[ Upstream commit 9ee76bd5c7 ]
Add helper function to get the PLPKS password length. This will be used
in a later patch to support passing the password between kernels over
kexec.
Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230210080401.345462-23-ajd@linux.ibm.com
Stable-dep-of: 932bed4121 ("powerpc/kexec_file: fix cpus node update to FDT")
Signed-off-by: Sasha Levin <sashal@kernel.org>
d746b2f0c2