Matthew Dillon wrote:
I dont know the semantics of MONITOR/MWAIT. What happens if you issue
a MONITOR and the cpu takes an interrupt and issues another MONITOR/MWAIT
before returning to your MWAIT? That will govern whether/how we use the
feature because it will determine whether we need to disable interrupts
while doing the monitor/mwait sequence or not.
As Joerg already wrote, there are many conditions that will trigger the
monitor. Interrupts etc are one of these, so we can execute with
interrupts enabled. I was just curious how we could wait only on a
single variable, even if we are waiting for multiple tokens and the mplock.
cheers
simon
