linux-kernel - Re: CONFIG_XEN dependencies

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Message-ID: <20071024195348.GM17536@waste.org>
Date:	Wed, 24 Oct 2007 14:53:48 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
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

On Wed, Oct 24, 2007 at 12:00:43PM -0700, Jeremy Fitzhardinge wrote:
> Jan Beulich wrote:
> > The specific goal is to be able to enable the XEN option in our native kernel,
> > which gets configured with M586. So we could live with XEN depending on
> > X86_CMPXCHG, but would definitely need the dependency on X86_TSC
> > dropped. Nevertheless I'd favor even X86_CMPXCHG dropped unless that
> > causes unresolvable (or difficult to resolve) problems.
> 
> Seems reasonable.  Do you have a patch?

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.

-- 
Mathematics is the supreme nostalgia of our time.
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