OK, some more data.
in a timer interrupt (first and only) I see this:
xentimerread: hz 0 cpu_hz 598736060 shadow_system_time 333ac5398180
settin timer to 0x333bfecedc00
So the time is 333ac5398180, I set the timer to 0x333bfecedc00 via
HYPERVISOR_set_timer_op. I'm assuming that once the system time gets to
0x333bfecedc00 then I'll get an interrupt.
Now we wait ... in this loop, I'm print time and the values of the mask,
the pending, and the pending_sel values in shared info:
ipending: @0x333bfe262600 islo 0x0, pending 0x0, pending_sel 0x0
ipending: @0x333bfebebc80 islo 0x0, pending 0x0, pending_sel 0x0
ipending: @0x333bff575300 islo 0x0, pending 0x0, pending_sel 0x0
ipending: @0x333bffefe980 islo 0x0, pending 0x0, pending_sel 0x0
ipending: @0x333c00888000 islo 0x0, pending 0x0, pending_sel 0x0
note that there is no changing in pending as we cross the time for an
interrupt to have happened. I would expect to see pending to get set to
some non-zero value once the system time had passed 0x333bfecedc00.
My reading of HYPERVISOR_set_timer_op is that you set an absolute value,
and when the time is > than that value, you get called with an interrupt;
is that wrong?
ron
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