linux-kernel - Re: [PATCH v2 02/31] arm64: Kernel booting and initialisation

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Message-ID: <20120817085615.GO11011@atomide.com>
Date:	Fri, 17 Aug 2012 01:56:15 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	linux-arch@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v2 02/31] arm64: Kernel booting and initialisation

* Catalin Marinas <catalin.marinas@....com> [120814 11:00]:
> +3. Decompress the kernel image
> +------------------------------
> +
> +Requirement: OPTIONAL
> +
> +The AArch64 kernel does not provide a decompressor and therefore
> +requires gzip decompression to be performed by the boot loader if the
> +default Image.gz target is used.  For bootloaders that do not implement
> +this requirement, the larger Image target is available instead.

Maybe add something here about why AArch64 does not provide a
decompressor? That's something everybody will wonder while reading
this part.

> +- Caches, MMUs
> +  The MMU must be off.
> +  Instruction cache may be on or off.
> +  Data cache must be off and invalidated.

External caches must be configured by bootloader but set to disabled
state?

Other than that:

Acked-by: Tony Lindgren <tony@...mide.com>
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