linux-kernel - [PATCH] xen: disable all non-virtual devices

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Date:	Tue, 05 Jun 2007 18:23:54 -0700
From:	Jeremy Fitzhardinge <jeremy@...source.com>
To:	Andi Kleen <ak@...e.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Virtualization Mailing List <virtualization@...ts.osdl.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: [PATCH] xen: disable all non-virtual devices

A domU Xen environment has no non-virtual drivers, so make sure
they're all disabled at once.  This noticeably speeds up boot time.

Signed-off-by: Jeremy Fitzhardinge <jeremy@...source.com>
Cc: Rusty Russell <rusty@...tcorp.com.au>

diff -r c79da0042c7d arch/i386/xen/setup.c
--- a/arch/i386/xen/setup.c	Tue Jun 05 18:17:30 2007 -0700
+++ b/arch/i386/xen/setup.c	Tue Jun 05 18:17:59 2007 -0700
@@ -93,4 +93,6 @@ void __init xen_arch_setup(void)
 	/* fill cpus_possible with all available cpus */
 	xen_fill_possible_map();
 #endif
+
+	paravirt_disable_iospace();
 }


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