From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Avi Kivity <avi@qumranet.com>, Adrian Bunk <bunk@kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>, lguest <lguest@ozlabs.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] Export get_user_pages_fast
Date: Thu, 31 Jul 2008 18:52:23 +1000 [thread overview]
Message-ID: <1217494343.11188.437.camel@pasglop> (raw)
In-Reply-To: <200807311848.13142.nickpiggin@yahoo.com.au>
On Thu, 2008-07-31 at 18:48 +1000, Nick Piggin wrote:
> > If we do this then corresponding changes should be made to the powerpc
> > patch upon which Ben presently sits.
>
> Powerpc will still use the CONFIG symbol for the moment because 32-bit TLB
> flushing has not been verified to work, so we don't want to pull in the
> 64-bit gup. There is some discussion going on, but they probably need at
> least to implement pte_special, and then also do RCU freeing of page tables.
It's just a matter of building gup.c or not .. as long as it's
in the makefile as obj-$(CONFIG_PPC64) (as I put it in the merged
version of the patch), the weak symbol should work.
Ben.
next prev parent reply other threads:[~2008-07-31 8:52 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-30 4:38 [PATCH 1/2] Export get_user_pages_fast Rusty Russell
2008-07-30 4:39 ` [PATCH 2/2] lguest: use get_user_pages_fast() instead of get_user_pages() Rusty Russell
2008-07-30 5:30 ` Nick Piggin
2008-07-30 6:53 ` Rusty Russell
2008-07-30 5:23 ` [PATCH 1/2] Export get_user_pages_fast Nick Piggin
2008-07-30 10:35 ` Andrew Morton
2008-07-30 15:47 ` Adrian Bunk
2008-07-30 17:03 ` Andrew Morton
2008-07-30 17:09 ` Adrian Bunk
2008-07-30 17:14 ` Andrew Morton
2008-07-30 17:18 ` Adrian Bunk
2008-07-30 17:28 ` Andrew Morton
2008-07-30 17:39 ` Adrian Bunk
2008-07-30 17:50 ` Andrew Morton
2008-07-30 17:23 ` Avi Kivity
2008-07-30 17:29 ` Andrew Morton
2008-07-31 6:43 ` Avi Kivity
2008-07-31 7:02 ` Andrew Morton
2008-07-31 8:10 ` Nick Piggin
2008-07-31 8:21 ` Andrew Morton
2008-07-31 8:32 ` Benjamin Herrenschmidt
2008-07-31 8:48 ` Nick Piggin
2008-07-31 8:52 ` Benjamin Herrenschmidt [this message]
2008-07-31 8:56 ` Nick Piggin
2008-08-05 5:47 ` Rusty Russell
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