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Isn't there still a hypervisor present though but rather than the hypervisor running on a general purpose CPU it's running on the Nitro chipset? There's still a
by bogomipz 4y ago
Isn't there still a hypervisor present though but rather than the hypervisor running on a general purpose CPU it's running on the Nitro chipset? There's still a type 1 hypervisor involved no? How else would the hypercalls from the guests work?
- mcspiff 4y agoThere is no hypercalls. Your operating system is running directly on the CPU, same as regular bare metal servers.
- pclmulqdq 4y agoThere are no hypercalls and there is no hypervisor software on machines with this type of virtualization. All virtualization takes place at the network and storage device layer. The Nitro card encapsulates packets from your machine so that they flow on the AWS network correctly, it emulates being an SSD, and it takes care of myriad other peripherals and interfaces that you might expect to have. I think it also has a direct connection to the BMC or uses IPMI to reboot the machine when you are done with it (and another user takes it).
- bogomipz 4y agoAh OK, this is helpful, thanks. The IPMI functionality is certain nice to have.