From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: paulus@samba.org, linuxppc-dev@lists.ozlabs.org, anton@samba.org
Subject: Re: [PATCH -V1 4/9] arch/powerpc: Use vsid and segment offset to represent virtual address
Date: Sun, 01 Jul 2012 13:23:07 +0530 [thread overview]
Message-ID: <87txxror30.fsf@skywalker.in.ibm.com> (raw)
In-Reply-To: <1341006336.2563.35.camel@pasglop>
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
next prev parent reply other threads:[~2012-07-01 7:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-29 14:17 [PATCH -V1 0/9] arch/powerpc: Add 64TB support to ppc64 Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 1/9] arch/powerpc: Use hpt_va to compute virtual address Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 2/9] arch/powerpc: Convert virtual address to a struct Aneesh Kumar K.V
2012-06-29 17:44 ` Cody P Schafer
2012-06-29 21:43 ` Benjamin Herrenschmidt
2012-06-29 14:17 ` [PATCH -V1 3/9] arch/powerpc: Simplify hpte_decode Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 4/9] arch/powerpc: Use vsid and segment offset to represent virtual address Aneesh Kumar K.V
2012-06-29 21:45 ` Benjamin Herrenschmidt
2012-07-01 7:53 ` Aneesh Kumar K.V [this message]
2012-06-29 14:17 ` [PATCH -V1 5/9] arch/powerpc: Make KERN_VIRT_SIZE not dependend on PGTABLE_RANGE Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 6/9] arch/powerpc: Increase the slice range to 64TB Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 7/9] arch/powerpc: Use 50 bits of VSID in slbmte Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 8/9] arch/powerpc: Use 32bit array for slb cache Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 9/9] arch/powerpc: Add 64TB support Aneesh Kumar K.V
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