Re: [PATCH v2 0/8] sparc: use asm-generic/dma-mapping-common.h andpci-dma-compat.h

[Ingo Molnar]

* David Miller <davem@xxxxxxxxxxxxx> wrote:

> From: Joerg Roedel <joerg.roedel@xxxxxxx>
> Date: Tue, 21 Jul 2009 18:05:38 +0200
> 
> > Hmm these checks sound specific and hard to maintain. I think 
> > its best to give architectures the option whether to enable this 
> > check or not.
> 
> No matter how the arch works in this area, there should be some 
> kind of sanity check.
> 
> So, it probably makes sense to allow an arch to override the 
> validation function rather than turn the test completely off.

I'm wondering how sparc32 handles core_kernel_text() & friends? 

Those functions already assume that the bits between _stext and 
_etext are all core kernel text and not generic pages freed back to 
the buddy.

	Ingo
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