linux-kernel - Re: Linux RDMA mini-conf at Plumbers 2018

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Date:   Sun, 23 Sep 2018 18:17:24 +0300
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Jason Gunthorpe <jgg@...lanox.com>, linux-rdma@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Alex Rosenbaum <alexr@...lanox.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Christian König <christian.koenig@....com>,
        Christoph Hellwig <hch@....de>,
        Christopher Lameter <cl@...ux.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Don Dutile <ddutile@...hat.com>,
        Doug Ledford <dledford@...hat.com>, Jan Kara <jack@...e.cz>,
        John Hubbard <jhubbard@...dia.com>,
        Jérôme Glisse <jglisse@...hat.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Matthew Wilcox <willy@...radead.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Noa Osherovich <noaos@...lanox.com>,
        Parav Pandit <parav@...lanox.com>,
        Stephen Bates <sbates@...thlin.com>,
        Joel Nider <joeln@...ibm.com>
Subject: Re: Linux RDMA mini-conf at Plumbers 2018

On Thu, Sep 20, 2018 at 09:54:28PM +0300, Leon Romanovsky wrote:
> On Thu, Sep 20, 2018 at 12:19:23PM -0600, Jason Gunthorpe wrote:
> > This is just a friendly reminder that registration deadlines are
> > approaching for this conference. Please see
> >
> > https://www.linuxplumbersconf.org/event/2/page/7-attend
> >
> > For details.
> >
> > This year we expect to have close to a day set aside for RDMA related
> > topics. Including up to half a day for the thorny general kernel issues
> > related to get_user_pages(), particularly as exasperated by RDMA.
> >
> > We have been working on the following concepts for sessions, I've
> > roughly marked names based on past participation in related email
> > threads. As we get closer to the conference date we will be organizing
> > leaders for each section based on these lists, please let us know of
> > any changes, or desire to be a leader!
> >
> > RDMA and get_user_pages
> > =======================
> >   Dan Williams <dan.j.williams@...el.com>
> >   Matthew Wilcox <willy@...radead.org>
> >   John Hubbard <jhubbard@...dia.com>
> >   Nicholas Piggin <npiggin@...il.com>
> >   Jan Kara <jack@...e.cz>
> >
> >  RDMA, DAX and persistant memory co-existence.
> >
> >  Explore the limits of what is possible without using On
> >  Demand Paging Memory Registration. Discuss 'shootdown'
> >  of userspace MRs
> >
> >  Dirtying pages obtained with get_user_pages() can oops ext4
> >  discuss open solutions.
> >
> > RDMA and PCI peer to peer
> > =========================
> >   Don Dutile <ddutile@...hat.com>
> >   Alex Williamson <alex.williamson@...hat.com>
> >   Christoph Hellwig <hch@....de>
> >   Stephen Bates <sbates@...thlin.com>
> >   Logan Gunthorpe <logang@...tatee.com>
> >   Jérôme Glisse <jglisse@...hat.com>
> >   Christian König <christian.koenig@....com>
> >   Bjorn Helgaas <bhelgaas@...gle.com>
> >
> >  RDMA and PCI peer to peer transactions. IOMMU issues. Integration
> >  with HMM. How to expose PCI BAR memory to userspace and other
> >  drivers as a DMA target.
> >
> > Improving testing of RDMA with syzkaller, RXE and Python
> > ========================================================
> >  Noa Osherovich <noaos@...lanox.com>
> >  Don Dutile <ddutile@...hat.com>
> >  Jason Gunthorpe <jgg@...lanox.com>
> >
> >  Problem solve RDMA's distinct lack of public tests.
> >  Provide a better framework for all drivers to test with,
> >  and a framework for basic testing in userspace.
> >
> >  Worst remaining unfixed syzkaller bugs and how to try to fix them
> >
> >  How to hook syzkaller more deeply into RDMA.
> >
> > IOCTL conversion and new kABI topics
> > ====================================
> >  Jason Gunthorpe <jgg@...lanox.com>
> >  Alex Rosenbaum <alexr@...lanox.com>
> >
> >  Attempt to close on the remaining tasks to complete the project
> >
> >  Restore fork() support to userspace
> >
> > Container and namespaces for RDMA topics
> > ========================================
> >  Parav Pandit <parav@...lanox.com>
> >  Doug Ledford <dledford@...hat.com>
> >
> >  Remaining sticky situations with containers
> >
> >  namespaces in sysfs and legacy all-namespace operation
> >
> >  Remaining CM issues
> >
> >  Security isolation problems
> >
> > Very large Contiguous regions in userspace
> > ==========================================
> >  Christopher Lameter <cl@...ux.com>
> >  Parav Pandit <parav@...lanox.com>
> >
> >  Poor performance of get_user_pages on very large virtual ranges
> >
> >  No standardized API to allocate regions to user space
> >
> >  Carry over from last year
> >
> > As we get closer to the conference date the exact schedule will be
> > published on the conference web site. I belive we have the Thursday
> > set aside right now.
> >
> > If there are any last minute topics people would like to see please
> > let us know.
> 
> I want to remind you that Mike wanted to bring the topic of enhancing
> remote page faults during post-copy container migration in CRIU over
> RDMA.
 
It's more Joel's topic, but thanks for the reminder anyway :)

> Thanks
> 
> >
> > See you all in Vancouver!
> >
> > Thanks,
> > Jason & Leon
> >

-- 
Sincerely yours,
Mike.