[RFC] mmaping with VIVT cache

Pawel Moll mail at pawelmoll.com
Mon Sep 20 07:31:35 EDT 2010


> pgprot_noncached will be unsafe on ARMv6 and ARMv7 architectures when
> used for mapping existing memory, as you'll be violating an architectural
> restriction (having aliasing mappings of memory as 'Strongly ordered'
> when there is a pre-existing 'Memory' type mapping.)
> adead.org/mailman/listinfo/linux-arm-kernel

Oh, I'm not concerned about it - it was a custom hack in order to get a
"sh-customer" running. I've just mentioned it as an example that the
problem is real and encountered by different people in different
places...

Paweł




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