Subject: [RFC PATCH 14/17] ARM: kernel: save/restore 1:1 page tables

From: [email-masked] (Santosh Shilimkar)
Date: Thu, 07 Jul 2011 19:24:38 -0700

On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
> This patch adds the code required to allocate and populate page tables
> that are needed by save/restore code to deal with MMU off/on
> transactions.
>
> MMU is enabled early in the resume path which allows to call into
> Linux subsystems with init_mm virtual mappings (cloned at boot).
>
> Current thread page table pointer and context id is saved on power
> down from active_mm and restored on warm boot.
> Currently the translation tables contains 1:1 mappings of the Linux
> kernel code and data, and 1:1 UNCACHED mapping of control code required when MMU
> is turned off in the restore code path.
>
> Signed-off-by: Lorenzo Pieralisi<[email-masked]>
> ---
>   arch/arm/kernel/sr_mapping.c |   78 ++++++++++++++++++++++++++++++++++++++++++
>   1 files changed, 78 insertions(+), 0 deletions(-)
>   create mode 100644 arch/arm/kernel/sr_mapping.c
>
> diff --git a/arch/arm/kernel/sr_mapping.c b/arch/arm/kernel/sr_mapping.c
> new file mode 100644
> index 0000000..32640dc
> --- /dev/null
> +++ b/arch/arm/kernel/sr_mapping.c
> @@ -0,0 +1,78 @@
> +/*
> + * Copyright (C) 2008-2011 ARM Limited

This is more of question so don't beat me if I am wrong here.
Above file doesn't exist in k.org from 2008 right ?
I noticed this in your other patches too.

Regards
santosh