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From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Mark Rutland <mark.rutland@arm.com>, Andrew Lunn <andrew@lunn.ch>,
	Jason Cooper <jason@lakedaemon.net>,
	devicetree@vger.kernel.org,
	Antoine Tenart <antoine.tenart@bootlin.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Will Deacon <will.deacon@arm.com>,
	Maxime Chevallier <maxime.chevallier@bootlin.com>,
	Nadav Haklai <nadavh@marvell.com>,
	Rob Herring <robh+dt@kernel.org>, Victor Gu <xigu@marvell.com>,
	linux-arm-kernel@lists.infradead.org,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Subject: Re: [PATCH] arm64: dts: marvell: armada-37xx: reserve memory for ATF
Date: Sat, 21 Apr 2018 16:18:59 +0200	[thread overview]
Message-ID: <20180421161859.22d1ed18@windsurf> (raw)
In-Reply-To: <20180421140342.25082-1-miquel.raynal@bootlin.com>

Hello,

On Sat, 21 Apr 2018 16:03:42 +0200, Miquel Raynal wrote:
> From: Victor Gu <xigu@marvell.com>
> 
> The PSCI area should be reserved in Linux for PSCI operations such as
> suspend/resume.
> 
> Reserve 2MiB of memory which matches the area used by ATF (BL1, BL2,
> BL3x, see [1] in ATF source code). This covers all PSCI code and data
> area and is 2MiB aligned, which is required by Linux for huge pages
> handling.
> 
> [1] plat/marvell/a3700/common/include/platform_def.h
> 
> Signed-off-by: Victor Gu <xigu@marvell.com>
> [miquel.raynal@bootlin.com: reword of commit message]
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Shouldn't this be done automatically by the bootloader, before passing
the DTB to the kernel ?

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

WARNING: multiple messages have this Message-ID (diff)
From: thomas.petazzoni@bootlin.com (Thomas Petazzoni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: dts: marvell: armada-37xx: reserve memory for ATF
Date: Sat, 21 Apr 2018 16:18:59 +0200	[thread overview]
Message-ID: <20180421161859.22d1ed18@windsurf> (raw)
In-Reply-To: <20180421140342.25082-1-miquel.raynal@bootlin.com>

Hello,

On Sat, 21 Apr 2018 16:03:42 +0200, Miquel Raynal wrote:
> From: Victor Gu <xigu@marvell.com>
> 
> The PSCI area should be reserved in Linux for PSCI operations such as
> suspend/resume.
> 
> Reserve 2MiB of memory which matches the area used by ATF (BL1, BL2,
> BL3x, see [1] in ATF source code). This covers all PSCI code and data
> area and is 2MiB aligned, which is required by Linux for huge pages
> handling.
> 
> [1] plat/marvell/a3700/common/include/platform_def.h
> 
> Signed-off-by: Victor Gu <xigu@marvell.com>
> [miquel.raynal at bootlin.com: reword of commit message]
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Shouldn't this be done automatically by the bootloader, before passing
the DTB to the kernel ?

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

  reply	other threads:[~2018-04-21 14:18 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-21 14:03 [PATCH] arm64: dts: marvell: armada-37xx: reserve memory for ATF Miquel Raynal
2018-04-21 14:03 ` Miquel Raynal
2018-04-21 14:18 ` Thomas Petazzoni [this message]
2018-04-21 14:18   ` Thomas Petazzoni
2018-04-23  8:31   ` Miquel Raynal
2018-04-23  8:31     ` Miquel Raynal
2018-04-23 12:49     ` Thomas Petazzoni
2018-04-23 12:49       ` Thomas Petazzoni
2018-04-23 15:15       ` Miquel Raynal
2018-04-23 15:15         ` Miquel Raynal

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