Re: [PATCH 3/3] KVM: PPC: booke: Added debug handler

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On 08.08.2012, at 03:02, Bhushan Bharat-R65777 wrote:

> 
> 
>> -----Original Message-----
>> From: Wood Scott-B07421
>> Sent: Wednesday, August 08, 2012 2:15 AM
>> To: Alexander Graf
>> Cc: Bhushan Bharat-R65777; kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; Bhushan
>> Bharat-R65777
>> Subject: Re: [PATCH 3/3] KVM: PPC: booke: Added debug handler
>> 
>> On 08/07/2012 05:47 AM, Alexander Graf wrote:
>>>> diff --git a/arch/powerpc/kvm/booke_interrupts.S
>>>> b/arch/powerpc/kvm/booke_interrupts.S
>>>> index 3539805..890673c 100644
>>>> --- a/arch/powerpc/kvm/booke_interrupts.S
>>>> +++ b/arch/powerpc/kvm/booke_interrupts.S
>>>> @@ -73,6 +73,51 @@ _GLOBAL(kvmppc_handler_\ivor_nr)
>>>> 	bctr
>>>> .endm
>>>> 
>>>> +.macro KVM_DBG_HANDLER ivor_nr scratch srr0
>>> 
>>> This is a lot of asm code. Any chance to share a good share of it with the
>> generic handler?
>> 
>> That entire file could use an update to lok more like bookehv_interrupts.S and
>> its use of asm macros.
> 
> In booke there is assumption that size of KVM IVORs will not me more than host IVORs size so that only IVPR is changed. 
> 
> I tried to give it that shape of bookehv_interrupts.S  and found that size of some IVORs become more than host IVORs.

We can always jump off to another (more generic?) function and only have a small stub in the IVOR referenced code.


Alex

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