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| author | Andrew Donnellan <ajd@linux.ibm.com> | 2023-02-24 15:10:12 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-04-20 13:21:46 +1000 |
| commit | df9cad09493808dca7d16a2fbcac1a78e8d412af (patch) | |
| tree | 155e3b93631ecfda14ba7d6961273ef16ce81555 /arch/powerpc/platforms | |
| parent | ae7312c09014fceb782a92cfb934e973f08b338f (diff) | |
| download | linux-stable-df9cad09493808dca7d16a2fbcac1a78e8d412af.tar.gz linux-stable-df9cad09493808dca7d16a2fbcac1a78e8d412af.tar.bz2 linux-stable-df9cad09493808dca7d16a2fbcac1a78e8d412af.zip | |
powerpc/pseries: Add FW_FEATURE_PLPKS feature flag
Add a firmware feature flag, FW_FEATURE_PLPKS, to indicate availability of
Platform KeyStore related hcalls.
Check this flag in plpks_is_available() and pseries_plpks_init() before
trying to make an hcall.
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230224041012.772648-1-ajd@linux.ibm.com
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/pseries/firmware.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/plpks.c | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c index 080108d129ed..18447e5fa17d 100644 --- a/arch/powerpc/platforms/pseries/firmware.c +++ b/arch/powerpc/platforms/pseries/firmware.c @@ -68,6 +68,7 @@ hypertas_fw_features_table[] = { {FW_FEATURE_RPT_INVALIDATE, "hcall-rpt-invalidate"}, {FW_FEATURE_ENERGY_SCALE_INFO, "hcall-energy-scale-info"}, {FW_FEATURE_WATCHDOG, "hcall-watchdog"}, + {FW_FEATURE_PLPKS, "hcall-pks"}, }; /* Build up the firmware features bitmask using the contents of diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c index 6f7bf3fc3aea..b0658ea3eccb 100644 --- a/arch/powerpc/platforms/pseries/plpks.c +++ b/arch/powerpc/platforms/pseries/plpks.c @@ -378,7 +378,7 @@ bool plpks_is_available(void) { int rc; - if (!firmware_has_feature(FW_FEATURE_LPAR)) + if (!firmware_has_feature(FW_FEATURE_PLPKS)) return false; rc = _plpks_get_config(); @@ -690,6 +690,9 @@ static __init int pseries_plpks_init(void) { int rc; + if (!firmware_has_feature(FW_FEATURE_PLPKS)) + return -ENODEV; + rc = _plpks_get_config(); if (rc) { |