linux-kernel - Re: [PATCH CFT] ARM:S3C24XX: Enable ARM_PATCH_PHYS_VIRT and AUTO

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Message-Id: <201312131614.50060.heiko@sntech.de>
Date:	Fri, 13 Dec 2013 16:14:49 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	panchaxari <panchaxari.prasannamurthy@...aro.org>
Cc:	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH CFT] ARM:S3C24XX: Enable ARM_PATCH_PHYS_VIRT and AUTO_ZRELADDR by default

Am Freitag, 13. Dezember 2013, 12:28:25 schrieb panchaxari:
> Configs ARM_PATCH_PHYS_VIRT and AUTO_ZRELADDR are enabled as default
> to platform S3C24XX.
> 
> Introduction of PHYS_VIRT config as default would enable phy-to-virt and
> virt-to-phy translation function at boot and module loading time
> and enforce dynamic reallocation of memory. AUTO_ZRELADDR config would
> enable calculation of kernel load address at run time.
> 
> PHYS_VIRT config is mutually exclusive to XIP_KERNEL, XIP_KERNEL is used in
> systems with NOR flash devices, and ZRELADDR config is mutually exclusive
> to ZBOOT_ROM.
> 
> CFT::Call For Testing
> 
> Requesting maintainers of S3C24XX  platforms to evaluate the changes on the
> board and comment, as I dont have the board for testing and also requesting
> an ACK the changes.
> 
> Signed-off-by: panchaxari <panchaxari.prasannamurthy@...aro.org>
> Cc: Heiko Stuebner <heiko@...ech.de>
> Cc: Ben Dooks <ben-linux@...ff.org>
> Cc: Kukjin Kim <kgene.kim@...sung.com>
> Cc: Russell King <linux@....linux.org.uk>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-samsung-soc@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org

apart from the possible issue Vasily pointed out, my current kernels for 
s3c2442 and s3c2416 seem to work flawlessly with AUTO_ZRELADDR and 
ARM_PATCH_PHYS_VIRT.

I just checked the configs and it seems these options get automatically 
selected and must be specially deselected by the user.


Heiko
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