Hello, I have sent patch to the maintainers, please tell me my patch is correct or there is something wrong your response will help us building confidence in device driver development Thank GregKH sir On Fri, Feb 9, 2018 at 10:30 PM, <kernelnewbies-request@kernelnewbies.org> 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 Re: Outdated URL in Documentation (Gustavo Leite) 2. Re: Outdated URL in Documentation (Greg KH) 3. Re: Outdated URL in Documentation (Gustavo Leite) 4.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)
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Message: 1 Date: Thu, 8 Feb 2018 19:24:09 -0200 From: Gustavo Leite <gustavoleite.ti@gmail.com> To: Greg KH <greg@kroah.com> Cc: kernelnewbies@kernelnewbies.org Subject: Re: Outdated URL in Documentation Message-ID: 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@kroah.com>:
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@vger.kernel.org?
- Gustavo Leite
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Message: 2 Date: Fri, 9 Feb 2018 08:19:48 +0100 From: Greg KH <greg@kroah.com> To: Gustavo Leite <gustavoleite.ti@gmail.com> Cc: kernelnewbies@kernelnewbies.org Subject: Re: Outdated URL in Documentation Message-ID: 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@kroah.com>:
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@vger.kernel.org?
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
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Message: 3 Date: Fri, 9 Feb 2018 08:20:11 -0200 From: Gustavo Leite <gustavoleite.ti@gmail.com> To: Greg KH <greg@kroah.com> 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@kroah.com>:
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@kroah.com>:
Good luck!
Thank you!
- Gustavo Leite
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Message: 4 Date: Fri, 9 Feb 2018 12:57:25 +0100 From: Gioh Kim <gurugio@gmail.com> 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?
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Best regards, Gioh Kim