Emulate TLBnPS registers which are available in MMU Architecture Version
(MAV) 2.0.
Signed-off-by: Mihai Caraman <mihai.caraman@xxxxxxxxxxxxx>
---
arch/powerpc/include/asm/kvm_host.h | 1 +
arch/powerpc/kvm/e500.h | 5 +++++
arch/powerpc/kvm/e500_emulate.c | 10 ++++++++++
arch/powerpc/kvm/e500_mmu.c | 5 +++++
4 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 8a72d59..88fcfe6 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -501,6 +501,7 @@ struct kvm_vcpu_arch {
spinlock_t wdt_lock;
struct timer_list wdt_timer;
u32 tlbcfg[4];
+ u32 tlbps[4];
u32 mmucfg;
u32 epr;
struct kvmppc_booke_debug_reg dbg_reg;
diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
index 41cefd4..b9f76d8 100644
--- a/arch/powerpc/kvm/e500.h
+++ b/arch/powerpc/kvm/e500.h
@@ -303,4 +303,9 @@ static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu)
#define get_tlb_sts(gtlbe) (MAS1_TS)
#endif /* !BOOKE_HV */
+static inline unsigned int has_mmu_v2(const struct kvm_vcpu *vcpu)
+{
+ return ((vcpu->arch.mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2);
+}
+
#endif /* KVM_E500_H */
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index e78f353..5515dc5 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -329,6 +329,16 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
*spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
break;
#endif
+ case SPRN_TLB0PS:
+ if (!has_mmu_v2(vcpu))
+ return EMULATE_FAIL;
+ *spr_val = vcpu->arch.tlbps[0];
+ break;
+ case SPRN_TLB1PS:
+ if (!has_mmu_v2(vcpu))
+ return EMULATE_FAIL;
+ *spr_val = vcpu->arch.tlbps[1];
+ break;
default:
emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, spr_val);
}
diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c
index bb1b2b0..129299a 100644
--- a/arch/powerpc/kvm/e500_mmu.c
+++ b/arch/powerpc/kvm/e500_mmu.c
@@ -794,6 +794,11 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
vcpu->arch.tlbcfg[1] |=
vcpu_e500->gtlb_params[1].ways << TLBnCFG_ASSOC_SHIFT;
+ if (has_mmu_v2(vcpu)) {
+ vcpu->arch.tlbps[0] = mfspr(SPRN_TLB0PS);
+ vcpu->arch.tlbps[1] = mfspr(SPRN_TLB1PS);
+ }
+
kvmppc_recalc_tlb1map_range(vcpu_e500);
return 0;
--
1.7.4.1
--
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