linux-kernel - Re: [PATCH 08/13] android: persistent_ram: handle reserving and mapping memory

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Date:	Wed, 7 Mar 2012 14:08:11 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Colin Cross <ccross@...roid.com>,
	Android Kernel Team <kernel-team@...roid.com>
Subject: Re: [PATCH 08/13] android: persistent_ram: handle reserving and
 mapping memory

On Wed, Mar 07, 2012 at 01:58:18PM -0800, John Stultz wrote:
> From: Colin Cross <ccross@...roid.com>
> 
> Replace the ioremapped memory passed in from the drivers with
> a memblock_reserve and vmap.  Adds a new function,
> persistent_ram_early_init, designed to be called from the machine
> init_early callback, that calls memblock_remove and saves the
> provided persistent ram area layout.
> 
> Drivers only pass in their struct device * and ecc settings.
> Locating and mapping the memory is now handled entirely within
> persistent_ram.
> 
> Also, convert ram_console to the new persistent_ram_init
> parameters that only take a struct device * and ecc settings.
> 
> CC: Greg KH <gregkh@...uxfoundation.org>
> CC: Android Kernel Team <kernel-team@...roid.com>
> Change-Id: Ibc87ec27b70ed1c928eaa487503469e199973058
> Change-Id: I12b018381a2ed5965a8a4b0da40c3e640f92b6cf
> Signed-off-by: Colin Cross <ccross@...roid.com>
> [jstultz: Fix pr_info casting issues on 64bit, folded two
> patches as the build breaks if they are apart. Also replaced
> phys_to_page() w/ pfn_to_page(addr>>PAGE_SHIFT), as phys_to_page
> is only on a few arches.]

Please put your comments above the signed-off-by area, it makes it
easier on tools that parse this area.

thanks,

greg k-h
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