diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ppc_ksyms.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 32 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_pr.c | 25 | ||||
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 18 |
5 files changed, 80 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index c1069f63dcaf..c87e3b503fdc 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -140,6 +140,8 @@ extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem); extern void kvmppc_core_commit_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem); +extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, + struct kvm_ppc_smmu_info *info); extern int kvmppc_bookehv_init(void); extern void kvmppc_bookehv_exit(void); diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 786a2700ec2d..d1f2aafcbe8c 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -190,3 +190,7 @@ EXPORT_SYMBOL(__arch_hweight16); EXPORT_SYMBOL(__arch_hweight32); EXPORT_SYMBOL(__arch_hweight64); #endif + +#ifdef CONFIG_PPC_BOOK3S_64 +EXPORT_SYMBOL_GPL(mmu_psize_defs); +#endif diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 59c296743595..bb5a0f4b4bbb 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1175,6 +1175,38 @@ long kvm_vm_ioctl_allocate_rma(struct kvm *kvm, struct kvm_allocate_rma *ret) return fd; } +static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps, + int linux_psize) +{ + struct mmu_psize_def *def = &mmu_psize_defs[linux_psize]; + + if (!def->shift) + return; + (*sps)->page_shift = def->shift; + (*sps)->slb_enc = def->sllp; + (*sps)->enc[0].page_shift = def->shift; + (*sps)->enc[0].pte_enc = def->penc; + (*sps)++; +} + +int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, struct kvm_ppc_smmu_info *info) +{ + struct kvm_ppc_one_seg_page_size *sps; + + info->flags = KVM_PPC_PAGE_SIZES_REAL; + if (mmu_has_feature(MMU_FTR_1T_SEGMENT)) + info->flags |= KVM_PPC_1T_SEGMENTS; + info->slb_size = mmu_slb_size; + + /* We only support these sizes for now, and no muti-size segments */ + sps = &info->sps[0]; + kvmppc_add_seg_page_size(&sps, MMU_PAGE_4K); + kvmppc_add_seg_page_size(&sps, MMU_PAGE_64K); + kvmppc_add_seg_page_size(&sps, MMU_PAGE_16M); + + return 0; +} + /* * Get (and clear) the dirty memory log for a memory slot. */ diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 815ac5938a9e..a1baec340f7e 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -1158,6 +1158,31 @@ out: return r; } +#ifdef CONFIG_PPC64 +int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, struct kvm_ppc_smmu_info *info) +{ + /* No flags */ + info->flags = 0; + + /* SLB is always 64 entries */ + info->slb_size = 64; + + /* Standard 4k base page size segment */ + info->sps[0].page_shift = 12; + info->sps[0].slb_enc = 0; + info->sps[0].enc[0].page_shift = 12; + info->sps[0].enc[0].pte_enc = 0; + + /* Standard 16M large page size segment */ + info->sps[1].page_shift = 24; + info->sps[1].slb_enc = SLB_VSID_L; + info->sps[1].enc[0].page_shift = 24; + info->sps[1].enc[0].pte_enc = 0; + + return 0; +} +#endif /* CONFIG_PPC64 */ + int kvmppc_core_prepare_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem) { diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 6ac31154d170..1493c8de947b 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -279,6 +279,11 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_MAX_VCPUS: r = KVM_MAX_VCPUS; break; +#ifdef CONFIG_PPC_BOOK3S_64 + case KVM_CAP_PPC_GET_SMMU_INFO: + r = 1; + break; +#endif default: r = 0; break; @@ -718,7 +723,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp, break; } #endif - default: r = -EINVAL; } @@ -800,6 +804,18 @@ long kvm_arch_vm_ioctl(struct file *filp, } #endif /* CONFIG_KVM_BOOK3S_64_HV */ +#ifdef CONFIG_PPC_BOOK3S_64 + case KVM_PPC_GET_SMMU_INFO: { + struct kvm *kvm = filp->private_data; + struct kvm_ppc_smmu_info info; + + memset(&info, 0, sizeof(info)); + r = kvm_vm_ioctl_get_smmu_info(kvm, &info); + if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) + r = -EFAULT; + break; + } +#endif /* CONFIG_PPC_BOOK3S_64 */ default: r = -ENOTTY; } |