diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_interrupts.S')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_interrupts.S | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_interrupts.S b/arch/powerpc/kvm/book3s_hv_interrupts.S index 37f1cc417ca..731be7478b2 100644 --- a/arch/powerpc/kvm/book3s_hv_interrupts.S +++ b/arch/powerpc/kvm/book3s_hv_interrupts.S @@ -35,7 +35,7 @@ ****************************************************************************/ /* Registers: - * r4: vcpu pointer + * none */ _GLOBAL(__kvmppc_vcore_entry) @@ -57,9 +57,11 @@ BEGIN_FTR_SECTION std r3, HSTATE_DSCR(r13) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) +BEGIN_FTR_SECTION /* Save host DABR */ mfspr r3, SPRN_DABR std r3, HSTATE_DABR(r13) +END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) /* Hard-disable interrupts */ mfmsr r10 @@ -69,7 +71,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) mtmsrd r10,1 /* Save host PMU registers */ - /* R4 is live here (vcpu pointer) but not r3 or r5 */ +BEGIN_FTR_SECTION + /* Work around P8 PMAE bug */ + li r3, -1 + clrrdi r3, r3, 10 + mfspr r8, SPRN_MMCR2 + mtspr SPRN_MMCR2, r3 /* freeze all counters using MMCR2 */ + isync +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) li r3, 1 sldi r3, r3, 31 /* MMCR0_FC (freeze counters) bit */ mfspr r7, SPRN_MMCR0 /* save MMCR0 */ @@ -86,9 +95,18 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) cmpwi r5, 0 beq 31f /* skip if not */ mfspr r5, SPRN_MMCR1 + mfspr r9, SPRN_SIAR + mfspr r10, SPRN_SDAR std r7, HSTATE_MMCR(r13) std r5, HSTATE_MMCR + 8(r13) std r6, HSTATE_MMCR + 16(r13) + std r9, HSTATE_MMCR + 24(r13) + std r10, HSTATE_MMCR + 32(r13) +BEGIN_FTR_SECTION + mfspr r9, SPRN_SIER + std r8, HSTATE_MMCR + 40(r13) + std r9, HSTATE_MMCR + 48(r13) +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) mfspr r3, SPRN_PMC1 mfspr r5, SPRN_PMC2 mfspr r6, SPRN_PMC3 @@ -134,22 +152,21 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201) * enters the guest with interrupts enabled. */ BEGIN_FTR_SECTION + ld r4, HSTATE_KVM_VCPU(r13) ld r0, VCPU_PENDING_EXC(r4) li r7, (1 << BOOK3S_IRQPRIO_EXTERNAL) oris r7, r7, (1 << BOOK3S_IRQPRIO_EXTERNAL_LEVEL)@h and. r0, r0, r7 beq 32f - mr r31, r4 lhz r3, PACAPACAINDEX(r13) bl smp_send_reschedule nop - mr r4, r31 32: END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201) #endif /* CONFIG_SMP */ /* Jump to partition switch code */ - bl .kvmppc_hv_entry_trampoline + bl kvmppc_hv_entry_trampoline nop /* @@ -158,9 +175,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201) * Interrupts are enabled again at this point. */ -.global kvmppc_handler_highmem -kvmppc_handler_highmem: - /* * Register usage at this point: * |