515ab90e4d
PCR 7 covers the SecureBoot policy, in particular "dbx", i.e. the denylist of bad actors. That list is pretty much as frequently updated as firmware these days (as fwupd took over automatic updating). This means literal PCR 7 policies are problematic: they likely break soon, and are as brittle as any other literal PCR policies. hence, pick safer defaults, i.e. exclude PCR 7 from the default mask. This means the mask is now empty. Generally, people should really switch to signed PCR policies covering PCR 11, in combination with systemd-pcrlock for the other PCRs.
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