Re: Re: [RFC] RAS(Part II)--MCA enalbing in XEN

[Frank van der Linden <Frank.Vanderlinden@Sun.COM>]

Kleen, Andi wrote:
>> MCA information is highly specific to the hardware.
> 
> Actually Intel has architectural machine checks and except for
> some optional addon information explicitely marked it's all architectural
> (as in defined to stay the same going forward)

True, I probably expressed myself poorly here. I meant to say: it's a 
physical hardware error, and in an unmodified virtualized environment 
the information about the physical hardware isn't there.

> For DomU translation of the address is needed, that's correct.
> For Dom0 logging physical is good because the logging tools
> might need that.

Right. As far as I understand it, this patch proposes to deliver the 
actual physical information to dom0 via the existing vIRQ mechanism, 
while the vMCE mechanism delivers virtualized info to any guest (both 
dom0 and domU).

- Frank