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Diffstat (limited to 'arch/powerpc/kvm/book3s_rtas.c')
-rw-r--r--arch/powerpc/kvm/book3s_rtas.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/powerpc/kvm/book3s_rtas.c b/arch/powerpc/kvm/book3s_rtas.c
index cf95cdef73c9..7a053157483b 100644
--- a/arch/powerpc/kvm/book3s_rtas.c
+++ b/arch/powerpc/kvm/book3s_rtas.c
@@ -213,8 +213,11 @@ int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu)
gpa_t args_phys;
int rc;
- /* r4 contains the guest physical address of the RTAS args */
- args_phys = kvmppc_get_gpr(vcpu, 4);
+ /*
+ * r4 contains the guest physical address of the RTAS args
+ * Mask off the top 4 bits since this is a guest real address
+ */
+ args_phys = kvmppc_get_gpr(vcpu, 4) & KVM_PAM;
rc = kvm_read_guest(vcpu->kvm, args_phys, &args, sizeof(args));
if (rc)