linux-kernel - Re: [PATCH 1/2] Export get_user_pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200807311856.39837.nickpiggin@yahoo.com.au>
Date:	Thu, 31 Jul 2008 18:56:39 +1000
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	benh@...nel.crashing.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Avi Kivity <avi@...ranet.com>, Adrian Bunk <bunk@...nel.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	lguest <lguest@...abs.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] Export get_user_pages_fast

On Thursday 31 July 2008 18:52, Benjamin Herrenschmidt wrote:
> 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.

I see. Here we are, then.

View attachment "out-of-line-gup.patch" of type "text/x-diff" (4249 bytes)