From: Simon Horman <horms@verge.net.au>
To: Mohan Kumar M <mohan@in.ibm.com>
Cc: ppcdev <linuxppc-dev@ozlabs.org>,
kexec@lists.infradead.org, paulus@samba.org
Subject: Re: [PATCH] Relocatable kdump kernel support in kexec-tools
Date: Wed, 8 Oct 2008 17:11:25 +1100 [thread overview]
Message-ID: <20081008061123.GE22396@verge.net.au> (raw)
In-Reply-To: <20080930125621.GC1945@in.ibm.com>
On Tue, Sep 30, 2008 at 06:26:21PM +0530, Mohan Kumar M wrote:
> Relocatable kdump kernel support in kexec-tools
>
> This patch adds relocatable kernel support for kdump in the kexec-tools
> code. A signature (0xfeed1234) is passed in r6 from panic code to the
> purgatory code through kexec_sequence function. The signature is used to
> differentiate between relocatable kdump kernel and non-kdump kernels.
>
> The purgatory code compares the signature and sets the __kdump_flag in
> head_64.S by using the offset with respect to next kernel load address.
> During the boot up, kernel code checks __kdump_flag and if it is set, the
> kernel will behave as relocatable kdump kernel.
Thanks Mohan, applied.
--
Simon Horman
VA Linux Systems Japan K.K., Sydney, Australia Satellite Office
H: www.vergenet.net/~horms/ W: www.valinux.co.jp/en
prev parent reply other threads:[~2008-10-08 6:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-30 12:56 [PATCH] Relocatable kdump kernel support in kexec-tools Mohan Kumar M
2008-10-08 6:11 ` Simon Horman [this message]
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