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

[David Miller]

From: Ingo Molnar <mingo@xxxxxxx>
Date: Sat, 18 Jul 2009 13:06:20 +0200

> I'm wondering why sparc32 frees from the middle of the kernel image. 
> The way architectures generally do it is to put freeable pages into 
> a separate section. That way it does not get mingled with the kernel 
> core image area (which stays nicely continuous).

It's conditionally free'able, we actually use the pages
if the system is SMP and has more than cpu 0 installed.
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