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xen-devel
Re: [Xen-devel] [patch]Add a new reboot method
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To: |
"Jan Beulich" <jbeulich@xxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [patch]Add a new reboot method |
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From: |
Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> |
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Date: |
Thu, 29 May 2008 12:49:14 +0100 |
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Cc: |
xen-devel@xxxxxxxxxxxxxxxxxxx, Huacai Chen <huacai.chen@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
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Thu, 29 May 2008 05:03:36 -0700 |
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<42DFA526FC41B1429CE7279EF83C6BDC01383B57@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20080529112645.7dfbd32e@core> <483EA803.76E4.0078.0@xxxxxxxxxx> |
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> to be affected: Linux post 2.6.22 (iirc) fails to reboot my Dell Precision
> 490 correctly, I have to force it to use the CF9 method. I tried looking
> into the changes that got made in that area, but wasn't able to (spend
> enough time to) pin-point the problem so far.
You might want to boot a 32bit kernel and try acpi=off, if that does the
trick then its (another) ACPI bug and the cf9 is red herring ?
> But I also agree to you and Keir that blindly writing to a port is no good
> idea. It should at least be assured that hardware supports this.
Which takes us back to ACPI. If 0xcf9 is the correct process the ACPI
method should use it.
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