diff options
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/kvm/e500_tlb.c | 22 | ||||
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 3 |
3 files changed, 34 insertions, 2 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 0ecbecb2f7c..4538956daec 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -472,6 +472,17 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, gpa_t gpaddr; gfn_t gfn; +#ifdef CONFIG_KVM_E500 + if (!(vcpu->arch.shared->msr & MSR_PR) && + (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) { + kvmppc_map_magic(vcpu); + kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS); + r = RESUME_GUEST; + + break; + } +#endif + /* Check the guest TLB. */ gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr); if (gtlb_index < 0) { diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index 7f808c52e64..c09e642ee53 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -76,7 +76,8 @@ static inline unsigned int tlb0_get_next_victim( static inline unsigned int tlb1_max_shadow_size(void) { - return tlb1_entry_num - tlbcam_index; + /* reserve one entry for magic page */ + return tlb1_entry_num - tlbcam_index - 1; } static inline int tlbe_is_writable(struct tlbe *tlbe) @@ -142,6 +143,25 @@ static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, } } +void kvmppc_map_magic(struct kvm_vcpu *vcpu) +{ + struct tlbe magic; + ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; + pfn_t pfn; + + pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT; + get_page(pfn_to_page(pfn)); + + magic.mas1 = MAS1_VALID | MAS1_TS | + MAS1_TSIZE(BOOK3E_PAGESZ_4K); + magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M; + magic.mas3 = (pfn << PAGE_SHIFT) | + MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR; + magic.mas7 = pfn >> (32 - PAGE_SHIFT); + + __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index)); +} + void kvmppc_e500_tlb_load(struct kvm_vcpu *vcpu, int cpu) { } diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 616dd516ca1..24e2b64b6a4 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -73,7 +73,8 @@ int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) } case HC_VENDOR_KVM | KVM_HC_FEATURES: r = HC_EV_SUCCESS; -#if defined(CONFIG_PPC_BOOK3S) /* XXX Missing magic page on BookE */ +#if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) + /* XXX Missing magic page on 44x */ r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); #endif |