Instead of using event channels or hypercalls to deal with IPIs and NMIs. Using a hardware virtualized APIC should be faster than using any PV interface, since the VM exit can be avoided. Xen exposes whether the domain is using hardware assisted x{2}APIC emulation in a CPUID bit. Sponsored by: Citrix Systems R&D |
||
---|---|---|
.. | ||
hvm.c | ||
pv.c | ||
xen_apic.c | ||
xen_intr.c |