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Re: [Qemu-ppc] [PATCH v8 4/4] sPAPR: Implement sPAPRPHBClass::eeh_handle

From: Alexey Kardashevskiy
Subject: Re: [Qemu-ppc] [PATCH v8 4/4] sPAPR: Implement sPAPRPHBClass::eeh_handler
Date: Thu, 05 Jun 2014 23:13:15 +1000
User-agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

On 06/05/2014 11:00 PM, Alexander Graf wrote:
> On 05.06.14 08:53, Gavin Shan wrote:
>> The patch implements sPAPRPHBClass::eeh_handler so that the
>> EEH RTAS requests can be routed to VFIO for further handling.
>> Signed-off-by: Gavin Shan <address@hidden>
> Just to make sure I grasp this correctly.
> We have PHBs that are VFIO PHBs and PHBs that are emulation PHBs. Emulation
> PHBs can only have emulated devices attached. VFIO PHBs can only have a
> single IOMMU group's devices attached each. A container can not span 2
> different VFIO PHBs.
> Is this correct? 

Yes, this is correct. PHBs are too cheap on SPAPR to think of any
additional complication here :)

> If not the code below needs to take care of any
> abstraction we have in between and maybe limit scope a bit to make sure the
> guest doesn't kill devices on other PHBs :).


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