<div dir="ltr"><div><div><div><div>Hello,<br></div>I have sent patch to the maintainers,<br></div>please tell me my patch is correct or there is something wrong<br></div>your response will help us building confidence in device driver development<br></div>Thank GregKH sir <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 9, 2018 at 10:30 PM, <span dir="ltr"><<a href="mailto:kernelnewbies-request@kernelnewbies.org" target="_blank">kernelnewbies-request@kernelnewbies.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send Kernelnewbies mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Re: Outdated URL in Documentation (Gustavo Leite)<br>
2. Re: Outdated URL in Documentation (Greg KH)<br>
3. Re: Outdated URL in Documentation (Gustavo Leite)<br>
4. how to use CONFIG_KEXEC_JUMP options? (Gioh Kim)<br>
<br>
<br>
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<br>
Message: 1<br>
Date: Thu, 8 Feb 2018 19:24:09 -0200<br>
From: Gustavo Leite <<a href="mailto:gustavoleite.ti@gmail.com">gustavoleite.ti@gmail.com</a>><br>
To: Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>><br>
Cc: <a href="mailto:kernelnewbies@kernelnewbies.org">kernelnewbies@kernelnewbies.<wbr>org</a><br>
Subject: Re: Outdated URL in Documentation<br>
Message-ID:<br>
<CAEGv8HhRKLp0jnsBPTRFF=<a href="mailto:BZdvD-ve_OH7rRWKA35SDirEMqmw@mail.gmail.com">BZdvD-<wbr>ve_OH7rRWKA35SDirEMqmw@mail.<wbr>gmail.com</a>><br>
Content-Type: text/plain; charset="UTF-8"<br>
<br>
2018-02-08 11:48 GMT-02:00 Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>>:<br>
> Sure, please feel free to send a patch to do so.<br>
<br>
This is my first time in the process. Please tell me if I'm<br>
doing something wrong.<br>
<br>
I commited the changes on top of Linus (torvalds/linux) tree<br>
using the --signoff flag and generated the patch. Now I must<br>
send it to <a href="mailto:linux-doc@vger.kernel.org">linux-doc@vger.kernel.org</a>?<br>
<br>
- Gustavo Leite<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Fri, 9 Feb 2018 08:19:48 +0100<br>
From: Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>><br>
To: Gustavo Leite <<a href="mailto:gustavoleite.ti@gmail.com">gustavoleite.ti@gmail.com</a>><br>
Cc: <a href="mailto:kernelnewbies@kernelnewbies.org">kernelnewbies@kernelnewbies.<wbr>org</a><br>
Subject: Re: Outdated URL in Documentation<br>
Message-ID: <<a href="mailto:20180209071948.GA8143@kroah.com">20180209071948.GA8143@kroah.<wbr>com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
On Thu, Feb 08, 2018 at 07:24:09PM -0200, Gustavo Leite wrote:<br>
> 2018-02-08 11:48 GMT-02:00 Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>>:<br>
> > Sure, please feel free to send a patch to do so.<br>
><br>
> This is my first time in the process. Please tell me if I'm<br>
> doing something wrong.<br>
><br>
> I commited the changes on top of Linus (torvalds/linux) tree<br>
> using the --signoff flag and generated the patch. Now I must<br>
> send it to <a href="mailto:linux-doc@vger.kernel.org">linux-doc@vger.kernel.org</a>?<br>
<br>
Have you read the "How to write your first kernel patch" tutorial page<br>
on the <a href="http://kernelnewbies.org" rel="noreferrer" target="_blank">kernelnewbies.org</a> site? That should answer all of your<br>
qeustions.<br>
<br>
And yes, you do now need to send the patch to that address, use the<br>
scripts/<a href="http://get_maintainer.pl" rel="noreferrer" target="_blank">get_maintainer.pl</a> tool on your patch to see the proper people to<br>
send it to.<br>
<br>
Good luck!<br>
<br>
greg k-h<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 3<br>
Date: Fri, 9 Feb 2018 08:20:11 -0200<br>
From: Gustavo Leite <<a href="mailto:gustavoleite.ti@gmail.com">gustavoleite.ti@gmail.com</a>><br>
To: Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>><br>
Cc: <a href="mailto:kernelnewbies@kernelnewbies.org">kernelnewbies@kernelnewbies.<wbr>org</a><br>
Subject: Re: Outdated URL in Documentation<br>
Message-ID:<br>
<CAEGv8HgDf6HLm55H2qfENBLJJ+<wbr>SJ=<a href="mailto:bginRoQMF2_-B9aP7CUQA@mail.gmail.com">bginRoQMF2_-B9aP7CUQA@mail.<wbr>gmail.com</a>><br>
Content-Type: text/plain; charset="UTF-8"<br>
<br>
2018-02-09 5:19 GMT-02:00 Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>>:<br>
> Have you read the "How to write your first kernel patch" tutorial page<br>
> on the <a href="http://kernelnewbies.org" rel="noreferrer" target="_blank">kernelnewbies.org</a> site? That should answer all of your<br>
> qeustions.<br>
<br>
I'm going to read it before sending to the list.<br>
<br>
2018-02-09 5:19 GMT-02:00 Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>>:<br>
> Good luck!<br>
<br>
Thank you!<br>
<br>
- Gustavo Leite<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 4<br>
Date: Fri, 9 Feb 2018 12:57:25 +0100<br>
From: Gioh Kim <<a href="mailto:gurugio@gmail.com">gurugio@gmail.com</a>><br>
To: <a href="mailto:kernelnewbies@kernelnewbies.org">kernelnewbies@kernelnewbies.<wbr>org</a><br>
Subject: how to use CONFIG_KEXEC_JUMP options?<br>
Message-ID:<br>
<<a href="mailto:CANc8B5Ohj2BSO8VuZNdtU0d6igy18Uo%2B79Rm8mtnyfy5N8TMqA@mail.gmail.com">CANc8B5Ohj2BSO8VuZNdtU0d6igy1<wbr>8Uo+79Rm8mtnyfy5N8TMqA@mail.<wbr>gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hello,<br>
<br>
"echo c > /proc/sysrq-trigger" generates the kernel dump but it reboots the<br>
system.<br>
I'd like to generate kernel dump without system reboot.<br>
<br>
I found the CONFIG_KEXEC_JUMP option that described as "it is possible to<br>
jump to the kdump kernel and generate kernel dump, and come back to the<br>
operating kernel".<br>
So I enabled CONFIG_KEXEC_JUMP option but I cannot figure out how to come<br>
back to the operating kernel.<br>
<br>
For example, I did following sequences after reading kexec manual page.<br>
<br>
1. kexec --load=/boot/vmlinuz --initrd=/boot/initrd --reuse-cmdline<br>
2. kexec -e<br>
3. now kdump kernel is running<br>
4. kexec --load-jump-back-helper --entry=<ADDRESS><br>
5. kexec -e<br>
<br>
I can jump to kdump kernel with step 1 and step 2.<br>
kexec manual says I need an entry address.<br>
I don't know what address I should use.<br>
<br>
Does anybody know how to use CONFIG_KEXEC_JUMP options and kexec to jump<br>
between kdump kernel and operating kernel?<br>
<br>
<br>
--<br>
<br>
Best regards,<br>
Gioh Kim<br>
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