Commit 9ee76bd5 authored Feb 10, 2023 by Russell Currey Committed by Michael Ellerman Feb 12, 2023

powerpc/pseries: Add helper to get PLPKS password length



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

parent ca4f1d22

arch/powerpc/include/asm/plpks.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -171,6 +171,11 @@ u32 plpks_get_maxlargeobjectsize(void);
		*/
		u64 plpks_get_signedupdatealgorithms(void);

		/**
		* Returns the length of the PLPKS password in bytes.
		*/
		u16 plpks_get_passwordlen(void);

		#endif // CONFIG_PSERIES_PLPKS

		#endif // _ASM_POWERPC_PLPKS_H

arch/powerpc/platforms/pseries/plpks.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -359,6 +359,11 @@ u64 plpks_get_signedupdatealgorithms(void)
		return signedupdatealgorithms;
		}

		u16 plpks_get_passwordlen(void)
		{
		return ospasswordlength;
		}

		bool plpks_is_available(void)
		{
		int rc;