linux-kernel - Re: [Xen-devel] [PATCH v2] xen, kdump: handle pv domain in paddr_vmcoreinfo

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Date:   Sat, 15 Apr 2017 16:35:27 +0200
From:   Petr Tesarik <ptesarik@...e.com>
To:     Daniel Kiper <daniel.kiper@...cle.com>
Cc:     Juergen Gross <jgross@...e.com>,
        Daniel Kiper <dkiper@...-space.pl>,
        linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Subject: Re: [Xen-devel] [PATCH v2] xen, kdump: handle pv domain in
 paddr_vmcoreinfo_note()

On Sat, 15 Apr 2017 00:26:05 +0200
Daniel Kiper <daniel.kiper@...cle.com> wrote:

> On Fri, Apr 14, 2017 at 06:53:36PM +0200, Petr Tesarik wrote:
>[...]
> > shifted towards libkdumpfile (https://github.com/ptesarik/libkdumpfile),
> > and this library can open PV guest dump files without any issues.
> 
> Great! AIUI, it reminds my idea to make such think. However, I have not
> have time to make it happen. Is it based on makedumpfile or written from
> scratch? Do you plan support for Linux kernel dumps and/or Xen ones?

Some ideas are borrowed from existing tools (makedumpfile, crash). All
code is written from scratch, however.

The kdumpfile library itself is designed for use with any platform and
operating system. Xen is treated as just another type of operating
system. Based on which OS type is initialized, the library is able to
provide a hypervisor view or a Dom0 view.

There is another project led by Jeff Mahoney, which extends standard
gdb with semantic commands. This project supports only x86_64 Linux
right now. See https://github.com/jeffmahoney/crash-python.

Petr T