On 17/06/16 13:08, Andre Przywara wrote: > LPIs are dynamically created (mapped) at guest runtime and their > actual number can be quite high, but is mostly assigned using a very > sparse allocation scheme. So arrays are not an ideal data structure > to hold the information. > We use an RCU protected list to hold all mapped LPIs. vgic_its_get_lpi() > iterates the list using RCU list primitives, so it's safe to be called > from an non-preemptible context like the KVM exit/entry path. > Also we store a pointer to that struct vgic_irq in our struct its_itte, > so we can easily access it. > Eventually we call our new vgic_its_get_lpi() from vgic_get_irq(), so > the VGIC code gets transparently access to LPIs. > > Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx> I'm skipping the review of this particular patch until you've switched to the kref API. Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
