Can anyone help test Cortex A9 patches?

[Catalin Marinas]

On Thu, 2009-11-19 at 17:33 +0000, Russell King - ARM Linux wrote:
> On Thu, Nov 19, 2009 at 05:24:46PM +0000, Catalin Marinas wrote:
> > On Thu, 2009-11-19 at 09:03 +0000, Russell King - ARM Linux wrote:
> > > I need help testing Cortex A9 patches.  What I need is someone with a
> > > fairly fully fledged Cortex A9 platform with the ability to build and
> > > test recent kernels - and therefore be able to test my patches without
> > > modification.
> > > 
> > > Specifically, I'm looking for someone who can reproduce data corruption
> > > on DMA transfers from devices caused by Cortex A9's speculative prefetching
> > > 
> > > Unfortunately, I have no way to reproduce this problem here (I have no
> > > Cortex A9 hardware), and as such I can't test the fixes.
> > 
> > I can get access to a PBX-A9 board but there is no DMA support on it, so
> > not able to reproduce the problem.
> > 
> > What's the background to this? Has anyone reported issues?
> 
> Well, I had a fast response from people this morning, and the patch has
> been successfully tested against a recent kernel.  So problem mostly
> solved.
> 
> Essentially corruption caused by speculative prefetches from buffers while
> they are mapped for DMA.  You were sent an email late last month about
> the problem:
> 
> http://lists.arm.linux.org.uk/lurker/message/20091031.131319.18796aa1.en.html

It's a bit worrying that I don't have this e-mail in my inbox (nor
deleted items). I have to check the spam filter.

Thanks for the link anyway, I'll have a look tomorrow (have to go now).

-- 
Catalin