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git13
2008 Jan 11
4
GP exception on vmxon
...ter protected page mode. In this
step I also set x86_cr0_ne ( cr0.bit5)
4. call start_vmx. This start_vmx function is similar to the one in
xen3.1.0
a. test cpuid with eax = 1. ecx.vmxe(bit5) is 1.
b. Test IA32_FEATURE_CONTROL_MSR, result is 0x05, so bit 0
and bit 2 are both 1.
c. Set cr4.vmxe (bit13) to 1
d. Call vmx_init_vmcs_config(). This function is the same
as in xen3.1.0.
e. Call vmxon, passing it the physical adderss calculated
in step2, using the same op-code as xen
f. stop vmx by calling vmxoff.
Using "while(1)", I traced and found the GP exception happened in step...