We will use this feature to check whether hypervisor implements hash based remove and protect hcalls
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com> --- arch/powerpc/include/asm/firmware.h | 3 ++- arch/powerpc/kvm/powerpc.c | 4 ++++ arch/powerpc/platforms/pseries/firmware.c | 1 + include/uapi/linux/kvm.h | 1 + 4 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h index 8645897472b1..152d704ac3c3 100644 --- a/arch/powerpc/include/asm/firmware.h +++ b/arch/powerpc/include/asm/firmware.h @@ -51,6 +51,7 @@ #define FW_FEATURE_BEST_ENERGY ASM_CONST(0x0000000080000000) #define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000) #define FW_FEATURE_PRRN ASM_CONST(0x0000000200000000) +#define FW_FEATURE_HASH_API ASM_CONST(0x0000000400000000) #ifndef __ASSEMBLY__ @@ -67,7 +68,7 @@ enum { FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO | FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY | FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN | - FW_FEATURE_HPT_RESIZE, + FW_FEATURE_HPT_RESIZE | FW_FEATURE_HASH_API, FW_FEATURE_PSERIES_ALWAYS = 0, FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL, FW_FEATURE_POWERNV_ALWAYS = 0, diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 3480faaf1ef8..6fb91198dc90 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -637,6 +637,10 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) /* Disable this on POWER9 until code handles new HPTE format */ r = !!hv_enabled && !cpu_has_feature(CPU_FTR_ARCH_300); break; + case KVM_CAP_SPAPR_HASH_API: + /* Only enable for HV kvm */ + r = is_kvmppc_hv_enabled(kvm); + break; #endif #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE case KVM_CAP_PPC_FWNMI: diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c index 63cc82ad58ac..32081d4406e8 100644 --- a/arch/powerpc/platforms/pseries/firmware.c +++ b/arch/powerpc/platforms/pseries/firmware.c @@ -65,6 +65,7 @@ hypertas_fw_features_table[] = { {FW_FEATURE_SET_MODE, "hcall-set-mode"}, {FW_FEATURE_BEST_ENERGY, "hcall-best-energy-1*"}, {FW_FEATURE_HPT_RESIZE, "hcall-hpt-resize"}, + {FW_FEATURE_HASH_API, "hcall-hash-api"}, }; /* Build up the firmware features bitmask using the contents of diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 838887587411..780433b1f179 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -930,6 +930,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_PPC_SMT_POSSIBLE 147 #define KVM_CAP_HYPERV_SYNIC2 148 #define KVM_CAP_HYPERV_VP_INDEX 149 +#define KVM_CAP_SPAPR_HASH_API 150 #ifdef KVM_CAP_IRQ_ROUTING -- 2.13.6