diff options
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 163c041cec2..5bc06fdfa6c 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -49,19 +49,32 @@ BEGIN_FTR_SECTION * state loss at this time. */ mfspr r13,SPRN_SRR1 - rlwinm r13,r13,47-31,30,31 - cmpwi cr0,r13,1 - bne 1f - b .power7_wakeup_noloss -1: cmpwi cr0,r13,2 - bne 1f - b .power7_wakeup_loss + rlwinm. r13,r13,47-31,30,31 + beq 9f + + /* waking up from powersave (nap) state */ + cmpwi cr1,r13,2 /* Total loss of HV state is fatal, we could try to use the * PIR to locate a PACA, then use an emergency stack etc... * but for now, let's just stay stuck here */ -1: cmpwi cr0,r13,3 - beq . + bgt cr1,. + GET_PACA(r13) + +#ifdef CONFIG_KVM_BOOK3S_64_HV + lbz r0,PACAPROCSTART(r13) + cmpwi r0,0x80 + bne 1f + li r0,0 + stb r0,PACAPROCSTART(r13) + b kvm_start_guest +1: +#endif + + beq cr1,2f + b .power7_wakeup_noloss +2: b .power7_wakeup_loss +9: END_FTR_SECTION_IFSET(CPU_FTR_HVMODE_206) #endif /* CONFIG_PPC_P7_NAP */ EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD, |