linux-kernel - Re: [PATCH 1/2 v6] kdump: add the vmcoreinfo documentation

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Date:   Mon, 14 Jan 2019 15:49:14 -0500 (EST)
From:   Dave Anderson <anderson@...hat.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Kazuhito Hagio <k-hagio@...jp.nec.com>,
        Lianbo Jiang <lijiang@...hat.com>,
        linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
        tglx@...utronix.de, mingo@...hat.com, x86@...nel.org,
        akpm@...ux-foundation.org, bhe@...hat.com, dyoung@...hat.com,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/2 v6] kdump: add the vmcoreinfo documentation



----- Original Message -----
> On Mon, Jan 14, 2019 at 03:26:32PM -0500, Dave Anderson wrote:
> > No.  It needs *both* the vmlinux file and the vmcore file in order to read
> > kernel
> > virtual memory, so just having a kernel virtual address is insufficient.
> > 
> > So it's a chicken-and-egg situation.  This particular --osrelease option is used
> > to determine *what* vmlinux file would be required for an actual crash analysis
> > session.
> 
> Ok, that makes sense. I could've used that explanation when reviewing
> the documentation. Do you mind skimming through this:
> 
> https://lkml.kernel.org/r/20190111145650.GG4729@zn.tnic
> 
> in case we've missed explaining relevant usage - like that above - of
> some of the vmcoreinfo members?

Yeah, I've been watching the thread, and the document looks fine to me.
It's just that when I saw the discussion of this one being removed that
I felt the need to respond...  ;-)

Dave