6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Russell Currey <ruscur@xxxxxxxxxx> [ Upstream commit 9ee76bd5c7e39b622660cc14833ead1967f2038d ] 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@xxxxxxxxxx> Signed-off-by: Andrew Donnellan <ajd@xxxxxxxxxxxxx> Reviewed-by: Stefan Berger <stefanb@xxxxxxxxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20230210080401.345462-23-ajd@xxxxxxxxxxxxx Stable-dep-of: 932bed412170 ("powerpc/kexec_file: fix cpus node update to FDT") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/powerpc/include/asm/plpks.h | 5 +++++ arch/powerpc/platforms/pseries/plpks.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/arch/powerpc/include/asm/plpks.h b/arch/powerpc/include/asm/plpks.h index 8dab5c26c1e41..9e2219b0202db 100644 --- a/arch/powerpc/include/asm/plpks.h +++ b/arch/powerpc/include/asm/plpks.h @@ -153,6 +153,11 @@ 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 diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c index 2b659f2b01214..eea251105e394 100644 --- a/arch/powerpc/platforms/pseries/plpks.c +++ b/arch/powerpc/platforms/pseries/plpks.c @@ -348,6 +348,11 @@ u64 plpks_get_signedupdatealgorithms(void) return signedupdatealgorithms; } +u16 plpks_get_passwordlen(void) +{ + return ospasswordlength; +} + bool plpks_is_available(void) { int rc; -- 2.43.0
