From mboxrd@z Thu Jan  1 00:00:00 1970
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
Subject: Re: [RFC] Initial attempt to make ARM use LMB
Date: Fri, 28 May 2010 15:32:07 +0100
Message-ID: <20100528143207.GB25568@n2100.arm.linux.org.uk>
References: <20100325233248.GM24984@n2100.arm.linux.org.uk> <20100522215848.GB29889@n2100.arm.linux.org.uk> <20100526004418.GM9645@atomide.com>
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To: Tony Lindgren <tony@atomide.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, Tomi Valkeinen <tomi.valkeinen@nokia.com>

On Tue, May 25, 2010 at 05:44:18PM -0700, Tony Lindgren wrote:
> Also, the last patch in lmb branch "ARM: use LMB to allocate system
> memory MMIO resource structures" causes both osk5912 and n900
> to hang very early. Maybe I'm missing some patch again..

I'll drop this patch for the time being - we don't have stuff in the
right order yet for lmb_alloc() to work immediately after arm_lmb_init()
with highmem present - lmb_alloc tries to allocate from unmapped or high
memory, which we then use __va() on and referencing the resulting pointer
causes an abort.

However, using lmb_alloc() for the OMAP framebuffers shouldn't be an
issue because the problem only happens if you want to immediately
dereference the memory.