From: Paul Mackerras <paulus@samba.org>
To: linux-kernel@vger.kernel.org
Subject: Re: please revert bogus patch to vmscan.c
Date: Wed, 31 Oct 2001 08:39:48 +1100 (EST) [thread overview]
Message-ID: <15327.7716.638079.235753@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20011030095757.A9956@hq2>
In-Reply-To: <Pine.LNX.4.33.0110300835140.8603-100000@penguin.transmeta.com> <20011030095757.A9956@hq2>
Victor Yodaiken writes:
> You can't turn off hardware hash-chains on anything past 603, sadly enough.
> So all Macs, many embedded boards, ...
All the 4xx, 8xx, and 82xx embedded PPC cpus use software TLB
loading. The 7450 has a mode bit to say whether to use a hash table
or software TLB loading. And the new "Book E" specification also
mandates software-loaded TLBs.
That still leaves almost all of the current Macs and RS/6000s using a
hash table, of course. It does sound like providing at least the
option to use software TLB loading is becoming common in new PPC
designs.
(And BTW they are not hash *chains*, there is no chaining involved.
There is a primary bucket and a secondary bucket for any given
address, each of which can hold 8 ptes.)
Paul.
next prev parent reply other threads:[~2001-10-30 21:53 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-29 23:08 Benjamin LaHaise
2001-10-29 23:14 ` David S. Miller
2001-10-29 23:15 ` Benjamin LaHaise
2001-10-29 23:25 ` Linus Torvalds
2001-10-29 23:33 ` Benjamin LaHaise
2001-10-29 23:36 ` David S. Miller
2001-10-29 23:39 ` Benjamin LaHaise
2001-10-29 23:41 ` Linus Torvalds
2001-10-29 23:48 ` Benjamin LaHaise
2001-10-29 23:50 ` David S. Miller
2001-10-29 23:51 ` Benjamin LaHaise
2001-10-29 23:55 ` David S. Miller
2001-10-29 23:57 ` Benjamin LaHaise
2001-10-29 23:58 ` Linus Torvalds
2001-10-30 0:01 ` David S. Miller
2001-10-30 0:05 ` Benjamin LaHaise
2001-10-30 1:31 ` Rik van Riel
2001-10-30 1:34 ` David S. Miller
2001-10-30 1:42 ` Linus Torvalds
2001-10-30 2:25 ` Benjamin LaHaise
2001-10-30 15:20 ` Andrea Arcangeli
2001-10-30 15:34 ` Rik van Riel
2001-10-30 15:51 ` Andrea Arcangeli
2001-10-30 16:34 ` Benjamin LaHaise
2001-10-30 17:00 ` Andrea Arcangeli
2001-10-30 17:07 ` Rik van Riel
2001-10-30 16:13 ` Giuliano Pochini
2001-10-30 16:54 ` Andrea Arcangeli
2001-10-30 17:23 ` Giuliano Pochini
2001-10-30 17:30 ` Andrea Arcangeli
[not found] ` <15327.8495.767553.389519@cargo.ozlabs.ibm.com>
2001-10-31 1:57 ` Andrea Arcangeli
2001-10-31 0:38 ` Paul Mackerras
2001-10-30 16:38 ` Linus Torvalds
2001-10-30 16:47 ` Benjamin LaHaise
2001-10-30 16:57 ` Victor Yodaiken
2001-10-30 17:16 ` Troy Benjegerdes
2001-10-30 17:17 ` Linus Torvalds
2001-10-30 17:51 ` Victor Yodaiken
2001-10-30 18:01 ` Cort Dougan
2001-10-30 17:23 ` Benjamin Herrenschmidt
2001-10-30 17:36 ` Benjamin Herrenschmidt
2001-10-30 17:41 ` Linus Torvalds
2001-10-30 21:39 ` Paul Mackerras [this message]
2001-10-30 22:36 ` Victor Yodaiken
2001-10-30 1:46 ` David S. Miller
2001-10-30 1:49 ` Benjamin LaHaise
2001-10-30 9:03 ` Alan Cox
2001-10-29 23:22 ` Linus Torvalds
2001-10-29 23:29 ` Benjamin LaHaise
2001-10-29 23:44 ` Linus Torvalds
2001-10-30 0:02 ` Hugh Dickins
2001-10-30 0:04 ` Linus Torvalds
2001-10-30 0:04 ` David S. Miller
2001-10-29 23:51 ` Paul Mackerras
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