[SeaBIOS] [Xen-devel] Ideas for PV on SeaBIOS

Ian Campbell Ian.Campbell at eu.citrix.com
Mon May 23 11:23:24 CEST 2011

On Sat, 2011-05-21 at 09:44 +0100, James Harper wrote:
> Am I understanding right that the OS would need to be completely put on
> hold in the middle of the hypercall while the BIOS took over and did
> it's shutdown sequence, which presumably involves xenstore activity?

Correct, or at least that is one suggestion (probably the front runner
at the moment).

In theory it's no worse than SMM, which Windows presumably already copes
with, but perhaps the latency from having to do the xenstore interaction
is far greater than any real SMM operation.


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