah wrote:
 I was under the impression that the kernel API should be backwards
 compatible, so I consider this a bug. Is there anything I can do to
 help debug this issue?
 It's a bit odd. I was certain that I had had it running with the
 modules from an older kernel version, but at least now I can't seem
 to find any version that makes it work.
 You previously mentioned older modules didn't work, but modules from
 kvm-git worked. So now does even kvm-git not work?

kvm-git works just fine. I meant that I couldn't find any version
shipped with our kernel images that works as expected.

I'll try to be more clear in the future. Sorry :)

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Soren Hansen
Ubuntu Server Team
http://www.ubuntu.com/


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Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-18 Thread Amit Shah
On Friday 18 January 2008 14:44:42 Soren Hansen wrote:
 On Fri, Jan 18, 2008 at 02:38:03PM +0530, Amit Shah wrote:
  I was under the impression that the kernel API should be backwards
  compatible, so I consider this a bug. Is there anything I can do to
  help debug this issue?
 
  It's a bit odd. I was certain that I had had it running with the
  modules from an older kernel version, but at least now I can't seem
  to find any version that makes it work.
 
  You previously mentioned older modules didn't work, but modules from
  kvm-git worked. So now does even kvm-git not work?

 kvm-git works just fine. I meant that I couldn't find any version
 shipped with our kernel images that works as expected.

Hmm; does userspace from kvm-58 work fine with those modules? Any chance you 
could bisect userspace to find out which userspace make those modules work?

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Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-17 Thread Dor Laor

On Thu, 2008-01-17 at 18:20 +0100, Soren Hansen wrote:
 Hi!
 
 I'm having an issue with GFXboot in Ubuntu. If I try to boot one of our
 recent iso images, e.g.
 
   http://cdimage.ubuntu.com/ubuntu-server/daily/current/hardy-server-amd64.iso
 
 with a simple kvm -cdrom hardy-server-amd64 using the kernel modules
 from 2.6.24-rc6, and kvm-userspace from git, I just get a black screen.
 If I add -std-vga to the command line, it works just fine. If I load the
 kernel modules from git, it also works just fine.
 
 I was under the impression that the kernel API should be backwards
 compatible, so I consider this a bug. Is there anything I can do to help
 debug this issue?
 

Indeed it's a bug and not different api.
It might be SVM fpu state leak. Bisecting the kernel can help.
Does it runs on Intel?
Dor


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Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-17 Thread Soren Hansen
On Fri, Jan 18, 2008 at 12:43:51AM +0200, Dor Laor wrote:
  I'm having an issue with GFXboot in Ubuntu. If I try to boot one of
  our recent iso images, e.g.
  

  http://cdimage.ubuntu.com/ubuntu-server/daily/current/hardy-server-amd64.iso
  
  with a simple kvm -cdrom hardy-server-amd64 using the kernel modules
  from 2.6.24-rc6, and kvm-userspace from git, I just get a black screen.
  If I add -std-vga to the command line, it works just fine. If I load the
  kernel modules from git, it also works just fine.
  
  I was under the impression that the kernel API should be backwards
  compatible, so I consider this a bug. Is there anything I can do to help
  debug this issue?
 Indeed it's a bug and not different api.  It might be SVM fpu state
 leak. Bisecting the kernel can help.  Does it runs on Intel?  Dor

Ah, sorry, I should of course have mentioned that I'm using kvm-intel.

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Ubuntu Server Team
http://www.ubuntu.com/


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Re: [kvm-devel] GFXboot, Ubuntu and kvm git

2008-01-17 Thread Amit Shah
On Friday 18 January 2008 04:13:51 Dor Laor wrote:
 On Thu, 2008-01-17 at 18:20 +0100, Soren Hansen wrote:
  Hi!
 
  I'm having an issue with GFXboot in Ubuntu. If I try to boot one of our
  recent iso images, e.g.
 
   
  http://cdimage.ubuntu.com/ubuntu-server/daily/current/hardy-server-amd64.
 iso
 
  with a simple kvm -cdrom hardy-server-amd64 using the kernel modules
  from 2.6.24-rc6, and kvm-userspace from git, I just get a black screen.
  If I add -std-vga to the command line, it works just fine. If I load the
  kernel modules from git, it also works just fine.
 
  I was under the impression that the kernel API should be backwards
  compatible, so I consider this a bug. Is there anything I can do to help
  debug this issue?

 Indeed it's a bug and not different api.
 It might be SVM fpu state leak. Bisecting the kernel can help.

That's specific to the way Vista does things.

 Does it runs on Intel?
 Dor

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