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Date: Mon, 17 Nov 2008 14:41:31 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] Mode switch when using RT heap on ARM
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To: Wolfgang Grandegger <wg@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>

Wolfgang Grandegger wrote:
> Gilles Chanteperdrix wrote:
>> Wolfgang Grandegger wrote:
>> +		ptr = (int *)(block + size - sizeof(int));
>>
>> This is not guaranteed to be aligned on an int. Could you try:
>>
>> 		ptr = (int *)(((unsigned long) block + size - sizeof(int)) & ~3);
> 
> With aligned accesses rtheap reports just3 mode switches in both modes,
> 0 and H_NONCACHED. But already one mode switch is too much!

This should be solved by the current versions of branch v2.4.x and trunk.

-- 
                                                 Gilles.