search for: msi_vector_clean

Currently the vector is not freed for MSI interrupt, the three patches fix the issue. The first patch(pirq.patch) move the get_free_pirq/map(unmap)_domain_pirq from arch/x86/physdev.c to arch/x86/irq.c, since that should be part of irq managment, no logic changes. The second patch(msi_vector_clean.patch) free the vector when the pirq is unmapped or when domain destroy. One thing need notice for this patch is, current code will not assign FIRST_DYNAMIC_VECTOR in the first round of assign_irq_vector since the current_vector is added immediately, I didn''t try to fix it, since now it ca...