diff options
Diffstat (limited to 'hw/ppc/spapr_caps.c')
| -rw-r--r-- | hw/ppc/spapr_caps.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index ca35b51..c5d381f 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -441,6 +441,21 @@ static void cap_large_decr_cpu_apply(sPAPRMachineState *spapr, ppc_store_lpcr(cpu, lpcr); } +static void cap_ccf_assist_apply(sPAPRMachineState *spapr, uint8_t val, + Error **errp) +{ + uint8_t kvm_val = kvmppc_get_cap_count_cache_flush_assist(); + + if (tcg_enabled() && val) { + /* TODO - for now only allow broken for TCG */ + error_setg(errp, +"Requested count cache flush assist capability level not supported by tcg, try cap-ccf-assist=off"); + } else if (kvm_enabled() && (val > kvm_val)) { + error_setg(errp, +"Requested count cache flush assist capability level not supported by kvm, try cap-ccf-assist=off"); + } +} + sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { [SPAPR_CAP_HTM] = { .name = "htm", @@ -530,6 +545,15 @@ sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { .apply = cap_large_decr_apply, .cpu_apply = cap_large_decr_cpu_apply, }, + [SPAPR_CAP_CCF_ASSIST] = { + .name = "ccf-assist", + .description = "Count Cache Flush Assist via HW Instruction", + .index = SPAPR_CAP_CCF_ASSIST, + .get = spapr_cap_get_bool, + .set = spapr_cap_set_bool, + .type = "bool", + .apply = cap_ccf_assist_apply, + }, }; static sPAPRCapabilities default_caps_with_cpu(sPAPRMachineState *spapr, @@ -664,6 +688,7 @@ SPAPR_CAP_MIG_STATE(sbbc, SPAPR_CAP_SBBC); SPAPR_CAP_MIG_STATE(ibs, SPAPR_CAP_IBS); SPAPR_CAP_MIG_STATE(nested_kvm_hv, SPAPR_CAP_NESTED_KVM_HV); SPAPR_CAP_MIG_STATE(large_decr, SPAPR_CAP_LARGE_DECREMENTER); +SPAPR_CAP_MIG_STATE(ccf_assist, SPAPR_CAP_CCF_ASSIST); void spapr_caps_init(sPAPRMachineState *spapr) { |