From: Christoph Lameter <cl@linux-foundation.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: steiner@sgi.com, akpm@linuxfoundation.org,
linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de,
holt@sgi.com, andrea@qumranet.com
Subject: Re: [patch 12/13] GRU Driver V3 - export is_uv_system(), zap_page_range() & follow_page()
Date: Mon, 07 Jul 2008 09:45:25 -0500 [thread overview]
Message-ID: <48722C05.6010808@linux-foundation.org> (raw)
In-Reply-To: <20080704073926.GA1449@infradead.org>
Christoph Hellwig wrote:
> On Thu, Jul 03, 2008 at 04:34:00PM -0500, steiner@sgi.com wrote:
>> +EXPORT_SYMBOL_GPL(zap_page_range);
>>
>> /*
>> * Do a quick page-table lookup for a single page.
>> @@ -1089,6 +1090,7 @@ no_page_table:
>> }
>> return page;
>> }
>> +EXPORT_SYMBOL_GPL(follow_page);
>
> NACK.
>
> These should never be called by a driver and suggest you need to rething
> your VM integration in this driver.
Well here we cannot run get_user_pages() since the context is atomic. What other choice is there?
next prev parent reply other threads:[~2008-07-07 14:46 UTC|newest]
Thread overview: 50+ 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 14:39 ` Jack Steiner
2008-07-07 14:54 ` Andrea Arcangeli
2008-07-07 14:54 ` Andrea Arcangeli
2008-07-07 16:29 ` Hugh Dickins
2008-07-07 16:29 ` Hugh Dickins
2008-07-07 16:53 ` Jack Steiner
2008-07-07 16:53 ` Jack Steiner
2008-07-08 2:16 ` Nick Piggin
2008-07-08 2:16 ` Nick Piggin
2008-07-09 19:11 ` Jack Steiner
2008-07-09 19:11 ` Jack Steiner
2008-07-10 7:31 ` Nick Piggin
2008-07-10 7:31 ` Nick Piggin
2008-07-10 13:29 ` Jack Steiner
2008-07-10 13:29 ` Jack Steiner
2008-07-10 14:21 ` Nick Piggin
2008-07-10 14:21 ` Nick Piggin
2008-07-10 16:33 ` Jack Steiner
2008-07-10 16:33 ` Jack Steiner
2008-07-10 16:52 ` Nick Piggin
2008-07-10 16:52 ` Nick Piggin
2008-07-10 17:20 ` Jack Steiner
2008-07-10 17:20 ` Jack Steiner
2008-07-11 3:30 ` Nick Piggin
2008-07-11 3:30 ` Nick Piggin
2008-07-07 18:58 ` Arjan van de Ven
2008-07-07 18:58 ` Arjan van de Ven
2008-07-07 19:29 ` Jack Steiner
2008-07-07 19:29 ` Jack Steiner
2008-07-07 21:03 ` Andrea Arcangeli
2008-07-07 21:03 ` Andrea Arcangeli
2008-07-07 14:45 ` Christoph Lameter [this message]
2008-07-07 17:58 ` Jack Steiner
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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