KVM: PPC: Add support for explicit HIOR setting

[pandora-kernel.git] / arch / powerpc / kvm / book3s_pr.c

diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 0c0d3f2..78dcf65 100644 (file)
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -150,13 +150,15 @@ void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr)
 #ifdef CONFIG_PPC_BOOK3S_64
        if ((pvr >= 0x330000) && (pvr < 0x70330000)) {
                kvmppc_mmu_book3s_64_init(vcpu);
-               to_book3s(vcpu)->hior = 0xfff00000;
+               if (!to_book3s(vcpu)->hior_sregs)
+                       to_book3s(vcpu)->hior = 0xfff00000;
                to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL;
        } else
 #endif
        {
                kvmppc_mmu_book3s_32_init(vcpu);
-               to_book3s(vcpu)->hior = 0;
+               if (!to_book3s(vcpu)->hior_sregs)
+                       to_book3s(vcpu)->hior = 0;
                to_book3s(vcpu)->msr_mask = 0xffffffffULL;
        }
 
@@ -770,6 +772,9 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
                }
        }
 
+       if (sregs->u.s.flags & KVM_SREGS_S_HIOR)
+               sregs->u.s.hior = to_book3s(vcpu)->hior;
+
        return 0;
 }
 
@@ -806,6 +811,11 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
        /* Flush the MMU after messing with the segments */
        kvmppc_mmu_pte_flush(vcpu, 0, 0);
 
+       if (sregs->u.s.flags & KVM_SREGS_S_HIOR) {
+               to_book3s(vcpu)->hior_sregs = true;
+               to_book3s(vcpu)->hior = sregs->u.s.hior;
+       }
+
        return 0;
 }