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From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: kdump: need help with kexec -p
Date: Mon, 23 Oct 2017 10:33:03 +0100	[thread overview]
Message-ID: <59EDB74F.4070302@arm.com> (raw)
In-Reply-To: <HE1PR04MB12413AEF2BF54623027FD22A97460@HE1PR04MB1241.eurprd04.prod.outlook.com>

Hi Prabhakar, Akashi,

On 23/10/17 06:37, Prabhakar Kushwaha wrote:
> After further analysis, it is figured out to be a data cache flush issue.   
> 
> After trying below patch(suggested by Takahiro). This problem looks to be resolved for now. 
> 
> ===
> commit 9b492cf58077
> Author: Xunlei Pang <xlpang@redhat.com>
> Date:   Mon May 23 16:24:10 2016 -0700
> 
>     kexec: introduce a protection mechanism for the crashkernel reserved memory
> ===

/me winces.

Yes, without the protection mechanism the code will still compile, and still
work, but be missing the kexec_segment_flush() calls.

This is the problem with backporting stuff. Glad you got it fixed!


Thanks,

James

      reply	other threads:[~2017-10-23  9:33 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-11  9:11 kdump: need help with kexec -p Prabhakar Kushwaha
2017-10-12 11:40 ` James Morse
2017-10-13  8:36   ` AKASHI Takahiro
2017-10-13  9:41   ` Prabhakar Kushwaha
2017-10-13 10:30     ` James Morse
2017-10-13 11:23       ` Prabhakar Kushwaha
2017-10-23  5:37         ` Prabhakar Kushwaha
2017-10-23  9:33           ` James Morse [this message]

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