[Xen-changelog] Hide 64bit-mode feature on i386 hypervisor.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 6ee4c16bfdec487d6b42d93ca88654178047d815
# Parent  9f9984af7f4092dd60cd064a6bc74cfc7f5af46b
Hide 64bit-mode feature on i386 hypervisor.

Signed-off-by: Xiaofeng Ling <xiaofeng.ling@xxxxxxxxx>

diff -r 9f9984af7f40 -r 6ee4c16bfdec xen/arch/x86/vmx.c
--- a/xen/arch/x86/vmx.c        Fri Dec 16 17:54:57 2005
+++ b/xen/arch/x86/vmx.c        Fri Dec 16 17:58:21 2005
@@ -544,6 +544,13 @@
         clear_bit(X86_FEATURE_VMXE & 31, &ecx);
         clear_bit(X86_FEATURE_MWAIT & 31, &ecx);
     }
+#ifdef __i386__
+    else if ( input == 0x80000001 )
+    {
+        /* Mask feature for Intel ia32e or AMD long mode. */
+        clear_bit(X86_FEATURE_LM & 31, &edx);
+    }
+#endif
 
     regs->eax = (unsigned long) eax;
     regs->ebx = (unsigned long) ebx;

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