linux-kernel - Re: [PATCH 1/6] efi: create memory map iteration helper

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Date:	Mon, 13 Jan 2014 12:53:01 -0500
From:	Mark Salter <msalter@...hat.com>
To:	Matt Fleming <matt@...sole-pimps.org>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-efi@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>, matt.fleming@...el.com,
	Leif Lindholm <leif.lindholm@...aro.org>, roy.franz@...aro.org,
	patches@...aro.org, Grant Likely <grant.likely@...retlab.ca>
Subject: Re: [PATCH 1/6] efi: create memory map iteration helper

On Mon, 2014-01-13 at 15:17 +0000, Matt Fleming wrote:
> On Fri, 10 Jan, at 05:29:05PM, Mark Salter wrote:
> > There are a lot of places in the kernel which iterate through an
> > EFI memory map. Most of these places use essentially the same
> > for-loop code. This patch adds a for_each_efi_memory_desc()
> > helper to clean up all of the existing duplicate code and avoid
> > more in the future.
> > 
> > Signed-off-by: Mark Salter <msalter@...hat.com>
> > ---
> >  include/linux/efi.h | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/include/linux/efi.h b/include/linux/efi.h
> > index 11ce678..9dc5b05 100644
> > --- a/include/linux/efi.h
> > +++ b/include/linux/efi.h
> > @@ -618,6 +618,12 @@ extern int efi_set_rtc_mmss(const struct timespec *now);
> >  extern void efi_reserve_boot_services(void);
> >  extern struct efi_memory_map memmap;
> >  
> > +/* Iterate through an efi_memory_map */
> > +#define for_each_efi_memory_desc(m, md)					   \
> > +	for ((md) = (m)->map;						   \
> > +	     (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
> > +	     (md) = (void *)(md) + (m)->desc_size)
> > +
> 
> Err, what? I just picked up your previous patch ("x86/efi: Create memory
> map iteration helper") which adds this chunk, and I didn't see a follow
> up email telling me not to pick it up.
> 
> What's the plan?
> 
Sorry, I meant to drop this one from this series. The one you picked
up is the one I wanted picked up.

--Mark


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