Re: Problem with remap_page_range

[Dmytro Bablinyuk]

> >  if (remap_page_range(vma->vm_start,
> >                       DSP_ADDR,
> >                       size,
> >                       vma->vm_page_prot
> >                       ))
> >    
>
> Your remap call isn't adding _PAGE_NO_CACHE and _PAGE_GUARDED flags
> like ioremap_nocache()/ioremap() do on PPC.  You'll get bad results
> because of the ordering and cache issues resulting from not using
> these PTE flags.  In 2.6, these can be added using pgprot_noncached()
> that is defined per-arch.
>
>  
Thank you Matt,

Coud you please give me en example on how to add these flags to remap in 
kernel 2.4.21 (powerpc).
It seems I could not find these flags available in my kernel.

Thank you very much



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