Displaying 1 result from an estimated 1 matches for "bit5".
Did you mean:
bit
2008 Jan 11
4
GP exception on vmxon
...ns.
Could anybody help me on this? The following is the context
1. After booting up to the program, I disable A20M.
2. allocate a 4kb-aligned vmxon region and calculate its physical
address.
3. setup identity page table and enter 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...