linux-kernel - Re: [PATCH v2 11/20] kvm: rename pfn_t to kvm_pfn

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Date:	Mon, 12 Oct 2015 09:16:55 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...1.01.org>,
	Dave Hansen <dave@...1.net>,
	Russell King <linux@....linux.org.uk>,
	Linux MM <linux-mm@...ck.org>, Gleb Natapov <gleb@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Christoffer Dall <christoffer.dall@...aro.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	Christoph Hellwig <hch@....de>,
	Alexander Graf <agraf@...e.com>, KVM list <kvm@...r.kernel.org>
Subject: Re: [PATCH v2 11/20] kvm: rename pfn_t to kvm_pfn_t

On Mon, Oct 12, 2015 at 5:51 AM, Paolo Bonzini <pbonzini@...hat.com> wrote:
>
>
> On 10/10/2015 22:57, Dan Williams wrote:
>> On Sat, Oct 10, 2015 at 1:35 PM, Paolo Bonzini <pbonzini@...hat.com> wrote:
>>> On 10/10/2015 02:56, Dan Williams wrote:
>>>> The core has developed a need for a "pfn_t" type [1].  Move the existing
>>>> pfn_t in KVM to kvm_pfn_t [2].
>>>>
>>>> [1]: https://lists.01.org/pipermail/linux-nvdimm/2015-September/002199.html
>>>> [2]: https://lists.01.org/pipermail/linux-nvdimm/2015-September/002218.html
>>>
>>> Can you please change also the other types in include/linux/kvm_types.h?
>>
>> Hmm, all those seem kvm specific already.  I'd only prefix them with
>> kvm_ if they collided with a "core" type.
>
> But they are all related and the code becomes uglier if you only prefix
> one of them.  If you don't convert all of them, I will do it anyway as
> soon as this patch get in.

Ok.

> Since it touches a lot of KVM files, we should synchronize in order to
> avoid conflicts and gnashing of teeth.  What tree is this patch going
> in?  You could provide me a commit SHA1 for this patch (well, its
> definitive version) based on Linus's tree (so that I can merge it in my
> tree as well), or I could commit it and provide the SHA1 to the
> maintainer of said tree.

The kvm_pfn_t conversion is only needed if the new pfn_t
infrastructure moves forward, and at this point it still needs some
review feedback.

How about this, care to send conversion patches for the rest? ...based on:

    https://git.kernel.org/cgit/linux/kernel/git/djbw/nvdimm.git/log/?h=libnvdimm-pending

When/if the new pfn_t bits move forward I'll carry them in the same
pull request through the nvdimm.git tree.
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