Re: [PATCH -V1 4/9] arch/powerpc: Use vsid and segment offset to represent virtual address

Benjamin Herrenschmidt [off-list ref] writes:

On Fri, 2012-06-29 at 19:47 +0530, Aneesh Kumar K.V wrote:

quoted

 
+/* 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