Re: [Qemu-ppc] [SLOF] [PATCH v4] board-qemu: add private hcall to inform host on "phandle" update

[Mark Cave-Ayland]

On 27/09/17 10:30, Segher Boessenkool wrote:

> On Wed, Sep 27, 2017 at 04:15:43PM +1000, David Gibson wrote:
>> 2. At quiesce time, SLOF will linearize it's current version of the DT
>>    and submit it to H_UPDATE_DT
> 
> That will work.  It's a big hammer, but that also means it will solve
> many related future problems.  I like it :-)

Agreed, this should just about cover all circumstances I can think of.
I'm sure I've seen some more obscure OSs that don't call quiesce when
testing OpenBIOS, but given that this is new functionality and you can
update both SLOF and the client accordingly I don't think this will be
an issue.


ATB,

Mark.