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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

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));
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/