linux-kernel - Re: [PATCH v3 4/6] arm: add early

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Message-ID: <20140110113415.GH27432@n2100.arm.linux.org.uk>
Date:	Fri, 10 Jan 2014 11:34:15 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Mark Salter <msalter@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v3 4/6] arm: add early_ioremap support

On Thu, Jan 09, 2014 at 10:50:31PM -0500, Mark Salter wrote:
> +#define FIXMAP_PAGE_NORMAL (L_PTE_MT_WRITEBACK | L_PTE_YOUNG | L_PTE_PRESENT)
> +#define FIXMAP_PAGE_IO (L_PTE_MT_DEV_NONSHARED | L_PTE_YOUNG | L_PTE_PRESENT)

Doesn't this also want L_PTE_XN for at least IO mappings - maybe for the
normal too if no code is expected to be run from it.

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