diff options
Diffstat (limited to 'arch/powerpc/kvm/e500_mmu_host.c')
| -rw-r--r-- | arch/powerpc/kvm/e500_mmu_host.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index 1c6a9d72..9f87220 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -77,7 +77,8 @@ static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode) * writing shadow tlb entry to host TLB */ static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe, - uint32_t mas0) + uint32_t mas0, + uint32_t *lpid) { unsigned long flags; @@ -88,6 +89,8 @@ static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe, mtspr(SPRN_MAS3, (u32)stlbe->mas7_3); mtspr(SPRN_MAS7, (u32)(stlbe->mas7_3 >> 32)); #ifdef CONFIG_KVM_BOOKE_HV + /* populate mas8 with latest LPID */ + stlbe->mas8 = MAS8_TGS | *lpid; mtspr(SPRN_MAS8, stlbe->mas8); #endif asm volatile("isync; tlbwe" : : : "memory"); @@ -115,11 +118,15 @@ static u32 get_host_mas0(unsigned long eaddr) { unsigned long flags; u32 mas0; + u32 mas4; local_irq_save(flags); mtspr(SPRN_MAS6, 0); + mas4 = mfspr(SPRN_MAS4); + mtspr(SPRN_MAS4, mas4 & ~MAS4_TLBSEL_MASK); asm volatile("tlbsx 0, %0" : : "b" (eaddr & ~CONFIG_PAGE_OFFSET)); mas0 = mfspr(SPRN_MAS0); + mtspr(SPRN_MAS4, mas4); local_irq_restore(flags); return mas0; @@ -130,14 +137,21 @@ static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int sesel, struct kvm_book3e_206_tlb_entry *stlbe) { u32 mas0; + /* We use a pointer here bacause LPID value can change dynamically */ + uint32_t *lpid = NULL; + +#ifdef CONFIG_KVM_BOOKE_HV + lpid = &vcpu_e500->vcpu.arch.lpid; +#endif if (tlbsel == 0) { mas0 = get_host_mas0(stlbe->mas2); - __write_host_tlbe(stlbe, mas0); + __write_host_tlbe(stlbe, mas0, lpid); } else { __write_host_tlbe(stlbe, MAS0_TLBSEL(1) | - MAS0_ESEL(to_htlb1_esel(sesel))); + MAS0_ESEL(to_htlb1_esel(sesel)), + lpid); } } @@ -180,7 +194,8 @@ void kvmppc_map_magic(struct kvm_vcpu *vcpu) MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR; magic.mas8 = 0; - __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index)); + __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index), + NULL); preempt_enable(); } #endif @@ -317,9 +332,7 @@ static void kvmppc_e500_setup_stlbe( stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) | e500_shadow_mas3_attrib(gtlbe->mas7_3, pr); -#ifdef CONFIG_KVM_BOOKE_HV - stlbe->mas8 = MAS8_TGS | vcpu->kvm->arch.lpid; -#endif + /* Set mas8 when executing tlbwe since LPID can change dynamically */ } static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, |