linux-kernel - Re: [PATCH] ARM: EXYNOS: mcpm: Don't rely on firmware's secondary_cpu

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Message-ID: <alpine.LFD.2.11.1406130922190.25775@knanqh.ubzr>
Date:	Fri, 13 Jun 2014 09:29:46 -0400 (EDT)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Chander Kashyap <k.chander@...sung.com>
cc:	Kukjin Kim <kgene.kim@...sung.com>,
	Doug Anderson <dianders@...omium.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Kevin Hilman <khilman@...aro.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	Inderpal Singh <inderpal.s@...sung.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Chander Kashyap <chander.kashyap@...aro.org>,
	"olof@...om.net" <olof@...om.net>,
	Tushar Behera <trblinux@...il.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Thomas Abraham <thomas.ab@...sung.com>,
	Abhilash Kesavan <a.kesavan@...sung.com>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCH] ARM: EXYNOS: mcpm: Don't rely on firmware's
 secondary_cpu_start

On Fri, 13 Jun 2014, Chander Kashyap wrote:

> This patch is effectively changing the mcpm_entry_point address from
> nsbase + 0x1c to nsbase + 0x8
> 
> Hence while integrating with mainline u-boot we need to take care for
> new mcpm_entry_point address.

Why not inserting a NOP as the first instruction then? That way the 
offset will remain the same.


Nicolas
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