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* add APIs for detecting confidential virtualizationDaniel P. Berrangé2023-07-061-0/+25
This code uses various CPUID checks to be able to identify * AMD SEV * AMD SEV-ES * AMD SEV-SNP * Intel TDX On HyperV/Azure, it has special checks for detecting SEV-SNP since the normal CPUID is blocked. Related: https://github.com/systemd/systemd/issues/27604 Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>