[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] machine check support in HVM guests



>Then we support one bank of MSRs, store writes to those (so the contents can
>be read back) but do not act on the writes? I never got the impression
>machine check setup was very complicated.

That may work, but doesn't have to.

(a) There might be (slightly broken) OS assumptions that a minimum number of
banks is available (since the banks serve different units within the CPU, this 
isn't
too unlikely an assumption).

(b) There might (now or in the future) be bits within the registers that have 
side
effects that OSes expect to happen.

So it'll have to be at least a little more complete than what you suggest (and 
I think
it'll end up being not to far from a version as complete as would be reasonable 
in
a virtualized environment). It's doable, certainly.

Jan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.