Hello,
I have sent patch to the maintainers,On Fri, Feb 9, 2018 at 10:30 PM, <kernelnewbies-request@xxxxxxxxxxxxxxxxx> wrote:
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Today's Topics:
1. Re: Outdated URL in Documentation (Gustavo Leite)
2. Re: Outdated URL in Documentation (Greg KH)
3. Re: Outdated URL in Documentation (Gustavo Leite)
4. how to use CONFIG_KEXEC_JUMP options? (Gioh Kim)
------------------------------------------------------------ ----------
Message: 1
Date: Thu, 8 Feb 2018 19:24:09 -0200
From: Gustavo Leite <gustavoleite.ti@xxxxxxxxx>
To: Greg KH <greg@xxxxxxxxx>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: Outdated URL in Documentation
Message-ID:
<CAEGv8HhRKLp0jnsBPTRFF=BZdvD-ve_OH7rRWKA35SDirEMqmw@mail. >gmail.com
Content-Type: text/plain; charset="UTF-8"
2018-02-08 11:48 GMT-02:00 Greg KH <greg@xxxxxxxxx>:
> Sure, please feel free to send a patch to do so.
This is my first time in the process. Please tell me if I'm
doing something wrong.
I commited the changes on top of Linus (torvalds/linux) tree
using the --signoff flag and generated the patch. Now I must
send it to linux-doc@xxxxxxxxxxxxxxx?
- Gustavo Leite
------------------------------
Message: 2
Date: Fri, 9 Feb 2018 08:19:48 +0100
From: Greg KH <greg@xxxxxxxxx>
To: Gustavo Leite <gustavoleite.ti@xxxxxxxxx>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: Outdated URL in Documentation
Message-ID: <20180209071948.GA8143@kroah.com >
Content-Type: text/plain; charset=us-ascii
On Thu, Feb 08, 2018 at 07:24:09PM -0200, Gustavo Leite wrote:
> 2018-02-08 11:48 GMT-02:00 Greg KH <greg@xxxxxxxxx>:
> > Sure, please feel free to send a patch to do so.
>
> This is my first time in the process. Please tell me if I'm
> doing something wrong.
>
> I commited the changes on top of Linus (torvalds/linux) tree
> using the --signoff flag and generated the patch. Now I must
> send it to linux-doc@xxxxxxxxxxxxxxx?
Have you read the "How to write your first kernel patch" tutorial page
on the kernelnewbies.org site? That should answer all of your
qeustions.
And yes, you do now need to send the patch to that address, use the
scripts/get_maintainer.pl tool on your patch to see the proper people to
send it to.
Good luck!
greg k-h
------------------------------
Message: 3
Date: Fri, 9 Feb 2018 08:20:11 -0200
From: Gustavo Leite <gustavoleite.ti@xxxxxxxxx>
To: Greg KH <greg@xxxxxxxxx>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: Outdated URL in Documentation
Message-ID:
<CAEGv8HgDf6HLm55H2qfENBLJJ+SJ=bginRoQMF2_-B9aP7CUQA@mail. gmail.com >
Content-Type: text/plain; charset="UTF-8"
2018-02-09 5:19 GMT-02:00 Greg KH <greg@xxxxxxxxx>:
> Have you read the "How to write your first kernel patch" tutorial page
> on the kernelnewbies.org site? That should answer all of your
> qeustions.
I'm going to read it before sending to the list.
2018-02-09 5:19 GMT-02:00 Greg KH <greg@xxxxxxxxx>:
> Good luck!
Thank you!
- Gustavo Leite
------------------------------
Message: 4
Date: Fri, 9 Feb 2018 12:57:25 +0100
From: Gioh Kim <gurugio@xxxxxxxxx>
To: kernelnewbies@kernelnewbies.org
Subject: how to use CONFIG_KEXEC_JUMP options?
Message-ID:
<CANc8B5Ohj2BSO8VuZNdtU0d6igy18Uo+79Rm8mtnyfy5N8TMqA@mail. >gmail.com
Content-Type: text/plain; charset="utf-8"
Hello,
"echo c > /proc/sysrq-trigger" generates the kernel dump but it reboots the
system.
I'd like to generate kernel dump without system reboot.
I found the CONFIG_KEXEC_JUMP option that described as "it is possible to
jump to the kdump kernel and generate kernel dump, and come back to the
operating kernel".
So I enabled CONFIG_KEXEC_JUMP option but I cannot figure out how to come
back to the operating kernel.
For example, I did following sequences after reading kexec manual page.
1. kexec --load=/boot/vmlinuz --initrd=/boot/initrd --reuse-cmdline
2. kexec -e
3. now kdump kernel is running
4. kexec --load-jump-back-helper --entry=<ADDRESS>
5. kexec -e
I can jump to kdump kernel with step 1 and step 2.
kexec manual says I need an entry address.
I don't know what address I should use.
Does anybody know how to use CONFIG_KEXEC_JUMP options and kexec to jump
between kdump kernel and operating kernel?
--
Best regards,
Gioh Kim
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