On 12/06/2010 08:01 AM, Avi Kivity wrote:
On 12/06/2010 03:58 PM, Anthony Liguori wrote:
On 12/06/2010 02:35 AM, Avi Kivity wrote:
On 12/06/2010 10:28 AM, Avi Kivity wrote:
I wasn't sure about this. Don't you want EIP to point to the
beginning of the instruction such that the exception will cause
the instruction to restart?
An interrupt causes the HLT to complete execution. APF completion
counts as an interrupt in this case.
btw, it's possible a VMEXIT during HLT returns RIP already advanced
past the HLT instruction. Please check if this is the case.
It's not just possible, it appears to be exactly what happens.
I guess it makes sense that RIP gets advanced before HLT begins to wait.
It does. Good, it simplifies the patch.
Any ideas if the unit test framework can be used to validate this? The
behavior makes perfect sense but I wanted an excuse to play around with
it :-)
Not sure if there's a way to validate VMCS state after a hand crafted exit.
Regards,
Anthony Liguori
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