From: Shane Wang <shane.wang@intel.com>
To: avi@redhat.com, mtosatti@redhat.com
Cc: jan.kiszka@siemens.com, kvm@vger.kernel.org,
joseph.cihula@intel.com, shane.wang@intel.com
Subject: [PATCH]KVM: VMX: Inform user about INTEL_TXT dependency
Date: Wed, 17 Nov 2010 11:40:17 +0800 [thread overview]
Message-ID: <1289965217-14270-1-git-send-email-shane.wang@intel.com> (raw)
Inform user to either disable TXT in the BIOS or do TXT launch with tboot before enabling KVM since some BIOSes do not set FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX bit when TXT is enabled.
Signed-off-by: Shane Wang <shane.wang@intel.com>
---
arch/x86/kvm/vmx.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -r b1a2deff4c64 arch/x86/kvm/vmx.c
--- a/arch/x86/kvm/vmx.c Wed Nov 17 12:47:42 2010 -0500
+++ b/arch/x86/kvm/vmx.c Wed Nov 17 12:49:52 2010 -0500
@@ -1306,8 +1306,11 @@
&& tboot_enabled())
return 1;
if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
- && !tboot_enabled())
+ && !tboot_enabled()) {
+ printk(KERN_WARNING "kvm: disable TXT in the BIOS or "
+ " activate TXT before enabling KVM\n");
return 1;
+ }
}
return 0;
next reply other threads:[~2010-11-17 3:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-17 3:40 Shane Wang [this message]
2010-11-17 7:56 ` [PATCH]KVM: VMX: Inform user about INTEL_TXT dependency Jan Kiszka
2010-11-18 0:35 ` Wang, Shane
2010-11-18 15:28 ` Marcelo Tosatti
-- strict thread matches above, loose matches on Subject: below --
2010-11-14 9:18 [PATCH] KVM: " Jan Kiszka
2010-11-14 10:30 ` Avi Kivity
2010-11-14 10:41 ` Jan Kiszka
2010-11-14 11:02 ` Avi Kivity
2010-11-16 4:48 ` Wang, Shane
2010-11-16 10:22 ` Jan Kiszka
2010-11-16 13:02 ` Cihula, Joseph
2010-11-16 13:19 ` Jan Kiszka
2010-11-17 1:30 ` Wang, Shane
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