linux-kernel - Re: CONFIG_XEN dependencies

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Message-ID: <471FA379.6070400@goop.org>
Date:	Wed, 24 Oct 2007 12:56:41 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Matt Mackall <mpm@...enic.com>
CC:	Jan Beulich <jbeulich@...ell.com>,
	Jeremy Fitzhardinge <jeremy@...source.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: CONFIG_XEN dependencies

Matt Mackall wrote:
> You might want a runtime check for these features as a future Xen
> hypervisor might eliminate these requirements.
>
> Ok, not really likely, but still possible.
>   

Seems pretty unlikely. All existing guests assume cmpxchg is available,
and the hypercall ABI depends on the tsc.

J
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