diff options
Diffstat (limited to 'target/ppc/kvm.c')
| -rw-r--r-- | target/ppc/kvm.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index f1d5410..b6bd0fa 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -74,6 +74,7 @@ static int cap_interrupt_level = false; static int cap_segstate; static int cap_booke_sregs; static int cap_ppc_smt; +static int cap_ppc_smt_possible; static int cap_ppc_rma; static int cap_spapr_tce; static int cap_spapr_tce_64; @@ -130,7 +131,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) cap_interrupt_level = kvm_check_extension(s, KVM_CAP_PPC_IRQ_LEVEL); cap_segstate = kvm_check_extension(s, KVM_CAP_PPC_SEGSTATE); cap_booke_sregs = kvm_check_extension(s, KVM_CAP_PPC_BOOKE_SREGS); - cap_ppc_smt = kvm_check_extension(s, KVM_CAP_PPC_SMT); + cap_ppc_smt_possible = kvm_check_extension(s, KVM_CAP_PPC_SMT_POSSIBLE); cap_ppc_rma = kvm_check_extension(s, KVM_CAP_PPC_RMA); cap_spapr_tce = kvm_check_extension(s, KVM_CAP_SPAPR_TCE); cap_spapr_tce_64 = kvm_check_extension(s, KVM_CAP_SPAPR_TCE_64); @@ -144,6 +145,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) * only activated after this by kvmppc_set_papr() */ cap_htab_fd = kvm_check_extension(s, KVM_CAP_PPC_HTAB_FD); cap_fixup_hcalls = kvm_check_extension(s, KVM_CAP_PPC_FIXUP_HCALL); + cap_ppc_smt = kvm_vm_check_extension(s, KVM_CAP_PPC_SMT); cap_htm = kvm_vm_check_extension(s, KVM_CAP_PPC_HTM); cap_mmu_radix = kvm_vm_check_extension(s, KVM_CAP_PPC_MMU_RADIX); cap_mmu_hash_v3 = kvm_vm_check_extension(s, KVM_CAP_PPC_MMU_HASH_V3); @@ -2134,6 +2136,41 @@ int kvmppc_smt_threads(void) return cap_ppc_smt ? cap_ppc_smt : 1; } +int kvmppc_set_smt_threads(int smt) +{ + int ret; + + ret = kvm_vm_enable_cap(kvm_state, KVM_CAP_PPC_SMT, 0, smt, 0); + if (!ret) { + cap_ppc_smt = smt; + } + return ret; +} + +void kvmppc_hint_smt_possible(Error **errp) +{ + int i; + GString *g; + char *s; + + assert(kvm_enabled()); + if (cap_ppc_smt_possible) { + g = g_string_new("Available VSMT modes:"); + for (i = 63; i >= 0; i--) { + if ((1UL << i) & cap_ppc_smt_possible) { + g_string_append_printf(g, " %lu", (1UL << i)); + } + } + s = g_string_free(g, false); + error_append_hint(errp, "%s.\n", s); + g_free(s); + } else { + error_append_hint(errp, + "This KVM seems to be too old to support VSMT.\n"); + } +} + + #ifdef TARGET_PPC64 off_t kvmppc_alloc_rma(void **rma) { |