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Re: [Qemu-devel] [RFC 2/2] KVM: add virtio-pmem driver


From: Dan Williams
Subject: Re: [Qemu-devel] [RFC 2/2] KVM: add virtio-pmem driver
Date: Fri, 20 Oct 2017 09:11:13 -0700

On Fri, Oct 20, 2017 at 9:06 AM, Christoph Hellwig <address@hidden> wrote:
> On Fri, Oct 20, 2017 at 08:05:09AM -0700, Dan Williams wrote:
>> Right, that's the same recommendation I gave.
>>
>>     https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg08404.html
>>
>> ...so maybe I'm misunderstanding your concern? It sounds like we're on
>> the same page.
>
> Yes, the above is exactly what I think we should do it.  And in many
> ways virtio seems overkill if we could just have a hypercall or doorbell
> page as the queueing infrastructure in virtio shouldn't really be
> needed.

Ah ok, yes, get rid of the virtio-pmem driver and just make
nvdimm_flush() do a hypercall based on region-type flag.



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