On Tue Apr 30, 2024 at 1:26 AM EEST, Jarkko Sakkinen wrote: > Right and obviously 3rd option is to send a PR to > https://gitlab.com/jarkkojs/linux-tpmdd-test. > > I.e. patch file goes to patches/qemu (BR2_GLOBAL_PATCH_DIR > points there). Stefan, can I do a "zero QEMU changes" negative test for changing null seed by somehow reseting swtpm? That would be best possible option (if it is possible). It does not matter what side-effects it has on swtpm side as long as the hmac path gets invalidated, as then the device is rendered as unusable. BR, Jarkko