linux-kernel - RE: [RESEND PATCH v3 kernel 3/7] mm: add a function to get the max pfn

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Date:   Tue, 25 Oct 2016 01:24:47 +0000
From:   "Li, Liang Z" <liang.z.li@...el.com>
To:     "Hansen, Dave" <dave.hansen@...el.com>,
        "mst@...hat.com" <mst@...hat.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "qemu-devel@...gnu.org" <qemu-devel@...gnu.org>,
        "quintela@...hat.com" <quintela@...hat.com>,
        "dgilbert@...hat.com" <dgilbert@...hat.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "cornelia.huck@...ibm.com" <cornelia.huck@...ibm.com>,
        "amit.shah@...hat.com" <amit.shah@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...hsingularity.net>
Subject: RE: [RESEND PATCH v3 kernel 3/7] mm: add a function to get the max
 pfn

> On 10/20/2016 11:24 PM, Liang Li wrote:
> > Expose the function to get the max pfn, so it can be used in the
> > virtio-balloon device driver. Simply include the 'linux/bootmem.h'
> > is not enough, if the device driver is built to a module, directly
> > refer the max_pfn lead to build failed.
> 
> I'm not sure the rest of the set is worth reviewing.  I think a lot of it will
> change pretty fundamentally once you have those improved data structures
> in place.

That's true. I will send out the v4 as soon as possible.

Liang