On 17.08.2016 17:36, Jan Kiszka wrote: > On 2016-08-15 14:37, Paolo Bonzini wrote: >> On 15/08/2016 13:51, Alexander Popov wrote: >>> It seems to me that the idea of an irq_domain for interrupts injected >>> by a hypervisor is quite generic. >> >> True, but all of Xen, KVM and VMware use PCI devices for this. > > So does Jailhouse. We have to have the code anyway because we need to > keep Linux alive after taking over control. Thus it is actually easier > to reuse the same logic for para-virtualized domains (non-root cells). Hello, Jan! Yes, I see. I can only say that Xen, KVM, VMware and Jailhouse happily use hypercalls, which are a valid interface between a hypervisor and its guests. Positive Technologies hypervisor called Gvandra (named after a big Caucasus mountain) tries to use only the hypercalls and avoid PCI device emulation to become slimmer. Best regards, Alexander -- 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
