Messages in this thread | | | Date | Thu, 07 May 2009 22:26:03 +0300 | From | Avi Kivity <> | Subject | Re: [RFC PATCH 0/3] generic hypercall support |
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Chris Wright wrote: > * Gregory Haskins (ghaskins@novell.com) wrote: > >> Chris Wright wrote: >> >>> * Avi Kivity (avi@redhat.com) wrote: >>> >>>> Gregory Haskins wrote: >>>> >>>>> Cool, I will code this up and submit it. While Im at it, Ill run it >>>>> through the "nullio" ringer, too. ;) It would be cool to see the >>>>> pv-mmio hit that 2.07us number. I can't think of any reason why this >>>>> will not be the case. >>>>> >>>>> >>>> Don't - it's broken. It will also catch device assignment mmio and >>>> hypercall them. >>>> >>> Not necessarily. It just needs to be creative w/ IO_COND >>> >> Hi Chris, >> Could you elaborate? How would you know which pages to hypercall and >> which to let PF? >> > > Was just thinking of some ugly mangling of the addr (I'm not entirely > sure what would work best). >
I think we just past the "too complicated" threshold.
-- Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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