Trusted execution environments (TEEs) protect applications running inside of them from untrusted host systems. The host can not access or modify the memory of applications protected by a TEE. Intel TDX is a recently introduced TEE that allows for the execution of arbitrary code, including entire operating systems, inside a protected environment. Prior work has attacked AMD SEV-SNP, AMD's counterpart to Intel TDX, using performance counters, by leaking sensitive information through them, e.g., which branches are taken. Intel TDX is thought not to be affected by such attacks, as it disables performance counters when entering the protected guests (TDs) to mitigate these attacks.