Thread (11 messages) 11 messages, 4 authors, 2019-11-21

Re: [PATCH v4 0/3] Append new variables to vmcoreinfo (TCR_EL1.T1SZ for arm64 and MAX_PHYSMEM_BITS for all archs)

From: Bhupesh Sharma <hidden>
Date: 2019-11-19 08:29:55
Also in: kexec, linux-arm-kernel, linux-doc, lkml

On Tue, Nov 19, 2019 at 12:03 PM Prabhakar Kushwaha
[off-list ref] wrote:
Hi Akashi,

On Fri, Nov 15, 2019 at 7:29 AM AKASHI Takahiro
[off-list ref] wrote:
quoted
Bhupesh,

On Fri, Nov 15, 2019 at 01:24:17AM +0530, Bhupesh Sharma wrote:
quoted
Hi Akashi,

On Wed, Nov 13, 2019 at 12:11 PM AKASHI Takahiro
[off-list ref] wrote:
quoted
Hi Bhupesh,

Do you have a corresponding patch for userspace tools,
including crash util and/or makedumpfile?
Otherwise, we can't verify that a generated core file is
correctly handled.
Sure. I am still working on the crash-utility related changes, but you
can find the makedumpfile changes I posted a couple of days ago here
(see [0]) and the github link for the makedumpfile changes can be seen
via [1].

I will post the crash-util changes shortly as well.
Thanks for having a look at the same.
Thank you.
I have tested my kdump patch with a hacked version of crash
where VA_BITS_ACTUAL is calculated from tcr_el1_t1sz in vmcoreinfo.
I also did hack to calculate VA_BITS_ACTUAL is calculated from
tcr_el1_t1sz in vmcoreinfo. Now i am getting error same as mentioned
by you in other thread last month.
https://www.mail-archive.com/crash-utility@redhat.com/msg07385.html

how this error was overcome?

I am using
 - crashkernel: https://github.com/crash-utility/crash.git  commit:
babd7ae62d4e8fd6f93fd30b88040d9376522aa3
and
 - Linux: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
commit: af42d3466bdc8f39806b26f593604fdc54140bcb
I will post a formal change for crash-utility shortly that fixes the
same. Right now we are having issues with emails bouncing off
'crash-utility@redhat.com', so my patches sent to the same are in
undelivered state at-the-moment.

For easy testing I will share the link to my github tree (off-line)
[which contains the changes] as well.

Regards,
Bhupesh
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