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[Xen-devel] Re: Xen 4.1 PVOPS 3.0.0-RC1 VGA Console

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Subject: [Xen-devel] Re: Xen 4.1 PVOPS 3.0.0-RC1 VGA Console
From: Sven Köhler <sven.koehler@xxxxxxxxx>
Date: Sat, 04 Jun 2011 15:01:34 +0200
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Am 04.06.2011 14:32, schrieb mike.a.collins:
> On Sat, 04 Jun 2011 12:55:57 +0200, Sven Köhler
>  <sven.koehler@xxxxxxxxx> wrote:
>> Am 04.06.2011 06:41, schrieb mike.a.collins:
>>> I've noticed that the VGA console is still not fixed in the 3.0.0 kernel
>>> when booting with xen dom0.  Is there a patch like with 2.6.39?  I could
>>> probably take what I used with the 2.6.39, but I was wondering if there
>>> was a reason for not including it.  Thanks.
>> What have you been using for 2.6.39?
>> Also, I'd love to hear an explanation why it is necessary, or what I
>> have to look out for on the mailing list or the LKML in order to follow
>> the progress with regard to this issue.
>  From what I've been able to gather there has been a change in the way
>  that Xen handles the host's hardware, in particular the console
>  hardware.  It was not sending that to the bootloader correctly, or at
>  all, and so the kernel didn't see that there was a console.  That is
>  what I can tell, just my uninformed opinion.  Konrad has a patch that
>  fixes the way that Xen reports the console hardware to the kernel, but
>  it looks as if it didn't make it into the 3.0-rc1 release.  I just
>  went to git.kernel.org and pulled up Konrad's xen repository and
>  selected the stable/2.6.39.x and looked for the commit entitled "xen:
>  allow enable use of VGA console on dom0" which was on May 31st.  I
>  clicked on the commitdiff page and then downloaded the patch from the
>  link at the top of the generated page.  I used that patch to enable
>  the VGA console on my dom0, worked like a champ, but I don't know if
>  there is an issue that kept it from being commited in the mainline.  I
>  hope this helped.

Thank you for your insight.

I think, this is the commit you're talking about:

I will try to apply it to 3.0-rc1. If successful, I'll talk to Pasi in
order to change the Wiki page.


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