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Re: [Qemu-devel] [Qemu-ppc] [PATCH 72/77] ppc: A couple more dummy POWER

From: Thomas Huth
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 72/77] ppc: A couple more dummy POWER8 Book4 regs
Date: Thu, 10 Mar 2016 19:01:09 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

On 09.03.2016 22:17, Thomas Huth wrote:
> On 09.03.2016 21:04, Cédric Le Goater wrote:
>> I have been maintaining a port of Ben's patchset on the latest qemu for 
>> other 
>> parts which should come after pnv is merged so I have a framework to test 
>> such 
>> sub-patchsets. I also have time to work on them but clearly not the expertise
>> in all areas !
> That would be great if you could take care of this!
>> What would be nice is to identify the most obvious ones, non controversial
>> that could be merged after a few iterations. I have a vague idea, the ones 
>> Reviewed-by David obviously being good candidates, the definition of new 
>> SPRs 
>> (even the dummy ones ?).
> I really like to see the KVM SPRs patches first - since they are fixing
> potential problems with migration of the _current_ KVM machines already!
> And being bug fixes, maybe these patches could even be included for QEMU
> 2.6 already? (i.e. before the hard freeze at the end of March)
> So my wish-list for a first small patch series looks like this:
> 5b287e66c7513209  ppc: Add macros to register hypervisor mode SPRs
> 34f1af75e75e7ba0  ppc: Add dummy CIABR SPR
> 48adf38e9cab4663  ppc: A couple more dummy POWER8 Book4 regs
> 730a9b4dc9414818  ppc: Add KVM numbers to some P8 SPRs
> There are a couple of other patches touching the SPRs initialization,
> but they are not important with regards to migration... so not sure
> whether it makes sense to include them now already...

FWIW, I just saw today (by doing some more experiments with
kvm-unit-tests) that the IAMR register is also not migrated yet ... so
it would be nice if you could include the related patches for IAMR, too,
and wire the KVM part up with KVM_REG_PPC_IAMR...


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