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From: Nicolas Pitre <nicolas.pitre@linaro.org>
To: Stuart Menefy <stuart.menefy@mathembedded.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org,
	Will Deacon <will.deacon@arm.com>,
	Russell King <linux@armlinux.org.uk>,
	Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH] ARM: MCPM: Add provision for platform specific wfi alternative
Date: Mon, 11 Feb 2019 10:57:38 -0500 (EST)
Message-ID: <nycvar.YSQ.7.76.1902111056070.2213@knanqh.ubzr> (raw)
In-Reply-To: <CAPoDyq6vzXuR+Z=t9eyJytuOGZknyY1nOY7v_ir86VTZM3DH5g@mail.gmail.com>

On Mon, 11 Feb 2019, Stuart Menefy wrote:

> Folks
> 
> On Sun, 10 Feb 2019 at 23:12, Stuart Menefy
> <stuart.menefy@mathembedded.com> wrote:
> >
> > On some platforms (in particular the Exynos5260) the wfi is not
> > executed directly by the operating system but by trapping into the
> > secure monitor. This allows us to replicate the behaviour of the
> > vendor supplied kernel using the MCPM framework.
> >
> > Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com>
> 
> I forgot to add, this is a part of a series of patches which updates
> the Exynos 5260
> support, allowing use of the kernel on secure parts and adding suspend
> functionality,
> Version 1 of the patches has been posted to the samsung-soc mailing list:
> https://www.spinics.net/lists/linux-samsung-soc/#65035
> and I'm just about to post version 2. However as this is the only patch which
> touches generic ARM files I though I'd better check the approach is acceptable
> to a wider audience.

I was about to ask that you also post those patches making use of this 
change.  It is not possible to evaluate if the approach makes sense 
without seeing how it is used.


Nicolas

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      parent reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-10 23:12 Stuart Menefy
2019-02-11 13:53 ` Stuart Menefy
2019-02-11 14:12   ` Russell King - ARM Linux admin
2019-02-11 15:57   ` Nicolas Pitre [this message]

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