linux-kernel - Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init!

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Message-Id: <1247740798.26074.29.camel@pc1117.cambridge.arm.com>
Date:	Thu, 16 Jul 2009 11:39:58 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Dirk Behme <dirk.behme@...glemail.com>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Sudeep K N <sudeepholla.maillist@...il.com>,
	linux-arm-kernel@...ts.arm.linux.org.uk, drzeus-mmc@...eus.cx,
	linux-kernel@...r.kernel.org
Subject: Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init!

On Mon, 2009-07-13 at 17:44 +0200, Dirk Behme wrote:
> Catalin Marinas wrote:
> > The patch below appears to solve the problem with CompactFlash using
> > pata_platform (I cc'ed linux-ide since the patch changes their code).
> > The patch only handles the read case but similarly it may need to handle
> > the write case if D-cache aliasing between user and kernel mappings
> > exists.
> > 
> > For the USB mass storage, I haven't yet figured out the best place to
> > call flush_dcache_page().
> 
> Any news regarding USB mass storage on ARM MPCore? Else this would 
> mean that USB mass storage (USB stick, USB disk) formatted with 
> ext2/3/4 wouldn't work with MPCore?

On the ARM RealView boards, the USB is PIO rather than DMA-capable. I
posted this patch on the list here (but have to follow up with the
maintainers):

http://lists.arm.linux.org.uk/lurker/message/20090710.130032.bfb8b218.en.html

-- 
Catalin

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