Re: [dpdk-dev] Why IVSHMEM was removed since 16.11 ?

2017-08-08 Thread Burakov, Anatoly 
> From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Furong
> Sent: Tuesday, August 8, 2017 8:26 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] Why IVSHMEM was removed since 16.11 ?
> 
> The release notes of dpdk-16.11 had shown that IVSHMEM was removed
> due to some design issues.
> 
> So, what are these issues?
> 
> Thanks!
> 

Hi Furong,

There were multiple issues involved. Biggest of all, it required a patch to 
QEMU that wasn't maintained and wasn't upstream (i.e. vanilla QEMU didn't work 
with DPDK's implementation of IVSHMEM support). Second, it was basically hacked 
in to EAL in order to support what it does [1], and the engineering effort to 
fix all of that isn't worth the benefit it would provide, as no one appeared to 
be using it heavily enough to object to its deprecation.

Hope this clears things up.

[1] http://dpdk.org/ml/archives/dev/2016-June/040844.html

Thanks,
Anatoly

[dpdk-dev] Why IVSHMEM was removed since 16.11 ?

2017-08-08 Thread Furong 
The release notes of dpdk-16.11 had shown that IVSHMEM was removed due 
to some design issues.


So, what are these issues?

Thanks!