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From:   Bhupesh Sharma <bhsharma@redhat.com>
Date:   Tue, 19 Nov 2019 13:59:33 +0530
Message-ID: <CACi5LpO_fvzDiXP9+QLga_B7kozRRnE9ix4Xa=xvNx1Kvci=3Q@mail.gmail.com>
Subject: Re: [PATCH v4 0/3] Append new variables to vmcoreinfo (TCR_EL1.T1SZ
 for arm64 and MAX_PHYSMEM_BITS for all archs)
To:     Prabhakar Kushwaha <prabhakar.pkin@gmail.com>
Cc:     AKASHI Takahiro <takahiro.akashi@linaro.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Bhupesh SHARMA <bhupesh.linux@gmail.com>,
        Boris Petkov <bp@alien8.de>, Ingo Molnar <mingo@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jonathan Corbet <corbet@lwn.net>,
        James Morse <james.morse@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Will Deacon <will@kernel.org>,
        Steve Capper <steve.capper@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Paul Mackerras <paulus@samba.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Dave Anderson <anderson@redhat.com>,
        Kazuhito Hagio <k-hagio@ab.jp.nec.com>, x86@kernel.org,
        linuxppc-dev@lists.ozlabs.org,
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On Tue, Nov 19, 2019 at 12:03 PM Prabhakar Kushwaha
<prabhakar.pkin@gmail.com> wrote:
>
> Hi Akashi,
>
> On Fri, Nov 15, 2019 at 7:29 AM AKASHI Takahiro
> <takahiro.akashi@linaro.org> wrote:
> >
> > Bhupesh,
> >
> > On Fri, Nov 15, 2019 at 01:24:17AM +0530, Bhupesh Sharma wrote:
> > > Hi Akashi,
> > >
> > > On Wed, Nov 13, 2019 at 12:11 PM AKASHI Takahiro
> > > <takahiro.akashi@linaro.org> wrote:
> > > >
> > > > 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 yo=
u
> > > 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 see=
n
> > > 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.gi=
t
> 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