Re: [PATCH] kvm/ppc/booke64: fix build breakage from Altivec, and disable e6500

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Am 10.05.2013 um 20:51 schrieb Caraman Mihai Claudiu-B02008 <B02008@xxxxxxxxxxxxx>:

>> -----Original Message-----
>> From: Alexander Graf [mailto:agraf@xxxxxxx]
>> Sent: Friday, May 10, 2013 9:23 PM
>> To: Wood Scott-B07421
>> Cc: Caraman Mihai Claudiu-B02008; Wood Scott-B07421; kvm-
>> ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx
>> Subject: Re: [PATCH] kvm/ppc/booke64: fix build breakage from Altivec,
>> and disable e6500
>> 
>> 
>> On 10.05.2013, at 20:06, Scott Wood wrote:
>> 
>>> On 05/10/2013 01:03:27 PM, Caraman Mihai Claudiu-B02008 wrote:
>>>>> -----Original Message-----
>>>>> From: kvm-ppc-owner@xxxxxxxxxxxxxxx [mailto:kvm-ppc-
>>>>> owner@xxxxxxxxxxxxxxx] On Behalf Of Alexander Graf
>>>>> Sent: Friday, May 10, 2013 7:51 PM
>>>>> To: Caraman Mihai Claudiu-B02008
>>>>> Cc: Wood Scott-B07421; kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx
>>>>> Subject: Re: [PATCH] kvm/ppc/booke64: fix build breakage from
>> Altivec,
>>>>> and disable e6500
>>>>> 
>>>>> 
>>>>> On 10.05.2013, at 18:50, Caraman Mihai Claudiu-B02008 wrote:
>>>>> 
>>>>>>>> Do we really need to remove e6500 all together for this?
>>>>>>> 
>>>>>>> No, just send real Altivec support quickly. We can add it to 3.10
>>>>> through
>>>>>>> stable if it's too later, but I'd prefer to have it in within the
>> rc
>>>>>>> phase.
>>>>>> 
>>>>>> I should have it by Monday, the smoke tests passed.
>>>>> 
>>>>> Please make sure it also works on 32bit :)
>>>> I can make sure that it doesn't break 32-bit. Altivec is not present
>> in
>>>> e500v2/e500mc/e5500 cores and e6500 is supported only by 64-bit host.
>> Are
>>>> you looking for G4 support?
>>> 
>>> Just because Altivec isn't present on 32-bit doesn't mean that a
>> particular patch can't break things there.  Just as a patch to deal with
>> lazy ee issues can break 32-bit, even though 32-bit doesn't have lazy ee.
>> :-)
>> 
>> Yeah, that's what I was referring to :). G4s  use a different code path
>> altogether and already work with Altivec for years.
> 
> Huh ... I forgot that G4 in handled under Book3S, not so obvious.
> 
>> I doubt you'll manage to break anything there :).
> 
> If you have stated breaks instead of works would have been more clear where
> you were heading :-J

Ok, next time I'll make it more obvious :).

Alex

> 
> -Mike
> 
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