linux-kernel - Re: [PATCH] Handle instruction cache maintenance fault properly

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Message-ID: <7529.1273503128@localhost>
Date:	Mon, 10 May 2010 10:52:08 -0400
From:	Valdis.Kletnieks@...edu
To:	"Kirill A. Shutemov" <kirill@...temov.name>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Siarhei Siamashka <siarhei.siamashka@...ia.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Aaro Koskinen <aaro.koskinen@...ia.com>
Subject: Re: [PATCH] Handle instruction cache maintenance fault properly

On Mon, 10 May 2010 16:34:57 +0300, "Kirill A. Shutemov" said:

> It looks like cache maintenance fault was introduced in ARMv6.
> 
> So, what is the right way to fix it? Something like:
> 
> #if __LINUX_ARM_ARCH__ < 6
>         { do_bad,               SIGBUS,  0,             "external

This would need to be a runtime test, no?  Or does LINUX_ARM_ARCH not allow
it to run on other arch levels? (i.e. can an ARM kernel boot for v5 and v6?)

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