linux-kernel - Re: [PATCH v4 0/1] Use HMM for ODP v4

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Message-ID: <20190522235737.GD15389@ziepe.ca>
Date:   Wed, 22 May 2019 20:57:37 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Jerome Glisse <jglisse@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        Leon Romanovsky <leonro@...lanox.com>,
        Doug Ledford <dledford@...hat.com>,
        Artemy Kovalyov <artemyko@...lanox.com>,
        Moni Shoua <monis@...lanox.com>,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Kaike Wan <kaike.wan@...el.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>
Subject: Re: [PATCH v4 0/1] Use HMM for ODP v4

On Wed, May 22, 2019 at 01:48:52PM -0400, Jerome Glisse wrote:

> > > So attached is a rebase on top of 5.2-rc1, i have tested with pingpong
> > > (prefetch and not and different sizes). Seems to work ok.
> > 
> > Urk, it already doesn't apply to the rdma tree :(
> > 
> > The conflicts are a little more extensive than I'd prefer to handle..
> > Can I ask you to rebase it on top of this branch please:
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/log/?h=wip/jgg-for-next
> > 
> > Specifically it conflicts with this patch:
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?h=wip/jgg-for-next&id=d2183c6f1958e6b6dfdde279f4cee04280710e34

There is at least one more serious blocker here:

config ARCH_HAS_HMM_MIRROR
        bool
        default y
        depends on (X86_64 || PPC64)
        depends on MMU && 64BIT

I can't loose ARM64 support for ODP by merging this, that is too
serious of a regression.

Can you fix it?

Thanks,
Jason