[Xen-ia64-devel][PATCH] Fix Windows Timer stop issue.

["Xu, Anthony" <anthony.xu@xxxxxxxxx>]

When doing HCT testing on Guest Windows, Windows Timer might stop, if
there is no mouse activity.

When implementing vhpi acceleration, I didn't think of below situation.
Windows uses "epc" instruction to implement system call like Linux. In a
very small code sequence including "epc" instruction, if there is an
external interrupt, Windows will defer handling this external interrupt
by rfi with ipsr.i=0.


Signed-off-by, Anthony Xu < anthony.xu@xxxxxxxxx >

Anthony

Attachment: windows_timer_stop2.patch
Description: windows_timer_stop2.patch

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