[PATCH/RFC v2] ARM: shmobile: defconfig: Enable LPAE

Florian Fainelli f.fainelli at gmail.com
Wed Apr 25 11:17:00 PDT 2018


On 04/25/2018 09:14 AM, Fabrizio Castro wrote:
> On iWave's iwg20m DDR1 512MB memory cannot be accessed with 32-bit
> addresses, hence we need LPAE.
> 
> Signed-off-by: Biju Das <biju.das at bp.renesas.com>
> Signed-off-by: Fabrizio Castro <fabrizio.castro at bp.renesas.com>
> ---
> This information is mentioned in the "RZ/G Series User’s Manual: Hardware",
> Chapter 2, Area Map. Is this patch going to break the functionality of other
> boards? Comments welcome.

LPAE is not supported by all Cortex-A class cores, for instance
Cortex-A9 does not support LPAE, if you have boards using such cores,
then this would result in a kernel that would not boot on these
platforms. Can that be a problem with the shmobile_defconfig?
-- 
Florian



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