diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_rmhandlers.S')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index fcf3a617cc8a..4d70df26c402 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1123,6 +1123,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) cmpwi r12,BOOK3S_INTERRUPT_SYSCALL beq hcall_try_real_mode + /* Hypervisor doorbell - exit only if host IPI flag set */ + cmpwi r12, BOOK3S_INTERRUPT_H_DOORBELL + bne 3f + lbz r0, HSTATE_HOST_IPI(r13) + beq 4f + b guest_exit_cont +3: /* External interrupt ? */ cmpwi r12, BOOK3S_INTERRUPT_EXTERNAL bne+ guest_exit_cont @@ -1135,7 +1142,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) bgt guest_exit_cont /* Check if any CPU is heading out to the host, if so head out too */ - ld r5, HSTATE_KVM_VCORE(r13) +4: ld r5, HSTATE_KVM_VCORE(r13) lwz r0, VCORE_ENTRY_EXIT(r5) cmpwi r0, 0x100 mr r4, r9 @@ -2148,7 +2155,7 @@ _GLOBAL(kvmppc_h_cede) /* r3 = vcpu pointer, r11 = msr, r13 = paca */ /* * Take a nap until a decrementer or external or doobell interrupt * occurs, with PECE1 and PECE0 set in LPCR. - * On POWER8, if we are ceding, also set PECEDP. + * On POWER8, set PECEDH, and if we are ceding, also set PECEDP. * Also clear the runlatch bit before napping. */ kvm_do_nap: @@ -2161,6 +2168,7 @@ kvm_do_nap: mfspr r5,SPRN_LPCR ori r5,r5,LPCR_PECE0 | LPCR_PECE1 BEGIN_FTR_SECTION + ori r5, r5, LPCR_PECEDH rlwimi r5, r3, 0, LPCR_PECEDP END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) mtspr SPRN_LPCR,r5 @@ -2299,7 +2307,7 @@ machine_check_realmode: * Returns (in r3): * 0 if nothing needs to be done * 1 if something happened that needs to be handled by the host - * -1 if there was a guest wakeup (IPI) + * -1 if there was a guest wakeup (IPI or msgsnd) * * Also sets r12 to the interrupt vector for any interrupt that needs * to be handled now by the host (0x500 for external interrupt), or zero. @@ -2330,7 +2338,15 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) /* hypervisor doorbell */ 3: li r12, BOOK3S_INTERRUPT_H_DOORBELL + /* see if it's a host IPI */ li r3, 1 + lbz r0, HSTATE_HOST_IPI(r13) + cmpwi r0, 0 + bnelr + /* if not, clear it and return -1 */ + lis r6, (PPC_DBELL_SERVER << (63-36))@h + PPC_MSGCLR(6) + li r3, -1 blr /* |