From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Jack Steiner <steiner@sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>,
Christoph Hellwig <hch@infradead.org>,
cl@linux-foundation.org, akpm@osdl.org,
linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de,
holt@sgi.com, andrea@qumranet.com, linux-mm@kvack.org
Subject: Re: [patch 12/13] GRU Driver V3 - export is_uv_system(), zap_page_range() & follow_page()
Date: Fri, 11 Jul 2008 00:21:28 +1000 [thread overview]
Message-ID: <200807110021.29392.nickpiggin@yahoo.com.au> (raw)
In-Reply-To: <20080710132903.GA17830@sgi.com>
On Thursday 10 July 2008 23:29, Jack Steiner wrote:
> On Thu, Jul 10, 2008 at 05:31:54PM +1000, Nick Piggin wrote:
> > On Thursday 10 July 2008 05:11, Jack Steiner wrote:
> > > I'll post the new GRU patch in a few minutes.
> >
> > It looks broken to me. How does it determine whether it has a
> > normal page or not?
>
> Right. Hugepages are not currently supported by the GRU. There is code that
> I know is missing/broken in this path. I'm trying to get the core driver
> accepted, then I'll get the portion dealing with hugepages working.
Oh, I meant "normal" pages as in vm_normal_page(), or is there some
other reason this codepath is exempt from them?
Using gup.c code I don't think will prevent your driver from getting
accepted. Conversely, I would not like the open coded page table walk
to go upstream...
next prev parent reply other threads:[~2008-07-10 14:22 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-03 21:33 [patch 00/13] GRU Driver V3 - Overview steiner
2008-07-03 21:33 ` [patch 01/13] GRU Driver V3 - hardware data structures steiner
2008-07-03 21:33 ` [patch 02/13] GRU Driver V3 - GRU instructions & macros steiner
2008-07-03 21:33 ` [patch 03/13] GRU Driver V3 - driver internal header files steiner
2008-07-03 21:33 ` [patch 04/13] GRU Driver V3 - kernel services " steiner
2008-07-03 21:33 ` [patch 05/13] GRU Driver V3 - driver initialization, file & vma ops steiner
2008-07-03 21:33 ` [patch 06/13] GRU Driver V3 - page faults & exceptions steiner
2008-07-03 21:33 ` [patch 07/13] GRU Driver V3 - kernel services provide by driver steiner
2008-07-03 21:33 ` [patch 08/13] GRU Driver V3 - resource management steiner
2008-07-03 21:33 ` [patch 09/13] GRU Driver V3 - /proc interfaces steiner
2008-07-03 21:33 ` [patch 10/13] GRU Driver V3 - TLB flushing, MMUOPS callouts steiner
2008-07-03 21:33 ` [patch 11/13] GRU Driver V3 - driver makefile steiner
2008-07-03 21:34 ` [patch 12/13] GRU Driver V3 - export is_uv_system(), zap_page_range() & follow_page() steiner
2008-07-04 7:39 ` Christoph Hellwig
2008-07-07 14:39 ` Jack Steiner
2008-07-07 14:54 ` Andrea Arcangeli
2008-07-07 16:29 ` Hugh Dickins
2008-07-07 16:53 ` Jack Steiner
2008-07-08 2:16 ` Nick Piggin
2008-07-09 19:11 ` Jack Steiner
2008-07-10 7:31 ` Nick Piggin
2008-07-10 13:29 ` Jack Steiner
2008-07-10 14:21 ` Nick Piggin [this message]
2008-07-10 16:33 ` Jack Steiner
2008-07-10 16:52 ` Nick Piggin
2008-07-10 17:20 ` Jack Steiner
2008-07-11 3:30 ` Nick Piggin
2008-07-07 18:58 ` Arjan van de Ven
2008-07-07 19:29 ` Jack Steiner
2008-07-07 21:03 ` Andrea Arcangeli
2008-07-07 14:45 ` Christoph Lameter
2008-07-07 17:58 ` Jack Steiner
2008-07-03 21:34 ` [patch 13/13] GRU Driver V3 - driver/misc Makefile & Kconfig changes steiner
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