Re: [Xenomai-help] Mode switch when using RT heap on ARM

[Wolfgang Grandegger <wg@domain.hid>]

Wolfgang Grandegger wrote:
> Gilles Chanteperdrix wrote:
>> Wolfgang Grandegger wrote:
>>> Hello,
>>>
>>> I realized that accessing memory allocated with rt_heap_alloc() causes
>>> mode switches on ARM i.mx31. The attached patch provides a demo program
>>> to demonstrate the problem, which actually does *not* show up on my
>>> PowerPC TQM5200 board.
>> On ARM, we normally map the heaps uncacheable, this should not be
>> necessary on ARMv6, but I am afraid we then get the fault on first access.
> 
> Is each cache-line of the heap not touched automatically when the heap
> gets created? I thought it's necessary for other archs as well.

s/cache-line/page/

Wolfgang.