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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH -V1 4/9] arch/powerpc: Use vsid and segment offset to
 represent virtual address
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Date: Sun, 01 Jul 2012 13:23:07 +0530
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Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:

> On Fri, 2012-06-29 at 19:47 +0530, Aneesh Kumar K.V wrote:
>>  
>> +/* 78 bit power virtual address */
>>  struct virt_addr {
>> -       unsigned long addr;
>> +       unsigned long vsid;
>> +       unsigned long seg_off;
>>  };
>
> Do we really need to do that ? It's really nasty...
>
> We are trying to add only a few bits, we get 12 for free by just using a
> page number (4k based always, not PAGE_SHIFT based btw) no ? That should
> get us going for a while....
>

Ok, will update to vpn in the next iteration.

Thanks
-aneesh