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Message-ID: <CAOzgRdbFc_WJDaOg5vdq5Y=nL+vyApCDCGFb-AUo6f=GRSDQWQ@mail.gmail.com>
Date: Mon, 21 Oct 2019 18:22:02 +0800
From: youling 257 <youling257@...il.com>
To: Lukas Odzioba <lukas.odzioba@...il.com>
Cc: keescook@...omium.org, kernel-hardening@...ts.openwall.com,
munisekharrms@...il.com
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 :
MSFT0101:00,
so ramoops.mem_address=0x7ff00000.
Lukas Odzioba <lukas.odzioba@...il.com> 于 2019年10月21日周一 下午4:39写道：
> youling257 <youling257@...il.com> 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:
> https://www.kernel.org/doc/Documentation/admin-guide/ramoops.rst
>
> 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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