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xen-devel
[Xen-devel] Re: [PATCH] avoid injection of missed timer interrupts while
On 19 Apr 2006, at 21:02, Kamble, Nitin A wrote:
Hi Keir, Ian,
Today if we stop the guest for debugging using the gdbserver and then
continue with the guest execution the PIT finds that the time has gone
ahead and it missed to inject so many timer ticks, and it tries to
inject all of those one by one. So after the gdb continue command the
guest just handles the timer interrupts for a long time before it can
do anything else.
This patch changes this PIT behavior, if it finds that the guest
is being debugged then it does not try to inject missing timer ticks.
How about not accounting missed ticks across DOMF_ctrl_pause'd periods?
This would mean that missing_ticks would still be accounted for a
DOMF_debugger guest that is not currently being debugged, and will also
nicely handle any other circumstances in which a guest might get paused
by control software for any reason. I suppose it'll be a bigger patch
though.
-- Keir
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