From: Rusty Russell <rusty@rustcorp.com.au>

The IDE probe is the slowest part of boot: by suppressing it we cut
boot from from 4.1 seconds to 0.6 seconds.

It turns out that paravirt_disable_iospace() does just this.  Woot!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/lguest/lguest.c |    2 ++
 1 file changed, 2 insertions(+)

diff -puN drivers/lguest/lguest.c~lguest-the-guest-code-suppress-ide-probing drivers/lguest/lguest.c
--- a/drivers/lguest/lguest.c~lguest-the-guest-code-suppress-ide-probing
+++ a/drivers/lguest/lguest.c
@@ -510,6 +510,8 @@ __init void lguest_init(void)
 
 	reserve_top_address(lguest_data.reserve_mem);
 
+	paravirt_disable_iospace();
+
 	cpu_detect(&new_cpu_data);
 	/* Math is always hard! */
 	new_cpu_data.hard_math = 1;
_