Re: [dpdk-dev] [PATCH] eal/ppc: remove fix of memory barrier for IBM POWER

["Pradeep Satyanarayana" <pradeep@us.ibm.com>]

Pradeep Satyanarayana/Beaverton/IBM wrote on 03/27/2019 04:50:31 PM:

> From: Pradeep Satyanarayana/Beaverton/IBM
> To: Thomas Monjalon <thomas@monjalon.net>
> Cc: "bruce.richardson@intel.com" <bruce.richardson@intel.com>, Chao
> Zhu <chaozhu@linux.vnet.ibm.com>, Dekel Peled <dekelp@mellanox.com>,
> dev@dpdk.org, David Christensen <drc@ibm.com>,
> "honnappa.nagarahalli@arm.com" <honnappa.nagarahalli@arm.com>, Idan
> Werpoler <Idanw@mellanox.com>, "konstantin.ananyev@intel.com"
> <konstantin.ananyev@intel.com>, "ola.liljedahl@arm.com"
> <ola.liljedahl@arm.com>, Olga Shern <olgas@mellanox.com>, Ori Kam
> <orika@mellanox.com>, Shahaf Shuler <shahafs@mellanox.com>, David
> Wilder <wilder@us.ibm.com>, Yongseok Koh <yskoh@mellanox.com>
> Date: 03/27/2019 04:50 PM
> Subject: Re: [dpdk-dev] [PATCH] eal/ppc: remove fix of memory
> barrier for IBM POWER
>
> Thomas Monjalon <thomas@monjalon.net> wrote on 03/27/2019 02:19:03 AM:
>
> > From: Thomas Monjalon <thomas@monjalon.net>
> > To: "pradeep@us.ibm.com" <pradeep@us.ibm.com>, Chao Zhu
> > <chaozhu@linux.vnet.ibm.com>
> > Cc: dev@dpdk.org, Dekel Peled <dekelp@mellanox.com>, Shahaf Shuler
> > <shahafs@mellanox.com>, "bruce.richardson@intel.com"
> > <bruce.richardson@intel.com>, David Christensen <drc@ibm.com>,
> > "honnappa.nagarahalli@arm.com" <honnappa.nagarahalli@arm.com>,
> > "konstantin.ananyev@intel.com" <konstantin.ananyev@intel.com>,
> > "ola.liljedahl@arm.com" <ola.liljedahl@arm.com>, Ori Kam
> > <orika@mellanox.com>, David Wilder <wilder@us.ibm.com>, Yongseok Koh
> > <yskoh@mellanox.com>, Idan Werpoler <Idanw@mellanox.com>, Olga Shern
> > <olgas@mellanox.com>
> > Date: 03/27/2019 02:19 AM
> > Subject: Re: [dpdk-dev] [PATCH] eal/ppc: remove fix of memory
> > barrier for IBM POWER
> >
> > Pradeep, Chao,
> >
> > Do we have more news?
> > We must merge this patch for DPDK 19.05-rc1.
> >
> > I understand you want to try improving performance
> > by using lightweight sync for SMP barrier,
> > and this change can be done later.
> > First priority is to fix the bug of the general barrier.
> > That's why I should push this patch before the end of the week.

> Dekel's patch at:
>
> http://mails.dpdk.org/archives/dev/2019-March/126746.html
>
> seems to be holding up well with the testing done so far. We have
> also pulled that patch in to test with DTS. If all hold up well,
> we should be able to let you know by tomorrow morning (US west coast
time).

Thomas,

This is to confirm that the internal testing has completed and all the
tests
passed. So, yes, we can push that into 19.05-rc1.

We will have another patch out for the smp barriers as well. That is still
being tested.

We will also need to get these patches into 18.11 and higher releases. We
will work with others to get that done.

Thanks
Pradeep
pradeep@us.ibm.com