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Date: Mon, 21 Oct 2019 18:22:02 +0800
From: youling 257 <>
To: Lukas Odzioba <>
Subject: Re: How to get the crash dump if system hangs?

When add cmdline memmap=1M!2047M, the iomem will be 7ef00001-7fefffff : RAM
buffer 7ff00000-7fffffff : Persistent Memory (legacy) 7ff00000-7ff00fff :
so ramoops.mem_address=0x7ff00000.

Lukas Odzioba <> 于 2019年10月21日周一 下午4:39写道:

> youling257 <> wrote:
> >
> > I don't know my ramoops.mem_address, please help me.
> >
> > what is ramoops.mem_address?
> It is a Linux kernel parameter, see documentation below:
> It requires memory which can hold data between reboots, so i'm not
> sure how it will suit your case.
> Thanks,
> Lukas

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