linux-kernel - Re: [RFC 2/2] KVM: add virtio-pmem driver

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Date:   Thu, 12 Oct 2017 19:07:27 -0400 (EDT)
From:   Pankaj Gupta <pagupta@...hat.com>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
        KVM list <kvm@...r.kernel.org>,
        Qemu Developers <qemu-devel@...gnu.org>,
        linux-nvdimm <linux-nvdimm@...1.01.org>,
        Linux MM <linux-mm@...ck.org>, Jan Kara <jack@...e.cz>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Haozhong Zhang <haozhong.zhang@...el.com>,
        Nitesh Narayan Lal <nilal@...hat.com>,
        Kevin Wolf <kwolf@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Ross Zwisler <ross.zwisler@...el.com>,
        David Hildenbrand <david@...hat.com>,
        Xiao Guangrong <xiaoguangrong.eric@...il.com>
Subject: Re: [RFC 2/2] KVM: add virtio-pmem driver


> > Dan,
> >
> > I have a query regarding below patch [*]. My assumption is its halted
> > because of memory hotplug restructuring work? Anything I am missing
> > here?
> >
> > [*] https://www.mail-archive.com/linux-nvdimm@lists.01.org/msg02978.html
> 
> It's fallen to the back of my queue since the original driving need of
> platform firmware changing offsets from boot-to-boot is no longer an
> issue. However, it does mean that you need to arrange for 128MB
> aligned devm_memremap_pages() ranges for the foreseeable future.

o.k I will provide 128MB aligned pages to devm_memremap_pages() function.

Thanks,
Pankaj