search for: alloc_direct_apic_vector

I am adding interrupt support for LWP, whose spec is available at http://support.amd.com/us/Processor_TechDocs/43724.pdf. Basically OS can specify an interrupt vector in LWP_CFG MSR; the interrupt will be triggered when event buffer overflows. For HVM guests, I want to re-inject this interrupt back into the guest VM. Here is one idea similar to virtualized PMU: It first registers a special

From: Yang Zhang <yang.z.zhang@Intel.com> The follwoing patches are adding the Posted Interrupt supporting to Xen: Posted Interrupt allows vAPIC interrupts to inject into guest directly without any vmexit. - When delivering a interrupt to guest, if target vcpu is running, update Posted-interrupt requests bitmap and send a notification event to the vcpu. Then the vcpu will handle this