diff options
Diffstat (limited to 'arch/powerpc/kernel/idle_book3s.S')
| -rw-r--r-- | arch/powerpc/kernel/idle_book3s.S | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/idle_book3s.S b/arch/powerpc/kernel/idle_book3s.S index 6c9920d9221c..98a6d07ecb5c 100644 --- a/arch/powerpc/kernel/idle_book3s.S +++ b/arch/powerpc/kernel/idle_book3s.S @@ -379,6 +379,7 @@ _GLOBAL(power9_idle_stop) mfspr r5,SPRN_PSSCR andc r5,r5,r4 or r3,r3,r5 + std r3, PACA_REQ_PSSCR(r13) mtspr SPRN_PSSCR,r3 LOAD_REG_ADDR(r5,power_enter_stop) li r4,1 @@ -498,12 +499,22 @@ pnv_restore_hyp_resource_arch300: LOAD_REG_ADDRBASE(r5,pnv_first_deep_stop_state) ld r4,ADDROFF(pnv_first_deep_stop_state)(r5) - mfspr r5,SPRN_PSSCR +BEGIN_FTR_SECTION_NESTED(71) + /* + * Assume that we are waking up from the state + * same as the Requested Level (RL) in the PSSCR + * which are Bits 60-63 + */ + ld r5,PACA_REQ_PSSCR(r13) + rldicl r5,r5,0,60 +FTR_SECTION_ELSE_NESTED(71) /* * 0-3 bits correspond to Power-Saving Level Status * which indicates the idle state we are waking up from */ + mfspr r5, SPRN_PSSCR rldicl r5,r5,4,60 +ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_POWER9_DD1, 71) cmpd cr4,r5,r4 bge cr4,pnv_wakeup_tb_loss /* returns to caller */ |