[PATCH RFCv2 1/5] ARM: use write allocate by default on ARMv6+

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Sat Jun 28 08:39:55 PDT 2014

Hello Russell,

On Tue, 17 Jun 2014 12:26:24 +0100, Russell King - ARM Linux wrote:
> On Tue, Jun 17, 2014 at 10:48:54AM +0200, Thomas Petazzoni wrote:
> > Russell,
> > 
> > Do you have some input/feedback about the below proposals/questions?
> Not at the moment, I'm busy sorting through the 150-odd months-old
> patches which remain in my tree post-merge window, working through
> regressions, and trying to sort them out so I can (re-)post them and
> hopefully get rid of them.
> Of course, if it didn't take many months to get patches into mainline,
> then I wouldn't be doing this right now, and I could spend more time
> thinking more about these sorts of issues, rather than (eg) thinking
> about how to generate DT binding documentation for drivers which have
> been merged without that required documentation, which I then need to
> modify, and then promptly get asked to write that required documentation
> for.

I surely understand that it sometimes takes a lot of time to get some
feedback from maintainers, I also had similar troubles with the
maintainers of certain subsystems.

However, I'd really like to see the hardware I/O coherency issue make
some progress: it's currently completely broken on Armada 370, causing
random corruptions, and the only solution is to be able to properly
enable write-allocate. Your patch series makes that partially possible,
but there are some remaining problems, which I summarized at

Thanks a lot for your help and suggestions,

Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering

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