From: Suraj Jitindar Singh Date: Fri, 14 Dec 2018 05:29:03 +0000 (+1100) Subject: KVM: PPC: Book3S: Only report KVM_CAP_SPAPR_TCE_VFIO on powernv machines X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=693ac10a88a2219bde553b2e8460dbec97e594e6;p=openwrt%2Fstaging%2Fblogic.git KVM: PPC: Book3S: Only report KVM_CAP_SPAPR_TCE_VFIO on powernv machines 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. [paulus@ozlabs.org - fixed compilation for Book E.] Signed-off-by: Suraj Jitindar Singh Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 6a7a6a101efd..18dd98f35ac1 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -543,8 +543,11 @@ 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 = !!cpu_has_feature(CPU_FTR_HVMODE); + break; case KVM_CAP_PPC_RTAS: case KVM_CAP_PPC_FIXUP_HCALL: case KVM_CAP_PPC_ENABLE_HCALL: