From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>,
Ken Chen <kenchen@google.com>,
Badari Pulavarty <pbadari@gmail.com>,
linux-mm <linux-mm@kvack.org>,
tony.luck@intel.com
Subject: Re: [rfc] more granular page table lock for hugepages
Date: Sun, 14 Oct 2007 08:42:24 -0700 [thread overview]
Message-ID: <20071014154223.GD19625@linux-os.sc.intel.com> (raw)
In-Reply-To: <200710140927.46478.nickpiggin@yahoo.com.au>
On Sun, Oct 14, 2007 at 09:27:46AM +1000, Nick Piggin wrote:
> On Saturday 13 October 2007 06:34, Siddha, Suresh B wrote:
> > On ia64, we have "tpa" instruction which does the virtual to physical
> > address conversion for us. But talking to Tony, that will fault during not
> > present or vhpt misses.
> >
> > Well, for now, manual walk is probably the best we have.
>
> Hmm, we'd actually want it to fault, and go through the full
> handle_mm_fault path if possible, and somehow just give an
But, this walk was happening with interrupts disabled. So the best will be
to have a peek at the page tables without faulting and the peek can comeback
and say, sorry, you have to go through slowest path.
Anyhow, lets first make sure that no one else has any major issues with
the simplest solution first :)
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next prev parent reply other threads:[~2007-10-14 15:42 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-08 22:52 [rfc] more granular page table lock for hugepages Siddha, Suresh B
2007-10-09 20:23 ` Ken Chen
2007-10-09 21:05 ` Badari Pulavarty
2007-10-10 0:15 ` Siddha, Suresh B
2007-10-10 6:10 ` Ken Chen
2007-10-10 7:50 ` Ken Chen
2007-10-11 11:39 ` Nick Piggin
2007-10-12 20:34 ` Siddha, Suresh B
2007-10-13 23:27 ` Nick Piggin
2007-10-14 1:01 ` [rfc] lockless get_user_pages for dio (and more) Nick Piggin
2007-10-14 18:19 ` Siddha, Suresh B
2007-10-15 4:15 ` Nick Piggin
2007-10-15 12:25 ` Nick Piggin
2007-10-15 17:03 ` Badari Pulavarty
2007-10-15 17:49 ` Siddha, Suresh B
2007-10-15 17:54 ` Siddha, Suresh B
2007-10-15 20:21 ` Ken Chen
2007-10-16 2:15 ` Nick Piggin
2007-10-16 0:14 ` Dave Hansen
2007-10-16 3:26 ` Nick Piggin
2007-10-16 3:32 ` Nick Piggin
2007-12-10 21:30 ` Dave Kleikamp
2007-12-12 4:57 ` Nick Piggin
2007-12-12 5:11 ` Dave Kleikamp
2007-12-12 5:40 ` Nick Piggin
2008-01-16 19:58 ` Dave Kleikamp
2008-01-17 6:34 ` Nick Piggin
2008-01-24 7:06 ` Nick Piggin
2007-10-14 15:42 ` Siddha, Suresh B [this message]
2007-10-15 4:17 ` [rfc] more granular page table lock for hugepages Nick Piggin
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