[PATCH] Xenoprofile: Disable IBS on 32 bit

[PATCH] Xenoprofile: Disable IBS on 32 bit

[Wei Wang2]

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Hi,
Extended PCI configuration space is not accessible on 32 bit systems. This 
patch disables IBS feature on 32 bit to avoid IBSCTL(0x1cc) accesses. 
Thanks,
Wei

Signed-off-by: Wei Wang <wei.wang2@amd.com>
-- 
AMD GmbH, Germany
Operating System Research Center

Legal Information:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34
85609 Dornach b. München

Geschäftsführer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis München
Registergericht München, HRB Nr. 43632

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diff -r 8992134dcfd0 xen/arch/x86/oprofile/op_model_athlon.c
--- a/xen/arch/x86/oprofile/op_model_athlon.c	Wed Aug 04 19:24:17 2010 +0100
+++ b/xen/arch/x86/oprofile/op_model_athlon.c	Fri Aug 06 14:58:53 2010 +0200
@@ -475,6 +475,9 @@ static int init_ibs_nmi(void)
 
 static u32 get_ibs_caps(void)
 {
+#ifdef	CONFIG_X86_32
+	return 0;
+#else
 	unsigned int max_level;
 
 	if (!boot_cpu_has(X86_FEATURE_IBS))
@@ -491,6 +494,7 @@ static u32 get_ibs_caps(void)
 		return IBS_CAPS_AVAIL;
 
 	return ibs_caps;
+#endif
 }
 
 u32 ibs_init(void)

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