linux-kernel - [patch] x86: Kill bogus MTRR warning when running under vmware

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Message-ID: <20081031170355.5368be60@redhat.com>
Date:	Fri, 31 Oct 2008 17:03:55 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Yinghai Lu <yhlu.kernel@...il.com>, linux-kernel@...r.kernel.org
Subject: [patch] x86: Kill bogus MTRR warning when running under vmware

x86: Kill bogus MTRR warning when running under vmware

The warning is suppressed when running under KVM, but VMware
guests also have empty MTRRs.

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=468845

Signed-off-by: Chuck Ebbert <cebbert@...hat.com>

Index: linux-2.6.27.noarch/arch/x86/kernel/cpu/mtrr/main.c
===================================================================
--- linux-2.6.27.noarch.orig/arch/x86/kernel/cpu/mtrr/main.c
+++ linux-2.6.27.noarch/arch/x86/kernel/cpu/mtrr/main.c
@@ -1495,11 +1495,8 @@ int __init mtrr_trim_uncached_memory(uns
 	}
 
 	/* kvm/qemu doesn't have mtrr set right, don't trim them all */
-	if (!highest_pfn) {
-		WARN(!kvm_para_available(), KERN_WARNING
-				"WARNING: strange, CPU MTRRs all blank?\n");
+	if (!highest_pfn)
 		return 0;
-	}
 
 	/* check entries number */
 	memset(num, 0, sizeof(num));
--
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