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Re: [Xen-devel] [PATCH RFC 0/9] Basic guest memory introspection support

  • To: Jan Beulich <JBeulich@xxxxxxxx>
  • From: Mihai DonÈu <mdontu@xxxxxxxxxxxxxxx>
  • Date: Wed, 2 Jul 2014 17:50:53 +0300
  • Cc: , RazvanCojocarurcojocaru@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxx
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  • Delivery-date: Wed, 02 Jul 2014 14:52:30 +0000
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On Wed, 02 Jul 2014 15:30:24 +0100 Jan Beulich wrote:
> >>> On 02.07.14 at 15:34, <rcojocaru@xxxxxxxxxxxxxxx> wrote:
> > 4. Add an additional mem_event type, namely a VMCALL event - in
> > order to do its work, our application occasionally triggers VMCALLs
> > in the guest.
> 
> That seems like bending the mem_event interface quite a bit - VMCALL
> isn't really memory (or event) specific.

Indeed. We've used that existing communication channel to carry MSR
change events as well. Maybe in the feature we could rework the whole
thing (mem, MSRs, VMCALL) under a new name, like 'guest events'.

-- 
Mihai DONÈU

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