[Xen-devel] RE: Is hypercall_hvm_op in changeset 11060 effective?

["Li, Xin B" <xin.b.li@xxxxxxxxx>]

>> hypercall_hvm_op in changeset 11060 seem not effective, should we use
>> vmmcall instead since hvmloader is running in none-root vmcs mode?
>
>What do you think is the problem? Init_hypercall() sets up a hypercall
>transfer page suitable for the architecture you are running on 
>(so it uses
>vmmcall when running on VT-x). There are a few example 
>hypercalls at the end
>of that function which do work properly.
>

Just found the code in hvmloader.c seems not work.
        hvm_param.domid = DOMID_SELF;
        hvm_param.index = HVM_PARAM_APIC_ENABLED;
        if (!hypercall_hvm_op(HVMOP_get_param, &hvm_param) &&
hvm_param.value)
                create_mp_tables();

Need more investigation.
Thanks
-Xin

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