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Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
-rw-r--r--arch/powerpc/kvm/book3s.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 9624c5644103..1d137642f1a2 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -72,6 +72,17 @@ void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
{
}
+void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
+ ulong pc = kvmppc_get_pc(vcpu);
+ if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
+ kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
+ vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
+ }
+}
+EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
+
static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
{
if (!is_kvmppc_hv_enabled(vcpu->kvm))
@@ -118,6 +129,7 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
{
+ kvmppc_unfixup_split_real(vcpu);
kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
@@ -384,6 +396,13 @@ static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
pte->may_write = true;
pte->may_execute = true;
r = 0;
+
+ if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
+ !data) {
+ if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
+ ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
+ pte->raddr &= ~SPLIT_HACK_MASK;
+ }
}
return r;