The EFI updates were merged today for the ongoing Linux 6.9 merge window. This cycle the EFI kernel code is seeing enhancements for confidential computing as well as for satisfy Microsoft's requirements for getting them to sign the x86 shim loader again for UEFI Secure Boot handling. The EFI changes for Linux 6.9 allow using the Confidential Computing (CC) protocol should the TCG2 protocol not be supported, such as the case for Intel Trusted Domain Extensions (TDX) confidential virtual machines....