linux-kernel - Re: Linux kernel crash dumps for ARM

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Message-ID: <20100105220216.GA8630@verge.net.au>
Date:	Wed, 6 Jan 2010 09:02:16 +1100
From:	Simon Horman <horms@...ge.net.au>
To:	Russell King <rmk+lkml@....linux.org.uk>
Cc:	linux-kernel@...r.kernel.org, Paul Mundt <lethal@...ux-sh.org>,
	Kexec Mailing List <kexec@...ts.infradead.org>,
	Venkappa Mala <Venkappa.Mala@...infotech.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: Linux kernel crash dumps for ARM

On Tue, Jan 05, 2010 at 07:00:47PM +0000, Russell King wrote:
> On Tue, Jan 05, 2010 at 08:16:28PM +1100, Simon Horman wrote:
> > To add to this, my understanding is that kexec support varies across
> > different ARM platforms - that is to say, it works on some and fails on
> > others. While this seems to be slowly improving, I'm also aware of any list
> > of what is supported and what isn't.
> 
> I'm unaware of that; the only area of weakness with kexec that I'm
> aware of is when the ARMv7 processor support didn't implement the
> necessary code to bring the caches/mmu/tlbs into a safe state for
> software-reboot, which is also what's required by kexec.

Ok, I could well be mistaken and its just ARMv7 that has a few issues
at this time.

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