linux-kernel - Re: [PATCH 28/31] memblock: Export MEMBLOCK

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Date:	Wed, 28 Jul 2010 19:29:02 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	David Miller <davem@...emloft.net>, hpa@...or.com, mingo@...e.hu,
	tglx@...utronix.de, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 28/31] memblock: Export MEMBLOCK_ERROR again

On Tue, 2010-07-27 at 23:13 -0700, Yinghai Lu wrote:
> So still keep MEMBLOCK_ERROR to (~(phys_addr_t)0) ?

No point for now. lmb_alloc() etc... are defined as returning 0 for
failure so we would need to fix that too.

As I said in a previous email we do need to revisit the memblock error
handling.

> We can change some variable from unsigned long to phys_addr_t that
> will be assigned by memblock_find_base().
> 
> that could avoid casting too. 

That would be a good idea anyways if those are indeed carrying a
physical address.

Ben.


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