linux-kernel - Re: [PATCH] x86, add hypervisor name to dump

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Message-ID: <20121030210423.GA8024@liondog.tnic>
Date:	Tue, 30 Oct 2012 22:04:23 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Prarit Bhargava <prarit@...hat.com>
Cc:	linux-kernel@...r.kernel.org, Avi Kivity <avi@...hat.com>,
	Gleb Natapov <gleb@...hat.com>,
	Alex Williamson <alex.williamson@...hat.com>,
	Marcelo Tostatti <mtosatti@...hat.com>,
	Ingo Molnar <mingo@...hat.com>, kvm@...r.kernel.org,
	x86@...nel.org
Subject: Re: [PATCH] x86, add hypervisor name to dump_stack() [v4]

On Tue, Oct 30, 2012 at 04:26:33PM -0400, Prarit Bhargava wrote:
> Debugging crash, panics, stack trace WARN_ONs, etc., from both virtual and
> bare-metal boots can get difficult very quickly.  While there are ways to
> decipher the output and determine if the output is from a virtual guest,
> the in-kernel hypervisors now have a single registration point
> and set x86_hyper.  We can use this to output additional debug
> information during a panic/oops/stack trace.
> 
> Signed-off-by: Prarit Bhargava <prarit@...hat.com>
> Cc: Avi Kivity <avi@...hat.com>
> Cc: Gleb Natapov <gleb@...hat.com>
> Cc: Alex Williamson <alex.williamson@...hat.com>
> Cc: Marcelo Tostatti <mtosatti@...hat.com>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: kvm@...r.kernel.org
> Cc: x86@...nel.org
> 
> [v2]: Modifications suggested by Ingo and added changes for similar output
>       from process.c
> 
> [v3]: Unify common code and move output to end of line

Looks useful.

Acked-by: Borislav Petkov <bp@...en8.de>

-- 
Regards/Gruss,
    Boris.
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