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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-08-30 16:20:09 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-09-04 20:45:35 -0500 |
| commit | e65cecd718c6dcbfc95b447d2622c9011af3b487 (patch) | |
| tree | 69ba981ce345ca788c7617d78768ea7a2fbdb4e6 /hw/slw.c | |
| parent | 7af2a68d1ac7906bbf3a098c82337d563d2a801d (diff) | |
| download | blackbird-skiboot-e65cecd718c6dcbfc95b447d2622c9011af3b487.tar.gz blackbird-skiboot-e65cecd718c6dcbfc95b447d2622c9011af3b487.zip | |
idle: user context state loss flags fix for stop states
The "lite" stop variants with PSSCR[ESL]=PSSCR[EC]=1 do not lose user
context, while the non-lite variants do (ESL: enable state loss).
Some of the POWER9 idle states had these wrong.
These are not used by Linux yet.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw/slw.c')
| -rw-r--r-- | hw/slw.c | 8 |
1 files changed, 4 insertions, 4 deletions
@@ -526,7 +526,7 @@ static struct cpu_idle_states power9_cpu_idle_states[] = { .residency_ns = 20000, .flags = 0*OPAL_PM_DEC_STOP \ | 0*OPAL_PM_TIMEBASE_STOP \ - | 0*OPAL_PM_LOSE_USER_CONTEXT \ + | 1*OPAL_PM_LOSE_USER_CONTEXT \ | 0*OPAL_PM_LOSE_HYP_CONTEXT \ | 0*OPAL_PM_LOSE_FULL_CONTEXT \ | 1*OPAL_PM_STOP_INST_FAST, @@ -542,7 +542,7 @@ static struct cpu_idle_states power9_cpu_idle_states[] = { .residency_ns = 49000, .flags = 0*OPAL_PM_DEC_STOP \ | 0*OPAL_PM_TIMEBASE_STOP \ - | 1*OPAL_PM_LOSE_USER_CONTEXT \ + | 0*OPAL_PM_LOSE_USER_CONTEXT \ | 0*OPAL_PM_LOSE_HYP_CONTEXT \ | 0*OPAL_PM_LOSE_FULL_CONTEXT \ | 1*OPAL_PM_STOP_INST_FAST, @@ -572,7 +572,7 @@ static struct cpu_idle_states power9_cpu_idle_states[] = { .residency_ns = 99000, .flags = 0*OPAL_PM_DEC_STOP \ | 0*OPAL_PM_TIMEBASE_STOP \ - | 1*OPAL_PM_LOSE_USER_CONTEXT \ + | 0*OPAL_PM_LOSE_USER_CONTEXT \ | 0*OPAL_PM_LOSE_HYP_CONTEXT \ | 0*OPAL_PM_LOSE_FULL_CONTEXT \ | 1*OPAL_PM_STOP_INST_FAST, @@ -671,7 +671,7 @@ static struct cpu_idle_states power9_ndd1_cpu_idle_states[] = { .residency_ns = 49000, .flags = 0*OPAL_PM_DEC_STOP \ | 0*OPAL_PM_TIMEBASE_STOP \ - | 1*OPAL_PM_LOSE_USER_CONTEXT \ + | 0*OPAL_PM_LOSE_USER_CONTEXT \ | 0*OPAL_PM_LOSE_HYP_CONTEXT \ | 0*OPAL_PM_LOSE_FULL_CONTEXT \ | 1*OPAL_PM_STOP_INST_FAST, |
