Re: [Xen-devel] [PATCH v3 1/1] xen: move TLB-flush filtering out into populate_physmap during vm creation

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 09/09/16 08:56, Jan Beulich wrote:
>>>> On 09.09.16 at 07:37, <dongli.zhang@xxxxxxxxxx> wrote:
>>>> Did you go through and check that there is nothing this information
>>>> can already get derived from? I can't immediately point you at
>>>> anything, but it feels like there should. 
>>>>
>>> Indeed. And if there isn't and we need to do add our own flagging,
>>> isn't there a better way and place where to put it (e.g., what Juergen
>>> and Andrew are hinting at)?
>> I prefer that to derive whether guest boot finishes is neither limited to a
>> specific domain type (pv, hvm, pvhvm or pvh) nor a specific arch (i386, 
>> x86_64,
>> arm32, arm64 or more in the future). Ideally, I would have one or a combo of
>> fields belong to "struct domain" but there isn't.
> Of course.
>
>> Can we use the field in vcpu[0]?
> I don't think so: What if another vCPU was scheduled to run first?

Use the XEN_DOMCTL_unpausedomain hypercall.  It must be called by
toolstacks on all architectures to complete domain construction.

~Andrew

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