[Xen-devel] MSR read for vmx guest

["Ling, Xiaofeng" <xiaofeng.ling@xxxxxxxxx>]

XP
XEN) vmx_do_msr_readunknown: ecx=8b, eax=f46, edx=bfe9fbb7
(XEN) VMX_PIT: guest freq in cycles=37985316
(XEN) vmx_do_msr_readunknown: ecx=fe, eax=8054a23c, edx=ed4
(XEN) vmx_do_msr_readunknown: ecx=2ff, eax=0, edx=0
(XEN) vmx_do_msr_readunknown: ecx=179, eax=0, edx=0
(XEN) vmx_do_msr_readunknown: ecx=400, eax=0, edx=0
(XEN) vmx_do_msr_readunknown: ecx=179, eax=68, edx=80e892d8


EL3
(XEN) VMX_PIT: guest freq in cycles=189653190
(XEN) VMX_PIT: guest freq in cycles=37931273
(XEN) vmx_do_msr_readunknown: ecx=179, eax=2f, edx=1
(XEN) vmx_do_msr_readunknown: ecx=c0000080, eax=20100000, edx=1
(XEN) vmx_do_msr_readunknown: ecx=fe, eax=2, edx=0
(XEN) vmx_do_msr_readunknown: ecx=fe, eax=2, edx=0
(XEN) vmx_do_msr_readunknown: ecx=17, eax=f46, edx=bfe9fbb7
(XEN) vmx_do_msr_readunknown: ecx=8b, eax=5, edx=49656e69

The 400 is the extra read for XP, which is IA32_MC0_CTL,for error 
reporting control for some hardware unit.
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