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List:       xen-ppc-devel
Subject:    Re: [XenPPC] Should the platform name be "Xen-Maple"
From:       Jimi Xenidis <jimix () watson ! ibm ! com>
Date:       2007-02-28 11:27:26
Message-ID: 278F74A9-54AB-4AA3-9CCC-A30C8ADE4FCC () watson ! ibm ! com
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ok, I am confused, and not sure I care until I see the patch that  
fives the result you want.
-JX
On Feb 27, 2007, at 5:19 PM, Hollis Blanchard wrote:

> "platform" is build-time and comes from define_machine(). That  
> should be
> "Xen".
>
> "machine" we can display ourselves via ppc_md.show_cpuinfo(). We  
> can get
> that from the device tree, just like CHRP does.
>
> On Tue, 2007-02-27 at 16:55 -0500, Jimi Xenidis wrote:
>> I agree, but in our current Kernel source the string in question
>> comes from the machine description.
>> Am I missing something?
>> -Jx
>> On Feb 27, 2007, at 3:43 PM, Hollis Blanchard wrote:
>>
>>> Jimi, the context is that we need to modify Fedora's installer so  
>>> that
>>> it properly detects the system it's running on. That means we're
>>> implementing a user-visible interface right now. I think "Xen-
>>> Maple" is
>>> a terrible name to permanently commit ourselves to. Let's not.
>>>
>>> PPC's cpuinfo seems to have a split between "platform" and
>>> "machine" (where machine is more specific). I think platform =  
>>> Xen is
>>> fine, and machine is the underlying machine.
>>>
>>> On Tue, 2007-02-27 at 14:56 -0500, Jimi Xenidis wrote:
>>>> This comes from the fact that we are running xen from an underlying
>>>> host platform.
>>>> for example, if you boot linux without xen but on SLOF your machine
>>>> name is "Maple".
>>>> see:
>>>>    arch/powerpc/platforms/xen/setup.c define_machine 246
>>>> define_machine(xen)
>>>>
>>>>
>>>> I'd be interested in changing this to "Xen" for DomUs, but Dom0
>>>> should reflect the underlying machine type that linux would use
>>>> without Xen.
>>>> -JX
>>>>
>>>>
>>>> On Feb 27, 2007, at 2:48 PM, Jerone Young wrote:
>>>>
>>>>> In /proc/cpuinfo of a domain0 you see the following:
>>>>>
>>>>>  processor       : 0
>>>>>  cpu             : PPC970MP, altivec supported
>>>>>  clock           : 2300.000000MHz
>>>>>  revision        : 1.1 (pvr 0044 0101)
>>>>>  processor       : 1
>>>>>  cpu             : PPC970MP, altivec supported
>>>>>  clock           : 2300.000000MHz
>>>>>  revision        : 1.1 (pvr 0044 0101)
>>>>>  processor       : 2
>>>>>  cpu             : PPC970MP, altivec supported
>>>>>  clock           : 2300.000000MHz
>>>>>  revision        : 1.1 (pvr 0044 0101)
>>>>>  processor       : 3
>>>>>  cpu             : PPC970MP, altivec supported
>>>>>  clock           : 2300.000000MHz
>>>>>  revision        : 1.1 (pvr 0044 0101)
>>>>>  timebase        : 14318378
>>>>>  platform        : Xen-Maple
>>>>>
>>>>> The "platform" line "Xen-Maple" is currently used by some tools in
>>>>> distros to identify the platform of the machine. The question I
>>>>> pose is
>>>>> should this be changed from "Xen-Maple" since running on Xen does
>>>>> not
>>>>> mean you are running on Maple.
>>>>>
>>>>> Something like "Xen" would probably be better. What do you guys
>>>>> think ?
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Xen-ppc-devel mailing list
>>>>> Xen-ppc-devel@lists.xensource.com
>>>>> http://lists.xensource.com/xen-ppc-devel
>>>>
>>>>
>>>> _______________________________________________
>>>> Xen-ppc-devel mailing list
>>>> Xen-ppc-devel@lists.xensource.com
>>>> http://lists.xensource.com/xen-ppc-devel
>>> -- 
>>> Hollis Blanchard
>>> IBM Linux Technology Center
>>>
>>
> -- 
> Hollis Blanchard
> IBM Linux Technology Center
>


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