The kvm capability KVM_CAP_SPAPR_TCE_VFIO is used to indicate the
availability of in kernel tce acceleration for vfio. However it is
currently the case that this is only available on a powernv machine,
not for a pseries machine.
Thus make this capability dependent on having the cpu feature
CPU_FTR_HVMODE.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@xxxxxxxxx>
---
arch/powerpc/kvm/powerpc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2869a299c4ed..95859c53a5cd 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -496,6 +496,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
int r;
/* Assume we're using HV mode when the HV module is loaded */
int hv_enabled = kvmppc_hv_ops ? 1 : 0;
+ int kvm_on_pseries = !cpu_has_feature(CPU_FTR_HVMODE);
if (kvm) {
/*
@@ -543,8 +544,11 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
#ifdef CONFIG_PPC_BOOK3S_64
case KVM_CAP_SPAPR_TCE:
case KVM_CAP_SPAPR_TCE_64:
- /* fallthrough */
+ r = 1;
+ break;
case KVM_CAP_SPAPR_TCE_VFIO:
+ r = !kvm_on_pseries;
+ break;
case KVM_CAP_PPC_RTAS:
case KVM_CAP_PPC_FIXUP_HCALL:
case KVM_CAP_PPC_ENABLE_HCALL:
--
2.13.6
