Re: [PATCH] kvm-vmx: add module parameter to avoid trapping HLT instructions (v2)

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On 12/06/2010 05:07 PM, Anthony Liguori wrote:
Not the user space one. The exit we're interested in is external interrupt, and that one isn't delivered to userspace.

I guess you could have a loop

 1:  hlt
      jmp 1b

and enter it programming a timer to something close, and examine the vcpu state afterwards. However you don't propagate the VMCS halted state to the corresponding kvm state, so there's no way to test it. (a minor bug in your patch)


The activity state doesn't get propagated at all to the kvm state. Can we get into a non-zero activity state today (either SHUTDOWN or WAIT_SIPI)?

No, right now we intercept SHUTDOWN (and turn it back, in qemu, into a RESET), and we emulate all the SIPI stuff. We also intercepted HLT so we couldn't get that activity state either.

--
error compiling committee.c: too many arguments to function

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