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

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Message-ID: <20140113151759.GG3256@console-pimps.org>
Date:	Mon, 13 Jan 2014 15:17:59 +0000
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Mark Salter <msalter@...hat.com>
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 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?

-- 
Matt Fleming, Intel Open Source Technology Center
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