From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Miller <davem@davemloft.net>
Cc: npiggin@suse.de, jeremy@goop.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, hugh@veritas.com
Subject: Re: PTE access rules & abstraction
Date: Tue, 23 Sep 2008 15:35:06 +1000 [thread overview]
Message-ID: <1222148106.12085.95.camel@pasglop> (raw)
In-Reply-To: <20080922.201610.246167553.davem@davemloft.net>
On Mon, 2008-09-22 at 20:16 -0700, David Miller wrote:
>
> To a certain extent this is what BSD does in it's pmap layer, except
> that they don't have the page table datastructure abstraction like
> Linus does in the generic code, and which I think was a smart design
> decision on our side.
>
> All of the pmap modules in BSD are pretty big and duplicate a lot of
> code that arch's don't have to be mindful about under Linux.
I definitely agree, I don't think we want to go away from the page table
as being the abstraction :-) But I'm wondering if we can do a little bit
better with the accessors to those page tables.
BTW. am I the only one to have got one copy of David's reply (that I'm
quoting) coming with a From: Nick Piggin in the headers ? (apparently
coming from kvack).
Cheers,
Ben.
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Miller <davem@davemloft.net>
Cc: npiggin@suse.de, jeremy@goop.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, hugh@veritas.com
Subject: Re: PTE access rules & abstraction
Date: Tue, 23 Sep 2008 15:35:06 +1000 [thread overview]
Message-ID: <1222148106.12085.95.camel@pasglop> (raw)
In-Reply-To: <20080922.201610.246167553.davem@davemloft.net>
On Mon, 2008-09-22 at 20:16 -0700, David Miller wrote:
>
> To a certain extent this is what BSD does in it's pmap layer, except
> that they don't have the page table datastructure abstraction like
> Linus does in the generic code, and which I think was a smart design
> decision on our side.
>
> All of the pmap modules in BSD are pretty big and duplicate a lot of
> code that arch's don't have to be mindful about under Linux.
I definitely agree, I don't think we want to go away from the page table
as being the abstraction :-) But I'm wondering if we can do a little bit
better with the accessors to those page tables.
BTW. am I the only one to have got one copy of David's reply (that I'm
quoting) coming with a From: Nick Piggin in the headers ? (apparently
coming from kvack).
Cheers,
Ben.
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next prev parent reply other threads:[~2008-09-23 5:36 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-19 17:42 PTE access rules & abstraction Benjamin Herrenschmidt
2008-09-19 17:42 ` Benjamin Herrenschmidt
2008-09-22 6:22 ` Jeremy Fitzhardinge
2008-09-22 6:22 ` Jeremy Fitzhardinge
2008-09-22 21:05 ` Benjamin Herrenschmidt
2008-09-22 21:05 ` Benjamin Herrenschmidt
2008-09-23 3:10 ` Nick Piggin
2008-09-23 3:10 ` Nick Piggin
2008-09-23 3:16 ` David Miller
2008-09-23 3:16 ` David Miller, Nick Piggin
2008-09-23 5:35 ` Benjamin Herrenschmidt [this message]
2008-09-23 5:35 ` Benjamin Herrenschmidt
2008-09-23 6:18 ` Nick Piggin
2008-09-23 6:18 ` Nick Piggin
2008-09-23 5:31 ` Benjamin Herrenschmidt
2008-09-23 5:31 ` Benjamin Herrenschmidt
2008-09-23 6:13 ` Jeremy Fitzhardinge
2008-09-23 6:13 ` Jeremy Fitzhardinge
2008-09-23 6:49 ` Benjamin Herrenschmidt
2008-09-23 6:49 ` Benjamin Herrenschmidt
2008-09-23 9:50 ` Nick Piggin
2008-09-23 9:50 ` Nick Piggin
2008-09-23 11:54 ` peter
2008-09-23 11:54 ` peter
2008-09-24 18:45 ` Hugh Dickins
2008-09-24 18:45 ` Hugh Dickins
2008-09-24 21:20 ` Benjamin Herrenschmidt
2008-09-24 21:20 ` Benjamin Herrenschmidt
2008-09-24 21:57 ` Jeremy Fitzhardinge
2008-09-24 21:57 ` Jeremy Fitzhardinge
2008-09-24 22:07 ` Benjamin Herrenschmidt
2008-09-24 22:07 ` Benjamin Herrenschmidt
2008-09-24 22:43 ` Jeremy Fitzhardinge
2008-09-24 22:43 ` Jeremy Fitzhardinge
2008-09-24 22:53 ` Benjamin Herrenschmidt
2008-09-24 22:53 ` Benjamin Herrenschmidt
2008-09-24 23:55 ` Hugh Dickins
2008-09-24 23:55 ` Hugh Dickins
2008-09-25 1:04 ` Benjamin Herrenschmidt
2008-09-25 1:04 ` Benjamin Herrenschmidt
2008-09-25 18:15 ` Jeremy Fitzhardinge
2008-09-25 18:15 ` Jeremy Fitzhardinge
2008-09-25 21:44 ` Benjamin Herrenschmidt
2008-09-25 21:44 ` Benjamin Herrenschmidt
2008-09-25 22:27 ` Jeremy Fitzhardinge
2008-09-25 22:27 ` Jeremy Fitzhardinge
2008-09-25 23:02 ` Benjamin Herrenschmidt
2008-09-25 23:02 ` Benjamin Herrenschmidt
2008-09-24 22:17 ` Martin Schwidefsky
2008-09-24 22:17 ` Martin Schwidefsky
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