Add support for AWS Nitro instances #1365
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wjhun
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Jan 11, 2021
An NVM Express controller provides storage to KVM-based AWS instances (e.g. t3 instances). Also QEMU implements emulation of NVM Express controllers: the relevant command line option is `-device nvme,serial=deadbeef,drive=hd0`. Closes #1316.
The new function pci_teardown_msix() disables a single MSI-X slot that had been enabled via pci_setup_msix(). The new function pci_disable_msix() disables MSI-X altogether on a given PCI device, i.e. undoes what is done by pci_enable_msix(). In addition, pci_enable_msix() has been changed to return the number of available MSI-X slots. These new functionalitites will be used by the AWS ENA driver.
This adds network connectivity to AWS Nitro instances (KVM-based). The code is derived from the Amazon ENA driver for FreeBSD (https://github.com/amzn/amzn-drivers/blob/master/kernel/fbsd/ena). Tested on t3, t3a, c4, c5, c5a, c5d and c5n instances. Closes #1233.
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This PR adds support for running Nanos on AWS instances based on the Nitro hypervisor. Tested on t3, t3a, c4, c5, c5a, c5d and c5n instances.
Closes #1316, closes #1233.