linux-kernel - Re: [PATCH] x86: x86_{phys,virt}

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Date:	Thu, 18 Sep 2008 12:58:31 +0100
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	<tglx@...utronix.de>, <linux-kernel@...r.kernel.org>,
	<hpa@...or.com>
Subject: Re: [PATCH] x86: x86_{phys,virt}_bits field also for i386 (v3)

>>> Ingo Molnar <mingo@...e.hu> 18.09.08 13:20 >>>
>
>* Ingo Molnar <mingo@...e.hu> wrote:
>
>> * Jan Beulich <jbeulich@...ell.com> wrote:
>> 
>> > I'm really sorry for that, yet another merge oversight (not caught 
>> > because only re-tested on x86-64). Here's a better one.
>> 
>> ah, i see, the delta below. Nasty.
>
>the attached config fails in a similar way.

Hmm, yes, other than in .27, -tip derives resource_size_t from phys_addr_t,
regardless of CONFIG_RESOURCES_64BIT (and the config you provided
is a non-PAE one). I have to question that change, which I'm sure is
responsible for this failure. If there's a good reason for this, then
phys_addr_valid() should use phys_addr_t as its parameter type (and
so should ioremap() & Co), and the pre-processor conditional should
then change to depend on CONFIG_PHYS_ADDR_T_64BIT. Since ioremap()
would need to change first, I'd have to withdraw the patch until that
gets sorted out.

Jan

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