Re: [Xen-devel] [PATCH v2 09/12] x86/vmce, tools/libxl: expose LMCE capability in guest MSR_IA32_MCG_CAP

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

Haozhong Zhang writes ("[PATCH v2 09/12] x86/vmce, tools/libxl: expose LMCE 
capability in guest MSR_IA32_MCG_CAP"):
> If LMCE is supported by host and ' mca_caps = [ "lmce" ] ' is
> present in xl config, the LMCE capability will be exposed in guest
> MSR_IA32_MCG_CAP.  By default, LMCE is not exposed to guest so as to
> keep the backwards migration compatibility.

Excluse my ignorance, but I'm not sure what MCE, MCA and LMCE are.
I'm guessing MC = Machine Check ?

Is MCA "Machine Check Architecture" ?  Is that precisely the machinery
for handling MCEs, or is it something else ?

I think we may need a bit of care in the user-facing interface to try
to make the names and docs comprehensible.

> +=head3 x86
> +
> +=over 4
> +
> +=item B<mca_caps=[ "CAP", "CAP", ... ]>
> +
> +(HVM only) Enable MCA capabilities besides default ones enabled
> +by Xen hypervisor for the HVM domain. "CAP" can be one in the
> +following list:

Would it be incorrect to replace references to "MCA" with "MCE" (eg,
changing "mca_caps" to "mce_caps" here) ?

Ian.

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