freebsd-nq/sys/xen/evtchn
Adrian Chadd 946a48449b Make ipi_cpu() function as intended.
IPI's in Xen are implemented through hypervisor event channels.
The MP code creates a pair of IRQs for each base IPI per CPU
(one for IPI function dispatch calls, one for IPI bitmap dispatch calls.)
Using PCPU_GET() was returning the IRQ of the IPI handler for the
current CPU; thus calls to ipi_cpu() were sending itself a message.
Instead, looking up the IPI in the target CPU ipi-to-irq map is needed.

Note: This doesn't fix Xen SMP (far from it!) but it at least
sends IPI's to the right places. Next - sending IPIs..

PR:	135069
2009-05-30 08:53:13 +00:00
..
evtchn_dev.c Merge in support for Xen HVM on amd64 architecture. 2009-03-11 15:30:12 +00:00
evtchn.c Make ipi_cpu() function as intended. 2009-05-30 08:53:13 +00:00