Incorrect definition of hv_enable_vp_vtl in hyperv-tlfs.h

[Alex Ionescu]

Hi,

In arch/x86/include/asm/hyperv-tlfs.h, the following definition at
line 786 (in Linus' tree), I believe to be incorrect.

struct hv_enable_vp_vtl {
    u64                partition_id;
    u32                vp_index;
    union hv_input_vtl        target_vtl; <==== Here

For this hypercall, the TLFS and MSDN documentation states this field
is HV_VTL (u8) and not HV_INPUT_VTL (the bit-field used for targeting
hypercalls to specific target VTLs, which is not the case here).

I realize this is essentially a no-op in code at the moment, but for
correctness should be addressed? I'm happy to make a patch, but wanted
to make sure this isn't a mistake in TLFS/MSDN to begin with
(although, my copy of GDK headers would corroborate it's indeed HV_VTL
as well).

Best regards,
Alex Ionescu