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From: "Jan Beulich" <jbeulich@novell.com>
To: "Jeremy Fitzhardinge" <jeremy@xensource.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: CONFIG_XEN dependencies
Date: Tue, 23 Oct 2007 11:03:04 +0100	[thread overview]
Message-ID: <471DE2F8.76E4.0078.0@novell.com> (raw)

Jeremy,

CONFIG_XEN (in 2.6.23) depends on X86_CMPXCHG and X86_TSC. This
precludes enabling the option in kernels using M386, M486, or M586, despite
the fact that the detection code doesn't need these features and if Xen is
present the features are implicitly there. At least the X86_TSC dependency
can thus be dropped in my opinion, which would then only exclude M386
kernels. (Dropping X86_CMPXCHG may yield build problems, but could
perhaps also be eliminated by forcibly #define-ing it in the relevant source
files.)

Jan


             reply	other threads:[~2007-10-23 10:01 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-23 10:03 Jan Beulich [this message]
2007-10-23 18:09 ` Jeremy Fitzhardinge
2007-10-24  8:31   ` Jan Beulich
2007-10-24 19:00     ` Jeremy Fitzhardinge
2007-10-24 19:53       ` Matt Mackall
2007-10-24 19:56         ` Jeremy Fitzhardinge

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