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[Xen-devel] [PATCH] [VT] Hide VMX cpu feature from unmodified Guests
| To: | "xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] [PATCH] [VT] Hide VMX cpu feature from unmodified Guests |
| From: | "Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx> |
| Date: | Tue, 11 Oct 2005 17:04:26 -0700 |
| Cc: | Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx> |
| Delivery-date: | Wed, 12 Oct 2005 00:01:58 +0000 |
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| Thread-topic: | [PATCH] [VT] Hide VMX cpu feature from unmodified Guests |
Keir, Ian,
This small patch hides VMX from the unmodified (vmx) guests.
Please apply.
# HG changeset patch
# User Nitin A Kamble <nitin.a.kamble@xxxxxxxxx>
# Node ID ff1112544420b960908884b84f99f6760a1a0b7e
# Parent 00037ba13f0bb8efe4b2c3efe40200eac21c68dd
Hide the VMX cpu feature from unmodified Guests.
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@xxxxxxxxx>
diff -r 00037ba13f0bb8efe4b2c3efe40200eac21c68dd -r
ff1112544420b960908884b84f99f6760a1a0b7e xen/arch/x86/vmx.c
--- a/xen/arch/x86/vmx.c Tue Oct 4 17:23:58 2005
+++ b/xen/arch/x86/vmx.c Tue Oct 11 23:21:17 2005
@@ -472,6 +472,7 @@
#endif
/* Unsupportable for virtualised CPUs. */
+ clear_bit(X86_FEATURE_VMXE & 31, &ecx);
clear_bit(X86_FEATURE_MWAIT & 31, &ecx);
}
Thanks & Regards,
Nitin
------------------------------------------------------------------------
-----------
Open Source Technology Center, Intel Corp
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