linux-kernel - Re: [PATCH] ARM: omap5/dra7xx: Enable booting secondary CPU in HYP mode

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Message-ID: <20150105223347.GL4081@atomide.com>
Date:	Mon, 5 Jan 2015 14:33:47 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>
Cc:	Santosh Shilimkar <santosh.shilimkar@...com>,
	Christoffer Dall <christoffer.dall@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: omap5/dra7xx: Enable booting secondary CPU in HYP
 mode

* Lennart Sorensen <lsorense@...lub.uwaterloo.ca> [141219 13:51]:
> If the boot loader enables HYP mode on the boot CPU, the secondary CPU
> also needs to call into the ROM to switch to HYP mode before booting.
> The firmwares on the omap5 and dra7xx unfortunately do not take care
> of this, so it has to be handled by the kernel.
> 
> This patch is based on "[PATCH 2/2] ARM: OMAP5: Add HYP mode entry support
> for secondary CPUs" by Santosh Shilimkar <santosh.shilimkar@...com>,
> except this version does not require a compile time CONFIG to control
> if it should enable HYP mode or not, it simply does it based on the mode
> of the boot CPU, so it works whether the CPU boots in SVC or HYP mode,
> and should even work as a guest kernel inside kvm if qemu decides to
> support emulating the omap5 or dra7xx.

Applying into omap-for-v3.19/fixes with cc stable for v3.16+.

Thanks,

Tony
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