From: "David S. Miller" <davem@davemloft.net>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: hugh@veritas.com, nickpiggin@yahoo.com.au, akpm@osdl.org,
benh@kernel.crashing.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] freepgt: free_pgtables use vma list
Date: Tue, 22 Mar 2005 15:56:01 -0800 [thread overview]
Message-ID: <20050322155601.28369fe9.davem@davemloft.net> (raw)
In-Reply-To: <B8E391BBE9FE384DAA4C5C003888BE6F03211851@scsmsx401.amr.corp.intel.com>
On Tue, 22 Mar 2005 15:53:08 -0800
"Luck, Tony" <tony.luck@intel.com> wrote:
> But I'm still confused by all the math on addr/end at each
> level. Rounding up/down at each level should presumably be
> based on the size of objects at the next level. So the pgd
> code should round using PUD_MASK, pud should use PMD_MASK etc.
> Perhaps I missed some updates, but the version of the patch
> that I have (and the simulator) is using PMD_MASK in the
> pgd_free_range() function ... which is surely wrong.
PMD_MASK decides the smallest page table chunk, so we mask
it at the top level.
Look at the next level down in the call chain, the masking
maskes more sense there.
next prev parent reply other threads:[~2005-03-22 23:57 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-22 23:53 [PATCH 1/5] freepgt: free_pgtables use vma list Luck, Tony
2005-03-22 23:56 ` David S. Miller [this message]
2005-03-23 0:56 ` Hugh Dickins
2005-03-23 1:10 ` Andrew Morton
2005-03-23 2:00 ` David S. Miller
2005-03-23 2:10 ` Nick Piggin
2005-03-23 2:15 ` David S. Miller
-- strict thread matches above, loose matches on Subject: below --
2005-03-22 22:40 Luck, Tony
2005-03-22 23:30 ` David S. Miller
2005-03-23 0:40 ` Hugh Dickins
2005-03-22 18:06 Luck, Tony
2005-03-22 18:48 ` Hugh Dickins
2005-03-21 22:31 Luck, Tony
2005-03-21 23:02 ` David S. Miller
2005-03-22 4:14 ` Nick Piggin
2005-03-22 5:29 ` David S. Miller
2005-03-22 6:08 ` Hugh Dickins
2005-03-22 6:33 ` Nick Piggin
2005-03-22 17:52 ` David S. Miller
2005-03-22 17:55 ` David S. Miller
2005-03-22 5:42 ` Hugh Dickins
2005-03-21 20:52 Hugh Dickins
2005-03-21 22:26 ` David S. Miller
2005-03-22 5:47 ` Hugh Dickins
2005-03-22 17:41 ` David S. Miller
2005-03-22 11:40 ` Andrew Morton
2005-03-22 12:17 ` Nick Piggin
2005-03-22 16:37 ` Hugh Dickins
2005-03-22 18:34 ` David S. Miller
2005-03-22 19:01 ` David S. Miller
2005-03-22 19:21 ` David S. Miller
2005-03-22 19:23 ` David S. Miller
2005-03-22 19:36 ` Hugh Dickins
2005-03-22 20:21 ` David S. Miller
2005-03-22 23:45 ` Benjamin Herrenschmidt
2005-03-22 20:33 ` David S. Miller
2005-03-22 21:51 ` Hugh Dickins
2005-03-22 22:41 ` David S. Miller
2005-03-23 0:51 ` Hugh Dickins
2005-03-23 2:09 ` David S. Miller
2005-03-22 23:32 ` Nick Piggin
2005-03-22 23:44 ` David S. Miller
2005-03-23 0:19 ` Nick Piggin
2005-03-23 0:20 ` David S. Miller
2005-03-23 0:00 ` David S. Miller
2005-03-23 0:03 ` David S. Miller
2005-03-22 21:28 ` David S. Miller
2005-03-22 23:30 ` Benjamin Herrenschmidt
2005-03-23 13:28 ` Hugh Dickins
2005-03-23 23:07 ` Benjamin Herrenschmidt
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