Subject: [PATCH] arm64: Fix SCTLR_EL1 initialisation

From: [email-masked] (Will Deacon)
Date: Wed, 17 Dec 2014 17:39:16 +0000

On Wed, Dec 17, 2014 at 03:50:21PM +0000, Suzuki K. Poulose wrote:
> From: "Suzuki K. Poulose" <[email-masked]>
> 
> We initialise the SCTLR_EL1 value by read-modify-writeback
> of the desired bits, leaving the other bits (including reserved
> bits(RESx)) untouched. However, sometimes the boot monitor could
> leave garbage values in the RESx bits which could have different
> implications. This patch makes sure that all the bits, including
> the RESx bits, are set to the proper state, except for the
> 'endianness' control bits, EE(25) & E0E(24)- which are set early
> in the el2_setup.
> 
> Updated the state of the Bit[6] in the comment to RES0 in the
> comment.
> 
> Signed-off-by: Suzuki K. Poulose <[email-masked]>
> Cc: Will Deacon <[email-masked]>
> Cc: Catalin Marinas <[email-masked]>
> ---

Looks good to me:

  Acked-by: Will Deacon <[email-masked]>

Is this 3.19 material, or simply a cleanup/being cautious?

Will