linux-kernel - Re: [PATCH 1/2] x86: unify kmap_atomic_pfn() and iomap_atomic_prot

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Message-ID: <20090312122427.GA24295@elte.hu>
Date:	Thu, 12 Mar 2009 13:24:27 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH 1/2] x86: unify kmap_atomic_pfn() and
	iomap_atomic_prot_pfn()


* Akinobu Mita <akinobu.mita@...il.com> wrote:

> 2009/3/12 Ingo Molnar <mingo@...e.hu>:
> >
> > * Akinobu Mita <akinobu.mita@...il.com> wrote:
> >
> >> 2009/3/12 Thomas Gleixner <tglx@...utronix.de>:
> >> > On Wed, 11 Mar 2009, Akinobu Mita wrote:
> >> >> kmap_atomic_pfn() and iomap_atomic_prot_pfn() are almost same except
> >> >> pgprot. This patch removes the code duplication for these two functions.
> >> >
> >> > How exaclty does this compile with CONFIG_HIGHMEM=n ?
> >> >
> >>
> >> Oh, I didn't try without CONFIG_HIGHMEM.
> >
> > i had it applied in testing locally and didnt see problems so
> > far. Let me know if you can see any problems.
> 
> It actually didn't compile with CONFIG_HIGHMEM=n as Thomas 
> pointed out.
> 
> arch/x86/mm/iomap_32.c:49: undefined reference to 
> `kmap_atomic_prot_pfn'

hm, i didnt see any build failures myself. Could you please send 
the .config that triggers it?

	Ingo
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