Re: [Qemu-devel] [PATCH v7 0/4] rng-builtin: add an RNG backend that uses qemu_guest_getrandom()

[Laurent Vivier]

On 05/06/2019 15:05, Markus Armbruster wrote:
> Laurent Vivier <address@hidden> writes:
> 
>> Add a new RNG backend using QEMU builtin getrandom function.
>>
>> v7: rebase on master
>>     Make rng-builtin asynchronous with QEMUBH (removed existing R-b)
> 
> Pardon the ignorant question: why is that necessary?
> 

Because request_entropy() function is called while the request is not in
the requests queue, so the loop on !QSIMPLEQ_EMPTY(&s->parent.requests)
doens't process it. The request is added just after the call.

thanks,
Laurent