From: Tim Deegan <tim@xen.org>
To: palutke.ralph@gmx.de
Cc: xen-devel@lists.xen.org
Subject: Re: how to check for already existing hypervisor?
Date: Mon, 25 Jun 2012 10:07:46 +0100 [thread overview]
Message-ID: <20120625090746.GD1488@ocelot.phlegethon.org> (raw)
In-Reply-To: <20120621004447.GA12981@mean_maschine.fritz.box>
At 02:44 +0200 on 21 Jun (1340246688), palutke.ralph@gmx.de wrote:
> Hi guys,
>
> let me shortly introduce myself. I'm a student and recently work on my bachelor thesis. My goal is to write a little hypervisor.
> I'm not quite sure if this is the right mailing list, but i guess you'll gonna tell me.
> i have two quick questions:
>
> 1. before i can use the vmxon instruction i do have to set vmxe flag in cr4 register. but what if some hypervisor is already running? is there a way to check
> if one is running??
A lot of hypervisors report their presence in CPUID leaves - have a look
at xen-detect in the tools/ directory for how to spot Xen.
Tim.
next prev parent reply other threads:[~2012-06-25 9:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-21 0:44 how to check for already existing hypervisor? palutke.ralph
2012-06-25 9:07 ` Tim Deegan [this message]
-- strict thread matches above, loose matches on Subject: below --
2012-06-20 23:00 palutke.ralph
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