On 3/4/22 20:48, isaku.yamahata@xxxxxxxxx wrote:
Implement a VM-scoped subcomment to get system-wide parameters. Although this is system-wide parameters not per-VM, this subcomand is VM-scoped because - Device model needs TDX system-wide parameters after creating KVM VM. - This subcommands requires to initialize TDX module. For lazy initialization of the TDX module, vm-scope ioctl is better.
Since there was agreement to install the TDX module on load, please place this ioctl on the /dev/kvm file descriptor.
At least for SEV, there were cases where the system-wide parameters are needed outside KVM, so it's better to avoid requiring a VM file descriptor.
Thanks, Paolo
