linux-kernel - Re: microblaze syscall list

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Date:	Fri, 02 May 2008 15:38:20 +1000
From:	John Williams <john.williams@...alogix.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	John Williams <jwilliams@...e.uq.edu.au>, monstr@...nam.cz,
	Matthew Wilcox <matthew@....cx>,
	Will Newton <will.newton@...il.com>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linux-arch@...r.kernel.org, git@...inx.com,
	Stephen Neuendorffer <stephen.neuendorffer@...inx.com>,
	John Linn <John.Linn@...inx.com>
Subject: Re: microblaze syscall list

Arnd Bergmann wrote:
> On Monday 28 April 2008, Arnd Bergmann wrote:
> 
>>How about this strategy then:
>>* Change all the data types and syscall numbers in the -for-2.6.27
>>branch to only include the minimal set, and a modern ABI
>>* Add the old interfaces as an out-of-tree patch that adds source
>>level compatibility with the old libc, but does not modify any
>>of the new interfaces, so that a patched kernel can run all binaries
>>built for the upstream version.
>>* phase out the old source interface gradually, as all users update
>>their libc source code.
> 
> 
> Any news on this from the microblaze people? Have you made up your mind
> on what route you want to go?

I think we're still digesting it.  I need to sync up with Michal and the 
Xilinx people.  The libc and kernel API changes have to happen in 
tandem, otherwise Michal can't properly test the kernel he's pushing.

I am the defacto MicroBlaze uClibc and toolchain "builder" but somewhat 
reluctantly - am trying to convince Xilnx to hand that over to someone 
who is expert at it.

Michal, John L, any thoughts?

John


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